UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED
MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number		811-02224

MML Series Investment Fund
(Exact name of registrant as specified in charter)

1295 State Street, Springfield, MA				01111
(Address of principal executive offices)				(Zip code)

Richard J. Byrne 1295 State Street, Springfield, MA 01111
(Name and address of agent for service)

Registrant’s telephone number, including area code:			413-788-8411

Date of fiscal year end:	12/31/2007

Date of reporting period:	12/31/2007

Item 1. Reports to Stockholders.

MML Series
Investment Fund

Annual Report

MML Large Cap Value Fund

MML Equity Index Fund

MML Growth Equity Fund

MML NASDAQ-100^® Fund

MML Small Cap Growth Equity Fund

MML Emerging Growth Fund

This annual report describes certain funds offered through the Series. Your variable product prospectus will list which of these funds are available through your variable product.

December 31, 2007

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Table of Contents

Letter to Shareholders					1

Portfolio Manager Reports					3

Portfolio of Investments					25

MML Large Cap Value Fund					25

MML Equity Index Fund					28

MML Growth Equity Fund					34

MML NASDAQ-100^® Fund					37

MML Small Cap Growth Equity Fund					39

MML Emerging Growth Fund					43

Statement of Assets and Liabilities					46

Statement of Operations					48

Statement of Changes in Net Assets					50

Financial Highlights					54

Notes to Financial Statements					59

Report of Independent Registered Public Accounting Firm					70

Trustees and Officers (Unaudited)					71

Federal Tax Information (Unaudited)					75

Other Information (Unaudited)					76

This material must be preceded or accompanied by a current prospectus for the MML Series Investment Fund. Investors should consider a Fund's investment objective, risks and charges and expenses carefully before investing. This and other information about the investment company is available in the prospectus. Read it carefully before investing.

MML Series Investment Fund Report – President's Letter to Shareholders

To Our Shareholders

Richard J. Byrne

Given the numerous challenges the market presented to investors in 2007, we believe current market conditions emphasize the critical nature of maintaining a disciplined focus on a long-term investment strategy. Financial professionals recommend that investment strategies align with an individual's risk tolerance, financial goals and time horizon—employing diversification based on these factors. It is extremely difficult to predict future market conditions, so developing and maintaining an appropriate investment strategy is key during periods of market volatility.

December 31, 2007

2007's challenging environment

Equities and fixed-income investments both advanced in 2007, although stocks in the U.S. stumbled in the last few months of the year. For the 12-month period ended December 31, 2007, the Dow Jones Industrial Average^SM ("the Dow"), a benchmark of blue-chip stocks, returned 6.43% and the S&P 500^® Index, a measure of U.S. large-cap stock performance, gained 5.49%. The leader in the U.S. equity markets was the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, which advanced 9.81%. In foreign developed equity markets, the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index outperformed most of its U.S. counterparts with its 11.17% return. In the fixed-income arena, the Lehman Brothers^® Aggregate Bond Index, a broad measure of the U.S. investment-grade bond market, advanced 6.97%.*

Stocks in the U.S. showed little change during the first quarter of 2007, despite a significant increase in volatility. The Dow declined slightly; conversely, the S&P 500 Index and the NASDAQ each finished with a small advance. The depreciating U.S. dollar continued to support the returns of foreign stocks – helping drive the strong performance of the MSCI EAFE Index. Investor concerns about the weak housing market and subprime lender problems caused higher-quality bond prices to rally and yields to ease. Bond prices move in the opposite direction of interest rates (or yields); when yields rise, the prices of existing bonds fall – and vice versa. In this environment, the Lehman Brothers Aggregate Bond Index posted a positive return for the first quarter of 2007.

Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages. Performance was mixed among fixed-income categories, but investors favored shorter-term bonds.

The fourth quarter began on a positive note, with investors still savoring the third-quarter Fed-engineered interest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter. In this environment,

* Indexes are unmanaged, do not incur fees or expenses and cannot be purchased directly for investment.

(Continued)

MML Series Investment Fund Report – President's Letter to Shareholders (Continued)

higher-quality bonds performed well amid growing concerns about a slowing economy and even a possible recession in the United States. In the end, the Lehman Brothers Aggregate Bond Index advanced 3.00% for the quarter.

A look back at 2007 as we head into 2008

Above all, 2007 was a year in which the subprime mortgage situation developed from a concern into a full-blown crisis. There had been speculation for some time that many subprime mortgages, with their low teaser interest rates scheduled to reset at much higher levels, were a potential threat to borrowers and, by extension, those who invested in securities backed by those loans. The dangers of subprime borrowing didn't seem to grab investors' attention, however, until the situation got bad enough to damage the earnings of some of Wall Street's largest and strongest blue-chip financial companies – such as Bear Stearns, Citigroup, Merrill Lynch, Morgan Stanley and Wachovia. Fourth-quarter profit projections for S&P 500 companies as a group swung from an 11.5% gain at the beginning of October 2007 to a 6.1% drop as of December 31, 2007, mainly due to the deteriorating environment in the financial sector. This movement represented the la rgest quarterly shift since 1999, according to Reuters Estimates.

Outlook

While the fourth-quarter earnings outlook was scaled back considerably, consensus estimates for 2008 remained upbeat, particularly for the second half of the year. Those forecasts assume that the economy will avoid a recession, in part because of an accommodative Fed. While the Fed has demonstrated its willingness to lower interest rates in order to head off a recession, inflationary pressures could limit the central bank's choices going forward. We are cautious, but the truth is that we cannot predict when recessions will occur. It is also true that stocks can perform well during a slowdown as long as economic activity doesn't decelerate too much. Given the difficulty of predicting future market conditions, you may want to consider consulting your financial representative. He or she can work with you to develop a course of action that will help you stay invested for the long term, according to a plan that fits your risk tolerance, time hori zon and financial objectives.

Richard J. Byrne
President

The information provided is the opinion of MassMutual Retirement Services Investments Marketing as of 1/1/08 and is subject to change without notice. It is not to be construed as tax, legal or investment advice. Of course, past performance does not guarantee future results.

MML Large Cap Value Fund – Portfolio Manager Report

What is the investment objective of the MML Large Cap Value Fund – and who is the Fund's sub-adviser? The Fund seeks both capital growth and income by selecting businesses that possess characteristics that the Fund's sub-adviser, Davis Selected Advisers, L.P. (Davis) believes foster the creation of long-term value, such as proven management, a durable franchise and business model, and sustainable competitive advantages.

How did the Fund perform during the 12 months ended December 31, 2007? The Fund returned 4.22%, trailing the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies. The Fund did, however, outpace the -0.17% return of the Russell 1000^® Value Index, an unmanaged index representative of stocks with a greater-than-average value orientation among the stocks of the largest 1000 U.S. companies based on capitalization.

What was the investment background during the period? Domestic stocks showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. Although the Dow Jones Industrial Average^SM ("the Dow") notched a new closing high in February, the blue-chip benchmark declined slightly for the three months ended March 31, 2007. The S&P 500 Index finished with a small advance, as did the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, which barely managed to post a gain for the period. A depreciating U.S. dollar supported the returns of foreign stocks, helping the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index outperform its U.S. counterparts for the quarter. Most U.S. stock i ndexes advanced in the second quarter, with some setting records along the way. Stocks rode a wave of optimism over corporate earnings early in the quarter and later overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages. During the period, the housing market remained depressed, and long-term interest rates moved decisively higher. Crude oil surged to close the quarter near $70 per barrel.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the third quarter, and the MSCI EAFE Index advanced slightly. The fourth quarter began on a positive no te, with investors still savoring the third-quarter Fed-engineered interest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance? In the first three months of 2007, the Fund's allocations to the health care and materials sectors fueled its performance – and helped balance the results from other sectors, which were flat to modestly negative. Individual contributors during the period included Martin Marietta, EOG Resources, Vulcan Materials, Loews Corp. and CVS/Caremark (formed out of the merger between CVS and Caremark Rx in March). Conversely, the stocks that detracted most from the Fund's return in the first quarter included Harley-Davidson, American Express, Comcast, American International Group and Progressive Corp. In the second quarter of 2007, the Fund's allocations to the financials, energy, consumer discretionary and consumer staples sectors contributed to its performance, while detractors were largely stock s pecific.

MML Large Cap Value Fund – Portfolio Manager Report (Continued)

In the third quarter of 2007, the Fund's holdings in the energy and consumer staples sectors were the largest contributors to the Fund's performance, while select holdings in the consumer discretionary sector detracted. Finally, in the fourth quarter of 2007, the Fund's investments in the energy, consumer staples and information technology sectors were the greatest drivers of the portfolio's returns. Conversely, individual stocks in the consumer discretionary and financial sectors hampered the Fund's progress.

What is your outlook? Whatever happens in 2008 and whatever styles, industries or market capitalizations move into or out of favor, we remain committed to our investment discipline of buying durable businesses at value prices and holding them for the long term. We believe that keen attention to stock selection, in tandem with a sensible framework for building portfolios, can help the Fund withstand a variety of market conditions.

MML Large Cap Value Fund – Portfolio Manager Report (Continued)

MML Large Cap Value Fund

Industry Table

(% of Net Assets) on 12/31/07

Oil & Gas	15.2	%
Insurance	15.2	%
Diversified Financial	11.6	%
Retail	9.4	%
Banks	6.3	%
Media	4.8	%
Agriculture	3.9	%
Commercial Services	3.4	%
Software	3.0	%
Beverages	1.9	%
Computers	1.8	%
Electronics	1.8	%
Cosmetics & Personal Care	1.6	%
Packaging & Containers	1.5	%
Telecommunications	1.5	%
Pharmaceuticals	1.5	%
Health Care — Products	1.5	%
Manufacturing	1.3	%
Internet	1.2	%
Mining	1.2	%
Health Care — Services	1.1	%
Leisure Time	1.1	%
Transportation	1.0	%
Coal	0.8	%
Holding Company — Diversified	0.8	%
Building Materials	0.8	%
Semiconductors	0.7	%
Foods	0.2	%
Housewares	0.1	%
Real Estate	0.1	%
Total Long-Term Investments	96.3	%
Short-Term Investments and Other Assets and Liabilities	3.7	%
	100.0	%

MML Large Cap Value Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Costco Wholesale Corp.	4.8	%
ConocoPhillips	4.7	%
American Express Co.	4.2	%
Berkshire Hathaway, Inc. Cl. A	3.9	%
Altria Group, Inc.	3.9	%
American International Group, Inc.	3.8	%
JP Morgan Chase & Co.	3.6	%
Occidental Petroleum Corp.	3.2	%
Devon Energy Corp.	2.7	%
Microsoft Corp.	2.6	%

MML Large Cap Value Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Large Cap Value Fund, the S&P 500 Index and the Russell 1000 Value Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_Since_Inception_Average_Annual_{5/1/00 -}_12/31/07
MML Large Cap Value Fund		4.22	%		13.53	%		4.37	%
S&P 500 Index		5.49	%		12.82	%		1.84	%
Russell 1000 Value Index		(0.17	)%		14.63	%		7.17	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Performance data quoted represents past performance; past performance is not predictive of future results. The investment return and principal value of shares of the Fund will fluctuate with market conditions so that shares of the Fund, when redeemed, may be worth more or less than their original cost. Current performance of the Fund may be lower or higher than the performance quoted. Performance data current to the most recent month end may be obtained by accessing the website www.massmutual.com

Investors should note that the Fund is a professionally managed mutual fund, while the S&P 500 Index and the Russell 1000 Value Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Equity Index Fund – Portfolio Manager Report

What is the investment objective of the MML Equity Index Fund – and who is the Fund's sub-adviser? The Fund seeks to provide investment results that correspond to the price and yield performance of publicly traded common stocks in the aggregate as represented by the S&P 500^® Index. The Fund pursues this objective by investing at least 80% of its net assets in the securities of companies that make up the S&P 500 Index. The Fund's sub-adviser is Northern Trust Investments, N.A. (Northern).

How did the Fund perform during the 12 months ended December 31, 2007? The Fund's Class I shares returned 5.13%, lagging the 5.49% return of the S&P 500 Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

What was the investment background during the period? Overcoming a dip in the market in February, U.S. equity markets posted positive numbers for the first half of 2007, despite negative pressures surrounding subprime loan defaults, rising interest rates and geopolitical conflicts in the Middle East and Asia. The S&P 500 Index closed at an all-time high in May. Ongoing merger and acquisition activity, takeover announcements and strong earnings reports also contributed to the markets' performance in the first quarter of 2007. On January 18, 2007, crude oil prices dropped to $51 a barrel on higher-than-expected supply news. This retreat was short-lived, as oil closed higher at the end of the second quarter, at around $70 per barrel. The Federal Reserve ("Fed") kept interest rates unchanged during the second quarter of 2007.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Fed cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter. The fourth quarter began on a positive note, with investors still savoring the third-quarter Fed-engineered in terest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to bolster investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence.

What factors contributed to the Fund's performance? Large capitalization stocks, as represented by the S&P 500 Index, returned 5.49% for the one-year period ended December 31, 2007. Large-cap stocks outpaced their small-cap counterparts for the 12-month period, as measured by the Russell 2000^® Index, which returned -1.56%. From a style perspective, value stocks outpaced their growth competitors in the first half of 2007, while the trend reversed itself in the second half.

For full-year 2007, positive performance within sectors was broad based, with eight of 10 sectors posting positive returns. The energy, information technology and consumer staples sectors added the most value. The energy sector had the largest return for the 12-month period, with its advance of 34.40%. The information technology sector saw strong performance from computer and Internet software securities. Within the consumer staples sector, beverage and household product industry groups added the most value. Conversely, the financial and consumer discretionary sectors were the only detractors for the 12-month period. Financials were down 18.63% for the year, as the subprime fallout and housing slowdown had disastrous consequences for that market sector.

What is your outlook? As we enter 2008, investors face a wide array of challenges. These include the price of oil, the subprime crisis, Fed policy and inflation, to name just a few. Despite these uncertainties, we believe that the Fund continues to be positioned to pursue returns that are consistent with those of the S&P 500 Index.

"Standard & Poor's^®", "S&P^®", "S&P 500^®", "Standard & Poor's 500" and "500" are trademarks of The McGraw-Hill Companies, Inc. and have been licensed for use by the Fund. The Fund is not sponsored, endorsed, sold or promoted by Standard & Poor's and Standard & Poor's makes no representation regarding the advisability of investing in the Fund.

MML Equity Index Fund – Portfolio Manager Report (Continued)

MML Equity Index Fund

Industry Table

(% of Net Assets) on 12/31/07

Oil & Gas	10.2	%
Diversified Financial	6.5	%
Telecommunications	6.1	%
Pharmaceuticals	5.7	%
Banks	5.3	%
Retail	5.0	%
Manufacturing	5.0	%
Computers	4.8	%
Insurance	4.4	%
Software	4.1	%
Electric	3.3	%
Health Care — Products	3.2	%
Semiconductors	2.7	%
Media	2.7	%
Beverages	2.4	%
Aerospace & Defense	2.3	%
Internet	2.3	%
Cosmetics & Personal Care	2.2	%
Oil & Gas Services	1.9	%
Chemicals	1.9	%
Foods	1.8	%
Transportation	1.7	%
Agriculture	1.6	%
Health Care — Services	1.5	%
Real Estate Investment Trusts (REITS)	0.9	%
Biotechnology	0.8	%
Mining	0.8	%
Commercial Services	0.7	%
Electronics	0.6	%
Machinery — Diversified	0.5	%
Pipelines	0.5	%
Household Products	0.4	%
Machinery — Construction & Mining	0.4	%
Auto Manufacturers	0.4	%
Electrical Components & Equipment	0.4	%
Forest Products & Paper	0.3	%
Lodging	0.3	%
Iron & Steel	0.3	%
Leisure Time	0.2	%
Apparel	0.2	%
Coal	0.2	%
Automotive & Parts	0.2	%
Engineering & Construction	0.2	%
Savings & Loans	0.2	%
Office Equipment/Supplies	0.2	%
Gas	0.2	%
Environmental Controls	0.2	%
Metal Fabricate & Hardware	0.1	%
Advertising	0.1	%
Building Materials	0.1	%
Packaging & Containers	0.1	%
Entertainment	0.1	%
Distribution & Wholesale	0.1	%
Home Builders	0.1	%
Home Furnishing	0.1	%
Toys, Games & Hobbies	0.1	%
Hand & Machine Tools	0.1	%
Airlines	0.1	%
Holding Company — Diversified	0.1	%
Housewares	0.1	%
Total Long-Term Investments	99.0	%
Short-Term Investments and Other Assets and Liabilities	1.0	%
	100.0	%

MML Equity Index Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Exxon Mobil Corp.	3.9	%
General Electric Co.	2.9	%
Microsoft Corp.	2.2	%
AT&T, Inc.	1.9	%
The Procter & Gamble Co.	1.8	%
Chevron Corp.	1.5	%
Johnson & Johnson	1.5	%
Bank of America Corp.	1.4	%
Apple, Inc.	1.3	%
Cisco Systems, Inc.	1.3	%

MML Equity Index Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Equity Index Fund Class I and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_{Ten Year}_Average_Annual_{1/1/98 -}_12/31/07
MML Equity Index Fund Class I		5.13	%		12.37	%		5.45	%
S&P 500 Index		5.49	%		12.82	%		5.91	%

Hypothetical Investments in MML Equity Index Fund Class II, Class III and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_Since_Inception_Average_Annual_{5/1/00 -}_12/31/07
MML Equity Index Fund Class II		5.24	%		12.55	%		1.56	%
MML Equity Index Fund Class III		5.40	%		12.70	%		1.66	%
S&P 500 Index		5.49	%		12.82	%		1.84	%

GROWTH OF $10,000 INVESTMENT FOR THE PAST TEN YEARS

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the S&P 500 Index is unmanaged, does not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Growth Equity Fund – Portfolio Manager Report

What is the investment objective of the MML Growth Equity Fund – and who is the Fund's sub-adviser? The Fund seeks long-term growth of capital and future income by normally investing at least 80% of its net assets in the common stocks and securities convertible into common stocks of companies that the Fund's sub-adviser believes offer prospects for long-term growth. Effective November 28, 2007, T. Rowe Price Associates, Inc. (T. Rowe Price) replaced Grantham, Mayo, Van Otterloo & Co. LLC (GMO) as the Fund's sub-adviser.

How did the Fund perform during the 12 months ended December 31, 2007? The Fund returned 4.34%, underperforming the 11.81% return of the Russell 1000^® Growth Index, an unmanaged index consisting of those Russell 1000 securities (representing the 1000 largest U.S. companies based on market capitalization) with greater-than-average growth orientation that tend to exhibit higher price-to-book ratios and forecasted growth values than securities in the value universe. The Fund also trailed the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

As we originally noted in the Fund's June 30, 2007 semi-annual report, going forward, the Fund's performance will be compared to the Russell 1000 Growth Index rather than the S&P 500 Index because the Russell 1000 Growth Index more closely represents the Fund's investment strategy.

What was the investment background during the period? Domestic stocks showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. Although the Dow Jones Industrial Average^SM ("the Dow") notched a new closing high in February, the blue-chip benchmark declined slightly for the three months ended March 31, 2007. The S&P 500 Index finished with a small advance, as did the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, which barely managed to post a gain for the period. Most U.S. stock indexes advanced in the second quarter, with some setting records along the way. Stocks rode a wave of optimism over corporate earnings early in the quarter and later overcame short periods of increased volatility associated with investor concerns ab out soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages. During the period, the housing market remained depressed, and long-term interest rates moved decisively higher. Crude oil surged to close the quarter near $70 per barrel.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence.

What factors contributed to the Fund's performance? The portfolio's concentration in high-quality stocks – at the expense of their low-quality counterparts – detracted from returns in the first quarter of 2007. Of the portfolio's investment disciplines (valuation and momentum), momentum benefited performance during the period, whereas valuation detracted. After hindering the Fund's progress in the late-February stock market decline, momentum resumed its favorable performance in March, with a positive finish for the first quarter. Sector selection was a positive influence on results, aided by the Fund's positions in the oil/gas and retail stores sectors and de-emphasis of technology. The Fund's relative positions in the machinery, services and utility sectors all detracted from performance. Turning to the second quarter of 2007, the Fund 's valuation discipline fared poorly in April before stabilizing somewhat in May and June. On the other hand, the momentum portfolio declined steadily throughout the period. Sector selection detracted from the portfolio's returns, although holdings in the oil/gas, construction and automotive sectors

MML Growth Equity Fund – Portfolio Manager Report (Continued)

contributed to returns. On the downside, the strategy's overall positioning in retail stores, technology and machinery detracted.

Sector selection hampered the Fund's returns in the third quarter of 2007. Underweight positions in the transportation, financial, and utilities sectors contributed positively to results, whereas the portfolio's overweight position in retail stores and underweight in technology and machinery detracted. In the fourth quarter of 2007, the Fund's valuation investment discipline was detrimental, while momentum proved beneficial. From a sector perspective, the materials and information technology sectors were the leading contributors for the quarter. Consumer discretionary and financials were the laggards, posting negative returns.

MML Growth Equity Fund – Portfolio Manager Report (Continued)

MML Growth Equity Fund

Industry Table

(% of Net Assets) on 12/31/07

Telecommunications	9.3	%
Diversified Financial	8.2	%
Software	7.7	%
Pharmaceuticals	7.0	%
Internet	6.8	%
Manufacturing	6.1	%
Retail	5.9	%
Oil & Gas Services	5.6	%
Computers	4.6	%
Health Care — Services	4.3	%
Banks	3.9	%
Semiconductors	3.9	%
Health Care — Products	3.6	%
Oil & Gas	2.9	%
Aerospace & Defense	2.6	%
Media	2.0	%
Lodging	1.7	%
Engineering & Construction	1.7	%
Biotechnology	1.7	%
Commercial Services	1.7	%
Insurance	1.6	%
Chemicals	1.6	%
Cosmetics & Personal Care	1.3	%
Mining	1.2	%
Advertising	0.6	%
Beverages	0.5	%
Entertainment	0.4	%
Toys, Games & Hobbies	0.3	%
Foods	0.3	%
Transportation	0.2	%
Electronics	0.2	%
Auto Manufacturers	0.1	%
Total Long-Term Investments	99.5	%
Short-Term Investments and Other Assets and Liabilities	0.5	%
	100.0	%

MML Growth Equity Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Google, Inc. Cl. A	3.3	%
General Electric Co.	3.2	%
Microsoft Corp.	2.9	%
Schlumberger Ltd.	2.6	%
Danaher Corp.	2.5	%
Apple, Inc.	2.4	%
State Street Corp.	2.2	%
Amazon.com, Inc.	2.1	%
CVS Caremark Corp.	2.0	%
Smith International, Inc.	1.8	%

MML Growth Equity Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Growth Equity Fund, the Russell 1000 Growth Index and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_Since_Inception_Average_Annual_{5/3/99 -}_12/31/07
MML Growth Equity Fund		4.34	%		7.33	%		(0.77	)%
Russell 1000 Growth Index		11.81	%		12.11	%		(0.17	)%
S&P 500 Index		5.49	%		12.82	%		2.76	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 1000 Growth Index and the S&P 500 Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML NASDAQ-100^® Fund – Portfolio Manager Report

What is the investment objective of the MML NASDAQ-100^® Fund (formerly known as the MML OTC 100 Fund) – and who is the Fund's sub-adviser? On November 30, 2007, the MML OTC 100 Fund's name changed to the MML NASDAQ-100^® Fund. The MML NASDAQ-100 Fund seeks to approximate, as closely as practicable (before fees and expenses), the total return of the NASDAQ-100 Index^®. The Fund's sub-adviser is Northern Trust Investments, N.A. (Northern).

How did the Fund perform during the 12 months ended December 31, 2007? The Fund returned 18.86%, moderately exceeding the 18.67% return of the NASDAQ-100 Index. The NASDAQ-100 Index is a modified capitalization-weighted index composed of the 100 largest non-financial companies listed on the National Association of Securities Dealers Automated Quotations System ("NASDAQ").

What was the investment background during the period? Overcoming a dip in the market in February, U.S. equity markets posted positive numbers for the first half of 2007, despite negative pressures surrounding subprime loan defaults, rising interest rates and geopolitical conflicts in the Middle East and Asia. The S&P 500^® Index closed at an all-time high in May. Ongoing merger and acquisition activity, takeover announcements and strong earnings reports also contributed to market performance in the first quarter of 2007. On January 18, 2007, crude oil prices dropped to $51 a barrel on higher-than-expected supply news. This retreat was short-lived, as oil closed higher at the end of the second quarter, at around $70 per barrel. The Federal Reserve ("Fed") kept interest rates unchanged during the second quarter of 2007.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Fed cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter. The fourth quarter began on a positive note, with investors still savoring the third-quarter Fed-engineered in terest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to bolster investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period.

What factors contributed to the Fund's performance? Equity markets ended the 12-month period in positive territory, despite the equity markets' difficulties over concerns about credit risk, the health of the financials sector, and its potential effect on the broader economy. The Fed lowered the federal funds rate a total of 1.00% in the second half of the year to counter the tightening of financial conditions and protect against downside risks to the economy.

The federal funds rate ended 2007 at 4.25%, and the discount rate was 4.75% on December 31. The Federal Open Market Committee notes highlighted the "upward pressure on inflation" due to energy and commodity prices. Crude oil continued its climb towards $100 per barrel, surpassing $100 in intra-day trading in December and closing at $95.95 for 2007.

NASDAQ^®, NASDAQ-100^® and NASDAQ-100 Index^® are trademarks of The NASDAQ Stock Market, Inc. (together with its affiliates, "NASDAQ") and are licensed for use by the Fund. The Fund has not been passed on by NASDAQ as to its legality or suitability. The Fund is not issued, endorsed, sold or promoted by NASDAQ. NASDAQ MAKES NO WARRANTIES AND BEARS NO LIABILITY WITH RESPECT TO THE FUND.

MML NASDAQ-100^® Fund – Portfolio Manager Report (Continued)

MML NASDAQ-100 Fund

Industry Table

(% of Net Assets) on 12/31/07

Computers	20.4	%
Software	15.7	%
Internet	13.5	%
Telecommunications	10.2	%
Semiconductors	8.5	%
Pharmaceuticals	5.4	%
Biotechnology	4.9	%
Retail	4.2	%
Media	2.9	%
Health Care — Products	2.1	%
Electronics	1.7	%
Auto Manufacturers	1.3	%
Commercial Services	1.2	%
Transportation	1.0	%
Lodging	0.8	%
Engineering & Construction	0.7	%
Advertising	0.5	%
Airlines	0.5	%
Machinery — Construction & Mining	0.4	%
Chemicals	0.4	%
Textiles	0.3	%
Iron & Steel	0.3	%
Foods	0.3	%
Environmental Controls	0.3	%
Beverages	0.2	%
Total Long-Term Investments	97.7	%
Short-Term Investments and Other Assets and Liabilities	2.3	%
	100.0	%

MML NASDAQ-100 Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Apple, Inc.	13.4	%
Microsoft Corp.	6.4	%
Google, Inc. Cl. A	5.5	%
Qualcomm, Inc.	4.3	%
Research In Motion Ltd.	3.5	%
Cisco Systems, Inc.	3.3	%
Intel Corp.	3.0	%
Oracle Corp.	2.7	%
Gilead Sciences, Inc.	2.3	%
eBay, Inc.	1.9	%

MML NASDAQ-100^® Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML NASDAQ-100 Fund (formerly MML OTC 100 Fund) and the NASDAQ-100 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_Since_Inception_Average_Annual_{5/1/00 -}_12/31/07
MML NASDAQ-100 Fund		18.86	%		16.10	%		(7.78	)%
NASDAQ-100 Index		18.67	%		16.20	%		(7.45	)%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the NASDAQ-100 Index is unmanaged, does not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Small Cap Growth Equity Fund – Portfolio Manager Report

What is the investment objective of the MML Small Cap Growth Equity Fund – and who are the Fund's sub-advisers? The Fund seeks long-term capital appreciation by investing primarily in common stocks and equity securities of smaller companies that the Fund's sub-advisers believe offer potential for long-term growth. The Fund's sub-advisers are Wellington Management Company, LLP (Wellington Management) and Waddell & Reed Investment Management Company (Waddell & Reed). Each sub-adviser is responsible for a portion of the portfolio, but not necessarily equal weighted.

How did the Fund perform during the 12 months ended December 31, 2007? The Fund returned 9.66%, outperforming the 7.06% return of the Russell 2000^® Growth Index, a widely recognized, unmanaged index that measures the performance of those Russell 2000 Index companies (representing small-capitalization U.S. common stocks) with higher price-to-book ratios and forecasted growth rates. The Fund's 9.66% return also exceeded the -1.56% return of the Russell 2000 Index, a widely recognized, unmanaged index representative of common stocks of smaller capitalized U.S. companies.

As we originally noted in the Fund's June 30, 2007 semi-annual report, going forward, the Fund's performance will be compared to the Russell 2000 Growth Index rather than the Russell 2000 Index because the Russell 2000 Growth Index more closely represents the Fund's investment strategy. The Fund will retain the Russell 2000 Index as its supplemental benchmark for performance comparisons.

What was the investment background during the period? U.S. equity markets rose in the first quarter of 2007, as solid corporate earnings and continued merger and acquisition activity offset concerns of a weakening housing and credit environment. Despite the fact that most major indexes posted positive results, first-quarter returns were marked by extreme volatility. The markets were roiled by the subprime shakeout, a slowing U.S. economy and sentiment swings in emerging markets. In the second quarter of 2007, equity markets generally advanced, as better-than-expected corporate earnings and views of solidifying economic growth outweighed concerns of both rising interest rates and a continuing U.S. housing slump.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the third quarter. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence.

What factors contributed to the Fund's performance? Broad-based, positive results in the consumer discretionary sector aided the Fund's performance in the first quarter of 2007, as did certain portfolio holdings in the financials sector, a sector that under-performed overall. Within energy, lower energy prices and rising costs proved to be a hindrance. Certain telecommunications positions also underperformed. Overall, sector allocation was favorable. On the downside, poor results from the portfolio's information technology stocks detracted. In the second quarter of 2007, the portfolio benefited from strong stock selection in the information technology, health care, financials and consumer discretionary sectors. Conversely, stock selection in consumer staples and telecommunication services hampered performance. Finally, the Fund's performance bene fited from its underweight position in the poor-performing financials sector.

MML Small Cap Growth Equity Fund – Portfolio Manager Report (Continued)

During the third quarter of 2007, stock selection was the main performance driver. The Fund's security selection in financials aided results, as did Fund management's choices in the information technology, consumer discretionary, and industrials sectors. Conversely, certain stocks in the industrials sector, in tandem with some holdings in the energy sector, detracted from performance. Turning to the fourth quarter of 2007, from a sector standpoint, it was no surprise that the two poorest-performing sectors were financials and consumer discretionary – as the consumer continued to come under pressure due to the housing downturn, tighter credit availability and rising food and fuel prices. We believe these same components squeezed the financials sector as well. On the other hand, strong security selection, particularly in the energy, materials, information technology and financials sectors, contributed to the Fund's performance.

What is your outlook? In our view, the concerns that developed in 2007, such as the subprime mortgage fallout, inflation fears, possible recession, the housing market slowdown and high energy prices, will continue into 2008 and have the potential to worsen in the short term. As a result, we remain committed to focusing on what we feel are higher-quality growth stocks that have a more sustainable and visible earnings stream with the potential to grow through internal cash flows.

MML Small Cap Growth Equity Fund – Portfolio Manager Report (Continued)

MML Small Cap Growth Equity Fund

Industry Table

(% of Net Assets) on 12/31/07

Software	11.2	%
Commercial Services	7.5	%
Internet	6.8	%
Computers	4.8	%
Oil & Gas	4.6	%
Retail	4.5	%
Health Care — Services	3.7	%
Pharmaceuticals	3.6	%
Transportation	3.3	%
Entertainment	3.1	%
Machinery — Construction & Mining	2.8	%
Chemicals	2.7	%
Insurance	2.5	%
Biotechnology	2.3	%
Semiconductors	2.3	%
Distribution & Wholesale	2.3	%
Health Care — Products	2.2	%
Engineering & Construction	2.2	%
Investment Companies	2.1	%
Diversified Financial	1.9	%
Lodging	1.4	%
Energy — Alternate Sources	1.3	%
Aerospace & Defense	1.3	%
Telecommunications	1.2	%
Environmental Controls	0.9	%
Home Furnishing	0.9	%
Coal	0.9	%
Cosmetics & Personal Care	0.8	%
Packaging & Containers	0.7	%
Machinery — Diversified	0.7	%
Electronics	0.6	%
Mining	0.6	%
Banks	0.5	%
Automotive & Parts	0.5	%
Media	0.5	%
Manufacturing	0.5	%
Iron & Steel	0.4	%
Advertising	0.4	%
Household Products	0.4	%
Oil & Gas Services	0.3	%
Water	0.3	%
Electric	0.3	%
Real Estate Investment Trusts (REITS)	0.3	%
Gas	0.3	%
Trucking & Leasing	0.2	%
Holding Company — Diversified	0.2	%
Apparel	0.2	%
Toys, Games & Hobbies	0.2	%
Airlines	0.2	%
Hand & Machine Tools	0.2	%
Foods	0.1	%
Beverages	0.1	%
Total Long-Term Investments	93.8	%
Short-Term Investments and Other Assets and Liabilities	6.2	%
	100.0	%

MML Small Cap Growth Equity Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Bucyrus International, Inc. Cl. A	2.5	%
Chicago Bridge & Iron Co.	2.2	%
Adams Respiratory Therapeutics, Inc.	2.1	%
iShares Russell 2000 Growth Index Fund	1.9	%
LKQ Corp.	1.8	%
Blackbaud, Inc.	1.7	%
Healthways, Inc.	1.7	%
Blackboard, Inc.	1.6	%
Bill Barrett Corp.	1.6	%
FactSet Research Systems, Inc.	1.5	%

MML Small Cap Growth Equity Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Small Cap Growth Equity Fund, the Russell 2000 Growth Index and the Russell 2000 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_Since_Inception_Average_Annual_{5/3/99 -}_12/31/07
MML Small Cap Growth Equity Fund		9.66	%		17.56	%		8.76	%
Russell 2000 Growth Index		7.06	%		16.50	%		4.04	%
Russell 2000 Index		(1.56	)%		16.25	%		8.16	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 2000 Growth Index and the Russell 2000 Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Emerging Growth Fund – Portfolio Manager Report

What is the investment objective of the MML Emerging Growth Fund – and who are the Fund's sub-advisers? The Fund seeks capital appreciation by investing primarily in smaller, rapidly growing emerging growth companies, which may include companies growing earnings per share and/or revenues at above-average rates. The Fund's sub-advisers are Delaware Management Company (DMC) and Insight Capital Research & Management, Inc. (Insight Capital). Each sub-adviser is responsible for a portion of the portfolio, but not necessarily equal weighted.

How did the Fund perform during the 12 months ended December 31, 2007? The Fund returned 17.81%, significantly outperforming the 7.06% return of the Russell 2000^® Growth Index, a widely recognized, unmanaged index that measures the performance of those Russell 2000 Index companies (representing small-capitalization U.S. common stocks) with higher price-to-book ratios and forecasted growth rates. The Fund's 17.81% return also significantly exceeded the -1.56% return of the Russell 2000 Index, a widely recognized, unmanaged index representative of common stocks of smaller capitalized U.S. companies.

What was the investment backdrop during the period? The strength of corporate profit growth and heightened deal activity in the first quarter of 2007 extended the market rally that began in 2006, but not before the market took a major hit in February. Rising fears about contagion spreading from the subprime lending market, relatively weak economic growth data and announcements from Chinese authorities about their intent to curb market speculation all converged to cause a major sell-off late in the month. Over the ensuing weeks, many of these concerns abated, and the markets rebounded. Investors bought stocks with conviction during the second quarter of 2007, as the major indexes advanced throughout the period.

The third quarter of 2007 was marked by a period of volatility in the market. Concerns about a severe deterioration in credit markets, worries about a potential recession, and the ultimate lowering of interest rates by the Federal Reserve ("Fed") all had a significant effect on stock prices. Although stocks in the middle of the period experienced major declines, a positive response to the Fed's interest rate cuts left most indexes up slightly for the quarter. Concerns about the impact of housing-related credit problems on the overall economy drove stocks lower in the fourth quarter of 2007. The threat of inflation, largely as a response to oil prices approaching $100 a barrel, renewed fears about the future health of consumer spending. The convergence of these factors detracted from returns for the fourth quarter.

What factors contributed to the Fund's performance? In the first quarter of 2007, overall stock selection was positive, with the top contributors coming from the consumer nondurables, materials, health care and basic industry/capital goods sectors. Conversely, weakness in the information technology, industrials and consumer services sectors hindered the Fund's performance. In the second quarter of 2007, a slightly negative impact from sector allocation was more than overcome by superior stock selection. Leading the way with strong performance were the Fund's holdings in the business services, consumer services and health care sectors.

In the third quarter of 2007, enhanced stock selection in the business services, consumer services and consumer nondurables sectors was more than able to offset some weakness in the health care and financials sectors. Hampering sector allocation were an underweight position in the health care sector and an overweight position in the consumer nondurables sector. Conversely, the portfolio benefited from an underweight position in the transportation sector. In the fourth quarter of 2007, consumer discretionary and industrial holdings proved beneficial for the Fund, while information technology and health care holdings detracted from performance, as did stock picks in the consumer nondurables, consumer services and energy sectors. An overweight position in consumer nondurables also hindered the Fund's performance, as this was one of the worst-performing sectors during the quarter (due to fears that housing price declines and related credit probl ems would dampen consumer spending). In the energy sector, stock selection detracted, based on the Fund's underweight position in energy exploration and production stocks, which performed significantly better than the oil service-related companies in which the Fund has traditionally invested.

MML Emerging Growth Fund – Portfolio Manager Report (Continued)

What is your outlook? As we enter 2008, worries remain as to whether the overall economy will be able to sustain the growth seen in 2007. Rising energy costs and falling housing prices are both detrimental to consumer spending. We have reduced our position in consumer-oriented names as a result of these concerns, while redeploying the proceeds largely to health care stocks, which are not as susceptible to these factors. There was a large disparity in performance between growth- and value-oriented stocks during 2007, which indicates that investors may still be willing to place their confidence in companies that have the ability to grow earnings and sales in the current environment. Consequently, we will continue to focus on companies with these characteristics.

MML Emerging Growth Fund – Portfolio Manager Report (Continued)

MML Emerging Growth Fund

Industry Table

(% of Net Assets) on 12/31/07

Pharmaceuticals	9.5	%
Internet	8.9	%
Commercial Services	7.9	%
Computers	6.4	%
Software	4.8	%
Biotechnology	4.4	%
Oil & Gas Services	4.3	%
Health Care — Products	4.1	%
Retail	3.6	%
Apparel	3.3	%
Semiconductors	2.9	%
Metal Fabricate & Hardware	2.4	%
Health Care — Services	2.3	%
Chemicals	2.3	%
Oil & Gas	2.0	%
Machinery — Diversified	1.9	%
Distribution & Wholesale	1.9	%
Foods	1.8	%
Insurance	1.7	%
Energy — Alternate Sources	1.6	%
Diversified Financial	1.6	%
Aerospace & Defense	1.3	%
Entertainment	1.3	%
Telephone Utilities	1.2	%
Leisure Time	1.2	%
Coal	1.1	%
Manufacturing	1.0	%
Environmental Controls	1.0	%
Engineering & Construction	1.0	%
Household Products	0.9	%
Electronics	0.9	%
Telecommunications	0.8	%
Hand & Machine Tools	0.7	%
Banks	0.6	%
Total Long-Term Investments	92.6	%
Short-Term Investments and Other Assets and Liabilities	7.4	%
	100.0	%

MML Emerging Growth Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Priceline.com, Inc.	3.1	%
Deckers Outdoor Corp.	2.8	%
Synaptics, Inc.	2.4	%
Terra Industries, Inc.	2.3	%
Blue Coat Systems, Inc.	2.3	%
Perrigo Co.	2.2	%
United Therapeutics Corp.	2.2	%
FTI Consulting, Inc.	2.2	%
Arena Resources, Inc.	2.0	%
LKQ Corp.	1.9	%

MML Emerging Growth Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Emerging Growth Fund, the Russell 2000 Growth Index and the Russell 2000 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 -}_12/31/07			_{Five Year}_Average_Annual_{1/1/03 -}_12/31/07			_Since_Inception_Average_Annual_{5/1/00 -}_12/31/07
MML Emerging Growth Fund		17.81	%		15.92	%		(3.83	)%
Russell 2000 Growth Index		7.06	%		16.50	%		0.92	%
Russell 2000 Index		(1.56	)%		16.25	%		6.89	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Large Cap Value Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 96.3%
COMMON STOCK — 96.3%
Agriculture — 3.9%
Altria Group, Inc.		148,300	$	11,208,514
Banks — 6.3%
The Bank of New York Mellon Corp.		81,500		3,973,940
Commerce Bancorp, Inc.(a)		39,600		1,510,344
HSBC Holdings PLC GBP		88,728		1,500,050
State Street Corp.		8,100		657,720
Wachovia Corp.		121,079		4,604,634
Wells Fargo & Co.		202,600		6,116,494
				18,363,182
Beverages — 1.9%
Diageo PLC Sponsored ADR (United Kingdom)		39,500		3,390,285
Heineken Holding NV Cl. A EUR		38,550		2,186,247
				5,576,532
Building Materials — 0.8%
Martin Marietta Materials, Inc.(a)		17,700		2,347,020
Coal — 0.8%
China Coal Energy Co. HKD		806,700		2,478,528
Commercial Services — 3.4%
Block (H&R), Inc.		125,400		2,328,678
Cosco Pacific Ltd. HKD		270,600		714,880
Iron Mountain, Inc.(b)		129,699		4,801,457
Moody's Corp.		55,700		1,988,490
				9,833,505
Computers — 1.8%
Dell, Inc.(b)		124,600		3,053,946
Hewlett-Packard Co.		43,600		2,200,928
				5,254,874
Cosmetics & Personal Care — 1.6%
Avon Products, Inc.		32,900		1,300,537
The Procter & Gamble Co.		47,500		3,487,450
				4,787,987
Diversified Financial — 11.6%
American Express Co.		233,300		12,136,266
Ameriprise Financial, Inc.		53,680		2,958,305
Citigroup, Inc.		86,500		2,546,560
Discover Financial Services		12,400		186,992
E*TRADE Financial Corp.(a) (b)		16,400		58,220

	Number of Shares		Market Value
JP Morgan Chase & Co.		242,916	$	10,603,283
Merrill Lynch & Co., Inc., Restricted Private Placement (Acquired 12/24/2007, Cost $3,926,400)(b) (c) (h)		81,800		3,824,150
Morgan Stanley		25,600		1,359,616
				33,673,392
Electronics — 1.8%
Agilent Technologies, Inc.(b)		47,900		1,759,846
Tyco Electronics Ltd.		93,860		3,485,022
				5,244,868
Foods — 0.2%
The Hershey Co.		12,400		488,560
Health Care – Products — 1.5%
Covidien Ltd.		98,060		4,343,077
Health Care – Services — 1.1%
UnitedHealth Group, Inc.		55,300		3,218,460
Holding Company – Diversified — 0.8%
China Merchants Holdings International Co. Ltd. HKD		401,409		2,449,574
Housewares — 0.1%
Hunter Douglas NV EUR		5,303		393,708
Insurance — 15.2%
Ambac Financial Group, Inc.(a)		23,700		610,749
American International Group, Inc.		189,150		11,027,445	��
Aon Corp.		37,800		1,802,682
Berkshire Hathaway, Inc. Cl. A(b)		81		11,469,600
Loews Corp.		141,300		7,113,042
Markel Corp.(b)		495		243,095
MBIA, Inc.(a)		21,200		394,956
Millea Holdings, Inc. JPY		53,200		1,793,116
Nipponkoa Insurance Co., Ltd. JPY		23,600		213,393
Principal Financial Group, Inc.		16,200		1,115,208
Progressive Corp.		251,250		4,813,950
Sun Life Financial, Inc.(a)		8,140		455,352
Transatlantic Holdings, Inc.		42,013		3,053,085
				44,105,673
Internet — 1.2%
Amazon.com, Inc.(b)		10,600		981,984
Google, Inc. Cl. A(b)		2,430		1,680,296

	Number of Shares		Market Value
Liberty Media Holding Corp. Interactive Cl. A(a) (b)		40,700	$	776,556
				3,438,836
Leisure Time — 1.1%
Harley-Davidson, Inc.		67,100		3,134,241
Manufacturing — 1.3%
Tyco International Ltd.		99,160		3,931,694
Media — 4.8%
Comcast Corp. Special, Cl. A(b)		341,950		6,196,134
Lagardere S.C.A. SA EUR		18,800		1,411,064
Liberty Media Holding Corp. Capital Cl. A(b)		8,315		968,614
News Corp., Inc. Cl. A		230,350		4,719,872
WPP Group PLC Sponsored ADR (United Kingdom)(a)		8,500		546,465
				13,842,149
Mining — 1.2%
BHP Billiton PLC GBP		23,200		720,212
Rio Tinto PLC GBP		8,300		876,394
Vulcan Materials Co.(a)		22,700		1,795,343
				3,391,949
Oil & Gas — 15.2%
Canadian Natural Resources Ltd.(a)		50,100		3,664,314
ConocoPhillips		153,760		13,577,007
Devon Energy Corp.		89,500		7,957,445
EOG Resources, Inc.		76,400		6,818,700
Occidental Petroleum Corp.		121,530		9,356,595
Transocean, Inc.		19,579		2,802,734
				44,176,795
Packaging & Containers — 1.5%
Sealed Air Corp.		193,900		4,486,846
Pharmaceuticals — 1.5%
Cardinal Health, Inc.		37,800		2,182,950
Express Scripts, Inc.(b)		29,600		2,160,800
				4,343,750
Real Estate — 0.1%
Hang Lung Development Co. HKD		67,000		360,969
Retail — 9.4%
Bed Bath & Beyond, Inc.(b)		49,400		1,451,866
Carmax, Inc.(a) (b)		87,470		1,727,533
Costco Wholesale Corp.		198,800		13,868,288
CVS Caremark Corp.		104,698		4,161,746

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Large Cap Value Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Lowe's Companies, Inc.		43,700	$	988,494
Sears Holdings Corp.(a) (b)		4,100		418,405
Wal-Mart Stores, Inc.		100,400		4,772,012
				27,388,344
Semiconductors — 0.7%
Texas Instruments, Inc.		62,700		2,094,180
Software — 3.0%
Dun & Bradstreet Corp.		11,450		1,014,814
Microsoft Corp.		214,500		7,636,200
				8,651,014
Telecommunications — 1.5%
SK Telecom Co. Ltd. ADR (South Korea)		47,300		1,411,432
Sprint Nextel Corp.		161,700		2,123,121
Virgin Media, Inc.		52,197		894,657
				4,429,210
Transportation — 1.0%
Asciano Group AUD		25,600		156,727
Kuehne & Nagel International AG CHF		10,100		969,342
Toll Holdings, Ltd. AUD		35,917		359,783
United Parcel Service, Inc. Cl. B		18,200		1,287,104
				2,772,956
TOTAL EQUITIES (Cost $232,286,858)				280,210,387
	Principal Amount
SHORT-TERM INVESTMENTS — 7.3%
Cash Equivalents — 3.6%(e)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	246,018		246,018
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		246,018		246,018
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		147,610		147,610
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		196,814		196,814
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		196,813		196,813

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008	$	123,008	$	123,008
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		123,008		123,008
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		344,424		344,424
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		196,813		196,813
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		147,610		147,610
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		123,008		123,008
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		147,610		147,610
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		147,610		147,610
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		147,610		147,610
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		147,610		147,610
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		196,813		196,813
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		246,017		246,017
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		1,045,573		1,045,573
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		196,813		196,813
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		147,610		147,610
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		123,008		123,008
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		221,415		221,415
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		73,805		73,805

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008	$	246,017	$	246,017
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		246,017		246,017
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		246,017		246,017
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		147,610		147,610
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		147,610		147,610
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		172,212		172,212
Reserve Primary Money Market Fund(d)		584,659		584,659
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		246,017		246,017
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		123,008		123,008
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		123,008		123,008
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		196,813		196,813
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		172,212		172,212
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		172,212		172,212
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		1,448,638		1,448,638
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		246,017		246,017
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		98,407		98,407

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Large Cap Value Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008	$	246,017	$	246,017
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		246,017		246,017
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		123,008		123,008
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		172,212		172,212
				10,336,366
Repurchase Agreements — 3.7%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(f)		10,879,208		10,879,208
TOTAL SHORT-TERM INVESTMENTS (Cost $21,215,574)				21,215,574
TOTAL INVESTMENTS — 103.6% (Cost $253,502,432)(g)				301,425,961
Other Assets/ (Liabilities) — (3.6%)				(10,488,005	)
NET ASSETS — 100.0%			$	290,937,956

Notes to Portfolio of Investments

ADR - American Depository Receipt

AUD - Australian Dollar

CHF - Swiss Franc

EUR - Euro

GBP - British Pound

HKD - Hong Kong Dollar

JPY - Japanese Yen

(a) Denotes all or a portion of security on loan. (Note 2).

(b) Non-income producing security.

(d) Principal amount represents shares owned of the fund.

(e) Represents investments of security lending collateral. (Note 2).

(f) Maturity value of $10,880,749. Collateralized by U.S. Government Agency obligations with rates ranging from 5.183% to 5.215%, maturity dates ranging from 12/25/2035 to 1/01/2036, and an aggregate market value, including accrued interest, of $11,099,760.

(g) See Note 6 for aggregate cost for Federal tax purposes.

(h) Restricted security. (Note 2).

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

MML Equity Index Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.0%
COMMON STOCK — 99.0%
Advertising — 0.1%
Interpublic Group of Companies, Inc.(a)		13,919	$	112,883
Omnicom Group, Inc.		10,412		494,882
				607,765
Aerospace & Defense — 2.3%
Boeing Co.		24,411		2,134,986
General Dynamics Corp.		12,514		1,113,621
Goodrich Corp.(b)		4,039		285,194
L-3 Communications Holdings, Inc.		3,900		413,166
Lockheed Martin Corp.		10,840		1,141,018
Northrop Grumman Corp.		10,790		848,526
Raytheon Co.		13,588		824,792
Rockwell Collins, Inc.		5,268		379,138
United Technologies Corp.		30,822		2,359,116
				9,499,557
Agriculture — 1.6%
Altria Group, Inc.		66,654		5,037,709
Archer-Daniels-Midland Co.		20,361		945,361
Reynolds American, Inc.(b)		5,400		356,184
UST, Inc.(b)		5,022		275,206
				6,614,460
Airlines — 0.1%
Southwest Airlines Co.		23,340		284,748
Apparel — 0.2%
Nike, Inc. Cl. B		12,162		781,287
VF Corp.		2,851		195,750
				977,037
Auto Manufacturers — 0.4%
Ford Motor Co.(a) (b)		67,067		451,361
General Motors Corp.(b)		18,130		451,256
Paccar, Inc.		11,935		650,219
				1,552,836
Automotive & Parts — 0.2%
The Goodyear Tire & Rubber Co.(a)		7,165		202,196
Johnson Controls, Inc.		18,050		650,522
				852,718
Banks — 5.3%
Bank of America Corp.		140,355		5,791,047
The Bank of New York Mellon Corp.		35,906		1,750,777

	Number of Shares		Market Value
BB&T Corp.(b)		16,683	$	511,668
Capital One Financial Corp.		12,234		578,179
Comerica, Inc.		4,869		211,948
Commerce Bancorp, Inc.(b)		5,800		221,212
Fifth Third Bancorp		17,522		440,328
First Horizon National Corp.(b)		4,000		72,600
Huntington Bancshares, Inc.		11,334		167,290
KeyCorp		12,210		286,325
M&T Bank Corp.		2,400		195,768
Marshall & Ilsley Corp.		7,800		206,544
National City Corp.(b)		19,998		329,167
Northern Trust Corp.		5,788		443,245
PNC Financial Services Group, Inc.		10,649		699,107
Regions Financial Corp.(b)		22,689		536,595
State Street Corp.		12,322		1,000,546
SunTrust Banks, Inc.		11,090		693,014
U.S. Bancorp		54,032		1,714,976
Wachovia Corp.		62,851		2,390,224
Wells Fargo & Co.		105,258		3,177,739
Zions Bancorp(b)		3,293		153,750
				21,572,049
Beverages — 2.4%
Anheuser-Busch Cos., Inc.		23,087		1,208,374
Brown-Forman Corp. Cl. B(b)		2,480		183,793
The Coca-Cola Co.		62,991		3,865,758
Coca-Cola Enterprises, Inc.		8,574		223,181
Constellation Brands, Inc. Cl. A(a)		6,500		153,660
Molson Coors Brewing Co. Cl. B		3,978		205,344
The Pepsi Bottling Group, Inc.		4,038		159,339
PepsiCo, Inc.		51,008		3,871,507
				9,870,956
Biotechnology — 0.8%
Amgen, Inc.(a)		33,769		1,568,232
Biogen Idec, Inc.(a)		8,937		508,694
Celgene Corp.(a)		12,400		573,004
Genzyme Corp.(a)		8,300		617,852
Millipore Corp.(a)		1,715		125,504
				3,393,286
Building Materials — 0.1%
Masco Corp.		11,667		252,124
Trane, Inc.		5,500		256,905
				509,029

	Number of Shares		Market Value
Chemicals — 1.9%
Air Products & Chemicals, Inc.		6,858	$	676,405
Ashland, Inc.		1,703		80,773
The Dow Chemical Co.		29,868		1,177,397
Du Pont (E.I.) de Nemours & Co.		28,304		1,247,923
Eastman Chemical Co.		2,500		152,725
Ecolab, Inc.		5,616		287,595
Hercules, Inc.		3,606		69,776
International Flavors & Fragrances, Inc.		2,546		122,539
Monsanto Co.		17,070		1,906,548
PPG Industries, Inc.		5,089		357,400
Praxair, Inc.		10,064		892,777
Rohm & Haas Co.(b)		4,540		240,938
The Sherwin-Williams Co.(b)		3,229		187,411
Sigma-Aldrich Corp.		4,068		222,113
				7,622,320
Coal — 0.2%
CONSOL Energy, Inc.		5,700		407,664
Peabody Energy Corp.		8,400		517,776
				925,440
Commercial Services — 0.7%
Apollo Group, Inc. Cl. A(a)		4,288		300,803
Block (H&R), Inc.		10,048		186,591
Convergys Corp.(a)		4,216		69,395
Donnelley (R.R.) & Sons Co.		6,822		257,462
Equifax, Inc.		4,159		151,221
McKesson Corp.		9,387		614,942
Monster Worldwide, Inc.(a)		4,176		135,302
Moody's Corp.		6,692		238,904
Robert Half International, Inc.		5,380		145,475
Western Union		23,833		578,665
				2,678,760
Computers — 4.8%
Affiliated Computer Services, Inc. Cl. A(a)		3,100		139,810
Apple, Inc.(a)		27,552		5,457,500
Cognizant Technology Solutions Corp. Cl. A(a) (b)		8,800		298,672
Computer Sciences Corp.(a)		5,487		271,442
Dell, Inc.(a)		70,347		1,724,205
Electronic Data Systems Corp.		16,071		333,152
EMC Corp.(a)		66,532		1,232,838
Hewlett-Packard Co.		80,615		4,069,445

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
International Business Machines Corp.		43,165	$	4,666,137
Lexmark International, Inc. Cl. A(a)		2,997		104,475
Network Appliance, Inc.(a)		11,520		287,539
SanDisk Corp.(a)		7,236		240,018
Sun Microsystems, Inc.(a)		27,302		494,985
Teradata Corp.(a)		5,600		153,496
Unisys Corp.(a)		10,615		50,209
				19,523,923
Cosmetics & Personal Care — 2.2%
Avon Products, Inc.		13,456		531,916
Colgate-Palmolive Co.		15,877		1,237,771
The Estee Lauder Cos., Inc. Cl. A		3,600		156,996
The Procter & Gamble Co.		97,686		7,172,106
				9,098,789
Distribution & Wholesale — 0.1%
Genuine Parts Co.		5,329		246,733
W.W. Grainger, Inc.		2,079		181,954
				428,687
Diversified Financial — 6.5%
American Express Co.		36,908		1,919,954
Ameriprise Financial, Inc.		7,421		408,971
The Bear Stearns Cos., Inc.(b)		3,658		322,819
The Charles Schwab Corp.		29,295		748,487
CIT Group, Inc.		6,000		144,180
Citigroup, Inc.		156,690		4,612,954
CME Group, Inc.		1,730		1,186,780
Countrywide Financial Corp.(b)		18,202		162,726
Discover Financial Services		14,995		226,125
E*TRADE Financial Corp.(a) (b)		13,200		46,860
Fannie Mae		30,576		1,222,428
Federated Investors, Inc. Cl. B		2,700		111,132
Franklin Resources, Inc.		5,128		586,797
Freddie Mac		20,386		694,551
The Goldman Sachs Group, Inc.		12,613		2,712,426
IntercontinentalExchange, Inc.(a) (b)		2,200		423,500
JP Morgan Chase & Co.		106,147		4,633,317
Janus Capital Group, Inc.		5,450		179,033
Legg Mason, Inc.		4,085		298,818
Lehman Brothers Holdings, Inc.		16,444		1,076,095
Merrill Lynch & Co., Inc.		26,969		1,447,696
Morgan Stanley		33,091		1,757,463
NYSE Euronext		8,300		728,491

	Number of Shares		Market Value
SLM Corp.(b)		16,242	$	327,114
T. Rowe Price Group, Inc.		8,200		499,216
				26,477,933
Electric — 3.3%
AES Corp.(a)		20,549		439,543
Allegheny Energy, Inc.		5,120		325,683
Ameren Corp.		6,381		345,914
American Electric Power Co., Inc.		12,357		575,342
CenterPoint Energy, Inc.		10,263		175,805
CMS Energy Corp.(b)		7,038		122,320
Consolidated Edison, Inc.		7,850		383,473
Constellation Energy Group, Inc.		5,625		576,731
Dominion Resources, Inc.		18,092		858,465
DTE Energy Co.		5,637		247,803
Duke Energy Corp.		38,973		786,085
Dynegy, Inc. Cl. A(a)		14,209		101,452
Edison International		10,230		545,975
Entergy Corp.		6,360		760,147
Exelon Corp.		21,136		1,725,543
FirstEnergy Corp.		9,957		720,289
FPL Group, Inc.		13,172		891,349
Integrys Energy Group, Inc.		2,300		118,887
Pepco Holdings, Inc.		6,100		178,913
PG&E Corp.		10,821		466,277
Pinnacle West Capital Corp.		3,300		139,953
PPL Corp.		12,378		644,770
Progress Energy, Inc.		7,872		381,241
Public Service Enterprise Group, Inc.		7,898		775,900
Southern Co.		23,387		906,246
Teco Energy, Inc.(b)		6,861		118,078
Xcel Energy, Inc.		12,772		288,264
				13,600,448
Electrical Components & Equipment — 0.4%
Emerson Electric Co.		24,714		1,400,295
Molex, Inc.		4,390		119,847
				1,520,142
Electronics — 0.6%
Agilent Technologies, Inc.(a)		12,283		451,277
Applera Corp. - Applied Biosystems Group		5,638		191,241
Jabil Circuit, Inc.		5,778		88,230
PerkinElmer, Inc.		4,108		106,890
Thermo Fisher Scientific, Inc.(a)		13,654		787,563
Tyco Electronics Ltd.		15,268		566,901
Waters Corp.(a)		3,100		245,117
				2,437,219

	Number of Shares		Market Value
Engineering & Construction — 0.2%
Fluor Corp.		2,727	$	397,378
Jacobs Engineering Group, Inc.(a)		3,800		363,318
				760,696
Entertainment — 0.1%
International Game Technology		9,874		433,765
Environmental Controls — 0.2%
Allied Waste Industries, Inc.(a)		7,760		85,515
Waste Management, Inc.		16,453		537,520
				623,035
Foods — 1.8%
Campbell Soup Co.		6,802		243,035
ConAgra Foods, Inc.		15,472		368,079
Dean Foods Co.		4,200		108,612
General Mills, Inc.		10,608		604,656
Heinz (H. J.) Co.		10,122		472,495
The Hershey Co.		5,444		214,494
Kellogg Co.		7,764		407,067
Kraft Foods, Inc. Cl. A		49,330		1,609,638
The Kroger Co.		21,918		585,430
McCormick & Co., Inc.		4,100		155,431
Safeway, Inc.		13,760		470,730
Sara Lee Corp.		22,665		364,000
SuperValu, Inc.		6,595		247,444
Sysco Corp.		19,230		600,168
Tyson Foods, Inc. Cl. A		7,800		119,574
Whole Foods Market, Inc.(b)		4,400		179,520
Wrigley (Wm.) Jr. Co.		6,867		402,063
				7,152,436
Forest Products & Paper — 0.3%
International Paper Co.		13,520		437,778
MeadWestvaco Corp.		5,701		178,441
Plum Creek Timber Co., Inc.(b)		5,600		257,824
Weyerhaeuser Co.		6,510		480,047
				1,354,090
Gas — 0.2%
Nicor, Inc.(b)		1,489		63,059
NiSource, Inc.		8,446		159,545
Sempra Energy		8,217		508,468
				731,072
Hand & Machine Tools — 0.1%
The Black & Decker Corp.		1,950		135,818
Snap-on, Inc.		1,853		89,389
The Stanley Works		2,305		111,746
				336,953

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Health Care – Products — 3.2%
Bard (C.R.), Inc.		3,220	$	305,256
Baxter International, Inc.		20,092		1,166,341
Becton, Dickinson & Co.		7,548		630,862
Boston Scientific Corp.(a)		40,872		475,341
Covidien Ltd.		15,668		693,936
Johnson & Johnson		89,996		6,002,733
Medtronic, Inc.		35,581		1,788,657
Patterson Cos., Inc.(a)		4,300		145,985
St. Jude Medical, Inc.(a)		10,644		432,572
Stryker Corp.		7,800		582,816
Varian Medical Systems, Inc.(a)		4,100		213,856
Zimmer Holdings, Inc.(a)		7,322		484,350
				12,922,705
Health Care – Services — 1.5%
Aetna, Inc.		15,744		908,901
Coventry Health Care, Inc.(a)		4,885		289,436
Humana, Inc.(a)		5,203		391,838
Laboratory Corp. of America Holdings(a)		3,600		271,908
Quest Diagnostics, Inc.		4,928		260,691
Tenet Healthcare Corp.(a)		15,359		78,024
UnitedHealth Group, Inc.		40,680		2,367,576
WellPoint, Inc.(a)		17,887		1,569,227
				6,137,601
Holding Company – Diversified — 0.1%
Leucadia National Corp.		5,100		240,210
Home Builders — 0.1%
Centex Corp.		3,846		97,150
D.R. Horton, Inc.(b)		8,500		111,945
KB Home(b)		2,442		52,747
Lennar Corp. Cl. A		4,300		76,927
Pulte Homes, Inc.		6,744		71,082
				409,851
Home Furnishing — 0.1%
Harman International Industries, Inc.		2,000		147,420
Whirlpool Corp.(b)		2,442		199,340
				346,760
Household Products — 0.4%
Avery Dennison Corp.		2,928		155,594
The Clorox Co.		4,370		284,793
Fortune Brands, Inc.		4,780		345,881
Kimberly-Clark Corp.		13,241		918,131
				1,704,399
Housewares — 0.1%
Newell Rubbermaid, Inc.		8,735		226,062

	Number of Shares		Market Value
Insurance — 4.4%
ACE Ltd.		10,200	$	630,156
AFLAC, Inc.		15,220		953,229
Allstate Corp.		17,904		935,126
Ambac Financial Group, Inc.(b)		3,175		81,820
American International Group, Inc.		79,832		4,654,206
Aon Corp.		9,246		440,942
Assurant, Inc.		3,200		214,080
Chubb Corp.		12,046		657,471
Cigna Corp.		9,120		490,018
Cincinnati Financial Corp.		5,482		216,758
Genworth Financial, Inc. Cl. A		13,800		351,210
The Hartford Financial Services Group, Inc.		9,558		833,362
Lincoln National Corp.		8,580		499,528
Loews Corp.		13,974		703,451
Marsh & McLennan Cos., Inc.		16,342		432,573
MBIA, Inc.(b)		4,075		75,917
Metlife, Inc.		23,332		1,437,718
MGIC Investment Corp.(b)		2,589		58,071
Principal Financial Group, Inc.		8,336		573,850
Progressive Corp.		23,092		442,443
Prudential Financial, Inc.		14,300		1,330,472
Safeco Corp.		2,959		164,757
Torchmark Corp.		3,026		183,164
St. Paul Travelers Cos.		20,263		1,090,149
Unum Group		10,570		251,460
XL Capital Ltd. Cl. A		5,727		288,125
				17,990,056
Internet — 2.3%
Akamai Technologies, Inc.(a)		5,200		179,920
Amazon.com, Inc.(a)		9,633		892,401
eBay, Inc.(a)		35,123		1,165,732
Expedia, Inc.(a)		6,465		204,423
Google, Inc. Cl. A(a)		7,326		5,065,782
IAC/InterActiveCorp(a)		5,900		158,828
Symantec Corp.(a)		28,089		453,356
VeriSign, Inc.(a)		7,300		274,553
Yahoo!, Inc.(a)		41,716		970,314
				9,365,309
Investment Companies — 0.0%
American Capital Strategies Ltd.(b)		5,500		181,280

	Number of Shares		Market Value
Iron & Steel — 0.3%
Allegheny Technologies, Inc.		3,044	$	263,002
Nucor Corp.		9,056		536,296
United States Steel Corp.		3,754		453,896
				1,253,194
Leisure Time — 0.2%
Brunswick Corp.		2,939		50,110
Carnival Corp.		13,585		604,397
Harley-Davidson, Inc.		7,622		356,024
				1,010,531
Lodging — 0.3%
Harrah's Entertainment, Inc.		5,823		516,791
Marriott International, Inc. Cl. A		9,828		335,921
Starwood Hotels & Resorts Worldwide, Inc.		6,240		274,747
Wyndham Worldwide Corp.		5,888		138,721
				1,266,180
Machinery – Construction & Mining — 0.4%
Caterpillar, Inc.		20,004		1,451,490
Terex Corp.(a)		3,200		209,824
				1,661,314
Machinery – Diversified — 0.5%
Cummins, Inc.		3,178		404,782
Deere & Co.		13,786		1,283,752
The Manitowoc Co., Inc.		3,900		190,437
Rockwell Automation, Inc.		4,668		321,905
				2,200,876
Manufacturing — 5.0%
3M Co.		22,372		1,886,407
Cooper Industries Ltd. Cl. A		5,728		302,897
Danaher Corp.		7,610		667,701
Dover Corp.		6,335		291,980
Eastman Kodak Co.(b)		8,960		195,955
Eaton Corp.		4,494		435,693
General Electric Co.		318,035		11,789,557
Honeywell International, Inc.		23,590		1,452,436
Illinois Tool Works, Inc.		13,138		703,409
Ingersoll-Rand Co. Ltd. Cl. A		8,766		407,356
ITT Corp.		5,674		374,711
Leggett & Platt, Inc.		5,650		98,536
Pall Corp.		3,892		156,925
Parker Hannifin Corp.		5,421		408,256
Textron, Inc.		7,864		560,703
Tyco International Ltd.		15,568		617,271
				20,349,793
Media — 2.7%
CBS Corp. Cl. B		21,414		583,532
Clear Channel Communications, Inc.		15,749		543,655

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Comcast Corp. Cl. A(a)		96,277	$	1,758,018
The DIRECTV Group, Inc.(a)		23,100		534,072
Gannett Co., Inc.		7,370		287,430
The McGraw-Hill Cos., Inc.(b)		10,860		475,777
Meredith Corp.		1,144		62,897
New York Times Co. Cl. A(b)		4,765		83,530
News Corp., Inc. Cl. A		72,700		1,489,623
The Scripps (E.W.) Co. Cl. A(b)		2,700		121,527
Time Warner, Inc.		115,308		1,903,735
Viacom, Inc. Cl. B(a)		20,914		918,543
The Walt Disney Co.		60,032		1,937,833
Washington Post Co. Cl. B		182		144,040
				10,844,212
Metal Fabricate & Hardware — 0.1%
Precision Castparts Corp.		4,400		610,280
Mining — 0.8%
Alcoa, Inc.		26,688		975,446
Freeport-McMoran Copper & Gold, Inc.		11,933		1,222,417
Newmont Mining Corp.		13,909		679,176
Titanium Metals Corp.(b)		2,800		74,060
Vulcan Materials Co.		3,410		269,697
				3,220,796
Office Equipment/Supplies — 0.2%
Pitney Bowes, Inc.		6,902		262,552
Xerox Corp.		29,414		476,213
				738,765
Oil & Gas — 10.2%
Anadarko Petroleum Corp.		14,244		935,688
Apache Corp.		10,600		1,139,924
Chesapeake Energy Corp.(b)		14,881		583,335
Chevron Corp.		66,466		6,203,272
ConocoPhillips		50,490		4,458,267
Devon Energy Corp.		13,870		1,233,182
ENSCO International, Inc.		4,500		268,290
EOG Resources, Inc.		7,700		687,225
Exxon Mobil Corp.		171,936		16,108,684
Hess Corp.		8,517		859,025
Marathon Oil Corp.		22,380		1,362,047
Murphy Oil Corp.		5,700		483,588
Nabors Industries Ltd.(a)		8,630		236,376
Noble Corp.		8,280		467,903
Noble Energy, Inc.		5,400		429,408
Occidental Petroleum Corp.		26,008		2,002,356
Range Resources Corp.		3,600		184,896
Rowan Companies, Inc.		3,521		138,939
Sunoco, Inc.		3,786		274,258
Tesoro Corp.		4,300		205,110
Transocean, Inc.		9,899		1,417,042

	Number of Shares		Market Value
Valero Energy Corp.		17,300	$	1,211,519
XTO Energy, Inc.		15,673		804,965
				41,695,299
Oil & Gas Services — 1.9%
Baker Hughes, Inc.		9,898		802,728
BJ Services Co.		9,100		220,766
Halliburton Co.		27,913		1,058,182
National Oilwell Varco, Inc.(a)		11,500		844,790
Schlumberger Ltd.		37,878		3,726,059
Smith International, Inc.		6,200		457,870
Weatherford International Ltd.(a)		10,438		716,047
				7,826,442
Packaging & Containers — 0.1%
Ball Corp.		3,320		149,400
Bemis Co., Inc.(b)		3,466		94,899
Pactiv Corp.(a)		4,159		110,754
Sealed Air Corp.		5,282		122,225
				477,278
Pharmaceuticals — 5.7%
Abbott Laboratories		48,198		2,706,318
Allergan, Inc.		9,832		631,608
AmerisourceBergen Corp.		5,852		262,579
Barr Pharmaceuticals, Inc.(a)		3,300		175,230
Bristol-Myers Squibb Co.		61,542		1,632,094
Cardinal Health, Inc.		11,269		650,785
Eli Lilly & Co.		30,595		1,633,467
Express Scripts, Inc.(a)		8,066		588,818
Forest Laboratories, Inc.(a)		9,780		356,481
Gilead Sciences, Inc.(a)		29,188		1,342,940
Hospira, Inc.(a)		4,839		206,335
King Pharmaceuticals, Inc.(a)		7,567		77,486
Medco Health Solutions, Inc.(a)		8,420		853,788
Merck & Co., Inc.		68,515		3,981,407
Mylan Inc.(b)		8,624		121,253
Pfizer, Inc.		215,741		4,903,793
Schering-Plough Corp.		50,288		1,339,672
Watson Pharmaceutical, Inc.(a)		3,370		91,462
Wyeth		41,856		1,849,617
				23,405,133
Pipelines — 0.5%
El Paso Corp.		21,646		373,177
Questar Corp.		5,200		281,320
Spectra Energy Corp.(b)		19,486		503,129
The Williams Cos., Inc.		19,318		691,198
				1,848,824

	Number of Shares		Market Value
Real Estate — 0.0%
CB Richard Ellis Group, Inc. Cl. A(a) (b)		6,600	$	142,230
Real Estate Investment Trusts (REITS) — 0.9%
Apartment Investment & Management Co. Cl. A(b)		3,200		111,136
AvalonBay Communities, Inc.(b)		2,300		216,522
Boston Properties, Inc.(b)		3,600		330,516
Developers Diversified Realty Corp. REIT		4,000		153,160
Equity Residential REIT		9,200		335,524
General Growth Properties, Inc. REIT(b)		8,100		333,558
Host Hotels & Resorts, Inc. REIT(b)		16,300		277,752
Kimco Realty Corp.(b)		7,500		273,000
ProLogis(b)		7,800		494,364
Public Storage		3,620		265,744
Simon Property Group, Inc. REIT		7,200		625,392
Vornado Realty Trust		4,400		386,980
				3,803,648
Retail — 5.0%
Abercrombie & Fitch Co., Cl. A		2,700		215,919
AutoNation, Inc.(a)		4,868		76,233
AutoZone, Inc.(a)		1,554		186,340
Bed Bath & Beyond, Inc.(a)		8,550		251,285
Best Buy Co., Inc.		10,895		573,622
Big Lots, Inc.(a) (b)		2,874		45,955
Circuit City Stores, Inc.(b)		4,500		18,900
Coach, Inc.(a)		11,300		345,554
Costco Wholesale Corp.		13,642		951,666
CVS Caremark Corp.		46,283		1,839,749
Darden Restaurants, Inc.		4,392		121,702
Dillards, Inc. Cl. A(b)		2,101		39,457
Family Dollar Stores, Inc.(b)		4,851		93,285
Gamestop Corp. Cl. A(a)		5,000		310,550
The Gap, Inc.		15,445		328,670
The Home Depot, Inc.		52,715		1,420,142
J.C. Penney Co., Inc.		6,909		303,927
Jones Apparel Group, Inc.		2,996		47,906
Kohl's Corp.(a)		9,923		454,473
Limited Brands, Inc.(b)		10,030		189,868
Liz Claiborne, Inc.(b)		3,274		66,626
Lowe's Companies, Inc.		46,264		1,046,492
Macy's, Inc.		13,500		349,245
McDonald's Corp.		37,277		2,195,988
Nordstrom, Inc.(b)		6,170		226,624
Office Depot, Inc.(a)		8,565		119,139
OfficeMax, Inc.		2,242		46,320
Polo Ralph Lauren Corp.		1,900		117,401
RadioShack Corp.(b)		4,281		72,178

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Sears Holdings Corp.(a) (b)		2,308	$	235,531
Staples, Inc.		22,259		513,515
Starbucks Corp.(a)		23,098		472,816
Target Corp.		26,168		1,308,400
Tiffany & Co.		4,192		192,958
The TJX Cos., Inc.		13,876		398,657
Walgreen Co.		31,004		1,180,632
Wal-Mart Stores, Inc.		74,334		3,533,095
Wendy's International, Inc.		2,675		69,122
Yum! Brands, Inc.		16,296		623,648
				20,583,590
Savings & Loans — 0.2%
Hudson City Bancorp, Inc.		15,600		234,312
Sovereign Bancorp, Inc.(b)		11,355		129,447
Washington Mutual, Inc.(b)		27,601		375,650
				739,409
Semiconductors — 2.7%
Advanced Micro Devices, Inc.(a) (b)		18,360		137,700
Altera Corp.		10,620		205,178
Analog Devices, Inc.		10,370		328,729
Applied Materials, Inc.		43,206		767,339
Broadcom Corp. Cl. A(a)		14,447		377,645
Intel Corp.		184,287		4,913,091
KLA-Tencor Corp.		5,706		274,801
Linear Technology Corp.(b)		7,030		223,765
LSI Corp.(a)		22,228		118,031
MEMC Electronic Materials, Inc.(a)		7,100		628,279
Microchip Technology, Inc.(b)		6,800		213,656
Micron Technology, Inc.(a)		22,717		164,698
National Semiconductor Corp.		7,496		169,709
Novellus Systems, Inc.(a)		3,650		100,631
Nvidia Corp.(a)		17,200		585,144
QLogic Corp.(a)		4,300		61,060
Teradyne, Inc.(a)		5,460		56,456
Texas Instruments, Inc.		44,026		1,470,468
Xilinx, Inc.		9,311		203,632
				11,000,012
Software — 4.1%
Adobe Systems, Inc.(a)		18,312		782,472
Autodesk, Inc.(a)		7,180		357,277
Automatic Data Processing, Inc.		16,804		748,282
BMC Software, Inc.(a)		6,565		233,977
CA, Inc.		12,229		305,114
Citrix Systems, Inc.(a)		5,592		212,552
Compuware Corp.(a)		8,978		79,725

	Number of Shares		Market Value
Electronic Arts, Inc.(a)		9,600	$	560,736
Fidelity National Information Services, Inc.		5,100		212,109
Fiserv, Inc.(a)		5,321		295,262
IMS Health, Inc.		6,324		145,705
Intuit, Inc.(a)		10,820		342,020
Microsoft Corp.		252,508		8,989,285
Novell, Inc.(a)		11,076		76,092
Oracle Corp.(a)		124,361		2,808,071
Paychex, Inc.		10,397		376,579
Total System Services, Inc.		5,015		140,416
				16,665,674
Telecommunications — 6.1%
American Tower Corp. Cl. A(a)		12,900		549,540
AT&T, Inc.		190,795		7,929,440
CenturyTel, Inc.		3,431		142,249
Ciena Corp.(a) (b)		2,748		93,734
Cisco Systems, Inc.(a)		190,373		5,153,397
Citizens Communications Co.		10,101		128,586
Corning, Inc.		49,791		1,194,486
Embarq Corp.		4,727		234,128
JDS Uniphase Corp.(a) (b)		7,098		94,403
Juniper Networks, Inc.(a)		16,700		554,440
Motorola, Inc.		72,909		1,169,460
Qualcomm, Inc.		51,960		2,044,626
Qwest Communications International, Inc.(a) (b)		49,358		346,000
Sprint Nextel Corp.		89,459		1,174,597
Tellabs, Inc.(a)		13,912		90,984
Verizon Communications, Inc.		90,716		3,963,382
Windstream Corp.		14,731		191,798
				25,055,250
Textiles — 0.0%
Cintas Corp.		4,290		144,230
Toys, Games & Hobbies — 0.1%
Hasbro, Inc.		4,591		117,438
Mattel, Inc.		11,689		222,559
				339,997
Transportation — 1.7%
Burlington Northern Santa Fe Corp.		9,393		781,779
C.H. Robinson Worldwide, Inc.		5,500		297,660
CSX Corp.		13,230		581,855
Expeditors International of Washington, Inc.		6,700		299,356
FedEx Corp.		9,503		847,383

	Number of Shares		Market Value
Norfolk Southern Corp.		12,289	$	619,857
Ryder System, Inc.(b)		1,982		93,174
Union Pacific Corp.		8,317		1,044,782
United Parcel Service, Inc. Cl. B		33,000		2,333,760
				6,899,606
TOTAL EQUITIES (Cost $305,571,613)				404,746,945
	Principal Amount
SHORT-TERM INVESTMENTS — 4.0%
Cash Equivalents — 3.1%(e)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	305,652		305,652
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		305,656		305,656
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		183,391		183,391
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		244,522		244,522
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		244,522		244,522
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		152,826		152,826
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		152,826		152,826
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		427,913		427,913
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		244,522		244,522
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		183,391		183,391
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		152,826		152,826
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		183,391		183,391

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Index Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Barclays Eurodollar Time Deposit 5.150% 02/12/2008	$	183,391	$	183,391
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		183,391		183,391
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		183,391		183,391
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		244,522		244,522
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		305,652		305,652
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		1,299,022		1,299,022
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		244,522		244,522
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		183,391		183,391
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		152,826		152,826
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		275,087		275,087
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		91,696		91,696
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		305,652		305,652
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		305,652		305,652
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		305,652		305,652
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		183,391		183,391
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		183,391		183,391
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		213,957		213,957
Reserve Primary Money Market Fund(c)		726,383		726,383

	Principal Amount		Market Value
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008	$	305,652	$	305,652
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		152,826		152,826
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		152,826		152,826
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		244,522		244,522
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		213,957		213,957
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		213,957		213,957
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		1,799,794		1,799,794
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		305,652		305,652
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		122,261		122,261
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		305,652		305,652
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		305,652		305,652
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		152,826		152,826
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		213,957		213,957
				12,841,941
Repurchase Agreements — 0.8%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(f)		3,126,803		3,126,803

	Principal Amount		Market Value
U.S. Treasury Bills — 0.1%
U.S. Treasury Bill(d) 4.650% 01/17/2008	$	445,000	$	444,081
TOTAL SHORT-TERM INVESTMENTS (Cost $16,412,825)				16,412,825
TOTAL INVESTMENTS — 103.0% (Cost $321,984,438)(g)				421,159,770
Other Assets/ (Liabilities) — (3.0%)				(12,297,420	)
NET ASSETS — 100.0%			$	408,862,350

Notes to Portfolio of Investments

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) This security is held as collateral for open futures contracts. (Note 2).

(e) Represents investments of security lending collateral. (Note 2).

(f) Maturity value of $3,127,246. Collateralized by a U.S. Government Agency obligation with a rate of 4.735%, maturity date of 5/01/2035, and an aggregate market value, including accrued interest, of $3,191,334.

(g) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Growth Equity Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.5%
COMMON STOCK — 99.5%
Advertising — 0.6%
Omnicom Group, Inc.		2,250	$	106,942
Aerospace & Defense — 2.6%
General Dynamics Corp.		3,000		266,970
Lockheed Martin Corp.		250		26,315
Rockwell Collins, Inc.		1,050		75,568
United Technologies Corp.		1,450		110,983
				479,836
Auto Manufacturers — 0.1%
Paccar, Inc.		200		10,896
Banks — 3.9%
The Bank of New York Mellon Corp.		3,000		146,280
Northern Trust Corp.		2,300		176,134
State Street Corp.		4,900		397,880
				720,294
Beverages — 0.5%
PepsiCo, Inc.(a)		1,250		94,875
Biotechnology — 1.7%
Celgene Corp.(a) (b)		2,250		103,972
Genentech, Inc.(b)		3,100		207,917
				311,889
Chemicals — 1.6%
Monsanto Co.(a)		2,400		268,056
Praxair, Inc.		300		26,613
				294,669
Commercial Services — 1.7%
Accenture Ltd. Cl. A		2,750		99,082
Apollo Group, Inc. Cl. A(b)		400		28,060
Fastenal Co.(a)		100		4,042
McKesson Corp.		1,500		98,265
Monster Worldwide, Inc.(b)		2,250		72,900
				302,349
Computers — 4.6%
Apple, Inc.(b)		2,250		445,680
Dell, Inc.(b)		5,350		131,128
EMC Corp.(b)		7,850		145,460
Hewlett-Packard Co.		2,300		116,104
Network Appliance, Inc.(b)		150		3,744
				842,116
Cosmetics & Personal Care — 1.3%
The Procter & Gamble Co.		3,200		234,944

	Number of Shares		Market Value
Diversified Financial — 8.2%
American Express Co.		4,150	$	215,883
Ameriprise Financial, Inc.		2,100		115,731
BlackRock, Inc.		150		32,520
The Charles Schwab Corp.		7,500		191,625
CME Group, Inc.		200		137,200
Franklin Resources, Inc.		2,150		246,024
The Goldman Sachs Group, Inc.		1,150		247,307
Merrill Lynch & Co., Inc.		1,200		64,416
Morgan Stanley		2,250		119,497
UBS AG Registered CHF		2,850		133,235
				1,503,438
Electronics — 0.2%
Thermo Fisher Scientific, Inc.(b)		650		37,492
Engineering & Construction — 1.7%
Foster Wheeler Ltd.(b)		1,300		201,526
McDermott International, Inc.(b)		1,900		112,157
				313,683
Entertainment — 0.4%
International Game Technology		1,700		74,681
Foods — 0.3%
Sysco Corp.		1,750		54,617
Health Care – Products — 3.6%
Alcon, Inc.		750		107,280
Baxter International, Inc.		900		52,245
Medtronic, Inc.		3,650		183,485
St. Jude Medical, Inc.(b)		3,650		148,336
Stryker Corp.		2,100		156,912
				648,258
Health Care – Services — 4.3%
Aetna, Inc.		4,050		233,806
Humana, Inc.(b)		1,350		101,668
Laboratory Corp. of America Holdings(b)		1,750		132,177
UnitedHealth Group, Inc.		1,450		84,390
WellPoint, Inc.(b)		2,550		223,711
				775,752
Insurance — 1.6%
American International Group, Inc.		1,400		81,620
Cigna Corp.		300		16,119

	Number of Shares		Market Value
The Hartford Financial Services Group, Inc.		300	$	26,157
Prudential Financial, Inc.		1,900		176,776
				300,672
Internet — 6.8%
Amazon.com, Inc.(b)		4,050		375,192
eBay, Inc.(b)		4,200		139,398
Google, Inc. Cl. A(b)		870		601,588
McAfee, Inc.(b)		550		20,625
VeriSign, Inc.(b)		2,350		88,384
Yahoo!, Inc.(b)		400		9,304
				1,234,491
Lodging — 1.7%
Las Vegas Sands Corp.(b)		800		82,440
Marriott International, Inc. Cl. A		2,900		99,122
MGM Mirage(b)		1,000		84,020
Wynn Resorts Ltd.		450		50,459
				316,041
Manufacturing — 6.1%
Danaher Corp.		5,150		451,861
General Electric Co.		15,600		578,292
Illinois Tool Works, Inc.		1,450		77,633
				1,107,786
Media — 2.0%
Discovery Holding Co. Cl. A(b)		1,450		36,453
The McGraw-Hill Cos., Inc.		1,750		76,668
Rogers Communications, Inc. Cl. B(a)		3,900		176,475
Shaw Communications, Inc. Cl. B(a)		1,400		33,152
Viacom, Inc. Cl. B(b)		800		35,136
				357,884
Mining — 1.2%
Freeport-McMoran Copper & Gold, Inc.		2,150		220,246
Oil & Gas — 2.9%
EOG Resources, Inc.		150		13,388
Exxon Mobil Corp.		2,150		201,434
Murphy Oil Corp.		2,050		173,922
Total SA Sponsored ADR (France)		1,800		148,680
				537,424
Oil & Gas Services — 5.6%
Baker Hughes, Inc.		2,500		202,750

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Growth Equity Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Schlumberger Ltd.		4,900	$	482,013
Smith International, Inc.		4,500		332,325
				1,017,088
Pharmaceuticals — 7.0%
Allergan, Inc.		2,600		167,024
Cardinal Health, Inc.		1,200		69,300
Express Scripts, Inc.(b)		1,950		142,350
Gilead Sciences, Inc.(b)		6,400		294,464
Medco Health Solutions, Inc.(b)		1,500		152,100
Merck & Co., Inc.		2,950		171,425
Novartis AG CHF		150		8,226
Roche Holding AG CHF		750		130,050
Schering-Plough Corp.		3,750		99,900
Wyeth		1,150		50,819
				1,285,658
Retail — 5.9%
Bed Bath & Beyond, Inc.(a) (b)		2,100		61,719
Coach, Inc.(b)		2,900		88,682
Costco Wholesale Corp.		650		45,344
CVS Caremark Corp.		9,000		357,750
Kohl's Corp.(b)		4,350		199,230
McDonald's Corp.		1,050		61,856
Target Corp.		2,650		132,500
Wal-Mart Stores, Inc.		2,550		121,202
				1,068,283
Semiconductors — 3.9%
Analog Devices, Inc.		3,050		96,685
ASML Holding NV(b)		350		10,952
Broadcom Corp. Cl. A(b)		1,450		37,903
Intel Corp.		6,250		166,625
Marvell Technology Group Ltd.(b)		9,150		127,917
Maxim Integrated Products, Inc.		2,900		76,792
Texas Instruments, Inc.		2,050		68,470
Xilinx, Inc.		5,700		124,659
				710,003
Software — 7.7%
Adobe Systems, Inc.(b)		2,100		89,733
Autodesk, Inc.(b)		2,400		119,424
Automatic Data Processing, Inc.		4,550		202,612
Electronic Arts, Inc.(b)		2,950		172,310
Fiserv, Inc.(b)		600		33,294
Intuit, Inc.(b)		2,300		72,703
MasterCard, Inc. Cl. A(a)		200		43,040
Microsoft Corp.		14,650		521,540
Oracle Corp.(b)		6,050		136,609
TomTom NV EUR(b)		143		10,758
				1,402,023

	Number of Shares		Market Value
Telecommunications — 9.3%
America Movil SAB de CV Sponsored ADR (Mexico)		4,350	$	267,047
American Tower Corp. Cl. A(b)		5,500		234,300
AT&T, Inc.		3,200		132,991
Cisco Systems, Inc.(b)		11,650		315,366
Corning, Inc.		4,800		115,152
Juniper Networks, Inc.(b)		8,050		267,260
MetroPCS Communications, Inc.(b)		1,400		27,230
Nokia Oyj Sponsored ADR (Finland)		5,700		218,823
Qualcomm, Inc.		2,850		112,148
				1,690,317
Toys, Games & Hobbies — 0.3%
Nintendo Co., Ltd. JPY		100		60,547
Transportation — 0.2%
Expeditors International of Washington, Inc.		1,000		44,680
TOTAL EQUITIES (Cost $17,530,329)				18,159,874
RIGHTS -— 0.0%
Computers Seagate Technology(b) (c)		11,100		0
TOTAL RIGHTS (Cost $0)				0
TOTAL LONG TERM INVESTMENTS (Cost $17,530,329)				18,159,874
	Principal Amount
SHORT-TERM INVESTMENTS — 5.1%
Cash Equivalents — 4.4%(e)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	19,057		19,057
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		19,057		19,057
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		11,434		11,434
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		15,255		15,255

	Principal Amount		Market Value
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008	$	15,246	$	15,246
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		9,529		9,529
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		9,529		9,529
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		26,680		26,680
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		15,246		15,246
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		11,434		11,434
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		9,529		9,529
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		11,434		11,434
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		11,434		11,434
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		11,434		11,434
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		11,434		11,434
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		15,246		15,246
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		19,057		19,057
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		80,994		80,994
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		15,246		15,246
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		11,434		11,434
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		9,529		9,529
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		17,152		17,152

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Growth Equity Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008	$	5,717	$	5,717
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		19,057		19,057
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		19,057		19,057
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		19,057		19,057
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		11,434		11,434
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		11,434		11,434
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		13,340		13,340
Reserve Primary Money Market Fund(d)		45,290		45,290
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		19,057		19,057
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		9,529		9,529
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		9,529		9,529
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		15,246		15,246
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		13,340		13,340
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		13,340		13,340
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		112,218		112,218
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		19,057		19,057
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		7,623		7,623

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008	$	19,057	$	19,057
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		19,057		19,057
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		9,529		9,529
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		13,340		13,340
				800,698
Repurchase Agreements — 0.7%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(f)		121,152		121,152
TOTAL SHORT-TERM INVESTMENTS (Cost $921,850)				921,850
TOTAL INVESTMENTS — 104.6% (Cost $18,452,179)(g)				19,081,724
Other Assets/ (Liabilities) — (4.6%)				(834,378	)
NET ASSETS — 100.0%			$	18,247,346

Notes to Portfolio of Investments

ADR - American Depository Receipt

CHF - Swiss Franc

EUR - Euro

JPY - Japanese Yen

(a) Denotes all or a portion of security on loan. (Note 2).

(b) Non-income producing security.

(d) Principal amount represents shares owned of the fund.

(e) Represents investments of security lending collateral. (Note 2).

(f) Maturity value of $121,169. Collateralized by a U.S. Government Agency obligation with a rate of 4.211%, maturity date of 5/01/2035, and an aggregate market value, including accrued interest, of $125,043.

(g) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML NASDAQ-100 Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 97.7%
COMMON STOCK — 97.7%
Advertising — 0.5%
Focus Media Holding Ltd. ADR (China)(a)		609	$	34,597
Lamar Advertising Co. Cl. A		444		21,343
				55,940
Airlines — 0.5%
Ryanair Holdings PLC Sponsored ADR (Ireland)(a)		655		25,833
UAL Corp.(a)		638		22,751
				48,584
Auto Manufacturers — 1.3%
Paccar, Inc.		2,373		129,281
Beverages — 0.2%
Hansen Natural Corp.(a)		522		23,119
Biotechnology — 4.9%
Amgen, Inc.(a)		2,943		136,673
Biogen Idec, Inc.(a)		1,817		103,424
Celgene Corp.(a)		2,189		101,154
Genzyme Corp.(a)		1,935		144,041
Vertex Pharmaceuticals, Inc.(a)		790		18,352
				503,644
Chemicals — 0.4%
Sigma-Aldrich Corp.		709		38,711
Commercial Services — 1.2%
Apollo Group, Inc. Cl. A(a)		986		69,168
Fastenal Co.		797		32,215
Monster Worldwide, Inc.(a)		763		24,721
				126,104
Computers — 20.4%
Apple, Inc.(a)		7,022		1,390,918
Cadence Design Systems, Inc.(a)		1,598		27,182
Cognizant Technology Solutions Corp. Cl. A(a)		1,605		54,474
Dell, Inc.(a)		4,784		117,256
Logitech International SA(a)		990		36,274
Network Appliance, Inc.(a)		2,106		52,566
Research In Motion Ltd.(a)		3,216		364,694
SanDisk Corp.(a)		1,191		39,505
Sun Microsystems, Inc.(a)		2,048		37,130
				2,119,999

	Number of Shares		Market Value
Electronics — 1.7%
Flextronics International Ltd.(a)		5,136	$	61,940
Garmin Ltd.		1,165		113,005
				174,945
Engineering & Construction — 0.7%
Foster Wheeler Ltd.(a)		432		66,969
Environmental Controls — 0.3%
Stericycle, Inc.(a)		526		31,244
Foods — 0.3%
Whole Foods Market, Inc.		789		32,191
Health Care – Products — 2.1%
Dentsply International, Inc.		806		36,286
Henry Schein, Inc.(a)		488		29,963
Hologic, Inc.(a)		766		52,578
Intuitive Surgical, Inc.(a)		221		71,715
Patterson Cos., Inc.(a)		800		27,160
				217,702
Internet — 13.5%
Akamai Technologies, Inc.(a)		916		31,694
Amazon.com, Inc.(a)		1,594		147,668
Baidu.com ADR (China)(a)		138		53,874
Check Point Software Technologies Ltd.(a)		1,224		26,879
eBay, Inc.(a)		5,811		192,867
Expedia, Inc.(a)		1,624		51,351
Google, Inc. Cl. A(a)		823		569,088
IAC/InterActiveCorp(a)		1,675		45,091
Liberty Media Holding Corp. Interactive Cl. A(a)		3,248		61,972
Symantec Corp.(a)		5,193		83,815
VeriSign, Inc.(a)		1,218		45,809
Yahoo!, Inc.(a)		3,665		85,248
				1,395,356
Iron & Steel — 0.3%
Steel Dynamics, Inc.		584		34,789
Lodging — 0.8%
Wynn Resorts Ltd.		719		80,621
Machinery – Construction & Mining — 0.4%
Joy Global, Inc.		614		40,414
Media — 2.9%
Comcast Corp. Cl. A(a)		8,371		152,854

	Number of Shares		Market Value
Discovery Holding Co. Cl. A(a)		1,403	$	35,271
EchoStar Communications Corp. Cl. A(a)		1,222		46,094
Liberty Global, Inc. Cl. A(a)		1,110		43,501
Sirius Satellite Radio, Inc.(a)		9,066		27,470
				305,901
Pharmaceuticals — 5.4%
Amylin Pharmaceuticals, Inc.(a)		757		28,009
Cephalon, Inc.(a)		360		25,834
Express Scripts, Inc.(a)		1,300		94,900
Gilead Sciences, Inc.(a)		5,279		242,887
Teva Pharmaceutical Sponsored ADR (Israel)		3,575		166,166
				557,796
Retail — 4.2%
Bed Bath & Beyond, Inc.(a)		2,100		61,719
Costco Wholesale Corp.		1,315		91,734
Petsmart, Inc.		725		17,059
Sears Holdings Corp.(a)		829		84,599
Staples, Inc.		2,708		62,474
Starbucks Corp.(a)		5,844		119,627
				437,212
Semiconductors — 8.5%
Altera Corp.		2,779		53,690
Applied Materials, Inc.		4,026		71,502
Broadcom Corp. Cl. A(a)		2,459		64,278
Intel Corp.		11,722		312,509
KLA-Tencor Corp.		1,284		61,837
Lam Research Corp.(a)		725		31,342
Linear Technology Corp.		1,740		55,384
Marvell Technology Group Ltd.(a)		3,313		46,316
Microchip Technology, Inc.		1,004		31,546
Nvidia Corp.(a)		3,120		106,142
Xilinx, Inc.		2,277		49,798
				884,344
Software — 15.7%
Activision, Inc.(a)		1,523		45,233
Adobe Systems, Inc.(a)		3,260		139,300
Autodesk, Inc.(a)		1,388		69,067
BEA Systems, Inc.(a)		2,111		33,312
Citrix Systems, Inc.(a)		1,294		49,185
Electronic Arts, Inc.(a)		1,806		105,488
Fiserv, Inc.(a)		1,184		65,700

(Continued)

The accompanying notes are an integral part of the financial statements.

MML NASDAQ-100 Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Infosys Technologies Ltd. Sponsored ADR (India)		661	$	29,983
Intuit, Inc.(a)		2,414		76,307
Microsoft Corp.		18,575		661,270
Oracle Corp.(a)		12,226		276,063
Paychex, Inc.		2,068		74,903
				1,625,811
Telecommunications — 10.2%
Cisco Systems, Inc.(a)		12,488		338,050
Juniper Networks, Inc.(a)		1,993		66,168
Leap Wireless International, Inc.(a)		401		18,703
Level 3 Communications, Inc.(a)		8,702		26,454
Millicom International Cellular SA(a)		564		66,518
NII Holdings, Inc. Cl. B(a)		962		46,484
Qualcomm, Inc.		11,363		447,134
Tellabs, Inc.(a)		1,504		9,836
Virgin Media, Inc.		2,013		34,503
				1,053,850
Textiles — 0.3%
Cintas Corp.		1,061		35,671
Transportation — 1.0%
C.H. Robinson Worldwide, Inc.		960		51,955
Expeditors International of Washington, Inc.		1,208		53,973
				105,928
TOTAL EQUITIES (Cost $7,427,806)				10,125,415
	Principal Amount
SHORT-TERM INVESTMENTS — 2.7%
Repurchase Agreements — 2.2%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(c)	$	234,435		234,435
U.S. Treasury Bills — 0.5%
U.S. Treasury Bill(b) 4.650% 01/17/2008		50,000		49,897
TOTAL SHORT-TERM INVESTMENTS (Cost $284,332)				284,332

	Market Value
TOTAL INVESTMENTS — 100.4% (Cost $7,712,138)(d)	$	10,409,747
Other Assets/ (Liabilities) — (0.4%)		(40,484	)
NET ASSETS — 100.0%	$	10,369,263

Notes to Portfolio of Investments

ADR - American Depository Receipt

(a) Non-income producing security.

(b) This security is held as collateral for open futures contracts. (Note 2).

(c) Maturity value of $234,468. Collateralized by a U.S. Government Agency obligation with a rate of 4.819%, maturity date of 10/01/2035, and an aggregate market value, including accrued interest, of $241,041.

(d) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Small Cap Growth Equity Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 91.9%
COMMON STOCK — 91.9%
Advertising — 0.4%
Focus Media Holding Ltd. ADR (China)(a) (b)		18,740	$	1,064,619
Aerospace & Defense — 1.3%
Teledyne Technologies, Inc.(a) (b)		30,490		1,626,032
Transdigm Group, Inc.(a)		15,600		704,652
Triumph Group, Inc.		8,040		662,094
				2,992,778
Airlines — 0.2%
Airtran Holdings, Inc.(a)		68,100		487,596
Apparel — 0.2%
Skechers U.S.A., Inc. Cl. A(a)		25,800		503,358
Automotive & Parts — 0.5%
Tenneco, Inc.(a)		30,900		805,563
TRW Automotive Holdings Corp.(a)		19,700		411,730
				1,217,293
Banks — 0.5%
First Community Bancorp(b)		11,400		470,136
UCBH Holdings, Inc.(b)		17,500		247,800
UMB Financial Corp.		15,200		583,072
				1,301,008
Beverages — 0.1%
Jones Soda Co.(a) (b)		27,200		202,368
Biotechnology — 2.3%
Arena Pharmaceuticals, Inc.(a) (b)		16,120		126,220
Charles River Laboratories International, Inc.(a)		20,870		1,373,246
Exelixis, Inc.(a)		33,300		287,379
Human Genome Sciences, Inc.(a) (b)		73,300		765,252
Incyte Corp.(a) (b)		47,100		473,355
Lifecell Corp.(a)		37,700		1,625,247
Millennium Pharmaceuticals, Inc.(a)		17,560		263,049
Regeneron Pharmaceuticals, Inc.(a)		24,600		594,090
				5,507,838

	Number of Shares		Market Value
Chemicals — 2.7%
Agrium, Inc.		9,010	$	650,612
Cytec Industries, Inc.		5,325		327,913
Ferro Corp.		39,800		825,054
FMC Corp.		6,730		367,121
Hercules, Inc.(b)		70,310		1,360,498
Minerals Technologies, Inc.(b)		10,700		716,365
Terra Industries, Inc.(a)		9,280		443,213
Zoltek Cos., Inc.(a) (b)		38,200		1,637,634
				6,328,410
Coal — 0.9%
Arch Coal, Inc.		15,500		696,415
Foundation Coal Holdings, Inc.		26,110		1,370,775
				2,067,190
Commercial Services — 7.5%
Aegean Marine Petroleum Network, Inc.		9,150		351,268
AerCap Holdings NV(a)		55,500		1,158,285
American Public Education, Inc.(a)		5,200		217,256
Bankrate, Inc.(a) (b)		39,400		1,894,746
Bowne & Co., Inc.		41,100		723,360
Capella Education Co.(a)		16,900		1,106,274
CoStar Group, Inc.(a) (b)		31,400		1,483,650
Dollar Financial Corp.(a)		21,990		674,873
FTI Consulting, Inc.(a)		13,070		805,635
Interactive Data Corp.		24,620		812,706
Iron Mountain, Inc.(a)		22,440		830,729
ITT Educational Services, Inc.(a) (b)		22,100		1,884,467
Live Nation, Inc.(a) (b)		32,520		472,190
Morningstar, Inc.(a)		1,100		85,525
Pharmaceutical Product Development, Inc.		20,410		823,952
Sotheby's		28,000		1,066,800
Stewart Enterprises, Inc. Cl. A		98,700		878,430
VistaPrint Ltd.(a) (b)		58,130		2,490,870
				17,761,016
Computers — 4.8%
Electronics for Imaging, Inc.(a)		34,600		777,808
FactSet Research Systems, Inc.		63,572		3,540,960
IHS, Inc. Cl. A(a) (b)		12,200		738,832
Mentor Graphics Corp.(a)		44,500		479,710
MICROS Systems, Inc.(a)		49,850		3,497,476

	Number of Shares		Market Value
Riverbed Technology, Inc.(a)		53,000	$	1,417,220
Smart Modular Technologies(a)		108,100		1,100,458
				11,552,464
Cosmetics & Personal Care — 0.8%
Bare Escentuals, Inc.(a) (b)		81,300		1,971,525
Distribution & Wholesale — 2.3%
Ingram Micro, Inc. Cl. A(a)		61,700		1,113,068
LKQ Corp.(a)		202,768		4,262,183
				5,375,251
Diversified Financial — 1.9%
Aberdeen Asset Management PLC GBP		96,538		324,386
Advanta Corp. Cl. B		55,800		450,306
Financial Federal Corp.(b)		71,387		1,591,216
GLG Partners, Inc.(a) (b)		26,930		366,248
JMP Group, Inc.		64,400		546,112
MF Global Ltd.(a)		20,630		649,226
The Nasdaq Stock Market, Inc.(a)		10,400		514,696
				4,442,190
Electric — 0.3%
El Paso Electric Co.(a)		27,300		698,061
Electronics — 0.6%
Benchmark Electronics, Inc.(a) (b)		29,550		523,921
Faro Technologies, Inc.(a)		7,550		205,209
FLIR Systems, Inc.(a)		22,860		715,518
				1,444,648
Energy – Alternate Sources — 1.3%
C. Rokas SA Cl. C EUR		17,435		484,661
Covanta Holding Corp.(a)		58,260		1,611,472
JA Solar Holdings Co. Ltd., Sponsored ADR (Cayman Islands)(a)		5,370		374,880
VeraSun Energy(a) (b)		42,000		641,760
				3,112,773
Engineering & Construction — 2.2%
Chicago Bridge & Iron Co.		87,650		5,297,566
Entertainment — 3.1%
Churchill Downs, Inc.		14,400		777,168
DreamWorks Animation SKG, Inc. Cl. A(a)		29,200		745,768

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Small Cap Growth Equity Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
National CineMedia, Inc.		40,500	$	1,021,005
Scientific Games Corp. Cl. A(a) (b)		74,030		2,461,497
Vail Resorts, Inc.(a)		42,400		2,281,544
				7,286,982
Environmental Controls — 0.9%
Mine Safety Appliances Co.		4,800		248,976
Stericycle, Inc.(a) (b)		11,020		654,588
Waste Connections, Inc.(a)		40,085		1,238,627
				2,142,191
Foods — 0.1%
Pilgrim's Pride Corp.		8,200		237,390
Gas — 0.3%
UGI Corp.		24,300		662,175
Hand & Machine Tools — 0.2%
Kennametal, Inc.		12,040		455,834
Health Care – Products — 2.2%
AngioDynamics, Inc.(a)		24,190		460,578
Hologic, Inc.(a) (b)		21,692		1,488,939
Kensey Nash Corp.(a)		23,000		688,160
Mindray Medical International Ltd., ADR (China)		9,050		388,879
Symmetry Medical, Inc.(a)		35,800		623,994
Visicu, Inc.(a)		91,900		1,090,853
Volcano Corp.(a)		47,070		588,846
				5,330,249
Health Care – Services — 3.7%
Community Health Systems, Inc.(a)		22,800		840,408
Health Management Associates, Inc. Cl. A		100,400		600,392
Healthsouth Corp.(a) (b)		20,800		436,800
Healthways, Inc.(a) (b)		67,600		3,950,544
Icon PLC Sponsored ADR (United Kingdom)(a)		15,567		962,975
LifePoint Hospitals, Inc.(a) (b)		20,900		621,566
Magellan Health Services, Inc.(a)		15,600		727,428
Matria Healthcare, Inc.(a) (b)		27,400		651,298
				8,791,411
Holding Company – Diversified — 0.2%
Liberty Acquisition Holdings Corp.(a)		46,780		509,902
Home Furnishing — 0.9%
DTS, Inc.(a) (b)		44,350		1,134,030
TiVo, Inc.(a)		112,400		937,416
				2,071,446

	Number of Shares		Market Value
Household Products — 0.4%
Church & Dwight Co., Inc.(b)		9,670	$	522,857
Fossil, Inc.(a)		10,870		456,323
				979,180
Insurance — 2.5%
Allied World Assurance Holdings Ltd.		17,370		871,453
Aspen Insurance Holdings Ltd.		25,900		746,956
Employers Holdings, Inc.		34,700		579,837
FPIC Insurance Group, Inc.(a)		10,300		442,694
Platinum Underwriters Holdings Ltd.		20,500		728,980
ProAssurance Corp.(a) (b)		31,500		1,729,980
Reinsurance Group of America, Inc.		14,500		760,960
				5,860,860
Internet — 6.8%
Art Technology Group, Inc.(a)		35,800		154,656
Blue Nile, Inc.(a) (b)		18,600		1,265,916
Constant Contact, Inc.(a) (b)		41,900		900,850
Ctrip.com International Ltd. ADR (China)		8,210		471,829
DealerTrack Holdings, Inc.(a)		39,650		1,327,086
Digital River, Inc.(a)		4,160		137,571
Equinix, Inc.(a) (b)		12,490		1,262,364
Harris Interactive, Inc.(a)		54,100		230,466
LoopNet, Inc.(a) (b)		104,850		1,473,143
Orbitz Worldwide, Inc.(a)		44,320		376,720
Priceline.com, Inc.(a) (b)		3,440		395,118
S1 Corp.(a)		82,600		602,980
Sapient Corp.(a)		88,600		780,566
Shutterfly, Inc.(a) (b)		55,200		1,414,224
Sina Corp.(a)		60,350		2,674,109
The TriZetto Group, Inc.(a) (b)		61,840		1,074,161
Vocus, Inc.(a)		49,200		1,698,876
				16,240,635
Investment Companies — 0.2%
Babcock & Brown Wind Partners AUD		323,977		482,051
Iron & Steel — 0.4%
Cleveland-Cliffs, Inc.(b)		5,000		504,000
Steel Dynamics, Inc.		9,685		576,935
				1,080,935

	Number of Shares		Market Value
Lodging — 1.4%
Gaylord Entertainment Co.(a)		81,200	$	3,286,164
Machinery – Construction & Mining — 2.8%
Bucyrus International, Inc. Cl. A(b)		60,300		5,993,217
Outotec OYJ EUR		11,130		606,924
				6,600,141
Machinery – Diversified — 0.7%
Chart Industries, Inc.(a)		14,670		453,303
Flowserve Corp.		13,510		1,299,662
				1,752,965
Manufacturing — 0.5%
Hansen Transmissions International NV GBP(a)		60,422		349,113
Hexcel Corp.(a)		30,600		742,968
				1,092,081
Media — 0.5%
Dolan Media Co.(a)		12,800		373,376
LodgeNet Entertainment Corp.(a) (b)		20,800		362,752
NET Servicos de Comunicacao SA, ADR (Brazil)(b)		29,940		358,681
				1,094,809
Mining — 0.6%
Century Aluminum Co.(a)		12,300		663,462
Timminco Ltd. CAD(a)		9,890		220,817
Uranium One, Inc. CAD(a)		60,970		547,620
				1,431,899
Oil & Gas — 4.6%
Bill Barrett Corp.(a) (b)		91,450		3,829,012
Cabot Oil & Gas Corp.		17,510		706,879
Comstock Resources, Inc.(a)		22,600		768,400
Denbury Resources, Inc.(a)		34,320		1,021,020
Forest Oil Corp.(a)		12,820		651,769
Newfield Exploration Co.(a)		38,400		2,023,680
Rosetta Resources, Inc.(a)		32,300		640,509
Warren Resources, Inc.(a)		32,760		462,899
Whiting Petroleum Corp.(a)		14,900		859,134
				10,963,302
Oil & Gas Services — 0.3%
Complete Production Services, Inc.(a)		23,970		430,741
Core Laboratories NV(a)		2,900		361,688
				792,429

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Small Cap Growth Equity Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Packaging & Containers — 0.7%
Greif, Inc. Cl. A		8,680	$	567,412
Owens-Illinois, Inc.(a) (b)		16,050		794,475
Rexam PLC GBP		51,220		427,115
				1,789,002
Pharmaceuticals — 3.6%
Adams Respiratory Therapeutics, Inc.(a) (b)		82,250		4,913,615
Alkermes, Inc.(a) (b)		56,080		874,287
Amylin Pharmaceuticals, Inc.(a) (b)		28,780		1,064,860
The Medicines Co.(a)		28,270		541,653
Perrigo Co.		20,800		728,208
Warner Chilcott Ltd. Cl. A(a)		19,660		348,572
				8,471,195
Real Estate Investment Trusts (REITS) — 0.3%
American Campus Communities REIT		25,500		684,675
Retail — 4.5%
BJ's Wholesale Club, Inc.(a)		16,630		562,593
Chipotle Mexican Grill, Inc. Cl. A(a) (b)		5,500		808,885
Denny's Corp.(a)		149,200		559,500
Dick's Sporting Goods, Inc.(a)		24,030		667,073
Dollar Tree Stores, Inc.(a)		4,970		128,822
Gamestop Corp. Cl. A(a)		7,960		494,396
Nu Skin Enterprises, Inc. Cl. A		46,300		760,709
O'Reilly Automotive, Inc.(a)		74,090		2,402,739
P.F. Chang's China Bistro, Inc.(a) (b)		12,100		276,364
Papa John's International, Inc.(a)		25,500		578,850
Penske Auto Group, Inc.(b)		41,200		719,352
Red Robin Gourmet Burgers, Inc.(a)		25,910		828,861
Under Armour, Inc. Cl. A(a) (b)		1,870		81,663
Urban Outfitters, Inc.(a) (b)		29,000		790,540
Zumiez, Inc.(a) (b)		45,300		1,103,508
				10,763,855
Semiconductors — 2.3%
Advanced Analogic Technologies, Inc.(a)		49,840		562,195
Applied Micro Circuits Corp.(a)		71,475		624,692
Cypress Semiconductor Corp.(a)		28,300		1,019,649
Emulex Corp.(a)		21,860		356,755

	Number of Shares		Market Value
Fairchild Semiconductor International, Inc.(a)		46,900	$	676,767
O2Micro International Ltd. ADR (Cayman Islands)(a)		28,300		326,582
ON Semiconductor Corp.(a) (b)		79,200		703,296
Semtech Corp.(a)		20,040		311,021
Spansion LLC Cl. A(a) (b)		53,800		211,434
Verigy Ltd.(a)		23,400		635,778
				5,428,169
Software — 11.2%
Activision, Inc.(a)		24,620		731,214
Allscripts Healthcare Solutions, Inc.(a) (b)		143,300		2,782,886
Ansys, Inc.(a)		19,870		823,810
Blackbaud, Inc.		147,350		4,131,694
Blackboard, Inc.(a)		97,600		3,928,400
BladeLogic, Inc.(a)		37,600		1,111,832
Cerner Corp.(a) (b)		59,800		3,372,720
Commvault Systems, Inc.(a)		81,430		1,724,687
Concur Technologies, Inc.(a)		55,600		2,013,276
Eclipsys Corp.(a)		30,500		771,955
EPIQ Systems, Inc.(a) (b)		55,359		963,800
Nuance Communications, Inc.(a) (b)		12,100		226,028
Omnicell, Inc.(a)		50,800		1,368,044
Red Hat, Inc.(a) (b)		59,700		1,244,148
THQ, Inc.(a)		30,085		848,096
UBISOFT Entertainment EUR(a)		6,530		662,511
				26,705,101
Telecommunications — 1.2%
ADC Telecommunications, Inc.(a)		27,000		419,850
Cellcom Israel Ltd.		18,490		587,242
Centennial Communications Corp.(a)		8,800		81,752
Comverse Technology, Inc.(a)		25,600		441,600
Foundry Networks, Inc.(a)		16,600		290,832
General Communication, Inc. Cl. A(a)		45,000		393,750
Powerwave Technologies, Inc.(a) (b)		116,400		469,092
Sonus Networks, Inc.(a) (b)		50,400		293,832
				2,977,950
Toys, Games & Hobbies — 0.2%
Marvel Entertainment, Inc.(a) (b)		18,740		500,545

	Number of Shares		Market Value
Transportation — 3.3%
Con-way, Inc.		14,300	$	594,022
J.B. Hunt Transport Services, Inc.		114,350		3,150,343
Kansas City Southern(a) (b)		100,225		3,440,724
Teekay Tankers Ltd. Cl. A(a)		3,000		66,000
Werner Enterprises, Inc.(b)		39,900		679,497
				7,930,586
Trucking & Leasing — 0.2%
Aircastle Ltd.		22,140		582,946
Water — 0.3%
Companhia de Saneamento de Minas Gerais BRL		44,200		763,451
TOTAL EQUITIES (Cost $188,737,504)				219,070,458
MUTUAL FUND — 1.9%
Investment Companies — 1.9%
iShares Russell 2000 Growth Index Fund(b)		53,500		4,476,880
TOTAL MUTUAL FUND (Cost $4,239,573)				4,476,880
TOTAL LONG TERM INVESTMENTS (Cost $192,977,077)				223,547,338
	Principal Amount
SHORT-TERM INVESTMENTS — 32.3%
Cash Equivalents — 26.5%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	1,502,822		1,502,822
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		1,502,822		1,502,822
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		901,694		901,694
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		1,202,259		1,202,259
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		1,202,258		1,202,258

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Small Cap Growth Equity Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008	$	751,411	$	751,411
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		751,411		751,411
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		2,103,952		2,103,952
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		1,202,258		1,202,258
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		901,693		901,693
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		751,411		751,411
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		901,693		901,693
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		901,693		901,693
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		901,693		901,693
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		901,693		901,693
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		1,202,258		1,202,258
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		1,502,822		1,502,822
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		6,386,996		6,386,996
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		1,202,258		1,202,258
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		901,693		901,693
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		751,411		751,411
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		1,352,540		1,352,540
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		450,847		450,847

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008	$	1,502,823	$	1,502,823
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		1,502,822		1,502,822
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		1,502,822		1,502,822
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		901,693		901,693
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		901,693		901,693
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		1,051,976		1,051,976
Reserve Primary Money Market Fund(c)		3,571,460		3,571,460
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		1,502,823		1,502,823
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		751,411		751,411
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		751,412		751,412
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		1,202,259		1,202,259
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		1,051,977		1,051,977
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		1,051,976		1,051,976
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		8,849,176		8,849,176
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		1,502,822		1,502,822
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		601,129		601,129

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008	$	1,502,823	$	1,502,823
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		1,502,823		1,502,823
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		751,412		751,412
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		1,051,977		1,051,977
				63,140,897
Repurchase Agreements — 5.8%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		13,756,656		13,756,656
TOTAL SHORT-TERM INVESTMENTS (Cost $76,897,553)				76,897,553
TOTAL INVESTMENTS — 126.1% (Cost $269,874,630)(f)				300,444,891
Other Assets/ (Liabilities) — (26.1%)				(62,259,582	)
NET ASSETS — 100.0%			$	238,185,309

Notes to Portfolio of Investments

ADR - American Depository Receipt

AUD - Australian Dollar

BRL - Brazilian Real

CAD - Canadian Dollar

EUR - Euro

GBP - British Pound

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $13,758,604. Collateralized by a U.S. Government Agency obligation with a rate of 5.215%, maturity date of 12/25/2035, and an aggregate market value, including accrued interest, of $14,033,637.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Emerging Growth Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 92.6%
COMMON STOCK — 92.6%
Aerospace & Defense — 1.3%
Triumph Group, Inc.		2,900	$	238,815
Apparel — 3.3%
Crocs, Inc.(a)		2,700		99,387
Deckers Outdoor Corp.(a)		3,400		527,204
				626,591
Banks — 0.6%
Signature Bank(a)		2,300		77,625
Sterling Financial Corp.		1,900		31,901
				109,526
Biotechnology — 4.4%
Abraxis Bioscience, Inc.(a)		700		48,139
Celera Genomics Group - Applera Corp.(a)		2,200		34,914
Cougar Biotechnology, Inc. PIPE (Acquired 12/14/2007, Cost $46,400)(a) (d) (e)		1,600		50,986
Illumina, Inc.(a)		5,000		296,300
Lifecell Corp.(a)		5,600		241,416
Martek Biosciences Corp.(a)		2,400		70,992
Regeneron Pharmaceuticals, Inc.(a)		3,600		86,940
				829,687
Chemicals — 2.3%
Terra Industries, Inc.(a)		9,200		439,392
Coal — 1.1%
Alpha Natural Resources, Inc.(a)		6,200		201,376
Commercial Services — 7.9%
The Advisory Board Co.(a)		1,900		121,961
AMN Healthcare Services, Inc.(a)		4,200		72,114
Capella Education Co.(a)		4,800		314,208
DeVry, Inc.		3,300		171,468
Emergency Medical Services Corp. Cl. A(a)		2,700		79,056
FTI Consulting, Inc.(a)		6,700		412,988
New Oriental Education & Technology Group, Inc. Sponsored ADR (China)(a)		2,700		217,593
PharmaNet Development Group, Inc.(a)		2,800		109,788
				1,499,176

	Number of Shares		Market Value
Computers — 6.4%
BluePhoenix Solutions Ltd.(a)		8,700	$	157,644
Data Domain, Inc.(a)		4,400		115,896
MICROS Systems, Inc.(a)		2,450		171,892
Sigma Designs, Inc.(a)		5,800		320,160
Synaptics, Inc.(a)		10,900		448,644
				1,214,236
Distribution & Wholesale — 1.9%
LKQ Corp.(a)		17,300		363,646
Diversified Financial — 1.6%
GFI Group, Inc.(a)		2,400		229,728
Portfolio Recovery Associates, Inc.		2,000		79,340
				309,068
Electronics — 0.9%
Plexus Corp.(a)		6,300		165,438
Energy – Alternate Sources — 1.6%
Solarfun Power Holdings Co., Ltd., Sponsored ADR (China)(a)		9,500		310,175
Engineering & Construction — 1.0%
Aecom Technology Corp.(a)		3,400		97,138
Dycom Industries, Inc.(a)		3,200		85,279
				182,417
Entertainment — 1.3%
Bally Technologies, Inc.(a)		4,775		237,413
Environmental Controls — 1.0%
Clean Harbors, Inc.(a)		2,300		118,910
TETRA Technologies, Inc.(a)		3,300		70,950
				189,860
Foods — 1.8%
Cal-Maine Foods, Inc.		13,200		350,196
Hand & Machine Tools — 0.7%
Lincoln Electric Holdings, Inc.		1,800		128,124
Health Care – Products — 4.1%
Align Technology, Inc.(a)		5,200		86,736
Conceptus, Inc.(a)		2,600		50,024
Immucor, Inc.(a)		2,300		78,177
Inverness Medical Innovations, Inc.(a)		3,000		168,540

	Number of Shares		Market Value
Mindray Medical International Ltd., ADR (China)		5,400	$	232,038
Wright Medical Group, Inc.(a)		5,400		157,518
				773,033
Health Care – Services — 2.3%
Amedisys, Inc.(a)		5,300		257,156
Icon PLC Sponsored ADR (United Kingdom)(a)		3,000		185,580
				442,736
Household Products — 0.9%
Fossil, Inc.(a)		4,200		176,316
Insurance — 1.7%
Amerisafe, Inc.(a)		2,344		36,356
Castlepoint Holdings Ltd.		7,100		85,200
Delphi Financial Group, Inc. Cl. A		2,900		102,312
Meadowbrook Insurance Group, Inc.(a)		3,200		30,112
United Fire & Casualty Co.		2,200		63,998
				317,978
Internet — 8.9%
Art Technology Group, Inc.(a)		23,600		101,952
Blue Coat Systems, Inc.(a)		13,000		427,310
Ctrip.com International Ltd. ADR (China)		3,000		172,410
Priceline.com, Inc.(a)		5,100		585,786
Shutterfly, Inc.(a)		5,200		133,224
Sohu.com, Inc.(a)		3,800		207,176
The TriZetto Group, Inc.(a)		3,200		55,584
				1,683,442
Leisure Time — 1.2%
Life Time Fitness, Inc.(a)		2,200		109,296
WMS Industries, Inc.(a)		3,100		113,584
				222,880
Machinery – Diversified — 1.9%
Chart Industries, Inc.(a)	��	4,500		139,050
Flow International Corp.(a)		11,100		103,452
Lindsay Corp.		1,800		127,242
				369,744

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Emerging Growth Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Manufacturing — 1.0%
Ceradyne, Inc.(a)		2,000	$	93,860
Hexcel Corp.(a)		4,300		104,404
				198,264
Metal Fabricate & Hardware — 2.4%
Dynamic Materials Corp.		5,500		323,950
Haynes International, Inc.(a)		1,800		125,100
				449,050
Oil & Gas — 2.0%
Arena Resources Inc.(a)		8,900		371,219
Oil & Gas Services — 4.3%
Cal Dive International, Inc.(a)		6,700		88,708
CARBO Ceramics, Inc.		2,100		78,120
ION Geophysical Corp.(a)		7,000		110,460
T-3 Energy Services, Inc.(a)		4,000		188,040
W-H Energy Services, Inc.(a)		1,700		95,557
Willbros Group, Inc.(a)		6,400		245,056
				805,941
Pharmaceuticals — 9.5%
Acadia Pharmaceuticals, Inc.(a)		6,200		68,634
APP Pharmaceuticals, Inc.(a)		6,900		70,863
BioMarin Pharmaceuticals, Inc.(a)		10,000		354,000
Isis Pharmaceuticals, Inc.(a)		3,100		48,825
Medarex, Inc.(a)		9,700		101,074
Onyx Pharmaceuticals, Inc.(a)		4,000		222,480
Penwest Pharmaceuticals Co.(a)		15,700		91,845
Perrigo Co.		12,100		423,621
United Therapeutics Corp.(a)		4,300		419,895
				1,801,237
Retail — 3.6%
BJ's Restaurants, Inc.(a)		3,900		63,414
Chipotle Mexican Grill, Inc. Cl. A(a)		1,000		147,070
Einstein Noah Restaurant Group, Inc.(a)		1,100		19,965
First Cash Financial Services, Inc.(a)		5,800		85,144
The Gymboree Corp.(a)		2,200		67,012
Hibbett Sports, Inc.(a)		3,300		65,934
Lumber Liquidators, Inc.(a)		1,100		9,889

	Number of Shares		Market Value
Pacific Sunwear of California, Inc.(a)		2,900	$	40,919
Under Armour, Inc. Cl. A(a)		3,100		135,377
Zumiez, Inc.(a)		2,300		56,028
				690,752
Semiconductors — 2.9%
Advanced Analogic Technologies, Inc.(a)		10,400		117,312
Cavium Networks, Inc.(a)		3,500		80,570
Microsemi Corp.(a)		5,300		117,342
OmniVision Technologies, Inc.(a)		12,100		189,365
Varian Semiconductor Equipment Associates, Inc.(a)		1,050		38,850
				543,439
Software — 4.8%
Concur Technologies, Inc.(a)		3,300		119,493
Double-Take Software, Inc.(a)		2,900		62,988
Informatica Corp.(a)		4,300		77,486
Omniture, Inc.(a)		5,200		173,108
Synchronoss Technologies, Inc.(a)		9,300		329,592
Taleo Corp., Cl. A(a)		4,700		139,966
				902,633
Telecommunications — 0.8%
Atheros Communications, Inc.(a)		2,200		67,188
NTELOS Holdings Corp.		2,700		80,163
				147,351
Telephone Utilities — 1.2%
Brightpoint, Inc.(a)		14,800		227,328
TOTAL EQUITIES (Cost $16,064,342)				17,518,479
	Principal Amount
SHORT-TERM INVESTMENTS — 7.6%
Repurchase Agreements
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(b)	$	1,438,497		1,438,497

	Market Value
TOTAL SHORT-TERM INVESTMENTS (Cost $1,438,497)	$	1,438,497
TOTAL INVESTMENTS — 100.2% (Cost $17,502,839)(c)		18,956,976
Other Assets/ (Liabilities) — (0.2%)		(45,763	)
NET ASSETS — 100.0%	$	18,911,213

Notes to Portfolio of Investments

ADR - American Depository Receipt

PIPE - Private Investment in Public Equity

(a) Non-income producing security.

(b) Maturity value of $1,438,701. Collateralized by a U.S. Government Agency obligation with a rate of 4.819%, maturity date of 10/01/2035, and an aggregate market value, including accrued interest, of $1,469,953.

(d) Restricted security. (Note 2).

(e) This security is valued in good faith under procedures established by the Board of Trustees.

The accompanying notes are an integral part of the financial statements.

[This page is intentionally left blank.]

MML Series Investment Fund – Financial Statements

Statement of Assets and Liabilities

December 31, 2007

	MML Large Cap Value Fund			MML Equity Index Fund			MML Growth Equity Fund
Assets:
Investments, at value (Note 2)(a)	$	280,210,387		$	404,746,945		$	18,159,874
Short-term investments, at value (Note 2)(b)		21,215,574			16,412,825			921,850
Total investments(c)		301,425,961			421,159,770			19,081,724
Cash		2,765			3,533			448
Foreign currency, at value(d)		-			-			74
Receivables from:
Investments sold		7,426			203,778			3,158
Investment adviser (Note 3)		-			-			-
Fund shares sold		262,427			233,805			11,928
Interest and dividends		299,437			632,303			15,386
Foreign taxes withheld		4,293			-			18
Total assets		302,002,309			422,233,189			19,112,736
Liabilities:
Payables for:
Investments purchased		138,037			208,753			-
Fund shares repurchased		313,780			30,940			3,046
Variation margin on open futures contracts (Note 2)		-			23,167			-
Securities on loan (Note 2)		10,336,366			12,841,941			800,698
Trustees' fees and expenses (Note 3)		45,925			139,243			9,937
Affiliates (Note 3):
Investment management fees		187,823			35,004			20,465
Administration fees		-			46,374			-
Accrued expense and other liabilities		42,422			45,417			31,244
Total liabilities		11,064,353			13,370,839			865,390
Net assets	$	290,937,956		$	408,862,350		$	18,247,346
Net assets consist of:
Paid-in capital	$	243,046,171		$	318,786,436		$	39,894,355
Undistributed net investment income (loss) (distributions in excess of net investment income)		(45,912	)		(64,580	)		(9,936	)
Accumulated net realized gain (loss) on investments		13,775			(9,047,160	)		(22,266,618	)
Net unrealized appreciation (depreciation) on investments		47,923,922			99,187,654			629,545
Net assets	$	290,937,956		$	408,862,350		$	18,247,346
Shares outstanding		22,017,045			-			2,380,972
Net asset value, offering price and redemption price per share	$	13.21		$	-		$	7.66
Class I shares:
Net assets	$	-		$	88,057,815		$	-
Shares outstanding		-			4,876,555			-
Net asset value and redemption price per share	$	-		$	18.06		$	-
Class II shares:
Net assets	$	-		$	197,825,618		$	-
Shares outstanding		-			10,963,178			-
Net asset value, offering price and redemption price per share	$	-		$	18.04		$	-
Class III shares:
Net assets	$	-		$	122,978,917		$	-
Shares outstanding		-			6,827,306			-
Net asset value, offering price and redemption price per share	$	-		$	18.01		$	-
(a) Cost of investments - unaffiliated issuers:	$	232,286,858		$	305,571,613		$	17,530,329
(b) Cost of short-term investments:	$	21,215,574		$	16,412,825		$	921,850
(c) Securities on loan with market value of:	$	10,017,716		$	12,360,523		$	777,417
(d) Cost of foreign currency:	$	-		$	-		$	74

The accompanying notes are an integral part of the financial statements.

	MML NASDAQ-100 Fund			MML Small Cap Growth Equity Fund			MML Emerging Growth Fund
Assets:
Investments, at value (Note 2)(a)	$	10,125,415		$	223,547,338		$	17,518,479
Short-term investments, at value (Note 2)(b)		284,332			76,897,553			1,438,497
Total investments(c)		10,409,747			300,444,891			18,956,976
Cash		-			33,615			-
Foreign currency, at value(d)		-			-			-
Receivables from:
Investments sold		-			59,136			122,250
Investment adviser (Note 3)		6,808			-			5,224
Fund shares sold		25,641			2,312,035			56,205
Interest and dividends		4,375			132,377			1,973
Foreign taxes withheld		-			133			-
Total assets		10,446,571			302,982,187			19,142,628
Liabilities:
Payables for:
Investments purchased		-			1,309,404			176,789
Fund shares repurchased		34,732			56,504			873
Variation margin on open futures contracts (Note 2)		2,430			-			-
Securities on loan (Note 2)		-			63,140,897			-
Trustees' fees and expenses (Note 3)		4,906			36,784			6,123
Affiliates (Note 3):
Investment management fees		3,913			210,711			16,858
Administration fees		-			-			-
Accrued expense and other liabilities		31,327			42,578			30,772
Total liabilities		77,308			64,796,878			231,415
Net assets	$	10,369,263		$	238,185,309		$	18,911,213
Net assets consist of:
Paid-in capital	$	16,221,112		$	209,044,109		$	21,919,828
Undistributed net investment income (loss) (distributions in excess of net investment income)		(3,203	)		(35,397	)		(6,114	)
Accumulated net realized gain (loss) on investments		(8,552,672	)		(1,395,504	)		(4,456,638	)
Net unrealized appreciation (depreciation) on investments		2,704,026			30,572,101			1,454,137
Net assets	$	10,369,263		$	238,185,309		$	18,911,213
Shares outstanding		1,957,774			13,996,845			2,552,451
Net asset value, offering price and redemption price per share	$	5.30		$	17.02		$	7.41
Class I shares:
Net assets	$	-		$	-		$	-
Shares outstanding		-			-			-
Net asset value and redemption price per share	$	-		$	-		$	-
Class II shares:
Net assets	$	-		$	-		$	-
Shares outstanding		-			-			-
Net asset value, offering price and redemption price per share	$	-		$	-		$	-
Class III shares:
Net assets	$	-		$	-		$	-
Shares outstanding		-			-			-
Net asset value, offering price and redemption price per share	$	-		$	-		$	-
(a) Cost of investments - unaffiliated issuers:	$	7,427,806		$	192,977,077		$	16,064,342
(b) Cost of short-term investments:	$	284,332		$	76,897,553		$	1,438,497
(c) Securities on loan with market value of:	$	-		$	60,051,512		$	-
(d) Cost of foreign currency:	$	-		$	-		$	-

MML Series Investment Fund – Financial Statements (Continued)

Statement of Operations

For the Year Ended December 31, 2007

	MML Large Cap Value Fund		MML Equity Index Fund			MML Growth Equity Fund
Investment Income (Note 2):
Dividends(a)	$	4,468,461	$	7,992,450		$	242,917
Interest		328,332		182,312			17,296
Securities lending net income		33,019		37,504			2,792
Total investment income		4,829,812		8,212,266			263,005
Expenses (Note 3):
Investment management fees (Note 3)		1,935,800		415,168			155,571
Custody fees		43,993		44,279			19,983
Trustee reporting		1,907		1,837			1,907
Audit and legal fees		34,396		35,964			31,171
Proxy fees		970		627			970
Shareholder reporting fees		27,443		62,339			2,777
Trustees' fees (Note 3)		24,624		50,114			2,178
		2,069,133		610,328			214,557
Administration fees (Note 3):
Class I		-		267,063			-
Class II		-		377,981			-
Class III		-		63,609			-
Total expenses		2,069,133		1,318,981			214,557
Expenses waived (Note 3)		-		-			(37,596	)
Class II administration fees waived (Note 3)		-		(99,465	)		-
Class III administration fees waived (Note 3)		-		(63,609	)		-
Net expenses		2,069,133		1,155,907			176,961
Net investment income (loss)		2,760,679		7,056,359			86,044
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Investment transactions		4,560,621		6,779,028			1,179,170
Futures contracts		-		319,653			(12,643	)
Foreign currency transactions		6,588		-			(1,624	)
Net realized gain (loss)		4,567,209		7,098,681			1,164,903
Net change in unrealized appreciation (depreciation) on:
Investments		1,866,090		7,269,097			(399,298	)
Futures contracts		-		(5,004	)		-
Translation of assets and liabilities in foreign currencies		442		-			-
Net unrealized appreciation (depreciation)		1,866,532		7,264,093			(399,298	)
Net realized gain (loss) and change in unrealized appreciation (depreciation)		6,433,741		14,362,774			765,605
Net increase (decrease) in net assets resulting from operations	$	9,194,420	$	21,419,133		$	851,649
(a) Net of withholding tax of:	$	21,226	$	-		$	88

The accompanying notes are an integral part of the financial statements.

	MML NASDAQ-100 Fund			MML Small Cap Growth Equity Fund			MML Emerging Growth Fund
Investment Income (Note 2):
Dividends(a)	$	43,388		$	800,132		$	43,705
Interest		8,895			436,127			27,916
Securities lending net income		-			274,496			-
Total investment income		52,283			1,510,755			71,621
Expenses (Note 3):
Investment management fees (Note 3)		40,254			2,173,416			169,021
Custody fees		10,336			52,944			15,342
Trustee reporting		1,907			1,907			1,906
Audit and legal fees		32,977			34,303			31,343
Proxy fees		970			971			969
Shareholder reporting fees		1,212			21,876			11,430
Trustees' fees (Note 3)		951			19,843			1,731
		88,607			2,305,260			231,742
Administration fees (Note 3):
Class I		-			-			-
Class II		-			-			-
Class III		-			-			-
Total expenses		88,607			2,305,260			231,742
Expenses waived (Note 3)		(38,513	)		-			(45,019	)
Class II administration fees waived (Note 3)		-			-			-
Class III administration fees waived (Note 3)		-			-			-
Net expenses		50,094			2,305,260			186,723
Net investment income (loss)		2,189			(794,505	)		(115,102	)
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Investment transactions		269,698			9,362,995			2,348,796
Futures contracts		5,198			-			-
Foreign currency transactions		-			(22,966	)		-
Net realized gain (loss)		274,896			9,340,029			2,348,796
Net change in unrealized appreciation (depreciation) on:
Investments		1,173,373			8,018,527			(3,816	)
Futures contracts		12,679			-			-
Translation of assets and liabilities in foreign currencies		-			1,783			-
Net unrealized appreciation (depreciation)		1,186,052			8,020,310			(3,816	)
Net realized gain (loss) and change in unrealized appreciation (depreciation)		1,460,948			17,360,339			2,344,980
Net increase (decrease) in net assets resulting from operations	$	1,463,137		$	16,565,834		$	2,229,878
(a) Net of withholding tax of:	$	222		$	8,136		$	-

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML Large Cap Value Fund						MML Equity Index Fund
	Year Ended December 31, 2007			Year Ended December 31, 2006			Year Ended December 31, 2007			Year Ended December 31, 2006
Increase (Decrease) in Net Assets
Operations:
Net investment income (loss)	$	2,760,679		$	1,348,959		$	7,056,359		$	6,639,266
Net realized gain (loss) on investment transactions		4,567,209			1,447,881			7,098,681			2,516,681
Net change in unrealized appreciation (depreciation) on investments		1,866,532			21,474,866			7,264,093			46,919,252
Net increase (decrease) in net assets resulting from operations		9,194,420			24,271,706			21,419,133			56,075,199
Distributions to shareholders (Note 2):
From net investment income		(2,798,621	)		(1,346,138	)		-			-
Class I		-			-			(1,366,698	)		(1,256,660	)
Class II		-			-			(3,365,535	)		(3,050,128	)
Class III		-			-			(2,269,397	)		(2,219,155	)
Total distributions from net investment income		(2,798,621	)		(1,346,138	)		(7,001,630	)		(6,525,943	)
Net fund share transactions (Note 5)		67,721,437			60,138,687			-			-
Class I		-			-			(255,367	)		(576,207	)
Class II		-			-			1,345,988			(15,753,838	)
Class III		-			-			(9,170,458	)		(26,391,577	)
Increase (decrease) in net assets from fund share transactions		67,721,437			60,138,687			(8,079,837	)		(42,721,622	)
Total increase (decrease) in net assets		74,117,236			83,064,255			6,337,666			6,827,634
Net assets:
Beginning of year		216,820,720			133,756,465			402,524,684			395,697,050
End of year	$	290,937,956		$	216,820,720		$	408,862,350		$	402,524,684
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	(45,912	)	$	(36,534	)	$	(64,580	)	$	(61,844	)

The accompanying notes are an integral part of the financial statements.

	MML Growth Equity Fund
	Year Ended December 31, 2007			Year Ended December 31, 2006
Increase (Decrease) in Net Assets
Operations:
Net investment income (loss)	$	86,044		$	111,084
Net realized gain (loss) on investment transactions		1,164,903			719,178
Net change in unrealized appreciation (depreciation) on investments		(399,298	)		(466,608	)
Net increase (decrease) in net assets resulting from operations		851,649			363,654
Distributions to shareholders (Note 2):
From net investment income		(95,117	)		(92,922	)
Class I		-			-
Class II		-			-
Class III		-			-
Total distributions from net investment income		(95,117	)		(92,922	)
Net fund share transactions (Note 5)		(2,691,248	)		(1,330,493	)
Class I		-			-
Class II		-			-
Class III		-			-
Increase (decrease) in net assets from fund share transactions		(2,691,248	)		(1,330,493	)
Total increase (decrease) in net assets		(1,934,716	)		(1,059,761	)
Net assets:
Beginning of year		20,182,062			21,241,823
End of year	$	18,247,346		$	20,182,062
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	(9,936	)	$	(4,473	)

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML NASDAQ-100 Fund						MML Small Cap Growth Equity Fund
	Year ended December 31, 2007			Year ended December 31, 2006			Year ended December 31, 2007			Year ended December 31, 2006
Increase (Decrease) in Net Assets
Operations:
Net investment income (loss)	$	2,189		$	11,691		$	(794,505	)	$	(542,963	)
Net realized gain (loss) on investment transactions		274,896			476,920			9,340,029			9,376,831
Net change in unrealized appreciation (depreciation) on investments		1,186,052			87,757			8,020,310			3,069,879
Net increase (decrease) in net assets resulting from operations		1,463,137			576,368			16,565,834			11,903,747
Distributions to shareholders (Note 2):
From net investment income		(2,524	)		(4,218	)		(272,404	)		-
Total distributions from net investment income		(2,524	)		(4,218	)		(272,404	)		-
From net realized gains		-			-			(7,674,208	)		-
Total distributions from net realized gains		-			-			(7,674,208	)		-
Net fund share transactions (Note 5)		435,014			(1,594,989	)		59,625,409			53,028,893
Increase (decrease) in net assets from fund share transactions		435,014			(1,594,989	)		59,625,409			53,028,893
Total increase (decrease) in net assets		1,895,627			(1,022,839	)		68,244,631			64,932,640
Net assets:
Beginning of year		8,473,636			9,496,475			169,940,678			105,008,038
End of year	$	10,369,263		$	8,473,636		$	238,185,309		$	169,940,678
Undistributed net investment income (loss) (distributions in excess of net investment income) included in net assets at the end of the year	$	(3,203	)	$	(2,651	)	$	(35,397	)	$	(28,288	)

The accompanying notes are an integral part of the financial statements.

	MML Emerging Growth Fund
	Year ended December 31, 2007			Year ended December 31, 2006
Increase (Decrease) in Net Assets
Operations:
Net investment income (loss)	$	(115,102	)	$	(117,720	)
Net realized gain (loss) on investment transactions		2,348,796			725,780
Net change in unrealized appreciation (depreciation) on investments		(3,816	)		123,732
Net increase (decrease) in net assets resulting from operations		2,229,878			731,792
Distributions to shareholders (Note 2):
From net investment income		-			-
Total distributions from net investment income		-			-
From net realized gains		-			-
Total distributions from net realized gains		-			-
Net fund share transactions (Note 5)		1,978,597			163,999
Increase (decrease) in net assets from fund share transactions		1,978,597			163,999
Total increase (decrease) in net assets		4,208,475			895,791
Net assets:
Beginning of year		14,702,738			13,806,947
End of year	$	18,911,213		$	14,702,738
Undistributed net investment income (loss) (distributions in excess of net investment income) included in net assets at the end of the year	$	(6,114	)	$	(2,583	)

MML Series Investment Fund – Financial Highlights
(For a share outstanding throughout each period)

MML Large Cap Value Fund

	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05††			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	12.80		$	11.27		$	10.38		$	9.35		$	7.26
Income (loss) from investment operations:
Net investment income (loss)		0.15	***		0.09	***		0.09	***		0.06			0.06
Net realized and unrealized gain (loss) on investments		0.39			1.52			0.87			1.04			2.09
Total income from investment operations		0.54			1.61			0.96			1.10			2.15
Less distributions to shareholders:
From net investment income		(0.13	)		(0.08	)		(0.07	)		(0.07	)		(0.06	)
Tax return of capital		-			-			(0.00	)†		-			-
Total distributions		(0.13	)		(0.08	)		(0.07	)		(0.07	)		(0.06	)
Net asset value, end of year	$	13.21		$	12.80		$	11.27		$	10.38		$	9.35
Total Return(a)		4.22	%		14.18	%		9.38	%		11.79	%		29.60	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	290,938		$	216,821		$	133,756		$	82,898		$	57,275
Ratio of expenses to average daily net assets:
Before expense waiver		0.82	%		0.85	%		0.89	%		0.87	%		0.92	%
After expense waiver		N/A			N/A			N/A			0.87	% (b)#		0.90	% (b)#
Net investment income (loss) to average daily net assets		1.10	%		0.80	%		0.81	%		0.78	%		0.79	%
Portfolio turnover rate		7	%		10	%		3	%		3	%		7	%

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

†† Effective January 1, 2005, rebated brokerage commissions are included with realized gain or loss on investment transactions. Prior to January 1, 2005, these amounts were presented as a reduction of expenses. Prior year amounts have not been restated to reflect this change due to immateriality.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

(a) Total return does not reflect expenses that apply at the separate account level or to related insurance products. Inclusion of these charges would reduce the total return figures for all periods shown.

(b) The Fund has entered into agreements with certain brokers to rebate a portion of brokerage commissions. The rebated commissions were used to reduce operating expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding throughout each period)

MML Equity Index Fund

	Class I
	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	17.45		$	15.36		$	14.90		$	13.71		$	10.83
Income (loss) from investment operations:
Net investment income (loss)		0.28	***		0.25	***		0.21	***		0.22	***		0.16	***
Net realized and unrealized gain (loss) on investments		0.61			2.10			0.47			1.21			2.88
Total income from investment operations		0.89			2.35			0.68			1.43			3.04
Less distributions to shareholders:
From net investment income		(0.28	)		(0.26	)		(0.22	)		(0.24	)		(0.16	)
Tax return of capital		-			-			(0.00	)†		-			-
Total distributions		(0.28	)		(0.26	)		(0.22	)		(0.24	)		(0.16	)
Net asset value, end of year	$	18.06		$	17.45		$	15.36		$	14.90		$	13.71
Total Return(a)		5.13	%		15.30	%		4.53	%		10.42	%		28.08	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	88,058		$	85,288		$	76,012		$	85,138		$	78,597
Ratio of expenses to average daily net assets:
Before expense waiver		0.45	%		0.46	%		0.48	%		0.44	%		0.44	%
After expense waiver		N/A			0.45	% #		0.45	% #		N/A			N/A
Net investment income (loss) to average daily net assets		1.53	%		1.54	%		1.42	%		1.60	%		1.37	%
Portfolio turnover rate		6	%		4	%		4	%		4	%		5	%
	Class II
	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	17.44		$	15.34		$	14.89		$	13.70		$	10.82
Income (loss) from investment operations:
Net investment income (loss)		0.31	***		0.28	***		0.24	***		0.25	***		0.19	***
Net realized and unrealized gain (loss) on investments		0.60			2.10			0.45			1.20			2.87
Total income from investment operations		0.91			2.38			0.69			1.45			3.06
Less distributions to shareholders:
From net investment income		(0.31	)		(0.28	)		(0.24	)		(0.26	)		(0.18	)
Tax return of capital		-			-			(0.00	)†		-			-
Total distributions		(0.31	)		(0.28	)		(0.24	)		(0.26	)		(0.18	)
Net asset value, end of year	$	18.04		$	17.44		$	15.34		$	14.89		$	13.70
Total Return(a)		5.24	%		15.54	%		4.65	%		10.60	%		28.31	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	197,826		$	189,688		$	182,390		$	184,271		$	188,869
Ratio of expenses to average daily net assets:
Before expense waiver		0.34	%		0.35	%		0.37	%		0.33	%		0.33	%
After expense waiver		0.29	% #		0.29	% #		0.29	% #		0.27	% #		0.25	% #
Net investment income (loss) to average daily net assets		1.69	%		1.70	%		1.59	%		1.75	%		1.56	%
Portfolio turnover rate		6	%		4	%		4	%		4	%		5	%

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding throughout each period)

MML Equity Index Fund

	Class III
	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	17.41		$	15.31		$	14.86		$	13.67		$	10.80
Income (loss) from investment operations:
Net investment income (loss)		0.33	***		0.30	***		0.26	***		0.26	***		0.20	***
Net realized and unrealized gain (loss) on investments		0.61			2.11			0.46			1.21			2.86
Total income from investment operations		0.94			2.41			0.72			1.47			3.06
Less distributions to shareholders:
From net investment income		(0.34	)		(0.31	)		(0.27	)		(0.28	)		(0.19	)
Tax return of capital		-			-			(0.00	)†		-			-
Total distributions		(0.34	)		(0.31	)		(0.27	)		(0.28	)		(0.19	)
Net asset value, end of year	$	18.01		$	17.41		$	15.31		$	14.86		$	13.67
Total Return(a)		5.40	%		15.72	%		4.80	%		10.77	%		28.38	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	122,979		$	127,549		$	137,295		$	136,927		$	137,646
Ratio of expenses to average daily net assets:
Before expense waiver		0.20	%		0.21	%		0.23	%		0.19	%		0.19	%
After expense waiver		0.15	% #		0.15	% #		0.15	% #		0.14	% #		0.14	% #
Net investment income (loss) to average daily net assets		1.83	%		1.83	%		1.72	%		1.88	%		1.67	%
Portfolio turnover rate		6	%		4	%		4	%		4	%		5	%

MML Growth Equity Fund

	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05††			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	7.38		$	7.27		$	7.03		$	6.74		$	5.48
Income (loss) from investment operations:
Net investment income (loss)		0.03	***		0.04	***		0.03			0.03			0.00	†
Net realized and unrealized gain (loss) on investments		0.29			0.10			0.24			0.29			1.26
Total income from investment operations		0.32			0.14			0.27			0.32			1.26
Less distributions to shareholders:
From net investment income		(0.04	)		(0.03	)		(0.03	)		(0.03	)		(0.00	)†
Net asset value, end of year	$	7.66		$	7.38		$	7.27		$	7.03		$	6.74
Total Return(a)		4.34	%		1.98	%		3.86	%		4.78	%		23.02	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	18,247		$	20,182		$	21,242		$	22,894		$	21,460
Ratio of expenses to average daily net assets:
Before expense waiver		1.10	%		1.15	%		1.05	%		1.00	%		1.28	%
After expense waiver		0.91	% #		0.91	% #		0.91	% #		0.89	% (b)#		0.86	% (b)#
Net investment income (loss) to average daily net assets		0.44	%		0.56	%		0.40	%		0.47	%		0.02	%
Portfolio turnover rate		146	%		104	%		85	%		184	%		271	%

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

(b) The Fund has entered into agreements with certain brokers to rebate a portion of brokerage commissions. The rebated commissions were used to reduce operating expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding throughout each period)

MML NASDAQ-100 Fund

	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	4.46		$	4.18		$	4.13		$	3.76		$	2.53
Income (loss) from investment operations:
Net investment income (loss)		0.00	***†		0.01	***		0.00	***†		0.02			(0.01	)
Net realized and unrealized gain (loss) on investments		0.84			0.27			0.05			0.37			1.24
Total income (loss) from investment operations		0.84			0.28			0.05			0.39			1.23
Less distributions to shareholders:
From net investment income		(0.00	)†		(0.00	)†		(0.00	)†		(0.02	)		-
Net asset value, end of year	$	5.30		$	4.46		$	4.18		$	4.13		$	3.76
Total Return(a)		18.86	%		6.75	%		1.26	%		10.48	%		48.62	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	10,369		$	8,474		$	9,496		$	12,223		$	12,274
Ratio of expenses to average daily net assets:
Before expense waiver		0.99	%		1.08	%		0.86	%		0.77	%		1.22	%
After expense waiver		0.56	% #		0.56	% #		0.56	% #		0.56	% #		0.56	% #
Net investment income (loss) to average daily net assets		0.02	%		0.13	%		0.03	%		0.63	%		(0.31	)%
Portfolio turnover rate		17	%		9	%		23	%		35	%		48	%

MML Small Cap Growth Equity Fund

	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05††			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	16.07		$	14.73		$	13.21		$	11.66		$	7.85
Income (loss) from investment operations:
Net investment income (loss)		(0.07	)***		(0.06	)***		(0.05	)		(0.07	)		(0.07	)
Net realized and unrealized gain (loss) on investments		1.63			1.40			1.57			1.62			3.88
Total income from investment operations		1.56			1.34			1.52			1.55			3.81
Less distributions to shareholders:
From net investment income		(0.02	)		-			-			-			-
From net realized gains		(0.59	)		-			-			-			-
Total distributions		(0.61	)		-			-			-			-
Net asset value, end of year	$	17.02		$	16.07		$	14.73		$	13.21		$	11.66
Total Return(a)		9.66	%		9.10	%		11.58	%		13.29	%		48.54	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	238,185		$	169,941		$	105,008		$	62,009		$	47,687
Ratio of expenses to average daily net assets:
Before expense waiver		1.14	%		1.18	%		1.22	%		1.21	%		1.25	%
After expense waiver		N/A			N/A			1.18	% #		1.14	% (b)#		1.16	% (b)#
Net investment income (loss) to average daily net assets		(0.39	)%		(0.41	)%		(0.48	)%		(0.63	)%		(0.79	)%
Portfolio turnover rate		70	%		79	%		61	%		62	%		59	%

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

(b) The Fund has entered into agreements with certain brokers to rebate a portion of brokerage commissions. The rebated commissions were used to reduce operating expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding throughout each period)

MML Emerging Growth Fund

	Year ended 12/31/07			Year ended 12/31/06			Year ended 12/31/05			Year ended 12/31/04			Year ended 12/31/03
Net asset value, beginning of year	$	6.29		$	5.97		$	5.92		$	5.16		$	3.54
Income (loss) from investment operations:
Net investment income (loss)		(0.05	)***		(0.05	)***		(0.05	)		(0.05	)		(0.04	)
Net realized and unrealized gain (loss) on investments		1.17			0.37			0.10			0.81			1.66
Total income (loss) from investment operations		1.12			0.32			0.05			0.76			1.62
Net asset value, end of year	$	7.41		$	6.29		$	5.97		$	5.92		$	5.16
Total Return(a)		17.81	%		5.36	%		0.84	%		14.73	%		45.76	%
Ratios / Supplemental Data:
Net assets, end of year (000's)	$	18,911		$	14,703		$	13,807		$	14,136		$	10,064
Ratio of expenses to average daily net assets:
Before expense waiver		1.44	%		1.55	%		1.51	%		1.62	%		2.28	%
After expense waiver		1.16	% #		1.16	% #		1.16	% #		1.16	% #		1.16	% #
Net investment income (loss) to average daily net assets		(0.72	)%		(0.83	)%		(0.91	)%		(0.97	)%		(1.09	)%
Portfolio turnover rate		195	%		291	%		127	%		184	%		195	%

*** Per share amount calculated on the average shares method.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

Notes to Financial Statements

The MML Trust was established by Massachusetts Mutual Life Insurance Company ("MassMutual") for the purpose of providing vehicles for the investment of assets of various separate investment accounts established by MassMutual and by life insurance companies which are subsidiaries of MassMutual. Shares of MML Trust are not offered to the general public. MassMutual, MML Bay State Life Insurance Company and C.M. Life Insurance Company are the record owners of all outstanding shares of the Funds.

The Equity Index Fund offers three classes of shares: Class I, Class II and Class III. Each share class invests in the same portfolio of assets. The principal difference among the classes is the level of service and administration fees borne by the classes. Because each class will have different fees and expenses, performance and share prices among the classes will vary. The classes of shares are offered to different types of investors, as outlined in the Fund's Prospectus.

2. Significant Accounting Policies
The following is a summary of significant accounting policies followed consistently by each Fund in the preparation of the financial statements in conformity with accounting principles generally accepted in the United States of America ("generally accepted accounting principles"). The preparation of the financial statements in accordance with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates.

Investment Valuation
Equity securities are valued on the basis of valuations furnished by a pricing service, authorized by the Board of Trustees ("Trustees"), which provides the last reported sale price for securities listed on a national securities exchange or the official closing price on the NASDAQ National Market System, or in the case of over-the-counter securities not so listed, the last reported bid price. Debt securities (other than short-term obligations) are valued on the basis of valuations furnished by a pricing service, authorized by the Trustees, which determines valuations taking into account appropriate factors such as institutional-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, trading characteristics and other market data. Short-term securities are valued at either amortized cost or at original cost plus accrued interest, whichever approximates current market value. Shares of other funds are valued at their net asset value as reported on each business day. All other securities and other assets, including futures, options, swaps and debt securities for which the prices supplied by a pricing agent are deemed by the Trustees not to be representative of market values, including restricted securities and securities for which no market quotation is available, are valued at fair value in accordance with procedures approved by the Trustees. Securities are typically valued on the basis of valuations furnished by a primary pricing service or, if no such valuation is available, from a secondary pricing service. However, valuation methods approved by the Trustees which are intended to reflect fair value may be used when pricing service information is not readily available or when a security's value is believed to ha ve been materially affected by a significant event, such as a natural disaster, an economic event like a bankruptcy filing, or a substantial fluctuation in domestic or foreign markets, that has occurred after the close of the exchange or market on which the security is principally traded (for example, a foreign exchange or market). In such a case, a Fund's value for a security is likely to be different from the last quoted market price or pricing service information. Due to the subjective and variable nature of fair value pricing, it is possible that the value determined for a particular asset may be materially different from the value realized upon such asset's sale.

Notes to Financial Statements (Continued)

the principal market for such securities. All assets and liabilities expressed in foreign currencies are converted into U.S. dollars at the mean between the buying and selling rates of such currencies against U.S. dollars last quoted by any major bank. If such quotations are not available, the rate of exchange is determined in accordance with policies established by the Trustees.

Securities Lending
Each Fund may lend its securities to qualified brokers; however, securities lending cannot exceed 33% of the total assets of the Funds taken at current value. The loans are collateralized at all times with cash or securities with a market value at least equal to 100% of the market value of the securities on loan. The market value of the loaned securities is determined at the close of business of the Fund and any additional collateral is delivered to the Fund the next business day. As with other extensions of credit, the Funds may bear the risk of delay in recovery or even loss of rights in the collateral should the borrower of the securities fail financially. The Funds receive compensation for lending their securities. At December 31, 2007, the Funds l oaned securities having the following market values collateralized by cash, which was invested in short-term instruments in the following amounts:

	Securities on Loan		Collateral
Large Cap Value Fund	$	10,017,716	$	10,336,366
Equity Index Fund		12,360,523		12,841,941
Growth Equity Fund		777,417		800,698
Small Cap Growth Equity Fund		60,051,512		63,140,897
	$	83,207,168	$	87,119,902

For each Fund, the amount of securities on loan indicated in the table above may not correspond with the securities on loan identified on the Portfolio of Investments because securities with pending sales are in process of recall from the brokers.

The MML Trust receives, as fees, a share of the income earned on investment of the cash collateral received for the loan of securities. For year ended December 31, 2007 the MML Trust earned securities lending agent fees as follows:

	Securities Lending Gross Income		Securities Lending Fees and Expenses		Securities Lending Net Income
Large Cap Value Fund	$	813,318	$	780,299	$	33,019
Equity Index Fund		1,062,611		1,025,107		37,504
Growth Equity Fund		87,264		84,472		2,792
Small Cap Growth Equity Fund		3,436,152		3,161,656		274,496
	$	5,399,345	$	5,051,534	$	347,811

Repurchase Agreements
Each Fund may enter into repurchase agreements with certain banks and broker/dealers whereby a Fund acquires a security for cash and obtains a simultaneous commitment from the seller to repurchase the security at an agreed upon price and date. The Funds, through their custodian, take possession of the securities collateralizing the repurchase agreement. The collateral is marked to market daily to ensure that the market value of the underlying assets remains sufficient to protect the Funds in the event of default by the seller. Collateral for certain tri-party repurchase agreements is held at the counterparty's custodian in a segregated account for the benefit of the Funds and the counterparty. In connection with transactions in repurchase agreements , if the seller defaults and the value of the collateral declines or if the seller enters insolvency proceedings, realization of collateral by the Funds may be delayed or limited.

Notes to Financial Statements (Continued)

adjusted for amortization of discounts and premiums on debt securities, is earned from the settlement date and is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date.

Federal Income Tax
It is each Fund's intent to continue to comply with the provisions of subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"), applicable to a regulated investment company. Under such provisions, the Funds will not be subject to federal income taxes on their ordinary income and net realized capital gains to the extent they are distributed or deemed to have been distributed to their shareholders. Therefore, no federal income tax provision is required. Withholding taxes on foreign interest, dividends and capital gains have been provided for in accordance with the applicable country's tax rules and rates.

Dividends and Distributions to Shareholders
Dividends from net investment income and distributions of any net realized capital gains of each Fund are declared and paid annually and at other times as may be required to satisfy tax or regulatory requirements. Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. These differences are primarily due to investments in passive foreign investment companies and the deferral of wash sale losses. As a result, net investment income and net realized gain on investment transactions for a reporting period may differ significantly from distributions during such per iod.

Accordingly, the Funds may periodically make reclassifications among certain of their capital accounts without affecting the net asset value of the Funds.

During the year ended December 31, 2007, the following amounts were reclassified due to differences between book and tax accounting.

	Paid-in Capital			Accumulated Net Realized Gain on Investments			Undistributed Net Investment Income
Large Cap Value Fund	$	11,410		$	(39,974	)	$	28,564
Equity Index Fund		(15,498	)		72,963			(57,465	)
Growth Equity Fund		(19,549	)		15,939			3,610
NASDAQ-100 Fund		(3	)		220			(217	)
Small Cap Growth Equity Fund		(321,820	)		(737,980	)		1,059,800
Emerging Growth Fund		(112,748	)		1,177			111,571

Foreign Currency Translation
The books and records of the Funds are maintained in U.S. dollars. The market values of foreign currencies, foreign securities and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars at the mean of the buying and selling rates of such currencies against the U.S. dollar at the end of each business day. Purchases and sales of foreign securities and income and expense items are translated at the rates of exchange prevailing on the respective dates of such transactions. The Funds do not isolate that portion of the results of operations arising from changes in the exchange rates from that portion arising from changes in the market prices of securities. Net realized foreign currency gains and losses resul ting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions and the difference between the amounts of dividends recorded on the books of the Funds and the amount actually received.

Forward Foreign Currency Contracts
Each Fund may enter into forward foreign currency contracts in order to hedge the effect of currency movements of foreign denominated securities or obligations. A forward foreign currency contract is an agreement between two parties to buy and sell a currency at a set price on a future date. The market value of a forward foreign currency contract fluctuates with changes in foreign currency exchange and interest rates. Forward foreign currency contracts are marked to market daily and the change in their value is recorded by the Funds as an unrealized gain or loss. When a forward foreign currency contract is extinguished, through delivery or offset by entering into another forward foreign currency contract,

Notes to Financial Statements (Continued)

the Funds record a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value of the contract at the time it was extinguished or offset.

Forward foreign currency contracts involve a risk of loss from the potential inability of counterparties to meet the terms of their contracts and from unanticipated movements in foreign currency values and interest rates.

The notional or contractual amounts of these instruments represent the investments the Funds have in particular classes of financial instruments and do not necessarily represent the amounts potentially subject to risk. The measurement of the risk associated with these instruments is meaningful only when all related and offsetting transactions and counterparty risk are considered.

At December 31, 2007, the Funds had no open forward foreign currency contracts.

Delayed Delivery Transactions, When Issued Securities, and Forward Commitments
Each Fund may purchase or sell securities on a "when issued" or delayed delivery or on a forward commitment basis. The Funds use forward commitments to manage interest rate exposure or as a temporary substitute for purchasing or selling particular debt securities. Payment and delivery may take place after the customary settlement period for that security. The price of the underlying securities and the date when the securities will be delivered and paid for are fixed at the time the transaction is negotiated. These securities are valued on the basis of valuations furnished by a pricing service, authorized by the Trustees, which determines valuations taking into account appropriate factors such as institutional-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, trading characteristics and other market data. Securities for which no market quotation is available, are valued at fair value in accordance with procedures approved by the Trustees. The Funds record on a daily basis the unrealized appreciation (depreciation) based upon changes in the value of these securities. When a forward commitment contract is closed, the Funds record a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value of the contract at the time it was closed. Losses may arise due to changes in the value of the underlying securities or if the counterparty does not perform under the contract, or if the issuer does not issue the securities due to political, economic, or other factors. Funds monitor exposure to ensure counterparties are creditworthy and concentration of exposure is minimized.

Financial Futures Contracts
The Funds may purchase or sell financial futures contracts and options on such futures contracts for the purpose of hedging the market risk on existing securities or as a substitute for the purchase of securities. Futures contracts are contracts for delayed delivery of securities at a specific future date and at a specific price or yield. Upon entering into a contract, the Funds deposit and maintain as collateral such initial margin as required by the exchange on which the transaction is effected. Pursuant to the contract, the Fund agrees to receive from or pay to the broker an amount of cash equal to the daily fluctuation in value of the contract. Such receipts or payments are known as variation margin and are recorded by the Funds as unreali zed gains or losses. When the contract is closed, each Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. Futures contracts are valued at the settlement price established each day by the board of trade or exchange on which they are traded.

A summary of open futures contracts for the Equity Index Fund and the NASDAQ-100 Fund at December 31, 2007 was as follows:

Number of
Contracts

Type

Expiration Date

Notional
Contract
Value

Net Unrealized
Appreciation

Equity Index Fund

BUYS
56

S&P E-mini

3/20/08

4,136,160

12,322

NASDAQ-100 Fund

BUYS
6

Nasdaq 100 E-mini

3/20/08

252,570

6,417

Notes to Financial Statements (Continued)

Allocation of Operating Activity
In maintaining the records for the Equity Index Fund, the income and expense accounts are allocated to each class of shares. Investment income, unrealized and realized gains or losses are prorated among the classes of shares based on the relative net assets of each. Expenses are allocated to each class of shares depending on the nature of the expenditures. Administration fees, which are directly attributable to a class of shares, are charged to that class' operations. Expenses of the Fund not directly attributable to the operations of any class of shares are prorated among the classes to which the expense relates based on the relative net assets of each.

Foreign Securities
The Funds may also invest in foreign securities, subject to certain percentage restrictions. Investing in securities of foreign companies and foreign governments involves special risks and considerations not typically associated with investing in securities of U.S. companies and the U.S. Government. These risks include revaluation of currencies and future adverse political and economic developments. Moreover, securities of many foreign companies and foreign governments and their markets may be less liquid and their prices more volatile than those of securities of comparable U.S. companies and the U.S. Government.

Restricted Securities
Certain securities are illiquid and restricted as to resale. They have been valued in good faith under procedures established by the Board of Trustees, taking into consideration such factors as the Board deems appropriate. The Funds generally bear the costs, if any, associated with the disposition of restricted securities. Aggregate cost and fair value of these restricted securities held at December 31, 2007 were as follows:

	Aggregate Cost		Aggregate Value		Value as Percentage of Fund's Net Assets
Large Cap Value Fund	$	3,926,400	$	3,824,150		1.3	%
Emerging Growth Fund		46,400		50,986		0.3	%

3. Management Fees and Other Transactions

Investment Management Fees
Under agreements between the MML Trust and MassMutual on behalf of each Fund, MassMutual is responsible for providing investment management services for each Fund. In return for this service, MassMutual receives advisory fees quarterly based on the following annual rates.

For the Large Cap Value Fund, MassMutual receives a fee from the Fund at an annual rate of 0.80% on the first $100,000,000, 0.75% on the next $400,000,000 and 0.70% on assets over $500,000,000 of the average daily net asset value of the Fund.

For the Equity Index Fund, MassMutual receives a fee from the Fund at an annual rate on 0.10% of the average daily net asset value of the Fund.

For the Growth Equity Fund, MassMutual receives a fee from the Fund at an annual rate of 0.80% on the first $300,000,000, 0.77% on the next $300,000,000, 0.75% on the next $300,000,0000, 0.72% on the next $600,000,000 and 0.65% on assets over $1,500,000,000 of the average daily net asset value of the Fund.

For the NASDAQ-100 Fund, MassMutual receives a fee from the Fund at an annual rate of 0.45% on the first $200,000,000, 0.44% on the next $200,000,000 and 0.42% on assets over $400,000,000 of the average daily net asset value of the Fund.

Notes to Financial Statements (Continued)

For the Small Cap Growth Equity Fund, MassMutual receives a fee from the Fund at the annual rate of 1.075% on the first $200,000,000, 1.05% on the next $200,000,000, 1.025% on the next $600,000,000 and 1.00% on assets over $1,000,000,000 of the average daily net asset value of the Fund.

For the Emerging Growth Fund, MassMutual receives a fee from the Fund at the annual rate of 1.05% on the first $200,000,000, 1.00% on the next $200,000,000 and 0.95% on assets over $400,000,000 of the average daily net asset value of the Fund.

MassMutual has entered into investment sub-advisory agreements with the following unaffiliated investment sub-advisers: Davis Selected Advisers, L.P. for the Large Cap Value Fund, Northern Trust Investments, N.A. for the Equity Index Fund and the NASDAQ-100 Fund, T. Rowe Price Associates, Inc. for the Growth Equity Fund, Delaware Management Company ("DMC") for a portion of the Emerging Growth Fund, Insight Capital Research & Management, Inc. ("Insight Capital") for a portion of the Emerging Growth Fund, Waddell & Reed Investment Management Company for a portion of the Small Cap Growth Equity Fund, and Wellington Management Company, LLP for a portion of the Small Cap Growth Equity Fund. Prior to November 28, 2007, Grantham, Mayo, Van Otterloo & Co. LLC was the investment sub-advisor for the Growth Equity Fund. MassMutual pays a sub-advisory fee to each of these sub-advisers based upon the aggregate net assets under management whic h include (1) the average daily net assets of the specified Fund which it manages, and (2) the average daily net assets of all other funds or accounts of MassMutual or its affiliates for which the sub-adviser provides sub-advisory services and which have substantially the same investment objectives, policies and investment strategies.

The Fund sub-advisor fees are paid out of the management fees previously disclosed above.

Administration & Shareholder Service Fees
For the Equity Index Fund, under a separate administrative and shareholder services agreement between the Fund and MassMutual, MassMutual provides certain administrative and shareholder services and bears some class specific administrative expenses. In return for these services, MassMutual receives an administrative services fee monthly based upon the average daily net assets of the applicable class of shares of the Fund at the following annual rates: 0.30% on the first $100,000,000, 0.28% on the next $150,000,000 and 0.26% on assets in excess of $250,000,000 of Class I shares of the Fund, 0.19% of the average daily net assets of Class II shares of the Fund, and for Class III shares, an amount not to exceed 0.05% of the avera ge daily net assets of Class III shares.

Expense Waivers
MassMutual has agreed to bear the expenses (other than the management fees, interest, taxes, brokerage commissions, extraordinary litigation expenses and legal expenses, or other non-recurring or unusual expenses) of each Fund (other than the Equity Index Fund), excluding Acquired Fund* fees and expenses, in excess of 0.11% of the average daily net asset values of each Fund through April 30, 2008. This agreement cannot be terminated unilaterally by MassMutual.

MassMutual has agreed to bear the expenses of Class I, Class II and Class III of the Equity Index Fund (other than the management and administrative fees, interest, taxes, brokerage commissions, extraordinary litigation and legal expenses, or other non-recurring or unusual expenses), excluding Acquired Fund* fees and expenses, in excess of 0.05% of the average daily net asset values of each class of the Equity Index Fund through April 30, 2008. This agreement cannot be terminated unilaterally by MassMutual.

In addition, MassMutual has agreed to waive certain administrative and shareholder service fees payable by the Equity Index Fund on account of Class II and Class III shares.

* Acquired Fund fees and expenses represent approximate expenses borne indirectly by a Fund in its most recent fiscal year through investments in other pooled investment vehicles. The amount of Acquired Fund fees and expenses may change in the coming year due to a number of factors including, among others, a change in allocation of a Fund's investments among other pooled investment vehicles.

Notes to Financial Statements (Continued)

Rebated Brokerage Commissions
The Large Cap Value Fund and the Small Cap Growth Equity Fund have entered into agreements with certain brokers whereby the brokers will rebate, in cash, a portion of brokerage commissions. Rebated brokerage commissions are amounts earned by the Funds and are included with realized gain or loss on investment transactions presented in the Statement of Operations. For the year ended December 31, 2007, brokerage commissions rebated under these agreements were as follows:

	Rebated Commissions
Large Cap Value Fund	$	3,787
Small Cap Growth Equity Fund		55,539

Other
Certain Officers and Trustees of the Funds are also Officers of MassMutual. The compensation of each Trustee who is not an Officer of MassMutual is borne by the Funds.

Deferred Compensation
Trustees of the Funds who are not employees of MassMutual or its subsidiaries may elect to defer receipt of their annual fees in accordance with terms of the Non-Qualified Deferred Compensation Plan. Any amounts deferred shall accrue interest and shall be recorded on the Funds' books as other assets.

For the year ended December 31, 2007, no significant amounts have been deferred.

4. Purchases and Sales of Investments
Cost of purchases and proceeds from sales of investment securities (excluding short-term investments) for the year ended December 31, 2007, were as follows:

	Purchases				Sales
	Long-Term U.S. Government Securities		Other Long-Term Securities		Long-Term U.S. Government Securities		Other Long-Term Securities
Large Cap Value Fund	$	-	$	83,564,716	$	-	$	17,768,808
Equity Index Fund		-		22,986,998		-		25,361,296
Growth Equity Fund		-		27,810,999		-		30,136,190
NASDAQ-100 Fund		-		1,969,087		-		1,493,462
Small Cap Growth Equity Fund		-		181,531,519		-		133,610,754
Emerging Growth Fund		-		30,755,323		-		29,921,855

5. Capital Share Transactions
The Funds are authorized to issue an unlimited number of shares, with no par value in each class of shares. Changes in shares outstanding for each Fund were as follows:

	Year ended December 31, 2007						Year ended December 31, 2006
	Shares			Amount			Shares			Amount
Large Cap Value Fund
Sold		6,497,381		$	86,609,563			6,102,448		$	72,121,423
Issued as reinvestment of dividends		213,910			2,798,621			104,527			1,346,138
Redeemed		(1,629,776	)		(21,686,747	)		(1,134,554	)		(13,328,874	)
Net increase (decrease)		5,081,515		$	67,721,437			5,072,421		$	60,138,687
Equity Index Fund Class I
Sold		850,720		$	15,507,009			1,002,187		$	16,572,222
Issued as reinvestment of dividends		76,140			1,366,698			71,686			1,256,660
Redeemed		(937,656	)		(17,129,074	)		(1,136,209	)		(18,405,089	)
Net increase (decrease)		(10,796	)	$	(255,367	)		(62,336	)	$	(576,207	)
Equity Index Fund Class II
Sold		731,064		$	13,234,324			960,638		$	15,654,453
Issued as reinvestment of dividends		187,600			3,365,535			174,094			3,050,128
Redeemed		(833,012	)		(15,253,871	)		(2,145,184	)		(34,458,419	)
Net increase (decrease)		85,652		$	1,345,988			(1,010,452	)	$	(15,753,838	)

Notes to Financial Statements (Continued)

	Year ended December 31, 2007						Year ended December 31, 2006
	Shares			Amount			Shares			Amount
Equity Index Fund Class III
Sold		73,099		$	1,359,253			88,827		$	1,391,710
Issued as reinvestment of dividends		126,712			2,269,397			126,881			2,219,155
Redeemed		(699,262	)		(12,799,108	)		(1,855,114	)		(30,002,442	)
Net increase (decrease)		(499,451	)	$	(9,170,458	)		(1,639,406	)	$	(26,391,577	)
Growth Equity Fund
Sold		249,222		$	1,919,253			335,557		$	2,404,090
Issued as reinvestment of dividends		12,541			95,117			12,543			92,922
Redeemed		(615,787	)		(4,705,618	)		(533,380	)		(3,827,505	)
Net increase (decrease)		(354,024	)	$	(2,691,248	)		(185,280	)	$	(1,330,493	)
NASDAQ-100 Fund
Sold		644,122		$	3,325,858			349,978		$	1,463,976
Issued as reinvestment of dividends		482			2,524			947			4,218
Redeemed		(585,438	)		(2,893,368	)		(723,203	)		(3,063,183	)
Net increase (decrease)		59,166		$	435,014			(372,278	)	$	(1,594,989	)
Small Cap Growth Equity Fund
Sold		4,265,842		$	74,214,652			4,423,014		$	68,184,247
Issued as reinvestment of dividends		461,758			7,946,612			-			-
Redeemed		(1,304,245	)		(22,535,855	)		(977,001	)		(15,155,354	)
Net increase (decrease)		3,423,355		$	59,625,409			3,446,013		$	53,028,893
Emerging Growth Fund
Sold		827,138		$	6,254,056			570,498		$	3,497,313
Issued as reinvestment of dividends		-			-			-			-
Redeemed		(612,712	)		(4,275,459	)		(544,853	)		(3,333,314	)
Net increase (decrease)		214,426		$	1,978,597			25,645		$	163,999

6. Federal Income Tax Information
At December 31, 2007, the cost of securities and the unrealized appreciation (depreciation) in the value of investments owned by the Funds, as computed on a Federal income tax basis, were as follows:

	Federal Income Tax Cost		Tax Basis Unrealized Appreciation		Tax Basis Unrealized Depreciation			Net Unrealized Appreciation (Depreciation)
Large Cap Value Fund	$	253,768,324	$	59,135,620	$	(11,477,983	)	$	47,657,637
Equity Index Fund		328,322,967		121,755,226		(28,918,423	)		92,836,803
Growth Equity Fund		18,466,038		1,098,833		(483,147	)		615,686
NASDAQ-100 Fund		7,838,590		3,049,200		(478,043	)		2,571,157
Small Cap Growth Equity Fund		270,458,937		39,444,510		(9,458,556	)		29,985,954
Emerging Growth Fund		17,547,466		2,185,543		(776,033	)		1,409,510

At December 31, 2007, the following Funds had available, for Federal income tax purposes, unused capital losses:

	Expiring 2009		Expiring 2010		Expiring 2011		Expiring 2012		Expiring 2013
Equity Index Fund	$	-	$	-	$	-	$	-	$	2,632,027
Growth Equity Fund		14,298,960		7,953,799				-		-
NASDAQ-100 Fund				4,689,464		2,362,711		1,300,985
Emerging Growth Fund		1,009,583		3,402,428		-		-		-

Notes to Financial Statements (Continued)

Net capital loss carryforwards may be applied against any net realized taxable gains in each succeeding year, or until their respective expiration dates, whichever occurs first.

Certain differences exist from the amounts reflected in the Statement of Changes in Net Assets primarily due to the character of short-term capital gains treated as ordinary income for tax purposes.

The Fund distinguishes between distributions on a tax basis and a financial reporting basis. Accounting principles generally accepted in the United States of America require that only distributions in excess of tax basis earnings and profits be reported in the financial statements as a return of capital.

The tax character of distributions paid during the year ended December 31, 2007 was as follows:

	Ordinary Income		Long Term Capital Gain		Return of Capital
Large Cap Value Fund	$	2,777,747	$	20,874	$	-
Equity Index Fund		7,001,630		-		-
Growth Equity Fund		95,117		-		-
NASDAQ-100 Fund		2,524		-		-
Small Cap Growth Equity Fund		1,025,751		6,920,861		-

The tax character of distributions paid during the year ended December 31, 2006 was as follows:

	Ordinary Income		Long Term Capital Gain		Short Term Capital Gain		Return of Capital
Large Cap Value Fund	$	1,346,138	$	-	$	-	$	-
Equity Index Fund		6,525,943		-		-		-
Growth Equity Fund		92,922		-		-		-
NASDAQ-100 Fund		4,218		-		-		-

At December 31, 2007, the components of distributable earnings on a tax basis were as follows:

	Undistributed Ordinary Income		Long Term Capital Gain (Capital Loss Carryover)			Other Temporary Differences			Unrealized Appreciation (Depreciation)*
Large Cap Value Fund	$	-	$	279,667		$	(45,912	)	$	47,658,030
Equity Index Fund		-		(2,632,027	)		(141,184	)		92,849,125
Growth Equity Fund		-		(22,252,759	)		(9,936	)		615,686
NASDAQ-100 Fund		206		(8,353,160	)		(76,472	)		2,577,574
Small Cap Growth Equity Fund		-		-			(846,594	)		29,987,794
Emerging Growth Fund		-		(4,412,011	)		(6,114	)		1,409,510

* Includes unrealized appreciation (depreciation) on investments, derivatives and foreign currency denominated assets and liabilities if any.

Pursuant to Section 852 of the Internal Revenue Code, the following Funds have designated capital gain dividends for the year ended December 31, 2007:

	Long Term Capital Dividend
Large Cap Value Fund	$	20,874
Small Cap Growth Equity Fund		6,920,861

The following Funds elected to defer to January 1, 2008 post-October capital losses:

	Amount
NASDAQ-100 Fund	$	65,145
Small Cap Growth Equity Fund		808,564

Notes to Financial Statements (Continued)

The following Fund elected to defer to January 1, 2008 post-October currency losses:

				Amount
Small Cap Growth Equity Fund				$	1,254

During the year ended December 31, 2007 the Funds adopted Financial Accounting Standards Board Interpretation No. 48 "Accounting for Uncertainty in Income Taxes" ("FIN 48") with the impact of such adoption being recognized on June 29, 2007 in accordance with guidance provided by the Securities and Exchange Commission. The adoption of FIN 48 did not have a material effect on the net asset value, financial condition or results of operations of the Funds as there was no liability required for the recognition for unrecognized tax benefits during the year, nor were there any such liabilities to be recorded to the beginning net asset value of the Funds.

To the extent required, the Funds recognize interest and penalties, if any, related to unrecognized tax benefits as an income tax expense in the Statements of Operations. During the year ended December 31, 2007, the Funds did not incur any interest or penalties. The Funds are subject to examination by U.S. federal, state and foreign tax authorities for returns filed after 2004, 2005 and 2006, respectively.

7. Indemnifications
Under the Funds' organizational documents, current and former Trustees and Officers are provided with a limited indemnification against liabilities arising in connection with the performance of their duties to the Funds, and shareholders are indemnified against personal liability for obligations of the Funds. In the normal course of business, the Funds may also enter into contracts that provide general indemnifications. The Funds' maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against the Funds. The risk of material loss from such claims is considered remote.

8. New Accounting Pronouncements
In September 2006, Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" ("SFAS 157"), was issued and is effective for fiscal years beginning after November 15, 2007. SFAS 157 determines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. Management is currently evaluating the impact the adoption of SFAS 157 will have on the Funds' financial statement disclosures.

9. Proxy Voting (Unaudited)
A description of the policies and procedures that each Fund's investment adviser and sub-advisers use to vote proxies relating to the Fund's portfolio securities is available, without charge, upon request, by calling 1-888-309-3539, and on the Securities and Exchange Commission's website at http://www.sec.gov.

Information regarding how the Funds voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available, without charge, upon request, on the MassMutual website at http://www.massmutual.com and on the Securities and Exchange Commission's website at http://www.sec.gov.

10. Quarterly Reporting (Unaudited)
The Funds file their complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. The Funds' Forms N-Q are available on the SEC website at http://www.sec.gov. The Funds' Forms N-Q may be reviewed and copied at the SEC's Public Reference Room in Washington D.C. Information on the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.

11. Trustees' Approval of Investment Advisory Contracts (Unaudited)
At a meeting held on May 9, 2007, the Board of Trustees of MML Trust (the "Board"), including the Trustees who are not "interested persons" (as such term is defined in the 1940 Act) of MML Trust, the Adviser or Sub-Advisers (the "Independent Trustees"), approved the termination of the existing Sub-Advisory Agreement ("Prior Sub-Advisory Agreement") with Grantham, Mayo, Van Otterloo & Co. LLC ("GMO") for the Growth Equity Fund and voted to approve a new Sub-Advisory Agreement ("New Sub-Advisory Agreement") with T. Rowe Price Associates, Inc. ("T. Rowe Price").

Notes to Financial Statements (Continued)

After arriving at a decision to replace GMO as a Sub-Adviser of the Growth Equity Fund, the Trustees determined that it would be appropriate to find a sub-adviser from the same peer group as GMO but one with a more consistent record of performance. After careful consideration, the Trustees determined that it would be appropriate to hire T. Rowe Price as the Fund's new Sub-Adviser.

In approving the New Sub-Advisory Agreement, the Board discussed with Management and considered a wide range of information about, among other things: (i) T. Rowe Price and its personnel with responsibilities for providing services to the Fund; (ii) the terms of the New Sub-Advisory Agreement; (iii) the scope and quality of services that T. Rowe Price will provide under the New Sub-Advisory Agreement; (iv) the historical investment performance track record of T. Rowe Price; (v) the fees payable to T. Rowe Price by the Adviser and the effect of such fees on the profitability to the Adviser; and (vi) T. Rowe Price's practices regarding the selection and compensation of brokers and dealers that execute portfolio transactions for the Fund, and the broker's and dealer's provision of brokerage and research services to T. Rowe Price.

Based on the foregoing, the Board concluded that (i) the Adviser's level of profitability from its relationship to the Fund was not excessive and that the sub-advisory fee amount under the New Sub-Advisory Agreement was fair and reasonable; (ii) overall, the Board was satisfied with the nature, extent and quality of services expected to be provided under the New Sub-Advisory Agreement; and (iii) the terms of the New Sub-Advisory Agreement are fair and reasonable with respect to the Fund and are in the best interest of the Fund's shareholders. After carefully considering the information summarized above, the Board, including the Independent Trustees voting separately, unanimously voted to approve the New Sub-Advisory Agreement.

Prior to the votes being taken to approve the New Sub-Advisory Agreement, the Independent Trustees met separately in executive session to discuss the appropriateness of the contract. In their deliberations with respect to these matters, the Independent Trustees were advised by their independent legal counsel. The Independent Trustees weighed the foregoing matters in light of the advice given to them by their independent legal counsel as to the law applicable to the review of investment advisory contracts. In arriving at a decision, the Board, including the Independent Trustees, did not identify any single matter as all-important or controlling. The foregoing summary does not detail all of the matters considered.

The New Sub-Advisory Agreement took effect on November 28, 2007.

Report of Independent Registered Public Accounting Firm

To the Board of Trustees of MML Series Investment Fund and Shareholders of MML Large Cap Value Fund, MML Equity Index Fund, MML Growth Equity Fund, MML NASDAQ-100 Fund, MML Small Cap Growth Equity Fund and MML Emerging Growth Fund:

We have audited the accompanying statements of assets and liabilities, including the portfolios of investments, of MML Large Cap Value Fund, MML Equity Index Fund, MML Growth Equity Fund, MML NASDAQ-100 Fund, MML Small Cap Growth Equity Fund and MML Emerging Growth Fund (collectively the "Funds"), six of the funds comprising the MML Series Investment Fund (the "MML Trust"), as of December 31, 2007, and the related statements of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended. These financial statements and financial highlights are the responsibility of the MML Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The MML Trust is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits include consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion of the effectiveness of the MML Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and sign ificant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures include confirmation of securities owned as of December 31, 2007, by correspondence with the custodian and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of each of the Funds as of December 31, 2007, the results of their operations for the year then ended, the changes in their net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

Deloitte & Touche LLP
Boston, Massachusetts
February 15, 2008

Trustees and Officers (Unaudited)

The following table lists MML Trust's Trustees and Officers as of December 31, 2007; their address and age; their position with MML Trust; the length of time holding that position with MML Trust; their principal occupation(s) during the past five years; the number of portfolios in the fund complex they oversee; and other directorships they hold in companies subject to registration or reporting requirements of the Securities Exchange Act of 1934 (generally called "public companies") or in registered investment companies. MML Trust's Statement of Additional Information includes additional information about MML Trust's Trustees and is available, without charge, upon request by calling 1-888-309-3539 or by writing MML Funds, c/o Massachusetts Mutual Life Insurance Company, 1295 State Street, Springfield, Massachusetts 01111-0111, Attention: Retirement Services Marketing.

Disinterested
Trustees

Name, Address*,
and Age

Position(s)
Held with
Trust

Term
of Office**
and
Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Trustee

Other
Directorships
Held by Trustee

Richard W. Greene
Age: 72

Chairman and Trustee of MML Trust

Since
1999

Retired.

Trustee (since 1996), MassMutual Select Funds (open-end investment company).

Richard H. Ayers
Age: 65

Trustee of MML Trust

Since
1999

Retired.

Director, Applera Corporation; Trustee (since 1996), MassMutual Select Funds (open-end investment company).

Allan W. Blair
Age: 59

Trustee of MML Trust

Since
2003

President and Chief Executive Officer (since 1996), Economic Development Council of Western Massachusetts; President and Chief Executive Officer (since 1984), Westover Metropolitan Development Corporation.

Director (since 2001), Future Works, Inc.; Trustee (since 2003), MassMutual Select Funds (open-end investment company).

Mary E. Boland
Age: 68

Trustee of MML Trust

Since
1973

Attorney at Law (since 2004); Attorney at Law (1965-2004), Egan, Flanagan and Cohen, P.C. (law firm), Springfield, MA.

Trustee (since 1994), MassMutual Select Funds (open-end investment company).

R. Alan Hunter, Jr.
Age: 61

Trustee of MML Trust

Since
2003

Retired.

Director (since 2007), Actuant Corporation; Trustee (since 2003), MassMutual Select Funds (open-end investment company).

F. William Marshall, Jr. Age: 65

Trustee of MML Trust

Since
1996

Consultant (since 1999).

Trustee (since 2000), Board II Oppenheimer Funds; Trustee (since 1996), MassMutual Select Funds (open-end investment company).

Trustees and Officers (Unaudited) (Continued)

Interested
Trustees

Name, Address*,
and Age

Position(s)
Held with
Trust

Term
of Office**
and
Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Trustee

Other
Directorships
Held by Trustee

Robert E. Joyal
Age: 62

Trustee of MML Trust

Since
2003

Retired; President (2001-2003), Managing Director (2000-2001) Executive Director (1999-2000), David L. Babson & Company Inc.

Trustee (since 2003), President (1999-2003), MassMutual Corporate Investors and MassMutual Participation Investors (closed-end investment companies); Director (since 2003), Pemco Aviation Group, Inc.; Director (since 2006), Jefferies Group, inc. (investment bank); Director (since 2007), Scottish Re Group Ltd.; Trustee (since 2003), MassMutual Select Funds (open-end investment company).

Frederick C. Castellani Age: 61

Trustee

Vice President of MML Trust

Since
2001
Since
2006

Executive Vice President (since 2001), Senior Vice President (1996-2001), MassMutual.

Trustee and President (since 2001), MassMutual Select Funds (open-end investment company); Trustee, Vice Chairman and Vice President (since 2006) MML Series II Investment Fund (open-end investment company); Vice Chairman, Trustee, and President (since 2006), Vice President (2004-2006), MassMutual Premier Funds (open-end investment company).

Principal Officers
who are Not
Trustees

Name, Address*,
and Age

Position(s)
Held with
Trust

Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Officer

Richard J. Byrne
Age: 45

President of MML Trust

Since 2007

Vice President (since 2007), Assistant Vice President (2003-2007), MassMutual; Vice President (1997-2003), ING/Aetna Financial Services; President (since 2007), MML Series II Investment Fund (open-end investment company).

Trustees and Officers (Unaudited) (Continued)

Name, Address*,
and Age

Position(s)
Held with
Trust

Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Officer

Nicholas H. Palmerino
Age: 42

Chief Financial Officer and Treasurer of MML Trust

Since
2006

Assistant Vice President (since 2006), MassMutual; Vice President (2006), Consultant (2005-2006), JP Morgan Chase Worldwide Securities Services; Senior Vice President (2003-2004), CDC IXIS Asset Management Services, Inc. and CDC IXIS Asset Management Advisers, L.P.; Vice President (1996-2003), Loomis Sayles & Company, L.P.; Chief Financial Officer and Treasurer (since 2006), MassMutual Select Funds (open-end investment company); Chief Financial Officer and Treasurer (since 2006), MassMutual Premier Funds (open-end investment company); Chief Financial Officer and Treasurer (since 2006), MML Series II Investment Fund (open-end investment company).

Kristin L. Fafard
Age: 41

Vice President of MML Trust

Since 2005

Assistant Vice President (since 2005), Managing Director (2000-2003), MassMutual; Assistant Vice President (2000-2003), Allmerica Asset Management; Vice President (since 2005), MassMutual Select Funds (open-end investment company); Vice President (since 2005), MassMutual Premier Funds (open-end investment company); Vice President (since 2005), MML Series II Investment Fund (open-end investment company).

Philip S. Wellman
Age: 43

Vice President and Chief Compliance Officer of MML Trust

Since 2007

Vice President, Compliance (since 2007), Assistant Vice President and Associate General Counsel (2005-2006), MassMutual; Director, Office of General Counsel (2005-2006), Merrill Lynch, Pierce, Fenner & Smith Incorporated; Senior Vice President and Assistant General Counsel (2000-2006), Advest, Inc.; Vice President and Chief Compliance Officer (since 2007), MassMutual Select Funds (open-end investment company); Vice President and Chief Compliance Officer (since 2007), MML Series II Investment Fund (open-end investment company); Vice President and Chief Compliance Officer (since 2007), MassMutual Premier Funds (open-end investment company).

John E. Deitelbaum
Age: 39

Vice President, Secretary and Chief Legal Officer of MML Trust

Since 2006

Corporate Vice President and Associate General Counsel (since 2007), Vice President and Associate General Counsel (2006-2007), Second Vice President and Associate General Counsel (2000-2006), MassMutual; Vice President, Secretary and Chief Legal Officer (since 2006), MassMutual Select Funds (open-end investment company); Vice President, Clerk and Chief Legal Officer (since 2006), MML Series II Investment Fund (open-end investment company); Vice President, Clerk and Chief Legal Officer (since 2006), MassMutual Premier Funds (open-end investment company).

Eric H. Wietsma
Age: 41

Vice President of MML Trust

Since 2006

Corporate Vice President (since 2007), Vice President (2005-2007), MassMutual; Vice President (1999-2005), Hartford Life Insurance Company; Vice President (since 2006), MassMutual Select Funds (open-end investment company); Vice President (since 2006), MML Series II Investment Fund (open-end investment company); Vice President (since 2006), MassMutual Premier Funds (open-end investment company).

Trustees and Officers (Unaudited) (Continued)

Name, Address*,
and Age

Position(s)
Held with
Trust

Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Officer

Stephen J. Brunette
Age: 37

Vice President of MML Trust

Since 2007

Assistant Vice President (since 2007), Director (2006-2007), Investment Consultant (2003-2006), MassMutual; Vice President (since 2007), MML Series II Investment Fund (open-end investment company).

* The address of each Trustee and Principal Officer is the same as that for MML Trust; 1295 State Street, Springfield, Massachusetts 01111.

** Each Trustee of MML Trust serves until the next meeting of shareholders called for the purpose of electing Trustees and until the election and qualification of his successor or until he dies, resigns or is removed. Notwithstanding the foregoing, unless the Trustees determine that is desirable and in the best interest of MML Trust than an exception to the retirement policy of the Trust be made, a Trustee shall retire and cease to serve as a Trustee as of the first board meeting following the date on which the Trustee attains the age of seventy-two years.

Federal Tax Information (Unaudited)

For corporate shareholders, a portion of the ordinary dividends paid during the Fund's year ended December 31, 2007 qualified for the dividends received deduction, as follows:

Fund Name

Dividends Received
Deduction

Large Cap Value Fund	100.00	%

Equity Index Fund	100.00	%

Growth Equity Fund	100.00	%

NASDAQ-100 Fund	100.00	%

Small Cap Growth Equity Fund	81.93	%

Under Section 854(b)(2) of the Code, the Funds hereby designate the following maximum amounts as qualified dividends for purposes of the maximum rate under Section 1(h)(11) of the Code for the period ended December 31, 2007:

Fund Name

Qualified Dividend
Income

Large Cap Value Fund	100.00	%

Equity Index Fund	100.00	%

Growth Equity Fund	100.00	%

NASDAQ-100 Fund	100.00	%

Small Cap Growth Equity Fund	98.78	%

Other Information (Unaudited)

Fund Expenses December 31, 2007

Expense Examples				The following information is in regards to expenses for the six months ended December 31, 2007: As a shareholder of the Funds, you incur ongoing costs, including management fees and other Fund expenses. These examples are intended to help you understand your ongoing costs (in dollars) of investing in the Funds and to compare these costs with the ongoing costs of investing in other mutual funds. These examples are based on an investment of $1,000 invested for the six months ended December 31, 2007.

Actual Expenses				The first four columns of the table below provide information about actual account values and actual expenses. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading entitled "Operating Expenses Incurred" to estimate the expenses you paid on your account during this period.

Hypothetical Example For Comparison Purposes				The last two columns of the table below provide information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only. Therefore, the last two columns of the table are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds.

	Beginning Value		Annualized Expense Ratio			Ending Value (Based on Actual Returns and Expenses)		Operating Expenses Incurred*		Ending Value (Based on Hypothetical Returns and Expenses)		Operating Expenses Incurred*
Large Cap Value Fund	$	1,000		0.83	%	$	976.60	$	4.14	$	1,021.02	$	4.23
Equity Index Fund
Class I	$	1,000		0.46	%	$	984.70	$	2.30	$	1,022.89	$	2.35
Class II	$	1,000		0.30	%	$	985.20	$	1.50	$	1,023.69	$	1.53
Class III	$	1,000		0.16	%	$	986.10	$	0.80	$	1,024.40	$	0.82
Growth Equity Fund	$	1,000		0.92	%	$	994.90	$	4.63	$	1,020.57	$	4.69
NASDAQ-100 Fund	$	1,000		0.56	%	$	1,077.50	$	2.93	$	1,022.38	$	2.85
Small Cap Growth Equity Fund	$	1,000		1.15	%	$	988.40	$	5.76	$	1,019.41	$	5.85
Emerging Growth Fund	$	1,000		1.17	%	$	1,037.80	$	6.01	$	1,019.31	$	5.96

* Expenses are calculated using the annualized expense ratio for the six months ended December 31, 2007, multiplied by the average account value over the period, multiplied by the number of days in the period, divided by the number of days in the year.

Securities offered through registered representatives of MML Investors Services, Inc., member FINRA and SIPC (www.Þnra.org and www.sipc.org), 1295 State Street, SpringÞeld, MA 01111.

MassMutual Financial Group is a marketing name for Massachusetts Mutual Life Insurance Company (MassMutual) and its afÞliated companies and sales representatives.

L4540 208
C:13867-00

MML Series
Investment Fund

Annual Report

MML Asset Allocation Fund

MML Equity Income Fund

MML Income & Growth Fund

MML Growth & Income Fund

MML Blue Chip Growth Fund

MML Large Cap Growth Fund

MML Concentrated Growth Fund

MML Mid Cap Value Fund

MML Mid Cap Growth Fund

MML Small Cap Value Fund

MML Small Cap Index Fund

MML Global Fund

MML Foreign Fund

MML Conservative Allocation Fund

MML Balanced Allocation Fund

MML Moderate Allocation Fund

MML Growth Allocation Fund

MML Aggressive Allocation Fund

This annual report describes certain funds offered through the Series. Your variable product prospectus will list which of these funds are available through your variable product.

December 31, 2007

insure invest retire

Table of Contents

Letter to Shareholders					1

Portfolio Manager Reports					3

Portfolio of Investments

MML Asset Allocation Fund					63

MML Equity Income Fund					74

MML Income & Growth Fund					77

MML Growth & Income Fund					80

MML Blue Chip Growth Fund					84

MML Large Cap Growth Fund					87

MML Concentrated Growth Fund					89

MML Mid Cap Value Fund					91

MML Mid Cap Growth Fund					94

MML Small Cap Value Fund					99

MML Small Cap Index Fund					105

MML Global Fund					113

MML Foreign Fund					117

MML Conservative Allocation Fund					120

MML Balanced Allocation Fund					121

MML Moderate Allocation Fund					122

MML Growth Allocation Fund					123

MML Aggressive Allocation Fund					124

Statement of Assets and Liabilities					126

Statement of Operations					132

Statement of Changes in Net Assets					138

Financial Highlights					148

Notes to Financial Statements					157

Report of Independent Registered Public Accounting Firm					177

Trustees and Officers (Unaudited)					178

Federal Tax Information (Unaudited)					182

Other Information (Unaudited)					183

MML Series Investment Fund Report – President's Letter to Shareholders

To Our Shareholders

December 31, 2007

Richard J. Byrne

Given the numerous challenges the market presented to investors in 2007, we believe current market conditions emphasize the critical nature of maintaining a disciplined focus on a long-term investment strategy. Financial professionals recommend that investment strategies align with an individual's risk tolerance, financial goals and time horizon – employing diversification based on these factors. It is extremely difficult to predict future market conditions, so developing and maintaining an appropriate investment strategy is key during periods of market volatility.

2007's Challenging Environment

* Indexes are unmanaged, do not incur fees or expenses and cannot be purchased directly for investment.

(Continued)

MML Series Investment Fund Report – President's Letter to Shareholders (Continued)

MSCI EAFE Index fell 1.75% for the fourth quarter. In this environment, higher-quality bonds performed well amid growing concerns about a slowing economy and even a possible recession in the United States. In the end, the Lehman Brothers Aggregate Bond Index advanced 3.00% for the quarter.

A Look Back at 2007 as We Head into 2008

Outlook

Richard J. Byrne
President

MML Asset Allocation Fund – Portfolio Manager Report

What is the investment objective of the MML Asset Allocation Fund – and who is the Fund's sub-adviser?
The Fund seeks to provide high total return consistent with preservation of capital over the long term by investing its assets in both equity and fixed-income securities. The Fund's sub-adviser, Capital Guardian Trust Company (Capital Guardian) determines the asset allocation between equity and fixed-income securities. Up to 80% of the Fund's assets may be invested in equities; up to 60% in fixed income.

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned 1.14%, lagging the 5.49% advance of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies, and the 6.97% return of the Lehman Brothers^® Aggregate Bond Index, an unmanaged index of fixed-rate investment-grade securities with at least one year to maturity, combining the Lehman Brothers U.S. Government/Credit Index and the Lehman Brothers Mortgage-Backed Securities Index. The Fund also underperformed the 6.53% return of the Lipper Balanced Fund Index, an unmanaged, equally weighted index of the 30 largest mutual funds within the Lipper Balanced Category.

What was the investment background during the period?
U.S. equities saw significant volatility in the first quarter of 2007 – gains in the first part of the period, then turbulence in late February and into March. Concerns about the subprime mortgage industry, earnings surprises and comments from the Federal Reserve ("Fed") all contributed to the volatility, though the S&P 500^® Index ended the quarter with a slight gain. In the fixed-income markets, the Lehman Brothers^® Aggregate Bond Index advanced 1.50% during the first quarter. Corporate bond spreads widened somewhat in the wake of the subprime situation, but remained relatively narrow at about 0.90% over Treasuries. In the second quarter of 2007, domestic equities rose sharply, powered by merger and acquisition activity and strong corporate earnings. Gains in April and May, however, were tempered by declines in June. Unlike stocks, bonds declined in the second quarter, amid fading market expectations of monetary easing, further unraveling of the subprime mortgage market and a tightening of credit by major banks and brokerage lenders. Corporate bonds and mortgage-backed securities lagged Treasuries.

In the third quarter of 2007, U.S. equities ended higher, despite a volatile period in which trouble in subprime mortgage lending spilled over into the broader credit and equity markets. Stocks tumbled in late July and mid-August, as a number of global hedge funds and other financial institutions reported losses from investments in structured bonds, credit holdings and quantitative strategies. However, rate cuts by the Fed helped the S&P 500 Index recover and end the quarter up slightly. Finally, in the fourth quarter of 2007, U.S. stocks stumbled on concerns over the effects of the credit crunch and declining corporate profits on overall economic growth. Financial lenders posted large losses and recessionary fears weighed on cyclical stocks, helping to send the S&P 500 Index down for the quarter.

What factors contributed to the Fund's performance?
For the first quarter of 2007, returns were positive on an absolute basis, although the portfolio underperformed its benchmark, the Lipper Balanced Fund Index. Financial stocks were the biggest relative drag on results. Specifically, the Fund's large overweight position in thrifts and mortgage companies, which suffered due to the subprime meltdown, and stock selection among the consumer finance companies hampered performance. The portfolio's lower-than-benchmark weightings in utilities and telecommunication companies also detracted. Turning to the second quarter of 2007, the portfolio's overweight position in equities helped results. The Fund also benefited from its underweight position and stock selection in the financials sector. Other contributing factors within financials included owning consumer finance companies that soared on buyout news, and holding an underweight position in diversified financials. Selection among health care companies, particularly in pharmaceuticals and biotechnology, detracted from comparative returns, as did holdings in the information technology sector. Within the bond portfolio, the Fund's overweight allocation to BBB rated securities and an underweight position in mortgage-backed securities supported relative results, while investments in financials issues detracted.

The portfolio benefited from stock selection and overweighting in information technology in the third quarter of 2007. Stock selection in health care, especially pharmaceuticals, was the biggest detractor from the Fund's results. The underweight position in energy also hurt returns, as did stock selection in

MML Asset Allocation Fund – Portfolio Manager Report (Continued)

the financials sector. Finally, in the fourth quarter of 2007, the portfolio was once again hampered by stock selection in the financials sector, particularly holdings among the thrifts and mortgage companies. Washington Mutual slid as the housing and credit markets deteriorated and after regulators began investigating how the company set values for mortgages sold to investors. Sallie Mae shares dropped after a $25 billion takeover collapsed. Stock selection in technology was negative, as SanDisk sank on disappointing earnings and weak flash memory prices. Stock selection and an underweight position in energy also weighed on results.

What is your outlook?
In our view, a U.S. economic slowdown is underway. While we do not yet know the full scope of the credit market crisis, we believe it will take time for all the ramifications to work through the financial system and the economy. This credit crunch is wider in scope and more complex than past credit crises. That said, certain indicators lead us to believe that the U.S. economy has shown some signs of slowing, but not of a serious breakdown. Employment and economic growth have deteriorated somewhat amid modest inflation. In addition, the Fed has shown that it is willing to act to ensure market stability. High oil prices may remain a challenge, but not, in our view, an insurmountable one. We are encouraged by the strength of exports, whic h have been helped by the U.S. dollar's decline. While the dollar continues to lose yield support, the possibility of declining real interest rates outside the U.S., in tandem with a reduced U.S. current account deficit and low valuation, could slow or stop the decline later in 2008.

MML Asset Allocation Fund – Portfolio Manager Report (Continued)

MML Asset Allocation Fund

Industry Table

(% of Net Assets) on 12/31/07

U.S. Government Agencies	10.5	%
Diversified Financial	6.2	%
Pharmaceuticals	5.2	%
Retail	5.0	%
Telecommunications	4.6	%
Insurance	4.0	%
Banks	3.4	%
Internet	3.4	%
Semiconductors	3.4	%
Oil & Gas	3.3	%
Manufacturing	3.2	%
U.S. Treasury Obligations	3.1	%
WL Collateral CMO	3.0	%
Computers	2.7	%
Media	2.4	%
Oil & Gas Services	2.4	%
Health Care — Services	2.2	%
Sovereign	2.1	%
Software	2.0	%
Foods	1.9	%
Biotechnology	1.7	%
Electric	1.6	%
Health Care — Products	1.5	%
Beverages	1.5	%
Savings & Loans	1.5	%
Transportation	1.4	%
Chemicals	1.3	%
Mining	1.2	%
Aerospace & Defense	1.2	%
Commercial MBS	1.2	%
Credit Card ABS	1.0	%
Engineering & Construction	0.8	%
Agriculture	0.8	%
Automobile ABS	0.8	%
Electronics	0.8	%
Auto Manufacturers	0.7	%
Lodging	0.6	%
Real Estate Investment Trusts (REITS)	0.5	%
Coal	0.4	%
Electrical Components & Equipment	0.4	%
Home Equity ABS	0.3	%
Pipelines	0.3	%
Holding Company — Diversified	0.3	%
Advertising	0.3	%
Commercial Services	0.3	%
Household Products	0.2	%
Automotive & Parts	0.2	%
Cosmetics & Personal Care	0.2	%
Investment Companies	0.2	%
Iron & Steel	0.2	%
Airlines	0.2	%
Packaging & Containers	0.1	%
Leisure Time	0.1	%
WL Collateral Support CMO	0.1	%
Home Builders	0.1	%
Building Materials	0.1	%
Regional (State & Province)	0.1	%
Other ABS	0.0	%
Machinery — Construction & Mining	0.0	%
Total Long-Term Investments	98.2	%
Short-Term Investments and Other Assets and Liabilities	1.8	%
	100.0	%

MML Asset Allocation Fund

Ten Largest Holdings

(% of Net Assets) on 12/31/07

FNMA, 6.000% due 03/01/2036	2.7	%
Google, Inc. Cl. A	2.0	%
General Electric Co.	1.6	%
UnitedHealth Group, Inc.	1.5	%
JP Morgan Chase & Co.	1.4	%
FNMA, 5.500% due 01/01/2037	1.3	%
Genentech, Inc.	1.3	%
Royal Dutch Shell PLC Sponsored ADR (United Kingdom)	1.2	%
Target Corp.	1.2	%
Wachovia Corp.	1.2	%

MML Asset Allocation Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Asset Allocation Fund, the S&P 500 Index, the Lehman Brothers Aggregate Bond Index and the Lipper Balanced Fund Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Asset Allocation Fund		1.14	%		3.51	%
S&P 500 Index		5.49	%		9.12	%
Lehman Brothers Aggregate Bond Index		6.97	%		7.34	%
Lipper Balanced Fund Index		6.53	%		8.12	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the S&P 500 Index, the Lehman Brothers Aggregate Bond Index and the Lipper Balanced Fund Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Equity Income Fund – Portfolio Manager Report

What is the investment objective of the MML Equity Income Fund – and who is the Fund's sub-adviser?
The Fund seeks dividend income and long-term capital growth by investing in the common stocks of established companies. The Fund's sub-adviser is T. Rowe Price Associates, Inc. (T. Rowe Price).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned 3.13%, underperforming the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies. Conversely, the Fund outpaced the -0.17% return of the Russell 1000^® Value Index, an unmanaged index representative of stocks with a greater-than-average value orientation among the stocks of the largest 1000 U.S. companies based on capitalization.

What was the investment background during the period?
Domestic stocks showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. Although the Dow Jones Industrial Average^SM ("the Dow") notched a new closing high in February, the blue-chip benchmark declined slightly for the three months ended March 31, 2007. The S&P 500 Index finished with a small advance, as did the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance. A depreciating U.S. dollar supported the returns of foreign stocks, helping the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index outperform its U.S. counterp arts for the quarter. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and the MSCI EAFE Index advanced slightly. The Fed's fourth-quarter interest rate reductio ns (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance?
For the 12-month period ended December 31, 2007, relative to the Russell 1000 Value Index, the Fund's performance was driven by stock selection in the financials sector, where the Fund's underweight position in the hard-hit banking and diversified financial services stocks sector proved particularly beneficial. For the year, Fund management's stock picks also drove relative results in the information technology sector, where the portfolio benefited from an overweight position in software giant Microsoft – which rallied on strong sales of its Vista operating system, Microsoft Office suite of products and Xbox game console. An overweight position in and stock selection among health care shares were furt her sources of relative strength for the portfolio.

At the other end of the spectrum, the Fund's underweight position in the utilities sector proved a hindrance, as these stocks, with their steady to improving fundamentals and credit quality, were attractive during 2007's economic and market uncertainty. Stock selection also detracted in the utilities sector – as did our choices in telecommunications and materials. In the materials sector,

MML Equity Income Fund – Portfolio Manager Report (Continued)

International Paper was the leading detractor because of a poor economic outlook and rising costs. In telecommunications, the Fund's underweight stake in the large diversified telecommunication firms, particularly AT&T and BellSouth (which benefited from their merger) hindered the Fund's performance. Additionally, overweight positions in Qwest Communications International and Sprint Nextel detracted from results. Qwest faces substantial investment costs to compete in the broadband arena, while Sprint continues to struggle to realize the benefits of its merger with Nextel.

What is your outlook?
Numerous forces will continue to influence the direction that the market takes throughout 2008. These include the price of oil; the subprime crisis and its impact on housing in particular, and the U.S. economy in general; Fed policy and inflation – to name just a few. We believe, however, that the Fund continues to be positioned to seek market opportunities as they emerge. Fund sub-adviser T. Rowe Price's Chairman and veteran value manager Brian Rogers suggests investors be patient through this period of market transition and adjustment: "We are correcting the excesses that we saw in the strong economic environment over the last five years." He points to the Fed's emerging focus on market stability and relative attractiveness of e quities versus fixed-income securities as positives. "And when you look at valuations," Rogers continued, "we see some great opportunities if you are willing to accept risk, making this arguably a great time to invest in some of the more troubled sectors of the market. And that's what our value funds will be doing. We look forward to better times ahead."

MML Equity Income Fund – Portfolio Manager Report (Continued)

MML Equity Income Fund

Industry Table

(% of Net Assets) on 12/31/07

Oil & Gas	11.0	%
Manufacturing	7.3	%
Banks	6.9	%
Diversified Financial	6.4	%
Pharmaceuticals	6.1	%
Insurance	5.5	%
Media	5.3	%
Telecommunications	5.3	%
Electric	4.2	%
Foods	3.0	%
Retail	2.7	%
Financial Services	2.6	%
Cosmetics & Personal Care	2.4	%
Household Products	2.2	%
Forest Products & Paper	2.0	%
Health Care — Products	2.0	%
Software	2.0	%
Beverages	1.9	%
Chemicals	1.6	%
Semiconductors	1.5	%
Computers	1.5	%
Oil & Gas Services	1.2	%
Mining	1.2	%
Building Materials	1.1	%
Transportation	1.0	%
Biotechnology	0.9	%
Gas	0.8	%
Housewares	0.8	%
Home Furnishing	0.7	%
Internet	0.7	%
Commercial Services	0.6	%
Leisure Time	0.6	%
Distribution & Wholesale	0.6	%
Toys, Games & Hobbies	0.5	%
Environmental Controls	0.5	%
Agriculture	0.5	%
Pipelines	0.4	%
Aerospace & Defense	0.4	%
Home Builders	0.3	%
Auto Manufacturers	0.3	%
Airlines	0.3	%
Total Long-Term Investments	96.8	%
Short-Term Investments and Other Assets and Liabilities	3.2	%
	100.0	%

MML Equity Income Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

General Electric Co.	3.2	%
Government Reserve Investment Fund	2.6	%
Chevron Corp.	2.4	%
Exxon Mobil Corp.	2.4	%
JP Morgan Chase & Co.	2.3	%
AT&T, Inc.	2.1	%
Microsoft Corp.	2.0	%
Royal Dutch Shell PLC Sponsored ADR (United Kingdom)	1.8	%
International Paper Co.	1.4	%
Merck & Co., Inc.	1.4	%

MML Equity Income Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Equity Income Fund, the S&P 500 Index and the Russell 1000 Value Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Equity Income Fund		3.13	%		8.43	%
S&P 500 Index		5.49	%		9.12	%
Russell 1000 Value Index		(0.17	)%		7.23	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Income & Growth Fund – Portfolio Manager Report

What is the investment objective of the MML Income & Growth Fund – and who is the Fund's sub-adviser?
The Fund seeks growth of capital by investing in common stocks of companies which the Fund's sub-adviser, American Century Investment Management, Inc. (American Century), believes offer prospects for capital growth. Income is a secondary objective.

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned -0.77%, underperforming the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

What was the investment background during the period?
Stocks in the U.S. showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. The Dow Jones Industrial Average^SM ("the Dow"), a benchmark of blue-chip stocks, declined slightly. Conversely, the S&P 500 Index, a measure of U.S. large-cap stock performance, and the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, each finished with a small advance. The depreciating U.S. dollar continued to support the returns of foreign stocks – helping drive the strong performance of the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and the MSCI EAFE Index advanced slightly. The fourth quarter began on a posit ive note, with investors still savoring the third-quarter Fed-engineered interest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance?
In the first quarter of 2007, the portfolio's modest overweight in the financials sector, which was the worst-performing sector in the S&P 500 Index, hampered the Fund's performance. However, stock selection, particularly in the financials sector, was the primary hindrance for the Fund during this time frame. On the positive side, the Fund's stock picks were most successful in the industrials sector. The materials sector, which posted the best absolute returns in the portfolio, also enhanced results relative to the S&P 500 Index. In the second quarter of 2007, the top-contributing sectors were the most economically sensitive segments, led by materials and consumer discretionary stocks. The only sec tor of the portfolio to detract meaningfully from relative performance was health care, where an overweight allocation in health care services providers and stock selection among biotechnology stocks hindered the Fund's progress.

In the third quarter of 2007, the portfolio underperformed the benchmark in eight of 10 market sectors – most notably, financials and information technology. Stock selection among thrifts and mortgage finance companies, as well as capital markets firms, contributed the bulk of the

MML Income & Growth Fund – Portfolio Manager Report (Continued)

underperformance in the financials sector. The portfolio's overweight position in Countrywide Financial, the nation's largest mortgage lender, significantly hampered relative results – as the company lost 47% during the third quarter. In the information technology sector, stock selection among semiconductor manufacturers and IT services providers detracted the most from relative results. The only sector of the portfolio to add meaningful value to performance in the third quarter, compared with the S&P 500 Index, was telecommunication services. In the fourth quarter of 2007, the Fund had less-than-favorable stock selection in eight of 10 market sectors. The portfolio's health care holdings detracted the most from relative performance. The Fund's largest individual detractor was health care provider WellCare, which declined by 60% on concerns about fraud following a government raid on the company's headquarters in October. The portfol io's financial stocks also underperformed their counterparts in the S&P 500. In fact, five of the 10 strongest detractors came from this sector. During the fourth quarter, stock selection contributed positively to relative performance in just two sectors of the portfolio: telecommunication services and consumer discretionary. In telecommunications services, the most significant investment decision was not to invest in Sprint Nextel, which fell by 31% as operational missteps led to a decline in the company's subscriber base and market share. In the consumer discretionary sector, favorable stock choices in the household durables and hotels and restaurants industries contributed the most to relative performance.

What is your outlook?
As we enter 2008, investors face numerous challenges. Nevertheless, we are committed to adhere to our structured, disciplined investment approach for both stock selection and portfolio construction. Our investment strategy incorporates both growth and value measures (with a value tilt) in our stock selection process – in an effort to seek consistent long-term performance regardless of short-term market conditions.

MML Income & Growth Fund – Portfolio Manager Report (Continued)

MML Income & Growth Fund

Industry Table

(% of Net Assets) on 12/31/07

Oil & Gas	15.0	%
Diversified Financial	8.7	%
Computers	8.2	%
Health Care — Products	4.8	%
Aerospace & Defense	4.4	%
Pharmaceuticals	4.2	%
Insurance	4.1	%
Telecommunications	4.1	%
Banks	3.8	%
Software	3.8	%
Health Care — Services	3.3	%
Retail	2.7	%
Transportation	2.6	%
Electric	2.6	%
Media	2.4	%
Household Products	2.2	%
Semiconductors	2.1	%
Manufacturing	2.0	%
Biotechnology	1.9	%
Commercial Services	1.8	%
Chemicals	1.7	%
Mining	1.6	%
Beverages	1.5	%
Office Equipment/Supplies	1.2	%
Foods	1.0	%
Automotive & Parts	1.0	%
Electronics	0.9	%
Real Estate Investment Trusts (REITS)	0.8	%
Toys, Games & Hobbies	0.6	%
Machinery — Construction & Mining	0.6	%
Cosmetics & Personal Care	0.4	%
Coal	0.4	%
Home Builders	0.4	%
Internet	0.4	%
Agriculture	0.4	%
Iron & Steel	0.3	%
Housewares	0.3	%
Auto Manufacturers	0.2	%
Savings & Loans	0.2	%
Entertainment	0.2	%
Building Materials	0.2	%
Airlines	0.1	%
Apparel	0.1	%
Engineering & Construction	0.1	%
Machinery — Diversified	0.1	%
Packaging & Containers	0.1	%
Forest Products & Paper	0.1	%
Oil & Gas Services	0.0	%
Total Long-Term Investments	99.6	%
Short-Term Investments and Other Assets and Liabilities	0.4	%
	100.0	%

MML Income & Growth Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Exxon Mobil Corp.	5.3	%
Microsoft Corp.	3.3	%
Chevron Corp.	2.9	%
Johnson & Johnson	2.8	%
Pfizer, Inc.	2.5	%
International Business Machines Corp.	2.5	%
ConocoPhillips	2.4	%
Hewlett-Packard Co.	2.3	%
JP Morgan Chase & Co.	2.2	%
Bank of America Corp.	2.2	%

MML Income & Growth Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Income & Growth Fund and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Income & Growth Fund		(0.77	)%		6.33	%
S&P 500 Index		5.49	%		9.12	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Growth & Income Fund – Portfolio Manager Report

What is the investment objective of the MML Growth & Income Fund – and who is the Fund's sub-adviser?
The Fund seeks capital appreciation and income by investing at least 80% of its net assets, under normal market conditions, in equity securities and equity-related securities of companies domiciled in the U.S. with market capitalizations greater than $1 billion at the time of purchase. The Fund's sub-adviser is Capital Guardian Trust Company (Capital Guardian).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned -0.33%, underperforming the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

What was the investment background during the period?
U.S. equities saw significant volatility in the first quarter of 2007 – rising in the first part of the period, then experiencing turbulence in late February and into March. Concerns about the subprime mortgage industry, earnings surprises and comments from the Federal Reserve ("Fed") all contributed to the volatility, though the S&P 500 Index ended the quarter with a slight gain. In the fixed-income markets, the Lehman Brothers^® Aggregate Bond Index advanced 1.50% during the first quarter. Corporate bond spreads widened somewhat in the wake of the subprime story, but remained relatively narrow at about 0.90% over Treasuries. Domestic equities rose sharply in the second quarter of 2007, with gains in April and May tempered by declines in June. The equity rally was powered by merger and acquisition activity and strong corporate earnings. Unlike stocks, bonds declined in the second quarter, amid fading market expectations of monetary easing, further unraveling of the subprime mortgage market and a tightening of credit by major banks and brokerage lenders. Corporate bonds and mortgage-backed securities lagged Treasuries.

U.S. equities ended higher for the third quarter of 2007, despite a volatile time frame in which trouble in subprime mortgage lending spilled over into the broader credit and equity markets. Stocks tumbled in late July and mid-August as a number of hedge funds and other financial institutions around the world reported losses related to the subprime crisis. A 0.50% interest rate cut by the Fed helped the equity markets recover in the short term, however. In the final quarter of 2007, U.S. stocks stumbled on concerns about the impact of the credit crunch and declining corporate profits on overall economic growth. Financial lenders posted large losses, recession fears weighed on cyclical stocks and domestic stocks ended the fourth quarter with a deficit.

What factors contributed to the Fund's performance?
The Fund's quarterly returns were positive on an absolute basis for the first three months of 2007, although the portfolio underperformed the S&P 500 Index. Financial stocks provided the biggest relative drag on results. Specifically, the portfolio's large overweight position in thrifts and mortgage companies, which suffered due to the subprime mortgage problems, and the Fund's stock selection among consumer finance companies were damaging. On the upside, the Fund's choices of consumer discretionary stocks were a driver of relative performance. Overall, the portfolio's information technology holdings contributed to performance, although its large exposure to the sector did not. In the second quarter of 2007, the portfolio benefited from its underweight position and stock selection in financials and having an underweight allocation to diversified financials. Stock selection and a lower-than-benchmark weighting in consumer staples also boosted returns. Despite being underweight in the sector, the Fund's choice of energy stocks also drove relative returns. Finally, stock selection among health care companies detracted from comparative returns, as did the Fund's stock selection in information technology.

In the third quarter of 2007, the portfolio benefited from stock selection and an overweight position in information technology. Stock selection in the consumer discretionary sector was positive, although the Fund's overweight position in that sector was not. The Fund's investments in the materials sector also added to relative returns. In the fourth quarter of 2007, the portfolio was hampered by stock selection in the financials sector – particularly, portfolio holdings among the thrifts and mortgage companies. Washington Mutual, for example, slid as the housing and credit markets deteriorated and

MML Growth & Income Fund – Portfolio Manager Report (Continued)

after regulators began investigating how the company set values for mortgages sold to investors. Sallie Mae shares dropped after a $25 billion takeover collapsed. Stock selection in the technology sector was a hindrance to Fund performance, as SanDisk sank on disappointing earnings and weak flash memory prices. The Fund's stock picks and its underweight position in energy also weighed on performance.

What is your outlook?
In our view, a U.S. economic slowdown is underway. While we do not yet know the full scope of the credit market crisis, we believe it will take time for its impact to work through the financial system and the economy. This credit crunch is wider in scope and more complex than past credit crises. That said, we will seek to position the portfolio to withstand the market challenges that we may face as 2008 progresses.

MML Growth & Income Fund – Portfolio Manager Report (Continued)

MML Growth & Income Fund

Industry Table

(% of Net Assets) on 12/31/07

Pharmaceuticals	7.8	%
Retail	6.9	%
Diversified Financial	6.7	%
Telecommunications	5.8	%
Internet	4.9	%
Semiconductors	4.9	%
Manufacturing	4.3	%
Insurance	4.2	%
Oil & Gas	4.1	%
Computers	3.9	%
Oil & Gas Services	3.5	%
Banks	3.4	%
Health Care — Services	2.9	%
Media	2.7	%
Software	2.7	%
Foods	2.6	%
Biotechnology	2.5	%
Health Care — Products	2.2	%
Beverages	2.1	%
Transportation	2.0	%
Mining	1.9	%
Chemicals	1.9	%
Savings & Loans	1.9	%
Aerospace & Defense	1.8	%
Electric	1.8	%
Agriculture	1.3	%
Engineering & Construction	1.2	%
Electronics	1.2	%
Auto Manufacturers	1.0	%
Lodging	0.9	%
Electrical Components & Equipment	0.7	%
Coal	0.6	%
Commercial Services	0.5	%
Household Products	0.3	%
Automotive & Parts	0.3	%
Cosmetics & Personal Care	0.3	%
Investment Companies	0.3	%
Advertising	0.3	%
Iron & Steel	0.2	%
Real Estate Investment Trusts (REITS)	0.2	%
Machinery — Construction & Mining	0.2	%
Airlines	0.2	%
Leisure Time	0.2	%
Building Materials	0.1	%
Home Builders	0.1	%
Total Long-Term Investments	99.5	%
Short-Term Investments and Other Assets and Liabilities	0.5	%
	100.0	%

MML Growth & Income Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Google, Inc. Cl. A	2.8	%
UnitedHealth Group, Inc.	2.2	%
General Electric Co.	2.1	%
JP Morgan Chase & Co.	2.0	%
Genentech, Inc.	1.9	%
Royal Dutch Shell PLC Sponsored ADR (United Kingdom)	1.9	%
Target Corp.	1.8	%
Wachovia Corp.	1.7	%
United Parcel Service, Inc. Cl. B	1.7	%
Cisco Systems, Inc.	1.5	%

MML Growth & Income Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Growth & Income Fund and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Growth & Income Fund		(0.33	)%		2.38	%
S&P 500 Index		5.49	%		9.12	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Blue Chip Growth Fund – Portfolio Manager Report

What is the investment objective of the MML Blue Chip Growth Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term capital growth by normally investing at least 80% of its net assets in the common stocks of large and medium-sized blue chip growth companies. Income is a secondary objective. The Fund's sub-adviser is T. Rowe Price Associates, Inc. (T. Rowe Price).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned 12.67%, outpacing the 11.81% return of the Russell 1000^® Growth Index, an unmanaged index consisting of those Russell 1000 securities (representing the 1000 largest U.S. companies based on market capitalization) with greater-than-average growth orientation that tend to exhibit higher price-to-book ratios and forecasted growth values than securities in the value universe. The Fund also outperformed the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

What was the investment background during the period?
Domestic stocks showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. Although the Dow Jones Industrial Average^SM ("the Dow") notched a new closing high in February, the blue-chip benchmark declined slightly for the three months ended March 31, 2007. The S&P 500 Index finished with a small advance, as did the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance. A depreciating U.S. dollar supported the returns of foreign stocks, helping the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index outperform its U.S. counterp arts for the quarter. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and the MSCI EAFE Index advanced slightly. The Fed's fourth-quarter interest rate reductio ns (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance?
For the 12-month period ended December 31, 2007, stock selection and a beneficial underweight in the poor-performing consumer discretionary sector were the greatest drivers of the Fund's performance. The primary area of strength was the Internet and catalog retail industry, led by Amazon.com. An overweight position in the energy sector, in tandem with favorable stock selection, also contributed to the Fund's results for the year. An additional benefit was Fund management's stock selection in the telecommunication services sector, which helped offset a detrimental overweight in this sector. Stock picks in the information technology sector also helped drive the Fund's performance for the 12-month period.

MML Blue Chip Growth Fund – Portfolio Manager Report (Continued)

Hindering the portfolio's progress in 2007 was its overweight position and weak stock selection in the financials sector, which was devastated by the subprime mortgage crisis. In addition, not owning utilities stocks detracted from performance, as that sector became attractive to investors amid increasing economic uncertainty. Finally, the Fund's underweight position in the consumer staples sector had a negative effect on returns. In particular, not owning Coca-Cola or Altria Group, two impressive performers, detracted from portfolio results.

What is your outlook?
In the midst of a variety of investor concerns, from inflation, a possible recession and tighter credit conditions to the housing slump, subprime fallout and geopolitical events, we believe that prospects for corporate earnings growth and relatively stable interest rates will be favorable for the markets in 2008. Valuations are not as supportive as they were in 2007, which gives us caution. However, quality, consistent-growth companies continue to appear attractive in our view.

MML Blue Chip Growth Fund – Portfolio Manager Report (Continued)

MML Blue Chip Growth Fund

Industry Table

(% of Net Assets) on 12/31/07

Telecommunications	9.2	%
Diversified Financial	8.3	%
Software	7.7	%
Pharmaceuticals	7.1	%
Internet	6.7	%
Manufacturing	6.0	%
Retail	5.9	%
Oil & Gas Services	5.5	%
Computers	4.6	%
Health Care — Services	4.2	%
Banks	3.9	%
Semiconductors	3.9	%
Health Care — Products	3.6	%
Oil & Gas	2.9	%
Aerospace & Defense	2.6	%
Media	1.9	%
Lodging	1.7	%
Engineering & Construction	1.7	%
Biotechnology	1.7	%
Chemicals	1.7	%
Insurance	1.7	%
Commercial Services	1.6	%
Cosmetics & Personal Care	1.3	%
Mining	1.1	%
Advertising	0.6	%
Beverages	0.5	%
Toys, Games & Hobbies	0.4	%
Entertainment	0.3	%
Foods	0.3	%
Transportation	0.3	%
Electronics	0.2	%
Auto Manufacturers	0.1	%
Total Long-Term Investments	99.2	%
Short-Term Investments and Other Assets and Liabilities	0.8	%
	100.0	%

MML Blue Chip Growth Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Google, Inc. Cl. A	3.2	%
General Electric Co.	3.2	%
Microsoft Corp.	2.9	%
Schlumberger Ltd.	2.6	%
Danaher Corp.	2.4	%
Apple, Inc.	2.4	%
State Street Corp.	2.2	%
Amazon.com, Inc.	2.0	%
CVS Caremark Corp.	1.9	%
Smith International, Inc.	1.8	%

MML Blue Chip Growth Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Blue Chip Growth Fund, the Russell 1000 Growth Index and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Blue Chip Growth Fund		12.67	%		11.23	%
Russell 1000 Growth Index		11.81	%		10.70	%
S&P 500 Index		5.49	%		9.12	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Large Cap Growth Fund – Portfolio Manager Report

What is the investment objective of the MML Large Cap Growth Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term capital appreciation by normally investing at least 80% of its net assets in the common stocks and securities convertible into common stocks of companies which the Fund's sub-adviser believes offer prospects for long-term growth and which, at the time of purchase, have market capitalizations of at least approximately $10 billion. The Fund's sub-adviser is AllianceBernstein L.P. (AllianceBernstein).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned 13.57%, outpacing the 11.81% return of the Russell 1000^® Growth Index, an unmanaged index consisting of those Russell 1000 securities (representing the 1000 largest U.S. companies based on market capitalization) with greater-than-average growth orientation that tend to exhibit higher price-to-book ratios and forecasted growth values than securities in the value universe. The Fund also outperformed the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

What was the investment background during the period?
Domestic stocks showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. Although the Dow Jones Industrial Average^SM ("the Dow") notched a new closing high in February, the blue-chip benchmark declined slightly for the three months ended March 31, 2007. The S&P 500 Index finished with a small advance, as did the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, which barely managed to post a gain for the period. The U.S. stock market was inconsistent in the second quarter of 2007, with gains in April and May being partially offset by a pullback in June. Nevertheless, most major indexe s ended solidly ahead for the time frame. The market moves were driven largely by economic indicators that suggested U.S. Gross Domestic Product ("GDP") growth, which appeared to have bottomed out in the first quarter, would show renewed strength in the second. Initially, the market cheered the news of the economy's resilience, but continued signs of strength prompted fears that the Federal Reserve ("Fed") might resume its tightening instead of starting to cut interest rates as previously expected.

The third quarter of 2007 saw a rekindling of stock market volatility around the world, particularly in the U.S. Behind the market's uncertainty were spreading defaults in U.S. subprime mortgage loans, which initially affected smaller lenders focused on the subprime market. But concerns subsequently moved into the mainstream, as Countrywide Financial, the nation's largest independent mortgage lender, announced that July foreclosures had spiked – raising fears that a broad tightening of credit standards could trigger a market-wide credit crunch. In August, the Fed cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additio nal 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence.

What factors contributed to the Fund's performance?
During the first quarter of 2007, the Fund benefited from strong stock selection in the health care sector. On the other hand, stock selection within the consumer discretionary and consumer staples sectors was the largest detractor from performance. Sector allocation slightly hindered the Fund's returns in the first quarter. Specifically, the portfolio's overweight position in the financials sector, which was the worst performer, and a small underweight position in the strong-performing utilities

MML Large Cap Growth Fund – Portfolio Manager Report (Continued)

sector, hampered the Fund's progress. In the second quarter of 2007, weak stock selection in the information technology sector detracted from returns. On the positive side, stock selection within the materials and industrials sectors proved the largest contributor to second-quarter results. The portfolio also received a boost from its underweight allocation to consumer staples, which was one of the worst-performing sectors for the period.

During the third quarter of 2007, the Fund's performance was driven by strong stock selection across most sectors, but most significantly within the information technology and industrials sectors. Stock selection within the financials sector, in which the portfolio held an overweight position, was the largest detractor. During the fourth quarter of 2007, strong stock selection across many sectors, but particularly information technology and industrials, provided the Fund with strength. Stock selection within the materials sector, in which the Fund held an overweight position, also was additive. From a sector perspective, the portfolio's underweight position in the poorly performing consumer discretionary sector helped limit its negative impact, as this sector was hit by growing worries about a slowdown in consumer spending. During the final quarter of 2007, the largest detractor from performance was stock selection within the ene rgy and consumer discretionary sectors. Underweight positions in the consumer staples and utilities sectors also hindered the Fund's progress.

What is your outlook?
While we have seen recent indications of growth's leadership, the value that investors are placing on future growth remains at unusually low levels, suggesting there is still considerable room to outperform. We remain aggressively positioned to pursue this opportunity.

MML Large Cap Growth Fund – Portfolio Manager Report (Continued)

MML Large Cap Growth Fund

Industry Table

(% of Net Assets) on 12/31/07

Computers	12.4	%
Diversified Financial	10.6	%
Pharmaceuticals	10.2	%
Oil & Gas Services	6.9	%
Internet	6.8	%
Telecommunications	5.7	%
Semiconductors	5.7	%
Manufacturing	4.6	%
Chemicals	4.3	%
Health Care — Products	3.7	%
Biotechnology	3.5	%
Retail	3.4	%
Health Care — Services	2.9	%
Engineering & Construction	2.7	%
Cosmetics & Personal Care	2.6	%
Beverages	2.5	%
Machinery — Diversified	2.5	%
Aerospace & Defense	2.0	%
Software	1.6	%
Oil & Gas	1.6	%
Foods	1.3	%
Media	0.8	%
Electrical Components & Equipment	0.5	%
Electronics	0.5	%
Lodging	0.4	%
Total Long-Term Investments	99.7	%
Short-Term Investments and Other Assets and Liabilities	0.3	%
	100.0	%

MML Large Cap Growth Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Google, Inc. Cl. A	6.8	%
Apple, Inc.	6.1	%
Cisco Systems, Inc.	4.1	%
Hewlett-Packard Co.	3.7	%
Gilead Sciences, Inc.	3.4	%
Schlumberger Ltd.	3.2	%
CME Group, Inc.	3.1	%
Abbott Laboratories	3.0	%
Honeywell International, Inc.	3.0	%
Franklin Resources, Inc.	3.0	%

MML Large Cap Growth Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Large Cap Growth Fund, the Russell 1000 Growth Index and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Large Cap Growth Fund		13.57	%		7.98	%
Russell 1000 Growth Index		11.81	%		10.70	%
S&P 500 Index		5.49	%		9.12	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Concentrated Growth Fund – Portfolio Manager Report

What is the investment objective of the MML Concentrated Growth Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term growth of capital by investing primarily in common stocks of companies that the Fund's sub-adviser, Legg Mason Capital Management, Inc. (Legg Mason), believes offer above-average growth potential and trade at a significant discount to the sub-adviser's assessment of their intrinsic value. Any income realized will be incidental to the Fund's objective.

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund's Class I shares returned 15.04%, outpacing the 11.81% return of the Russell 1000^® Growth Index, an unmanaged index consisting of those Russell 1000 securities (representing the 1000 largest U.S. companies based on market capitalization) with greater-than-average growth orientation that tend to exhibit higher price-to-book ratios and forecasted growth values than securities in the value universe. The Fund also outperformed the 5.49% return of the S&P 500^® Index, a widely recognized, unmanaged index representative of common stocks of larger capitalized U.S. companies.

What was the investment background during the period?
Stocks in the U.S. showed little change during the first quarter of 2007, despite a significant increase in volatility across the board. The Dow Jones Industrial Average^SM ("the Dow"), a benchmark of blue-chip stocks, declined slightly. Conversely, the S&P 500 Index and the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stocks, each finished with a small advance. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mort gages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of infla tionary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence.

What factors contributed to the Fund's performance?
From a sector allocation perspective, performance during the first quarter of 2007 was hurt most by the Fund's absence from other-energy (energy related businesses other than those included in the integrated oil sector) and materials/processing, which were the two best-performing sectors in the market. The portfolio's significant overweight position in financial services also hampered results, as investors worried that subprime mortgage lending weakness might morph into a contagion affecting the broader credit spectrum. On the upside, the Fund's overweight position in the strong consumer discretionary sector and underweight position in weak technology stocks bolstered returns. In the second quarter of 2007 , the Fund's sector allocations once again played a major role in its performance. For example, the portfolio's high weighting in the weak-performing consumer discretionary sector detracted from results – although strong stock selection in that same sector was a primary factor in the portfolio's outperformance during the period. Conversely, the Fund's absence from the strong-performing other-energy sector and an underweight position in technology hurt relative results.

MML Concentrated Growth Fund – Portfolio Manager Report (Continued)

During the third quarter of 2007, from a sector allocation perspective, the portfolio's high weighting in the weak-performing consumer discretionary sector detracted from results. What is noteworthy about this is the fact that strong stock selection in consumer discretionary, combined with the portfolio's overweight position in that group, was the primary reason for the portfolio's overall outperformance during the third quarter. An overweight position in the weak financial services sector also hurt relative results. Once again, in the fourth quarter of 2007, the portfolio's large weighting in the weak consumer discretionary sector hampered the Fund's progress. Performance was also pressured by the Fund's underweight positions in consumer staples and other energy, which both performed well. On the upside, the portfolio's overweight position in materials and processing, the top-performing sector for the period, helped to of fset negative effects elsewhere.

What is your outlook?
While we continue to monitor issues in the credit and housing markets and the economy overall, we believe the stock market looks very attractive from a valuation standpoint, as well as compared to the bond market. Even allowing for the possibility that consensus earnings estimates may be overly optimistic, we still see the potential for stocks to outperform their fixed-income counterparts in 2008.

MML Concentrated Growth Fund – Portfolio Manager Report (Continued)

MML Concentrated Growth Fund

Industry Table

(% of Net Assets) on 12/31/07

Internet	24.3	%
Telecommunications	16.1	%
Engineering & Construction	11.7	%
Software	6.3	%
Diversified Financial	6.3	%
Media	4.0	%
Semiconductors	3.7	%
Manufacturing	3.7	%
Electrical Components & Equipment	3.5	%
Commercial Services	3.2	%
Foods	3.1	%
Insurance	2.4	%
Transportation	2.3	%
Machinery — Construction & Mining	2.2	%
Water	2.0	%
Electronics	2.0	%
Total Long-Term Investments	96.8	%
Short-Term Investments and Other Assets and Liabilities	3.2	%
	100.0	%

MML Concentrated Growth Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Yahoo!, Inc.	8.0	%
Nokia Oyj Sponsored ADR (Finland)	7.2	%
Qualcomm, Inc.	6.7	%
Amazon.com, Inc.	6.2	%
eBay, Inc.	5.1	%
Electronic Arts, Inc.	4.1	%
Fluor Corp.	4.1	%
XM Satellite Radio Holdings, Inc. Cl. A	4.0	%
The Shaw Group, Inc.	3.9	%
Texas Instruments, Inc.	3.7	%

MML Concentrated Growth Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Concentrated Growth Fund Class I, Class II, the Russell 1000 Growth Index and the S&P 500 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 -12/31/07}
MML Concentrated Growth Fund Class I		15.04	%		10.16	%
MML Concentrated Growth Fund Class II		15.20	%		10.30	%
Russell 1000 Growth Index		11.81	%		10.70	%
S&P 500 Index		5.49	%		9.12	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

MML Mid Cap Value Fund – Portfolio Manager Report

What is the investment objective of the MML Mid Cap Value Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term capital growth. Income is a secondary objective. The Fund's sub-adviser is American Century Investment Management, Inc. (American Century).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned -2.32%, trailing the -1.42% return of Russell Midcap^® Value Index, an unmanaged index that measures the performance of those companies in the Russell Midcap Index with lower price-to-book ratios and lower forecasted growth values. The Fund also underperformed the 5.60% return of the Russell Midcap Index, an unmanaged index that measures the performance of the 800 smallest companies in the Russell 1000^® Index, a capitalization-weighted index of the 1,000 U.S. companies with the largest market capitalization.

As we originally noted in the Fund's June 30, 2007 semi-annual report, going forward, the Fund's performance will be compared to the Russell Midcap Value Index rather than the Russell Midcap Index because the Russell Midcap Value Index more closely represents the Fund's investment strategy.

What was the investment background during the period?
Stocks in the U.S. showed little change during the first quarter of 2007, despite a significant increase in volatility. The Dow Jones Industrial Average^SM ("the Dow"), a benchmark of blue-chip stocks, declined slightly. Conversely, the S&P 500^® Index, a measure of U.S. large-cap stock performance, and the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, each finished with a small advance. The depreciating U.S. dollar continued to support the returns of foreign stocks – helping drive the strong performance of the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and the MSCI EAFE Index advanced slightly. The fourth quarter began on a posit ive note, with investors still savoring the third-quarter Fed-engineered interest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance?
During the first quarter of 2007, effective stock selection in the consumer discretionary sector provided some of the best relative returns for the Fund compared to the Russell Midcap Value Index. The information technology sector was another source of relative strength for the Fund. On the downside, the portfolio's underweight position in the utilities sector was a significant drag on performance. In addition, the financials sector detracted from results on both an absolute and a relative basis. Turning to the second quarter of 2007, the Fund's returns benefited from positive contributions on an absolute basis from all but one sector. Favorable stock selection and an underweight position in the struggling financials sector contributed to performance, while the Fund's positions in consumer

MML Mid Cap Value Fund – Portfolio Manager Report (Continued)

staples and telecommunications also boosted results. Meanwhile, portfolio holdings in the materials sector detracted.

Stock selection in the consumer staples and utilities sectors added positively to both absolute and relative performance in the third quarter of 2007. Conversely, the portfolio's allocation to the financials sector detracted on both an absolute and relative basis, as a significant overweight position in thrifts proved detrimental to the Fund's results. In addition, the portfolio's mix of insurance stocks was also a drag on results. Turning to the fourth quarter of 2007, the Fund's information technology holdings contributed the most to relative performance. An overweight position in consumer staples also benefited the Fund because, during difficult economic times, consumer staples stocks are regarded as sound, defensive investments. The portfolio's allocation to makers of food and household products was particularly advantageous. On the downside, despite the Fund's underweight position in the financials sector, portfolio holdings in that sector were a drag on results. Finally, the Fund's underweight position in energy – the Russell Midcap Value Index's best performing sector – hurt relative results as 2007 came to a close. Because of valuations, the portfolio did not own certain energy companies, such as Hess and Noble Energy, both of which boosted the Russell Midcap Value Index's performance.

What is your outlook?
The Fund's objective is to help investors achieve long-term capital growth by investing in medium-sized companies. Regardless of market conditions, the portfolio's management team remains committed to its discipline of seeking mid-cap companies whose shares appear to be undervalued for reasons unrelated to the firms' fundamental or financial health.

MML Mid Cap Value Fund – Portfolio Manager Report (Continued)

MML Mid Cap Value Fund

Industry Table

(% of Net Assets) on 12/31/07

Foods	9.6	%
Electric	8.9	%
Banks	7.1	%
Insurance	6.6	%
Entertainment	5.0	%
Gas	4.2	%
Household Products	4.1	%
Health Care — Products	3.8	%
Investment Companies	3.2	%
Diversified Financial	3.1	%
Packaging & Containers	3.0	%
Electrical Components & Equipment	2.7	%
Semiconductors	2.6	%
Retail	2.4	%
Health Care — Services	2.3	%
Environmental Controls	1.9	%
Electronics	1.7	%
Airlines	1.6	%
Toys, Games & Hobbies	1.5	%
Machinery — Diversified	1.4	%
Pharmaceuticals	1.3	%
Office Equipment/Supplies	1.3	%
Beverages	1.3	%
Office Furnishings	1.2	%
Computers	1.1	%
Oil & Gas	1.0	%
Chemicals	0.9	%
Forest Products & Paper	0.8	%
Real Estate Investment Trusts (REITS)	0.8	%
Auto Manufacturers	0.8	%
Housewares	0.8	%
Pipelines	0.8	%
Automotive & Parts	0.8	%
Building Materials	0.8	%
Home Builders	0.8	%
Home Furnishing	0.7	%
Savings & Loans	0.7	%
Manufacturing	0.6	%
Transportation	0.6	%
Distribution & Wholesale	0.6	%
Cosmetics & Personal Care	0.6	%
Telecommunications	0.3	%
Software	0.3	%
Total Long-Term Investments	95.6	%
Short-Term Investments and Other Assets and Liabilities	4.4	%
	100.0	%

MML Mid Cap Value Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

iShares S&P MidCap 400 Index Fund	3.2	%
Bemis Co., Inc.	3.1	%
Puget Energy, Inc.	2.9	%
Kimberly-Clark Corp.	2.8	%
Portland General Electric Co.	2.8	%
International Speedway Corp. Cl. A	2.7	%
Southwest Gas Corp.	2.6	%
ConAgra Foods, Inc.	2.4	%
Speedway Motorsports, Inc.	2.2	%
SunTrust Banks, Inc.	2.2	%

MML Mid Cap Value Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Mid Cap Value Fund, the Russell Midcap Value Index and the Russell Midcap Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Mid Cap Value Fund		(2.32	)%		5.09	%
Russell Midcap Value Index		(1.42	)%		5.34	%
Russell Midcap Index		5.60	%		7.22	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell Midcap Value Index and the Russell Midcap Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Mid Cap Growth Fund – Portfolio Manager Report

What is the investment objective of the MML Mid Cap Growth Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term capital appreciation by investing, under normal conditions, at least 80% of its net assets in a broadly diversified portfolio of common stocks of mid-cap companies whose earnings the Fund's sub-adviser, T. Rowe Price Associates, Inc. (T. Rowe Price), expects to grow at a faster rate than the average company.

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned 16.89%, exceeding the 11.43% return of the Russell Midcap^® Growth Index, a widely recognized, unmanaged index which measures the performance of those Russell Midcap companies with higher price-to-book ratios and higher forecasted growth values. The Fund's 16.89% return also outperformed the 7.96% return of the S&P MidCap 400^® Index, a widely recognized, unmanaged index representative of common stocks of mid-capitalized U.S. companies.

As we originally noted in the Fund's June 30, 2007 semi-annual report, going forward, the Fund's performance will be compared to the Russell Midcap Growth Index rather than the S&P MidCap 400 Index because the Russell Midcap Growth Index more closely represents the Fund's investment strategy. The Fund will retain the S&P MidCap 400 Index as its supplemental benchmark for performance comparisons.

What was the investment background during the period?
Domestic stocks showed little change during the first quarter of 2007, despite a significant increase in volatility. Although the Dow Jones Industrial Average^SM ("the Dow") notched a new closing high in February, the blue-chip benchmark declined slightly for the three months ended March 31, 2007. The S&P 500 Index finished with a small advance, as did the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance. A depreciating U.S. dollar supported the returns of foreign stocks, helping the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index outperform its U.S. counterparts for the quar ter. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and the MSCI EAFE Index advanced slightly. The Fed's fourth-quarter interest rate reductio ns (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ramifications of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance?
The financials sector was the greatest contributor to the Fund's performance during the 12-month period ended December 31, 2007, on the strength of stock selection and a significant underweight position. Stock selection in the insurance industry and an overweight in capital markets also contributed. Additionally, the portfolio had no exposure to the thrifts and mortgage finance industry, minimizing the impact of the housing crisis on the Fund's returns. The information technology sector was the next greatest contributor to performance. Strong stock selection led the way, although this was partially offset by a detrimental overweight. Stock selection in the consumer discretionary sector contributed to the F und's returns, but the portfolio's overweight position in this weak-performing

MML Mid Cap Growth Fund – Portfolio Manager Report (Continued)

sector slightly offset those results. Portfolio holdings in Amazon.com, Chipotle Mexican Grill, and Discovery Holdings proved to be especially productive.

The primary drag on performance in 2007 was weak stock selection in the industrials and business services sectors. The portfolio's underweight position in materials, the second-highest performing sector, also hampered performance, although this was slightly offset by stock selection.

What is your outlook?
Mid-cap growth stocks have enjoyed excellent performance over the last few years, driven by merger/acquisition and leveraged buyout activity. Recently, however, weak performance in this market segment has proven that trend to be unsustainable.

We believe that the Fund's steady strategy and long-term focus can help to provide much better capital preservation during challenging market environments than the more aggressive investment strategies that have gained popularity in recent years.

MML Mid Cap Growth Fund – Portfolio Manager Report (Continued)

MML Mid Cap Growth Fund

Industry Table

(% of Net Assets) on 12/31/07

Telecommunications	7.0	%
Retail	7.0	%
Commercial Services	6.3	%
Semiconductors	5.3	%
Pharmaceuticals	5.3	%
Software	5.1	%
Internet	5.0	%
Oil & Gas Services	4.6	%
Oil & Gas	4.0	%
Health Care — Products	3.4	%
Electronics	3.4	%
Computers	3.3	%
Biotechnology	3.0	%
Manufacturing	2.9	%
Media	2.5	%
Diversified Financial	2.4	%
Insurance	2.4	%
Aerospace & Defense	2.3	%
Coal	2.1	%
Health Care — Services	2.0	%
Advertising	1.9	%
Entertainment	1.7	%
Lodging	1.4	%
Electrical Components & Equipment	1.4	%
Mining	1.0	%
Energy — Alternate Sources	1.0	%
Home Furnishing	1.0	%
Automotive & Parts	0.9	%
Foods	0.8	%
Machinery — Diversified	0.8	%
Airlines	0.7	%
Transportation	0.6	%
Auto Manufacturers	0.6	%
Banks	0.4	%
Engineering & Construction	0.4	%
Building Materials	0.3	%
Distribution & Wholesale	0.2	%
Beverages	0.2	%
Electric	0.2	%
Environmental Controls	0.2	%
Leisure Time	0.2	%
Metal Fabricate & Hardware	0.1	%
Pipelines	0.1	%
Iron & Steel	0.1	%
Home Builders	0.1	%
Machinery — Construction & Mining	0.1	%
Chemicals	0.1	%
Cosmetics & Personal Care	0.1	%
Household Products	0.1	%
Toys, Games & Hobbies	0.1	%
Banking, Savings & Loans	0.0	%
Textiles	0.0	%
Office Furnishings	0.0	%
Total Long-Term Investments	96.1	%
Short-Term Investments and Other Assets and Liabilities	3.9	%
	100.0	%

MML Mid Cap Growth Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Smith International, Inc.	1.7	%
Roper Industries, Inc.	1.6	%
CONSOL Energy, Inc.	1.5	%
Amazon.com, Inc.	1.5	%
VeriSign, Inc.	1.4	%
Rockwell Collins, Inc.	1.4	%
Juniper Networks, Inc.	1.4	%
Ametek, Inc.	1.3	%
EOG Resources, Inc.	1.3	%
DST Systems, Inc.	1.2	%

MML Mid Cap Growth Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Mid Cap Growth Fund, the Russell Midcap Growth Index and the S&P MidCap 400 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Mid Cap Growth Fund		16.89	%		10.12	%
Russell Midcap Growth Index		11.43	%		8.23	%
S&P MidCap 400 Index		7.96	%		5.38	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell Midcap Growth Index and the S&P MidCap 400 Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges.

MML Small Cap Value Fund – Portfolio Manager Report

What is the investment objective of the MML Small Cap Value Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term total return by investing, under normal circumstances, at least 80% of its net assets in a broadly diversified portfolio of equity investments in small-cap U.S. issuers, including foreign issuers that are traded in the United States. The Fund's sub-advisers are Goldman Sachs Asset Management, L.P. (GSAM) and AllianceBernstein L.P. (AllianceBernstein). Each sub-adviser is responsible for a portion of the portfolio, but not necessarily equal weighted.

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned -18.31%, underperforming the -9.78% return of the Russell 2000^® Value Index, a widely recognized, unmanaged index that measures the performance of those Russell 2000 Index Companies with lower price-to-book ratios and lower forecasted growth rates.

What was the investment background during the period?
Stocks in the U.S. showed little change during the first quarter of 2007, despite a significant increase in volatility. The Dow Jones Industrial Average^SM ("the Dow"), a benchmark of blue-chip stocks, declined slightly. Conversely, the S&P 500^® Index, a measure of U.S. large-cap stock performance, and the NASDAQ Composite^® Index ("NASDAQ"), a barometer of technology stock performance, each finished with a small advance. The depreciating U.S. dollar continued to support the returns of foreign stocks – helping drive the strong performance of the Morgan Stanley Capital International Europe, Australasia, Far East ("MSCI^® EAFE^®") Index. Most U.S. stock indexes advanced in the second quarter of 2007, as stocks rode a wave of optimism over corporate earnings and overcame short periods of increased volatility associated with investor concerns about soft retail sales, rising interest rates, inflation, the housing market and subprime mortgages.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and the MSCI EAFE Index advanced slightly. The fourth quarter began on a posit ive note, with investors still savoring the third-quarter Fed-engineered interest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period: The MSCI EAFE Index fell 1.75% for the fourth quarter.

What factors contributed to the Fund's performance?
In the first quarter of 2007, from a sector perspective, the Fund's stock selection within the information technology, consumer discretionary and health care sectors detracted from its performance. On the other hand, the Fund's best results came from its industrials and consumer staples holdings. With respect to investment themes, the Fund's underperformance relative to the Russell 2000 Value Index was largely the result of a drawdown in the momentum factor in the first few weeks of February – the period leading up to the market decline at the end of that month. Turning to the second quarter of 2007, overall stock selection was less than favorable. The Fund's holdings in the information technology, fi nancials and industrials sectors were the least successful relative to their peers in the Russell 2000 Value Index. On the upside, stock picks in the materials and energy sectors contributed the most to the Fund's relative performance. Returns for the investment themes were mixed for this period. Momentum and profitability were the biggest detractors from relative returns. On the upside, the valuation and analyst sentiment themes contributed the most to relative performance.

MML Small Cap Value Fund – Portfolio Manager Report (Continued)

In the third quarter of 2007, returns attributable to the Fund's investment themes were mixed, but negative overall. Management impact and earnings quality were the biggest detractors from relative returns for the quarter. On the upside, momentum, valuation and profitability contributed the most to relative performance. Among sectors, stock selection hampered the Fund's performance in the third quarter, as its holdings in the financials, energy and industrials sectors were the least successful in terms of relative performance. On the upside, stock picks in the materials, utilities and consumer discretionary sectors contributed positively to performance against the Russell 2000 Value Index. In the final three months of 2007, returns of the Fund's investment themes were once again negative. Profitability was the biggest detractor from relative returns, followed by management impact and valuation. On the upside, momentum, earnings q uality and analyst sentiment contributed positively to relative performance. From a sector perspective, stock selection hindered the Fund's progress as 2007 wound down. Its holdings in the financials, health care and information technology sectors were the least successful relative to their peers in the Russell 2000 Value Index. On the upside, Fund management's stock picks in the materials sector contributed the most to relative performance.

What is your outlook?
Looking ahead, we believe that cheaper stocks have the potential to outpace more expensive ones and good momentum stocks should do better than poor momentum stocks. We also prefer companies identified by fundamental research analysts as becoming more positive – as well as firms that are profitable, have sustainable earnings and use their capital to enhance shareholder value. As such, we expect to remain fully invested in the near term.

MML Small Cap Value Fund – Portfolio Manager Report (Continued)

MML Small Cap Value Fund

Industry Table

(% of Net Assets) on 12/31/07

Banks	8.8	%
Real Estate Investment Trusts (REITS)	7.0	%
Insurance	6.6	%
Chemicals	5.0	%
Commercial Services	4.6	%
Foods	4.4	%
Telecommunications	4.0	%
Retail	3.4	%
Oil & Gas	2.9	%
Electric	2.9	%
Internet	2.8	%
Savings & Loans	2.7	%
Transportation	2.7	%
Electronics	2.7	%
Computers	2.2	%
Health Care — Services	2.2	%
Metal Fabricate & Hardware	1.9	%
Automotive & Parts	1.6	%
Electrical Components & Equipment	1.5	%
Software	1.5	%
Manufacturing	1.4	%
Forest Products & Paper	1.3	%
Semiconductors	1.3	%
Machinery — Diversified	1.2	%
Gas	1.2	%
Oil & Gas Services	1.1	%
Agriculture	1.1	%
Investment Companies	1.0	%
Office Equipment/Supplies	0.9	%
Health Care — Products	0.9	%
Hand & Machine Tools	0.8	%
Biotechnology	0.8	%
Engineering & Construction	0.7	%
Apparel	0.7	%
Leisure Time	0.7	%
Iron & Steel	0.7	%
Diversified Financial	0.7	%
Airlines	0.6	%
Pharmaceuticals	0.6	%
Household Products	0.5	%
Media	0.5	%
Beverages	0.4	%
Trucking & Leasing	0.4	%
Machinery — Construction & Mining	0.3	%
Distribution & Wholesale	0.3	%
Packaging & Containers	0.3	%
Home Furnishing	0.2	%
Home Builders	0.2	%
Cosmetics & Personal Care	0.2	%
Aerospace & Defense	0.1	%
Pipelines	0.1	%
Environmental Controls	0.1	%
Entertainment	0.1	%
Consumer Services	0.0	%
Real Estate	0.0	%
Advertising	0.0	%
Auto Manufacturers	0.0	%
Building Materials	0.0	%
Mining	0.0	%
Energy — Alternate Sources	0.0	%
Total Long-Term Investments	92.8	%
Short-Term Investments and Other Assets and Liabilities	7.2	%
	100.0	%

MML Small Cap Value Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Aspen Insurance Holdings Ltd.	2.0	%
CF Industries Holdings, Inc.	1.6	%
Provident Financial Services, Inc.	1.5	%
First Community Bancorp	1.3	%
Platinum Underwriters Holdings Ltd.	1.2	%
Performance Food Group Co.	1.1	%
Stone Energy Corp.	1.0	%
Max Capital Group Ltd.	1.0	%
Universal Corp.	1.0	%
Fresh Del Monte Produce, Inc.	1.0	%

MML Small Cap Value Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Small Cap Value Fund and the Russell 2000 Value Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Small Cap Value Fund		(18.31	)%		(8.67	)%
Russell 2000 Value Index		(9.78	)%		(1.27	)%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 2000 Value Index is unmanaged, does not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Small Cap Index Fund – Portfolio Manager Report

What is the investment objective of the MML Small Cap Index Fund – and who is the Fund's sub-adviser?
The Fund seeks to provide investment results approximating (before fees and expenses) the aggregate price and dividend performance of the securities in the Standard & Poor's SmallCap 600^® Index (S&P SmallCap 600 Index). The Fund's sub-adviser is Northern Trust Investments, N.A. (Northern).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned -0.57%, trailing the -0.30% return of the S&P SmallCap 600 Index, a widely recognized, capitalization-weighted unmanaged index of common stocks chosen by Standard & Poor's for industry group representation, market size, liquidity, adequate float size and other trading requirements. The Index tracks the performance of the small-cap portion of the U.S. equity market. As of February 28, 2007, the approximate market capitalization range of companies included in the S&P SmallCap 600 Index was between $61 million and $3.7 billion.

What was the investment background during the period?
Overcoming a dip in the market in February, U.S. equity markets posted positive numbers for the first half of 2007, despite negative pressures surrounding subprime loan defaults, rising interest rates and geopolitical conflicts in the Middle East and Asia. The S&P 500^® Index closed at an all-time high in May. Ongoing merger and acquisition activity, takeover announcements and strong earnings reports also contributed to the markets' performance in the first quarter of 2007. On January 18, 2007, crude oil prices dropped to $51 a barrel on higher-than-expected supply news. This retreat was short-lived, as oil closed higher at the end of the second quarter, at around $70 per barrel. The Fe deral Reserve ("Fed") kept the federal funds rate unchanged at 5.25% during the second quarter of 2007.

Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Fed cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter. The fourth quarter began on a positive note, with investors still savoring the third-quarter Fed-engineered in terest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to bolster investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. In this environment, the performance of small-cap stocks lagged that of their mid-cap and large-cap counterparts.

What factors contributed to the Fund's performance?
In the first quarter of 2007, all but three of the Fund's sectors posted positive performance. The strongest-performing sectors were materials, health care and energy. The portfolio's largest sector position, industrials, advanced during this time frame. The worst-performing sector, financials, posted a negative return for the period. Turning to the second quarter of 2007, all but two sectors posted positive performance. The strongest-performing sectors were industrials, energy and information technology. Industrials was also the largest sector position, followed by information technology. The two worst-performing sectors for the second quarter were financials and utilities.

"Standard & Poor's^®", "S&P^®", "Standard & Poor's SmallCap 600" and "S&P SmallCap 600" are trademarks of The McGraw-Hill Companies, Inc. and have been licensed for use by the Fund. The Fund is not sponsored, endorsed, sold or promoted by Standard & Poor's and Standard & Poor's makes no representation regarding the advisability of investing in the Fund.

MML Small Cap Index Fund – Portfolio Manager Report (Continued)

In the third quarter of 2007, four out of the 10 sectors the Fund invests in posted positive performance. The best-performing sectors were health care and information technology. The worst-performing sectors, on the other hand, were consumer discretionary, financials and industrials. For the fourth quarter, three out of the 10 sectors posted positive performance. The best performing sectors were energy and health care. The worst performing sectors included consumer discretionary, financials and industrials, with consumer discretionary and financials providing the greatest drag on overall portfolio performance.

For full-year 2007, the energy sector was the leading contributor to the Fund's overall performance – followed by health care. On the downside, the financials and consumer discretionary sectors were the major detractors for the year, with both being affected by the subprime fallout and housing slowdown.

What is your outlook?
As we enter 2008, investors face a wide array of challenges. These include the price of oil, the subprime crisis, Fed policy and inflation, to name just a few. Despite these uncertainties, we believe that the Fund continues to be positioned to pursue returns that are consistent with those of the S&P SmallCap 600 Index.

MML Small Cap Index Fund – Portfolio Manager Report (Continued)

MML Small Cap Index Fund

Industry Table

(% of Net Assets) on 12/31/07

Retail	6.6	%
Electronics	6.1	%
Banks	5.9	%
Health Care — Products	5.0	%
Real Estate Investment Trusts (REITS)	4.5	%
Commercial Services	4.4	%
Software	4.1	%
Oil & Gas Services	3.9	%
Health Care — Services	3.4	%
Semiconductors	3.3	%
Oil & Gas	3.2	%
Gas	3.1	%
Insurance	3.0	%
Computers	2.6	%
Manufacturing	2.4	%
Aerospace & Defense	2.2	%
Foods	2.1	%
Transportation	2.1	%
Telecommunications	2.0	%
Apparel	1.9	%
Internet	1.8	%
Machinery — Diversified	1.7	%
Pharmaceuticals	1.6	%
Building Materials	1.5	%
Electric	1.5	%
Chemicals	1.3	%
Diversified Financial	1.3	%
Engineering & Construction	1.3	%
Metal Fabricate & Hardware	1.3	%
Biotechnology	1.2	%
Forest Products & Paper	0.9	%
Mining	0.9	%
Electrical Components & Equipment	0.8	%
Coal	0.7	%
Household Products	0.7	%
Leisure Time	0.7	%
Savings & Loans	0.7	%
Environmental Controls	0.6	%
Hand & Machine Tools	0.6	%
Home Builders	0.6	%
Distribution & Wholesale	0.5	%
Housewares	0.5	%
Airlines	0.4	%
Home Furnishing	0.4	%
Cosmetics & Personal Care	0.3	%
Entertainment	0.3	%
Medical Supplies	0.3	%
Textiles	0.3	%
Advertising	0.2	%
Agriculture	0.2	%
Computers & Information	0.2	%
Consumer Products	0.2	%
Machinery & Components	0.2	%
Office Furnishings	0.2	%
Real Estate	0.2	%
Toys, Games & Hobbies	0.2	%
Auto Manufacturers	0.1	%
Automotive & Parts	0.1	%
Beverages	0.1	%
Energy — Alternate Sources	0.1	%
Lodging	0.1	%
Machinery — Construction & Mining	0.1	%
Media	0.1	%
Storage & Warehousing	0.1	%
Telephone Utilities	0.1	%
Water	0.1	%
Investment Companies	0.0	%
Iron & Steel	0.0	%
Packaging & Containers	0.0	%
Total Long-Term Investments	99.1	%
Short-Term Investments and Other Assets and Liabilities	0.9	%
	100.0	%

MML Small Cap Index Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

The Shaw Group, Inc.	0.9	%
Respironics, Inc.	0.9	%
FLIR Systems, Inc.	0.8	%
Cabot Oil & Gas Corp.	0.7	%
Helix Energy Solutions Group, Inc.	0.7	%
Trimble Navigation Ltd.	0.7	%
IDEXX Laboratories, Inc.	0.7	%
Oceaneering International, Inc.	0.7	%
Southern Union Co.	0.7	%
Pediatrix Medical Group, Inc.	0.6	%

MML Small Cap Index Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Small Cap Index Fund and the S&P SmallCap 600 Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Small Cap Index Fund		(0.57	)%		0.50	%
S&P SmallCap 600 Index		(0.30	)%		1.03	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the S&P SmallCap 600 Index is unmanaged, does not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Global Fund – Portfolio Manager Report

What is the investment objective of the MML Global Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term capital appreciation by mainly investing in the securities of U.S. and foreign companies, including companies in developed and emerging industrialized markets. The Fund's sub-adviser is Neuberger Berman Management, Inc. (Neuberger Berman).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund's Class I shares returned 3.57%, lagging the 9.04% return of the Morgan Stanley Capital International, Inc. ("MSCI^®") World Index, an unmanaged index of issuers listed on the stock exchanges of 20 foreign countries and the U.S.

What was the investment background during the period?
Despite a tumultuous environment in the first quarter of 2007, most broad U.S. stock market indexes managed to turn in modest gains. International stocks continued to outpace U.S. markets in the first quarter. During this time frame, the markets in Singapore, Australia and Finland led the way – while Ireland, Hong Kong and New Zealand were among the laggards. The U.S. stock market as a whole rose substantially during second quarter of 2007, due to better-than-expected earnings releases, corporate mergers and private equity deals. The market pulled back slightly in June, however, as Treasury yields rose and subprime mortgage issues resurfaced, but performance for the quarter remained positive overall . International stocks also advanced in the second quarter, as the Nordic countries and the Pacific (excluding Japan) led the developed markets. Japan was the only developed market to post a decline.

The stock market in the U.S. endured a tumultuous third quarter in which the collapse of the mortgage and credit markets caused a broad sell-off in financial stocks. The market recovered its losses by quarter-end, however, as indications of health in the rest of the economy caused recession fears to abate, and the Federal Reserve ("Fed") cut the federal funds rate an aggressive 0.50% at the end of the period. The federal funds rate is the interest rate that banks and financial institutions charge each other for borrowing funds overnight. Markets throughout the world generally managed to finish in positive territory for the third quarter of 2007, with U.S. and international markets roughly in line after a number of central banks around the globe provided new liquidity to the financial system. In the fourth quarter of 2007, the aftershocks of the credit market upheaval in the third quarter resonated throughout U.S. equity markets a nd resulted in their delivery of dismal returns. Several Fed actions and various liquidity infusions by private equity and foreign entities during the period gave, at best, short-term sustenance to financial companies. Credit remained tight. As additional asset writedowns – the reduction of the book value of an asset because it is overvalued compared to the market value – within the financials sector cropped up and housing market deterioration persisted, the stock market continued its downward drift. The turmoil in the credit market also produced extensive volatility among global equities in the second half of 2007. International stocks declined for the fourth quarter of 2007, even as the Fed and international central banks coordinated policy to provide new liquidity to the financial system.

What factors contributed to the Fund's performance?
The U.S. equity component of the portfolio generated relatively flat returns for the first quarter of 2007. The portfolio received its largest positive contribution from its consumer staples and utilities holdings. Weakness within the financials sector was the largest single detractor from performance, as problems within the subprime mortgage market garnered headlines. Stock selection and overweight positions in Germany and Brazil contributed positively to the performance of the international component of the portfolio. On the other hand, stocks in the UK put pressure on the Fund's progress, as did certain South Korean holdings. From a sector perspective, strong international stock selection in materials, health care and information technology contributed to returns. Conversely, an overweight position in energy and stock selection in consumer staples, telecommunication services and consumer discretionary had a negative impact. In the second quarter of 2007, the domestic portion of the Fund's portfolio received the largest contribution to total return from its energy and information technology holdings. The Fund's holdings in the financials sector generated modestly positive returns, but the portfolio's substantial allocation to this lackluster segment hampered the Fund's relative performance. The international portion of the

MML Global Fund – Portfolio Manager Report (Continued)

Fund benefited from strong stock selection in telecommunications, consumer staples and materials, as well as an overweight position in energy. On a geographic basis, stock selection in Germany, France and Brazil helped drive the Fund's second-quarter performance – as did a materially underweight position in Japan. Financial stocks detracted, hurt by the rising interest rate environment in the UK and Europe.

In the U.S. portion of the portfolio, performance in the third quarter of 2007 was partly driven by a sizeable energy allocation. Other meaningful contributors included the Fund's information technology, consumer staples, materials and industrials sector holdings. The consumer discretionary sector detracted from performance, as did the Fund's holdings in the financials sector. In the international component, stock selection in the industrials sectors hampered returns. In contrast, stock selection and the portfolio's overweight position in energy was a major contributor to performance. From a country perspective, Brazil was the top contributor. Turning to the final three months of 2007, the U.S. equity component of the portfolio declined. The portfolio's energy holdings, however, provided some relief from the slide, due to a rise in crude oil prices of over 50%. Financials was the largest detractor from the Fund's performance in t he fourth quarter, though an underweight position in the segment mitigated losses on a relative basis. In the international component, the portfolio's consumer discretionary investments trailed, as credit markets worldwide seized up. The industrials and financials sectors of the portfolio also underperformed. Despite the international component's overall weak fourth-quarter performance, there were a number of areas that did well. For example, the Fund benefited from strong stock selection in the materials sector.

What is your outlook?
Our view is that in 2008, we may see investors who favor businesses with strong management, strong financials and strong earnings growth. In our opinion, companies with sound fundamentals provide greater appreciation potential, but also have the potential to demonstrate greater resilience when the global economy slows.

MML Global Fund – Portfolio Manager Report (Continued)

MML Global Fund

Country Weightings

(% of Net Assets) on 12/31/07

United States	43.8	%
United Kingdom	8.5	%
Japan	7.0	%
Canada	6.2	%
Germany	6.0	%
France	3.9	%
Brazil	3.5	%
Belgium	3.1	%
Ireland	2.9	%
Australia	1.9	%
South Korea	1.4	%
Bermuda	1.4	%
Norway	1.3	%
Switzerland	1.2	%
Italy	1.1	%
Holland	1.0	%
Austria	0.5	%
Luxembourg	0.5	%
Greece	0.3	%
Spain	0.2	%
Sweden	0.1	%
Total Long-Term Investments	95.8	%
Short-Term Investments and Other Assets and Liabilities	4.2	%
	100.0	%

MML Global Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Exxon Mobil Corp.	2.2	%
Occidental Petroleum Corp.	1.9	%
Petroleo Brasileiro SA Sponsored ADR (Brazil)	1.4	%
Vodafone Group PLC	1.4	%
Wacker Chemie AG	1.4	%
General Electric Co.	1.3	%
Vallourec SA	1.2	%
CRH PLC (London)	1.2	%
Canadian Natural Resources Ltd.	1.2	%
Suncor Energy, Inc.	1.2	%

MML Global Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Global Fund Class I, Class II, and the MSCI World Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Global Fund Class I		3.57	%		5.89	%
MML Global Fund Class II		3.75	%		6.04	%
MSCI World Index		9.04	%		11.11	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the MSCI World Index is unmanaged, does not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Foreign Fund – Portfolio Manager Report

What is the investment objective of the MML Foreign Fund – and who is the Fund's sub-adviser?
The Fund seeks long-term capital growth by investing, under normal conditions, at least 80% of its net assets in investments of issuers located outside the U.S., including those in emerging markets. The Fund's sub-adviser is Templeton Investment Counsel, LLC (Templeton).

How did the Fund perform during the 12 months ended December 31, 2007?
The Fund returned 13.48%, outperforming the 11.17% return of the Morgan Stanley Capital International, Inc. Europe, Australasia, Far East ("MSCI^® EAFE^®") Index, a widely recognized, unmanaged index representative of foreign securities in the major non-U.S. markets of Europe, Australia and the Far East.

What was the investment background during the period?
In spite of elevated energy prices, higher global interest rates, a weaker U.S. housing market and restrained U.S. economic growth, the global economy remained resilient throughout the six-month period ended June 30, 2007. The mood in the global equity markets was predominantly positive, but was interrupted in the first quarter of 2007 due to concerns of slower economic growth. Toward the end of the first half of 2007, a bond market sell-off drove yields up on longer-term Treasuries, reflecting expectations of a pick-up in inflation later in the year. Outside the U.S., economic growth remained solid, particularly in Europe and the emerging markets. Most global equity markets ended the six-month period wi th double-digit total returns.

Global market conditions deteriorated in the third quarter of 2007, as a worsening global credit crunch, triggered by the U.S. subprime mortgage crisis, prompted the European Central Bank, the U.S. Federal Reserve ("Fed") and other central banks to cut short-term borrowing rates for banks. The rate cuts had a calming effect on financial markets and the overall global economy and, together with a larger-than-expected Fed interest rate cut in September, fueled a broad-based stock market rebound. Major Asian and Latin American equity indexes outperformed their U.S. and European counterparts, while emerging markets outperformed developed markets during the third quarter. Despite the credit market instability, overall global economic fundamentals remained solid. Global financial markets were unsettled once again in the fourth quarter of 2007. Uncertainty surrounding the full impact of the U.S. subprime mortgage crisis fueled a high degree of mark et volatility. During the quarter, major Latin American equity indexes outperformed their counterparts around the world as Asian, European and U.S. indexes lost ground, and emerging markets generally outperformed developed markets.

What factors contributed to the Fund's performance?
For the six-month period ended June 30, 2007, the Fund's performance relative to the MSCI EAFE Index benefited most from stock selection in the consumer discretionary sector. The Fund's utilities and health care sector investments also boosted relative performance due to stock selection. The U.S. dollar depreciated versus most foreign currencies for the period, which also contributed to the Fund's performance, because investments in securities with non-U.S. currency exposure gained value as the dollar weakened. Despite the Fund's positive results, there were some disappointments in the first half of 2007. Stock selection in the financials sector and an underweight position in the strong-performing material s sector hindered results relative to the benchmark during the first half of 2007.

Turning to the third quarter of 2007, the portfolio benefited from exposure to several Asian markets, while stock selection within European markets generally proved detrimental to performance. Overweight allocations to China and Singapore plus exposure to South Korea (a non-benchmark country) enhanced results due to solid performance in these markets. An underweight allocation to Japan boosted the Fund's relative performance, and exposure to Brazil further strengthened returns. Conversely, stock selection in Germany, the United Kingdom, Finland, the Netherlands and Norway hindered performance. Stock selection in Spain and France countered otherwise weak results from European investments and had a positive impact. On a sector basis, the portfolio benefited primarily from the telecommunications services sector, as both its overweighted allocation and positive stock selection supported results. An underweight position in financials proved favo rable, as this sector struggled during the period. During the fourth quarter of 2007, the Fund benefited from its stock

MML Foreign Fund – Portfolio Manager Report (Continued)

selection in Europe, particularly its exposure to the robust Russian market and healthy gains in many of its holdings in Denmark and France. In Asia, an underweight position in the struggling Japanese market supported relative performance, as did the Fund's exposure to Taiwan (which is not represented in the benchmark) and its stock selection in China. In contrast, relative returns suffered from stock selection in other European markets, including Finland and Germany, as well as from weakness in the Fund's South Korean, Canadian and Israeli holdings. On a sector basis, the Fund's overweight exposure and security selection in the telecommunications services sector supported results. Conversely, relative performance was hindered by the Fund's underweight position and stock selection in the consumer staples sector. Other negative factors included an underweight position in the strong-performing utilities sector and disappointing stock selection in the information technology sector.

What is your outlook?
Despite generally positive economic and financial market fundamentals, we caution that in 2008, we could see a period of consolidation following the strong returns posted by global markets in recent years.

MML Foreign Fund – Portfolio Manager Report (Continued)

MML Foreign Fund

Country Weightings

(% of Net Assets) on 12/31/07

United Kingdom	22.9	%
France	10.2	%
Germany	9.9	%
Japan	6.6	%
Spain	4.6	%
Switzerland	4.5	%
Italy	4.4	%
South Korea	4.4	%
Netherlands	3.2	%
Taiwan	2.5	%
Singapore	2.4	%
Norway	2.0	%
Bermuda	1.8	%
Holland	1.6	%
Hong Kong	1.5	%
Brazil	1.5	%
Finland	1.4	%
Austria	1.2	%
South Africa	1.1	%
Denmark	1.1	%
China	1.1	%
Russia	1.1	%
United States	1.1	%
Sweden	0.9	%
Canada	0.7	%
Mexico	0.6	%
Australia	0.6	%
Total Long-Term Investments	94.9	%
Short-Term Investments and Other Assets and Liabilities	5.1	%
	100.0	%

MML Foreign Fund

Ten Largest Stock Holdings

(% of Net Assets) on 12/31/07

Telefonica SA Sponsored ADR (Spain)	2.1	%
Siemens AG	1.9	%
E.ON AG	1.7	%
Telenor ASA	1.7	%
Royal Dutch Shell PLC	1.7	%
France Telecom SA	1.6	%
Total SA	1.6	%
Vodafone Group PLC Sponsored ADR (United Kingdom)	1.5	%
Unilever PLC	1.5	%
Samsung Electronics Co., Ltd.	1.5	%

MML Foreign Fund – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Foreign Fund and the MSCI EAFE Index.

MML Series Investment Fund
Total Returns

	_{One Year}_{1/1/07 - 12/31/07}			_{Since Inception}_{Average Annual}_{5/1/06 - 12/31/07}
MML Foreign Fund		13.48	%		14.97	%
MSCI EAFE Index		11.17	%		12.97	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the MSCI EAFE Index is unmanaged, does not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Allocation Fund Series – Portfolio Manager Report

What are the investment objectives of the Funds that comprise the MML Allocation Fund Series?
Each Fund in the series – the MML Conservative Allocation Fund, MML Balanced Allocation Fund, MML Moderate Allocation Fund, MML Growth Allocation Fund and MML Aggressive Allocation Fund – has the following investment objective: seeks to achieve as high a total rate of return on an annual basis as is considered consistent with prudent investment risk and the preservation of capital.

Assets are allocated among underlying funds according to an asset allocation strategy of approximately 40% in equity funds and 60% in fixed-income funds, including money market funds for the MML Conservative Allocation Fund; 50% in equity funds and 50% in fixed-income funds, including money market funds for the MML Balanced Allocation Fund; 60% in equity funds and 40% in fixed-income funds, including money market funds for the MML Moderate Allocation Fund; 75% in equity funds and 25% in fixed-income funds, including money market funds for the MML Growth Allocation Fund; and 90% in equity funds and 10% in fixed-income funds, including money market funds for the MML Aggressive Allocation Fund.

How did each Fund perform during since the Funds' inception on August 31, 2007?
For the four months ended December 31, 2007, each Fund's return is shown below. Also shown are the returns of the Lehman Brothers^® Aggregate Bond Index, an unmanaged index of fixed-rate investment-grade securities with at least one year to maturity combining the Lehman Brothers Government/Credit Index and the Lehman Brothers Mortgage-Backed Securities Index; the Russell 3000^® Index, which measures the performance of the 3,000 largest U.S. companies based on total market capitalization; and the Morgan Stanley Capital International ("MSCI^®") World Ex-US Index, an unmanaged index representative of stocks domiciled in global developed mar kets, excluding the United States.

MML Conservative Allocation Fund			Custom Benchmark			Lehman Brothers Aggregate Bond Index			Russell 3000 Index			MSCI World Ex-US Index
	3.09	%		3.14	%		3.60	%		1.37	%		5.61	%
	MML Balanced Allocation Fund
	2.96	%		3.03	%		3.60	%		1.37	%		5.61	%
	MML Moderate Allocation Fund
	2.63	%		2.92	%		3.60	%		1.37	%		5.61	%
	MML Growth Allocation Fund
	2.45	%		2.75	%		3.60	%		1.37	%		5.61	%
	MML Aggressive Allocation Fund
	2.15	%		2.57	%		3.60	%		1.37	%		5.61	%

All of the MML Allocation Funds underperformed their respective custom benchmarks for the four-month period ended December 31, 2007. Each of the five MML Allocation Funds outpaced the Russell 3000 Index. Conversely, all of the MML Allocation Funds trailed both the Lehman Brothers Aggregate Bond Index and the MSCI World Ex-US Index for the four-month time frame.

MML Allocation Fund Custom Benchmarks

• The Custom MML Conservative Allocation Index comprises the Lehman Brothers Aggregate Bond Index, the Russell 3000 Index and the MSCI World Ex-US Index. The weightings of each Index can vary, depending on the weightings of the underlying mutual funds that comprise the MML Conservative Allocation Fund.

• The Custom MML Balanced Allocation Index comprises the Lehman Brothers Aggregate Bond Index, the Russell 3000 Index and the MSCI World Ex-US Index. The weightings of each Index can vary, depending on the weightings of the underlying mutual funds that comprise the MML Balanced Allocation Fund.

MML Allocation Fund Series – Portfolio Manager Report (Continued)

• The Custom MML Moderate Allocation Index comprises Lehman Brothers Aggregate Bond Index, the Russell 3000 Index and the MSCI World Ex-US Index. The weightings of each Index can vary, depending on the weightings of the underlying mutual funds that comprise the MML Moderate Allocation Fund.

• The Custom MML Growth Allocation Index comprises the Lehman Brothers Aggregate Bond Index, the Russell 3000 Index and the MSCI World Ex-US Index. The weightings of each Index can vary, depending on the weightings of the underlying mutual funds that comprise the MML Growth Allocation Fund.

• The Custom MML Aggressive Allocation Index comprises the Lehman Brothers Aggregate Bond Index, the Russell 3000 Index and the MSCI World Ex-US. Index. The weightings of each Index can vary, depending on the weightings of the underlying mutual funds that comprise the MML Aggressive Allocation Fund.

What was the investment background during the period?
Most categories of domestic stocks finished the third quarter of 2007 higher, despite significant market volatility caused by the escalating subprime mortgage crisis. In August, the Federal Reserve ("Fed") cut the discount rate – the interest rate that regional Fed banks charge banks and other financial institutions when they borrow funds on a short-term basis – by 0.50%. After some negative movement in key economic indicators, the Fed lowered the closely watched target federal funds rate by 0.50% to 4.75%, simultaneously cutting the discount rate an additional 0.50% at its September 18 meeting. The federal funds rate is the interest rate that banks and other financial institutions charge each other for borrowing funds overnight. As a result, most broad-based U.S. stock indexes were trading near their all-time highs at the end of the quarter, and foreign stocks advanced. In the bond marketplace, growing concerns about a weakening economy triggered a decline in bond yields and boosted prices, helping the Lehman Brothers Aggregate Bond Index advance for the quarter. Bond prices move in the opposite direction of interest rates (or yields); when yields rise, the prices of existing bonds fall – and vice versa.

The fourth quarter began on a positive note, with investors still savoring the third-quarter Fed-engineered interest rate cuts. The Fed's fourth-quarter interest rate reductions (which totaled an additional 0.50% each from both the federal funds and discount rates) failed to help investor confidence in the face of inflationary pressures, lackluster holiday retail sales and news detailing the ongoing impact of subprime exposure on large financial companies. U.S. equities traded lower, as ongoing weakness in the housing market, escalating subprime concerns and crude oil prices that approached $100 per barrel undermined investor confidence. Foreign stocks were not immune during this difficult period, as the MSCI World Ex-US Index returned -1.62% for the fourth quarter. In this environment, higher-quality bonds performed well amid growing concerns about a slowing economy and even a possible recession in the United States. In the end, the Lehman Brothers Aggregate Bond Index advanced 3.00% for the quarter.

What factors contributed to the Funds' performance?
Since their inception on August 31, 2007, the Funds have benefited from exposure to international bonds and Treasury inflation-protected securities ("TIPS"). In addition, the Funds' exposure to a high-quality investment-grade portfolio helped to shield them somewhat from the turmoil in the credit markets caused by the subprime mortgage crisis.

On the equity side, a couple of factors helped the Funds' performance, including a well-diversified blend of managers with exposure to U.S. large-cap and international equities and underweight exposure to U.S. small-cap value equities. Conversely, successfully navigating the financials and consumer sectors posed the biggest challenge for Fund management in the second half of 2007.

What is your outlook?
Numerous forces will continue to influence the direction that the market takes throughout 2008. These include the price of oil, the subprime crisis and its impact on housing in particular and the U.S. economy in general, Fed policy and inflation, to name just a few. Despite these uncertainties, we believe that adhering to our goal for the MML Allocation Funds – to manage a graduated risk profile of portfolios that is appropriate for investors seeking a diversified portfolio across market sectors, market capitalizations, styles and managers – will help the Fund successfully withstand any challenges that investors may face in the coming months.

MML Allocation Fund Series – Portfolio Manager Report (Continued)

MML Conservative Allocation Fund

Asset Allocation

(% of Net Assets) on 12/31/07

Equity Funds	39.4	%
Fixed Income Funds	60.6	%
Total Long-Term Investments	100.0	%
Short-Term Investments and Other Assets and Liabilities	(0.0	)%
	100.0	%

MML Balanced Allocation Fund

Asset Allocation

(% of Net Assets) on 12/31/07

Equity Funds	49.3	%
Fixed Income Funds	50.7	%
Total Long-Term Investments	100.0	%
Short-Term Investments and Other Assets and Liabilities	(0.0	)%
	100.0	%

MML Moderate Allocation Fund

Asset Allocation

(% of Net Assets) on 12/31/07

Equity Funds	59.4	%
Fixed Income Funds	40.6	%
Total Long-Term Investments	100.0	%
Short-Term Investments and Other Assets and Liabilities	(0.0	)%
	100.0	%

MML Growth Allocation Fund

Asset Allocation

(% of Net Assets) on 12/31/07

Equity Funds	74.5	%
Fixed Income Funds	25.5	%
Total Long-Term Investments	100.0	%
Short-Term Investments and Other Assets and Liabilities	(0.0	)%
	100.0	%

MML Aggressive Allocation Fund

Asset Allocation

(% of Net Assets) on 12/31/07

Equity Funds	89.8	%
Fixed Income Funds	10.2	%
Total Long-Term Investments	100.0	%
Short-Term Investments and Other Assets and Liabilities	(0.0	)%
	100.0	%

MML Allocation Fund Series – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Conservative Allocation Fund, the Lehman Brothers Aggregate Bond Index, the Russell 3000 Index, the MSCI World Ex-US Index and the Custom MML Conservative Index.

MML Series Investment Fund
Total Returns

	_{Since Inception}_{8/31/07 - 12/31/07}
MML Conservative Allocation Fund		3.09	%
Lehman Brothers Aggregate Bond Index		3.60	%
Russell 3000 Index		1.37	%
MSCI World Ex-US Index		5.61	%
Custom MML Conservative Index		3.14	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Lehman Brothers Aggregate Bond Index, the Russell 3000 Index, the MSCI World Ex-US Index and the Custom MML Conservative Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Allocation Fund Series – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Balanced Allocation Fund, the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Balanced Index.

MML Series Investment Fund
Total Returns

	_{Since Inception}_{8/31/07 - 12/31/07}
MML Balanced Allocation Fund		2.96	%
Russell 3000 Index		1.37	%
Lehman Brothers Aggregate Bond Index		3.60	%
MSCI World Ex-US Index		5.61	%
Custom MML Balanced Index		3.03	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Balanced Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Allocation Fund Series – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Moderate Allocation Fund, the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Moderate Index.

MML Series Investment Fund
Total Returns

	_{Since Inception}_{8/31/07 - 12/31/07}
MML Moderate Allocation Fund		2.63	%
Russell 3000 Index		1.37	%
Lehman Brothers Aggregate Bond Index		3.60	%
MSCI World Ex-US Index		5.61	%
Custom MML Moderate Index		2.92	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Moderate Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Allocation Fund Series – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Growth Allocation Fund, the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Growth Index.

MML Series Investment Fund
Total Returns

	_{Since Inception}_{8/31/07 - 12/31/07}
MML Growth Allocation Fund		2.45	%
Russell 3000 Index		1.37	%
Lehman Brothers Aggregate Bond Index		3.60	%
MSCI World Ex-US Index		5.61	%
Custom MML Growth Index		2.75	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Growth Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Allocation Fund Series – Portfolio Manager Report (Continued)

Growth of a $10,000 Investment

Hypothetical Investments in MML Aggressive Allocation Fund, the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Aggressive Index.

MML Series Investment Fund
Total Returns

	_{Since Inception}_{8/31/07 - 12/31/07}
MML Aggressive Allocation Fund		2.15	%
Russell 3000 Index		1.37	%
Lehman Brothers Aggregate Bond Index		3.60	%
MSCI World Ex-US Index		5.61	%
Custom MML Aggressive Index		2.57	%

GROWTH OF $10,000 INVESTMENT SINCE INCEPTION

Investors should note that the Fund is a professionally managed mutual fund, while the Russell 3000 Index, the Lehman Brothers Aggregate Bond Index, the MSCI World Ex-US Index and the Custom MML Aggressive Index are unmanaged, do not incur expenses, and cannot be purchased directly by investors. Investors should read the Fund's prospectus with regard to the Fund's investment objective, risks and charges and expenses in conjunction with these financial statements. The Fund's return reflects changes in the net asset value per share without the deduction of any product charges. The inclusion of these charges would have reduced the performance shown here.

MML Asset Allocation Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 67.5%
COMMON STOCK — 67.0%
Advertising — 0.2%
Omnicom Group, Inc.		9,000	$	427,770
Aerospace & Defense — 1.2%
Boeing Co.		16,500		1,443,090
United Technologies Corp.		21,400		1,637,956
				3,081,046
Agriculture — 0.8%
Altria Group, Inc.		27,600		2,086,008
Airlines — 0.1%
Southwest Airlines Co.		24,800		302,560
Auto Manufacturers — 0.5%
Ford Motor Co.(a) (b)		141,300		950,949
General Motors Corp.(b)		17,500		435,575
				1,386,524
Automotive & Parts — 0.2%
Johnson Controls, Inc.		14,600		526,184
Banks — 2.3%
Capital One Financial Corp.		11,500		543,490
Fifth Third Bancorp		19,600		492,548
SunTrust Banks, Inc.		9,400		587,406
Wachovia Corp.		77,426		2,944,511
Wells Fargo & Co.		44,500		1,343,455
				5,911,410
Beverages — 1.5%
Anheuser-Busch Cos., Inc.		6,400		334,976
The Coca-Cola Co.		18,000		1,104,660
PepsiCo, Inc.		29,900		2,269,410
				3,709,046
Biotechnology — 1.6%
Genentech, Inc.(a)		50,300		3,373,621
Millennium Pharmaceuticals, Inc.(a)		55,800		835,884
				4,209,505
Building Materials — 0.1%
Owens Corning, Inc.(a) (b)		11,800		238,596
Chemicals — 1.3%
Celanese Corp. Cl. A		9,300		393,576
Monsanto Co.		6,200		692,478
Potash Corp. of Saskatchewan		15,100		2,173,796
				3,259,850

	Number of Shares		Market Value
Coal — 0.4%
Arch Coal, Inc.		10,500	$	471,765
Peabody Energy Corp.		10,200		628,728
				1,100,493
Commercial Services — 0.3%
Monster Worldwide, Inc.(a)		7,700		249,480
Moody's Corp.		12,400		442,680
				692,160
Computers — 2.6%
Affiliated Computer Services, Inc. Cl. A(a)		9,200		414,920
Apple, Inc.(a)		2,600		515,008
Brocade Communications Systems, Inc.(a)		75,300		552,702
Cognizant Technology Solutions Corp. Cl. A(a) (b)		8,400		285,096
Dell, Inc.(a)		27,900		683,829
Hewlett-Packard Co.		10,400		524,992
Network Appliance, Inc.(a)		7,500		187,200
Qimonda AG ADR (Germany)(a)		34,800		248,820
SanDisk Corp.(a)		57,700		1,913,909
Seagate Technology		32,200		821,100
Sun Microsystems, Inc.(a)		26,575		481,805
				6,629,381
Cosmetics & Personal Care — 0.2%
Avon Products, Inc.		7,400		292,522
The Estee Lauder Cos., Inc. Cl. A		4,713		205,534
				498,056
Diversified Financial — 4.6%
AmeriCredit Corp.(a) (b)		17,000		217,430
Fannie Mae		29,600		1,183,408
Freddie Mac		28,900		984,623
The Goldman Sachs Group, Inc.		12,400		2,666,620
IndyMac Bancorp, Inc.(b)		35,100		208,845
JP Morgan Chase & Co.		84,700		3,697,155
Lehman Brothers Holdings, Inc.		19,900		1,302,256
SLM Corp.(b)		69,600		1,401,744
				11,662,081

	Number of Shares		Market Value
Electric — 1.2%
AES Corp.(a)		17,800	$	380,742
Allegheny Energy, Inc.		7,300		464,353
CMS Energy Corp.		32,300		561,374
Edison International		20,100		1,072,737
Pinnacle West Capital Corp.		11,500		487,715
				2,966,921
Electrical Components & Equipment — 0.4%
Emerson Electric Co.		10,400		589,264
Energizer Holdings, Inc.(a)		4,500		504,585
				1,093,849
Electronics — 0.8%
Agilent Technologies, Inc.(a)		14,600		536,404
Flextronics International Ltd.(a)		44,800		540,288
Jabil Circuit, Inc.		61,100		932,997
				2,009,689
Engineering & Construction — 0.8%
Fluor Corp.		14,400		2,098,368
Foods — 1.8%
Campbell Soup Co.		13,600		485,928
General Mills, Inc.		5,400		307,800
Kraft Foods, Inc. Cl. A		52,244		1,704,722
Sara Lee Corp.		77,900		1,251,074
Unilever NV NY Shares (Netherlands)		22,500		820,350
				4,569,874
Health Care – Products — 1.5%
Baxter International, Inc.		41,400		2,403,270
Medtronic, Inc.		29,000		1,457,830
				3,861,100
Health Care – Services — 2.0%
DaVita, Inc.(a)		20,100		1,132,635
UnitedHealth Group, Inc.		66,800		3,887,760
				5,020,395
Home Builders — 0.1%
Lennar Corp. Cl. A(b)		9,400		168,166
Household Products — 0.2%
Fortune Brands, Inc.		4,900		354,564
Jarden Corp.(a)		8,100		191,241
				545,805

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Insurance — 3.0%
AFLAC, Inc.		11,300	$	707,719
Ambac Financial Group, Inc.(b)		27,500		708,675
American International Group, Inc.		40,200		2,343,660
Berkshire Hathaway, Inc. Cl. A(a)		10		1,274,400
Marsh & McLennan Cos., Inc.		38,000		1,005,860
MBIA, Inc.(b)		36,000		670,680
Progressive Corp.		21,900		419,604
XL Capital Ltd. Cl. A		10,900		548,379
				7,678,977
Internet — 3.4%
eBay, Inc.(a)		68,600		2,276,834
Google, Inc. Cl. A(a)		7,300		5,047,804
Yahoo!, Inc.(a)		58,400		1,358,384
				8,683,022
Investment Companies — 0.2%
American Capital Strategies Ltd.(b)		15,000		494,400
Iron & Steel — 0.2%
Allegheny Technologies, Inc.		2,600		224,640
Cleveland-Cliffs, Inc.		2,100		211,680
				436,320
Leisure Time — 0.1%
Carnival Corp.		6,200		275,838
Lodging — 0.6%
Las Vegas Sands Corp.(a) (b)		11,000		1,133,550
Starwood Hotels & Resorts Worldwide, Inc.		7,200		317,016
				1,450,566
Manufacturing — 3.1%
Cooper Industries Ltd. Cl. A		11,200		592,256
Danaher Corp.		13,300		1,166,942
General Electric Co.		108,300		4,014,681
Illinois Tool Works, Inc.		27,900		1,493,766
Siemens AG Sponsored ADR (Germany)		3,100		487,816
Tyco International Ltd.		7,000		277,550
				8,033,011
Media — 1.8%
CBS Corp. Cl. B		31,700		863,825
Comcast Corp. Cl. A(a)		16,650		304,029
Gannett Co., Inc.		12,000		468,000

	Number of Shares		Market Value
Time Warner Cable, Inc. Cl. A(a)		15,400	$	425,040
Time Warner, Inc.		25,700		424,307
Viacom, Inc. Cl. B(a)		9,500		417,240
The Walt Disney Co.		55,200		1,781,856
				4,684,297
Mining — 1.2%
Barrick Gold Corp.		49,700		2,089,885
Freeport-McMoran Copper & Gold, Inc.		4,900		501,956
Newmont Mining Corp.		11,900		581,077
				3,172,918
Oil & Gas — 2.9%
Anadarko Petroleum Corp.		8,400		551,796
Chevron Corp.		8,000		746,640
ConocoPhillips		9,900		874,170
EOG Resources, Inc.		4,200		374,850
Exxon Mobil Corp.		17,200		1,611,468
Royal Dutch Shell PLC Sponsored ADR (United Kingdom)		37,800		3,182,760
				7,341,684
Oil & Gas Services — 2.4%
Baker Hughes, Inc.		12,600		1,021,860
BJ Services Co.		44,400		1,077,144
Schlumberger Ltd.		26,700		2,626,479
Weatherford International Ltd.(a)		19,600		1,344,560
				6,070,043
Pharmaceuticals — 5.0%
Abbott Laboratories		13,600		763,640
Allergan, Inc.		20,800		1,336,192
AstraZeneca PLC Sponsored ADR (United Kingdom)		46,000		1,969,720
Bristol-Myers Squibb Co.		33,200		880,464
Forest Laboratories, Inc.(a)		49,200		1,793,340
ImClone Systems, Inc.(a)		30,900		1,328,700
Pfizer, Inc.		40,300		916,019
Sanofi-Aventis Sponsored ADR (France)		35,300		1,607,209
Sepracor, Inc.(a)		25,500		669,375
Teva Pharmaceutical Sponsored ADR (Israel)		23,200		1,078,336
Wyeth		11,000		486,090
				12,829,085

	Number of Shares		Market Value
Real Estate Investment Trusts (REITS) — 0.1%
Douglas Emmett, Inc. REIT		10,500	$	237,405
Host Hotels & Resorts, Inc. REIT(b)		8,700		148,248
				385,653
Retail — 4.7%
Best Buy Co., Inc.		38,800		2,042,820
Coach, Inc.(a)		7,400		226,292
Costco Wholesale Corp.		8,100		565,056
Hanesbrands, Inc.(a)		30,750		835,477
The Home Depot, Inc.		24,600		662,724
Lowe's Companies, Inc.		98,100		2,219,022
McDonald's Corp.		9,900		583,209
Nordstrom, Inc.		11,400		418,722
Starbucks Corp.(a)		16,700		341,849
Target Corp.		61,500		3,075,000
Urban Outfitters, Inc.(a) (b)		22,900		624,254
Walgreen Co.		9,200		350,336
				11,944,761
Savings & Loans — 0.9%
Hudson City Bancorp, Inc.		81,300		1,221,126
Washington Mutual, Inc.(b)		79,800		1,086,078
				2,307,204
Semiconductors — 3.4%
Altera Corp.		53,300		1,029,756
Applied Materials, Inc.		117,600		2,088,576
ASML Holding NV(a) (b)		10,433		326,449
Intel Corp.		35,600		949,096
KLA-Tencor Corp.		41,200		1,984,192
Lam Research Corp.(a)		9,200		397,716
Linear Technology Corp.(b)		10,500		334,215
Micron Technology, Inc.(a)		147,500		1,069,375
Silicon Laboratories, Inc.(a)		3,200		119,776
Xilinx, Inc.		11,900		260,253
				8,559,404
Software — 2.0%
Cerner Corp.(a) (b)		8,100		456,840
Microsoft Corp.		74,700		2,659,320
Oracle Corp.(a)		27,200		614,176
Paychex, Inc.		12,700		459,994
SAP AG Sponsored ADR (Germany)(b)		7,900		403,295
VeriFone Holdings, Inc.(a) (b)		19,500		453,375
				5,047,000

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Telecommunications — 3.9%
American Tower Corp. Cl. A(a)		15,200	$	647,520
AT&T, Inc.		42,700		1,774,612
Ciena Corp.(a) (b)		5,900		201,249
Cisco Systems, Inc.(a)		94,100		2,547,287
Corning, Inc.		16,000		383,840
Level 3 Communications, Inc.(a) (b)		131,900		400,976
Polycom, Inc.(a)		14,400		400,032
Qualcomm, Inc.		50,500		1,987,175
Time Warner Telecom, Inc. Cl. A(a)		58,700		1,191,023
Verizon Communications, Inc.		9,400		410,686
				9,944,400
Transportation — 1.4%
FedEx Corp.		7,300		650,941
United Parcel Service, Inc. Cl. B		40,100		2,835,872
				3,486,813
TOTAL COMMON STOCK (Cost $171,815,458)				170,880,233
PREFERRED STOCK — 0.5%
Diversified Financial — 0.0%
SLM Corp. Preferred, Convertible		100		100,000
Pharmaceuticals — 0.1%
Schering-Plough Corp. Preferred, Convertible		1,500		363,937
Savings & Loans — 0.3%
Washington Mutual, Inc. Preferred, Convertible(b)		830		734,550
U.S. Government Agencies — 0.1%
Freddie Mac Preferred		4,700		122,905
TOTAL PREFERRED STOCK (Cost $1,408,438)				1,321,392
TOTAL EQUITIES (Cost $173,223,896)				172,201,625
	Principal Amount
BONDS & NOTES — 30.7%
ASSET BACKED SECURITIES — 1.7%
Airlines — 0.1%
Delta Air Lines, Inc., Series 2002-1, Class G2 6.417% 07/02/2012	$	125,000		127,812

	Principal Amount		Market Value
Automobile ABS — 0.8%
AmeriCredit Automobile Receivables Trust, Series 2007-CM, Class A4A 5.550% 04/07/2014	$	50,000	$	50,501
AmeriCredit Automobile Receivables Trust, Series 2007-DF, Class A4A 5.560% 06/06/2014		50,000		50,299
Carmax Auto Owner Trust, Series 2007-2, Class A3 5.230% 12/15/2011		50,000		50,518
CPS Auto Trust, Series 2006-C, Class A4 (Acquired 9/22/06, Cost $349,899)(c) (i) 5.140% 06/17/2013		349,999		351,605
CPS Auto Trust, Series 2007-A, Class A4 (Acquired 3/22/07, Cost $324,919)(c) (i) 5.050% 11/15/2013		325,000		326,628
CPS Auto Trust, Series 2007-TFC, Class A2 (Acquired 5/2/07, Cost $174,969)(c) (i) 5.250% 12/16/2013		174,999		174,561
Drive Auto Receivables Trust, Series 2006-2, Class A3 (Acquired 10/18/06, Cost $174,998)(c) (i) 5.330% 04/15/2014		175,000		172,184
Prestige Auto Receivables Trust, Series 2005-1A, Class A2. (Acquired 5/23/06, Cost $982,461)(c) (i) 4.370% 06/15/2012		631,482		627,536
Rental Car Finance Corp., Series 2005-1A, Class A2 (Acquired 5/22/06, Cost $241,670)(c) (i) 4.590% 06/25/2011		250,000		248,086
				2,051,918

	Principal Amount		Market Value
Commercial MBS — 0.1%
Crown Castle Towers LLC, Series 2006-1A, Class E (Acquired 11/15/06, Cost $290,000)(c) (i) 6.065% 11/15/2036	$	290,000	$	238,975
Credit Card ABS — 0.6%
Advanta Business Card Master Trust, Series 2005-A2, Class A2 FRN 5.079% 05/20/2013		500,000		498,125
MBNA Credit Card Master Note Trust, Series 2002-1C, Class C 6.800% 07/15/2014		1,000,000		1,021,250
				1,519,375
Home Equity ABS — 0.1%
Countrywide Asset-Backed Certificates, Series 2006-S6, Class A6 5.657% 03/25/2034		175,000		151,272
Residential Funding Mortgage Securities II, Inc., Series 2007-HSA3, Class 1A3 6.030% 05/25/2037		175,000		163,166
				314,438
Other ABS — 0.0%
Credit-Based Asset Servicing and Securitization LLC, Series 2007-CB4, Class B1 6.870% 04/25/2037		75,000		13,165
TOTAL ASSET BACKED SECURITIES (Cost $4,428,072)				4,265,683
CORPORATE DEBT — 8.7%
Advertising — 0.1%
RH Donnelley Corp. 6.875% 01/15/2013		350,000		313,250

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Auto Manufacturers — 0.2%
Ford Motor Co. 4.250% 12/15/2036	$	442,000	$	439,238
Ford Motor Co. 7.450% 07/16/2031		50,000		37,125
				476,363
Banks — 1.1%
Bac Capital Trust XIII FRN 5.391% 03/15/2012		330,000		276,460
Banco Mercantile Del Nort VRN (Acquired 10/5/06, Cost $160,000)(c) (i) 6.862% 10/13/2021		160,000		157,424
Barclays Bank PLC FRN (Acquired 6/26/07, Cost $131,851)(c) (i) 6.860% 06/15/2049		130,000		121,244
Barclays Bank PLC FRN (Acquired 9/20/07 - 9/21/07, Cost $304,391)(c) (i) 7.434% 12/15/2017		300,000		311,745
Chuo Mitsui Trust & Banking Co. Ltd. (The) VRN (Acquired 5/2/06, Cost $169,578)(c) (i) 5.506% 04/15/2015		180,000		165,508
CoBank ACB FRN (Acquired 6/6/07, Cost $250,000)(c) (i) 5.591% 06/15/2022		195,000		188,393
HSBK Europe BV (Acquired 4/25/07, Cost $188,419)(c) (i) 7.250% 05/03/2017		190,000		180,334
HSBK Europe BV (Acquired 5/22/06, Cost $101,125)(c) (i) 7.750% 05/13/2013		100,000		95,000
Kazkommerts International BV, Reg S 8.000% 11/03/2015		100,000		81,980
Royal Bank of Scotland Group PLC VRN (Acquired 9/27/07 - 10/5/07, Cost $204,963)(c) (i) 6.990% 10/05/2017		200,000		199,398

	Principal Amount		Market Value
Santander Issuances VRN (Acquired 6/29/06, Cost $198,090)(c) (i) 5.805% 06/20/2016	$	200,000	$	204,106
UBS AG/Stamford 5.875% 12/20/2017		120,000		120,845
Unicredito Luxem Finance VRN (Acquired 10/17/06, Cost $200,000)(c) (i) 5.584% 01/13/2017		200,000		198,120
US AgBank FCB VRN (Acquired 5/10/07, Cost $346,511)(c) (i) 6.110% 07/10/2012		345,000		303,524
Wells Fargo & Co. 3.500% 04/04/2008		50,000		49,793
Zions Bancorp 5.500% 11/16/2015		245,000		229,761
				2,883,635
Computers — 0.1%
Sungard Data Systems, Inc. 9.125% 08/15/2013		250,000		254,375
Diversified Financial — 1.6%
Capital One Financial Corp. 4.800% 02/21/2012		170,000		160,125
Capital One Financial Corp. 6.250% 11/15/2013		230,000		221,155
Caterpillar Financial Services Corp., Series S 4.850% 12/07/2012		35,000		35,060
Charles Schwab Corp. (The) 6.375% 09/01/2017		50,000		51,428
CIT Group, Inc. 7.625% 11/30/2012		50,000		50,680
Citigroup, Inc. 6.125% 11/21/2017		50,000		51,360
Citigroup, Inc. FRN 8.300% 12/21/2037		160,000		167,071
Countrywide Financial Corp. 5.800% 06/07/2012		150,000		109,575
Countrywide Financial Corp. 6.250% 05/15/2016		230,000		132,381

	Principal Amount		Market Value
Countrywide Home Loans, Inc. 5.625% 07/15/2009	$	25,000	$	19,073
Countrywide Home Loans, Inc. 6.250% 04/15/2009		15,000		11,677
Ford Motor Credit Co. 8.625% 11/01/2010		250,000		231,988
GMAC LLC 6.625% 05/15/2012		350,000		290,961
Goldman Sachs Group, Inc. 5.250% 04/01/2013		75,000		75,299
International Lease Finance Corp. 5.000% 04/15/2010		125,000		124,630
JP Morgan Chase Capital XVIII 6.950% 08/17/2036		160,000		151,976
JP Morgan Chase Capital XX 6.550% 09/29/2036		160,000		144,366
Lehman Brothers Holdings, Inc. 5.750% 04/25/2011		520,000		525,443
Lehman Brothers Holdings, Inc. 6.500% 07/19/2017		50,000		50,593
Lehman Brothers Holdings, Inc. 6.750% 12/28/2017		50,000		51,535
Lehman Brothers Holdings, Inc. 6.875% 07/17/2037		215,000		210,202
Merrill Lynch & Co., Inc. 6.110% 01/29/2037		305,000		269,373
MUFG Capital Finance 1 Ltd. FRN 6.346% 07/25/2016		125,000		118,392
Private Export Fund 5.000% 12/15/2016		200,000		207,709
QBE Capital Funding II, LP FRN (Acquired 8/29/07 - 9/24/07, Cost $252,419)(c) (i) 6.797% 06/01/2017		260,000		248,967
SB Treasury Co. LLC (Acquired 12/12/07, Cost $100,714)(c) (i) 9.400% 12/29/2049		100,000		101,969
SLM Corp. 5.000% 04/15/2015		100,000		85,282

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
SMFG Preferred Capital VRN (Acquired 4/25/07, Cost $241,142)(c) (i) 6.078% 01/25/2017	$	120,000	$	110,546
Toll Brothers Finance Corp. 5.150% 05/15/2015		5,000		4,537
Twin Reefs FRN (Acquired 5/22/06, Cost $200,450)(c) (i) 6.243% 12/10/2009		200,000		130,164
				4,143,517
Electric — 0.5%
AES Corp. (The) 9.375% 09/15/2010		650,000		682,500
Appalachian Power Co. 5.550% 04/01/2011		75,000		75,881
Edison Mission Energy 7.500% 06/15/2013		100,000		102,500
Energy East Corp. 6.750% 07/15/2036		125,000		126,393
Pacific Gas & Electric 4.200% 03/01/2011		50,000		49,201
Taqa Abu Dhabi National (Acquired 10/23/06, Cost $99,485)(c) (i) 5.875% 10/27/2016		100,000		97,914
Virginia Electric and Power Co. 5.950% 09/15/2017		25,000		25,770
				1,160,159
Foods — 0.1%
Albertson's, Inc. 7.250% 05/01/2013		275,000		281,225
Delhaize Group 6.500% 06/15/2017		25,000		25,576
Kraft Foods, Inc. 6.875% 02/01/2038		50,000		51,909
				358,710
Health Care – Products — 0.0%
Boston Scientific 7.000% 11/15/2035		40,000		35,200
Health Care – Services — 0.2%
Tenet Healthcare Corp. 9.875% 07/01/2014		300,000		285,750
WellPoint, Inc. 6.375% 06/15/2037		120,000		117,883
				403,633

	Principal Amount		Market Value
Holding Company – Diversified — 0.3%
Capmark Financial Group, Inc. (Acquired 5/3/07, Cost $49,979)(c) (i) 5.875% 05/10/2012	$	50,000	$	39,578
Capmark Financial Group, Inc. FRN (Acquired 5/3/07, Cost $630,000)(c) (i) 5.529% 05/10/2010		630,000		507,887
JSG Funding PLC 7.750% 04/01/2015		300,000		285,000
				832,465
Home Builders — 0.0%
Centex Corp. 5.250% 06/15/2015		55,000		46,575
Centex Corp. 6.500% 05/01/2016		20,000		17,775
Toll Brothers, Inc. 4.950% 03/15/2014		15,000		13,277
Toll Brothers, Inc. 5.950% 09/15/2013		10,000		9,234
				86,861
Insurance — 1.0%
Ace Ina Holdings 6.700% 05/15/2036		70,000		70,975
Allstate Corp. (The) 6.125% 05/15/2037		95,000		91,658
Allstate Financial Global Funding (Acquired 5/1/06, Cost $663,558)(c) (i) 4.250% 09/10/2008		680,000		678,185
AMBAC Financial Group, Inc. 6.150% 02/15/2037		45,000		32,867
Assured Guaranty US Holdings, Inc. VRN 6.400% 12/15/2016		35,000		32,881
AXA SA FRN(a) (Acquired 9/7/07, Cost $127,187)(c) (i) 6.379% 12/14/2036		150,000		129,270
Catlin Insurance Co., Ltd. (Acquired 9/11/07 - 9/24/07, Cost $246,941)(c) (i) 7.249% 12/14/2049		270,000		246,861
CNA Financial Corp. 7.250% 11/15/2023		75,000		77,043

	Principal Amount		Market Value
Liberty Mutual Group, Inc. (Acquired 5/23/06 - 9/11/07, Cost $183,388)(c) (i) 6.500% 03/15/2035	$	205,000	$	187,047
Liberty Mutual Group, Inc. (Acquired 8/10/06, Cost $93,158)(c) (i) 7.500% 08/15/2036		25,000		24,394
Liberty Mutual Group, Inc. (Acquired 8/29/07 - 9/24/07, Cost $156,487)(c) (i) 7.800% 03/15/2037		170,000		151,218
Lincoln National Corp. 6.200% 12/15/2011		160,000		168,712
Monumental Global Funding III FRN (Acquired 1/10/07, Cost $170,000)(c) (i) 5.443% 01/15/2014		170,000		165,194
Nationwide Financial Services 6.750% 05/15/2037		150,000		138,165
North Front VRN (Acquired 5/22/06, Cost $240,418)(c) (i) 5.810% 12/15/2024		250,000		239,204
XL Capital Ltd. 6.500% 10/15/2049		270,000		236,077
				2,669,751
Lodging — 0.0%
Wyndham Worldwide Corp. 6.000% 12/01/2016		80,000		75,872
Machinery – Construction & Mining — 0.0%
Atlas Copco AB (Acquired 5/15/07, Cost $49,978)(c) (i) 5.600% 05/22/2017		50,000		50,018
Manufacturing — 0.1%
General Electric Co. 5.000% 02/01/2013		125,000		126,590
Tyco International Group SA 6.875% 01/15/2029		45,000		45,575
Tyco International Group SA 7.000% 06/15/2028		25,000		26,460
				198,625

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Media — 0.6%
Charter Communications Operating LLC/Charter Communications Operating Capital Corp. (Acquired 5/1/06 - 11/16/06, Cost $435,591)(c) (i) 8.375% 04/30/2014	$	425,000	$	411,188
Comcast Corp. 5.875% 02/15/2018		60,000		59,819
Comcast Corp. 6.450% 03/15/2037		55,000		56,000
Comcast Corp. 6.950% 08/15/2037		50,000		53,964
Cox Communications, Inc. 7.750% 11/01/2010		50,000		53,332
McGraw-Hill Cos Inc. 5.375% 11/15/2012		50,000		50,912
News America, Inc. 6.400% 12/15/2035		90,000		91,048
News America, Inc. (Acquired 11/8/07, Cost $49,936)(c) (i) 6.650% 11/15/2037		50,000		51,574
Nielsen Finance LLC, Co. 10.000% 08/01/2014		325,000		332,313
Time Warner, Inc. 7.625% 04/15/2031		110,000		121,728
Umbella Acquistion, Inc. (Acquired 12/6/07, Cost $279,750)(c) (i) 9.750% 03/15/2015		300,000		273,375
				1,555,253
Mining — 0.0%
Freeport-McMoran Copper & Gold, Inc. 6.875% 02/01/2014		35,000		35,350
Oil & Gas — 0.4%
Apache Corp. 6.000% 01/15/2037		50,000		49,591
Canadian Natural Resources Ltd. 5.700% 05/15/2017		125,000		124,239
Enterprise Products Operating LP 5.600% 10/15/2014		100,000		99,799
Enterprise Products Operating LP 6.875% 03/01/2033		100,000		104,476

	Principal Amount		Market Value
EOG Resources, Inc. 5.875% 09/15/2017	$	25,000	$	25,631
Gaz Capital for Gazprom, Reg S 6.510% 03/07/2022		100,000		96,680
Husky Energy, Inc. 6.800% 09/15/2037		180,000		189,197
Marathon Oil Corp. 6.600% 10/01/2037		85,000		88,631
Petrobras International Finance Co. 6.125% 10/06/2016		60,000		61,200
XTO Energy, Inc. 6.100% 04/01/2036		85,000		82,979
				922,423
Packaging & Containers — 0.1%
Jefferson Smurfit Corp. 7.500% 06/01/2013		300,000		287,250
Pharmaceuticals — 0.1%
AstraZeneca PLC 5.400% 09/15/2012		50,000		51,692
Cardinal Health, Inc. (Acquired 9/28/06, Cost $99,862)(c) (i) 5.800% 10/15/2016		100,000		102,493
Hospira, Inc. 5.550% 03/30/2012		40,000		40,675
				194,860
Pipelines — 0.3%
Gulfstream Natural Gas System LLC (Acquired 6/1/06, Cost $243,573)(c) (i) 6.190% 11/01/2025		250,000		242,836
Kinder Morgan Energy Partners LP 5.125% 11/15/2014		65,000		63,333
Kinder Morgan Energy Partners LP 6.000% 02/01/2017		145,000		144,992
Kinder Morgan Energy Partners LP 6.500% 02/01/2037		60,000		59,301
Southern Natural Gas Co. (Acquired 3/14/07, Cost $159,951)(c) (i) 5.900% 04/01/2017		160,000		157,371
Trans-Canada Pipelines 6.200% 10/15/2037		75,000		74,467
The Williams Companies, Inc. 7.875% 09/01/2021		45,000		49,894

	Principal Amount		Market Value
Williams Cos., Inc. 8.750% 03/15/2032	$	45,000	$	55,013
				847,207
Real Estate Investment Trusts (REITS) — 0.4%
Brandywine Operating Partnership LP REIT 5.400% 11/01/2014		155,000		147,200
Brandywine Operating Partnership LP REIT 5.700% 05/01/2017		165,000		152,849
Brandywine Operating Partnership LP REIT 6.000% 04/01/2016		30,000		28,742
Developers Diversified Realty Corp. REIT 5.000% 05/03/2010		150,000		147,600
Developers Diversified Realty Corp. REIT 5.500% 05/01/2015		20,000		18,685
Hospitality Properties Trust 6.700% 01/15/2018		75,000		74,070
Kimco Realty Corp. REIT 4.820% 06/01/2014		50,000		46,479
Prologis REIT 5.250% 11/15/2010		170,000		169,331
Prologis REIT 5.625% 11/15/2015		45,000		43,046
Simon Property Group LP REIT 5.875% 03/01/2017		75,000		71,895
				899,897
Regional (State & Province) — 0.1%
New Brunswick Province ADR (Canada) 5.200% 02/21/2017		120,000		125,640
Retail — 0.3%
Costco Wholesale Corp. 5.300% 03/15/2012		300,000		307,912
CVS Caremark Corp. (Acquired 11/14/06, Cost $30,732)(c) (i) 5.298% 01/11/2027		30,005		27,995
Federated Retail Holding 6.375% 03/15/2037		60,000		52,293
Home Depot, Inc. FRN 5.116% 12/16/2009		170,000		166,549
Limited Brands, Inc. 6.900% 07/15/2017		15,000		14,493
Michaels Stores, Inc.(b) 10.000% 11/01/2014		200,000		190,000
				759,242

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Savings & Loans — 0.3%
Independence Community Bank Corp. 4.900% 09/23/2010	$	170,000	$	170,223
Washington Mutual Preferred Funding FRN (Acquired 10/18/07, Cost $300,000)(c) (i) 9.750% 12/15/2017		300,000		240,000
Washington Mutual Preferred Funding II 6.665% 12/31/2049		200,000		118,000
Washington Mutual, Inc. 5.000% 03/22/2012		50,000		43,851
Washington Mutual, Inc. 5.250% 09/15/2017		75,000		62,552
				634,626
Sovereign — 0.1%
Swedish Export Credit ADR (Sweden) 5.125% 03/01/2017		120,000		123,716
Telecommunications — 0.7%
British Telecommunications PLC 5.950% 01/15/2018		100,000		100,794
Cisco Systems, Inc. 5.250% 02/22/2011		50,000		51,263
Intelsat Subsidiary Holding Co. Ltd. 8.250% 01/15/2013		75,000		75,375
New Cingular Wireless Services, Inc. 8.750% 03/01/2031		25,000		32,400
Nextel Communications, Inc. 6.875% 10/31/2013		105,000		103,438
Qwest Capital Funding, Inc. 7.250% 02/15/2011		150,000		147,750
Qwest Communications International, Inc. 7.250% 02/15/2011		275,000		275,000
SBC Communications, Inc. 5.625% 06/15/2016		50,000		50,571
Sprint Capital Corp. 6.875% 11/15/2028		25,000		23,709
Sprint Capital Corp. 8.750% 03/15/2032		180,000		202,896

	Principal Amount		Market Value
Telecom Italia Capital SA ADR (Italy) 7.200% 07/18/2036	$	55,000	$	60,641
US Unwired, Inc. 10.000% 06/15/2012		320,000		339,255
Valor Telecommunications Enterprises LLC/Finance Corp. 7.750% 02/15/2015		150,000		158,371
Verizon Communications, Inc. 5.500% 04/01/2017		100,000		100,465
Vodafone Group PLC 6.150% 02/27/2037		50,000		49,381
				1,771,309
Transportation — 0.0%
BNSF Funding Trust I FRN 6.613% 01/15/2026		15,000		14,006
Burlington Northern Santa Fe Corp. 6.150% 05/01/2037		60,000		58,328
Union Pacific Corp. 5.750% 11/15/2017		15,000		14,943
				87,277
TOTAL CORPORATE DEBT (Cost $23,012,726)				22,186,484
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 4.8%
Commercial MBS — 1.1%
American Tower Trust, Series 2007-1A, Class AFX (Acquired 4/27/07, Cost $75,000)(c) (i) 5.420% 04/15/2037		75,000		72,748
American Tower Trust, Series 2007-1A, Class B (Acquired 4/27/07, Cost $50,000)(c) (i) 5.537% 04/15/2037		50,000		47,934
American Tower Trust, Series 2007-1A, Class D (Acquired 4/27/07, Cost $400,000)(c) (i) 5.957% 04/15/2037		400,000		370,072

	Principal Amount		Market Value
CS First Boston Mortgage Securities Corp., Series 2001-CP4, Class A4 6.180% 12/15/2035	$	125,000	$	129,421
CS First Boston Mortgage Securities Corp., Series 2004-C1, Class E (Acquired 10/3/07, Cost $213,021)(c) (i) 5.015% 01/15/2037		225,000		195,618
CS First Boston Mortgage Securities Corp., Series 2004-C5, Class A3 4.499% 11/15/2037		180,000		175,680
CS First Boston Mortgage Securities Corp., Series 2005-C1, Class A3 4.813% 02/15/2038		125,000		122,826
GMAC Commercial Mortgage Securities, Inc., Series 2001-C1, Class A2 6.465% 04/15/2034		249,523		258,894
Greenwich Capital Commercial Funding Corp., Series 2002-C1, Class A2 4.112% 01/11/2017		423,913		414,791
JP Morgan Chase Commercial Mortgage Securities Corp., Series 2006-LDP7, Class A4 FRN 6.065% 04/15/2045		50,000		51,835
LB-UBS Commercial Mortgage Trust, Series 2002-C1, Class A4 6.462% 03/15/2031		600,000		630,561
Merrill Lynch Mortgage Trust, Series 2005-LC1, Class A2 5.202% 01/12/2044		125,000		125,201
Salomon Brothers Mortgage Securities VII, Inc., Series 2001-C2, Class H 7.676% 11/13/2011		175,000		165,789
				2,761,370

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Credit Card ABS — 0.4%
MBNA Credit Card Master Note Trust, Series 2003-1C, Class C FRN 6.730% 06/15/2012	$	325,000	$	323,986
MBNA Credit Card Master Note Trust, Series 2003-3C, Class C 6.378% 10/15/2010		325,000		323,934
Washington Mutual Master Note Trust, Series 2006-A2A, Class A FRN (Acquired 9/13/07, Cost $96,828)(c) (i) 5.080% 06/15/2015		100,000		97,625
Washington Mutual Master Note Trust, Series 2007-A4A, Class A4 (Acquired 10/30/07, Cost $99,980)(c) (i) 5.200% 10/15/2014		100,000		102,531
				848,076
Home Equity ABS — 0.2%
GMAC Mortgage Corp. Loan Trust, Series 2007-HE2, Class A3 6.193% 12/25/2037		250,000		247,461
GSAA Trust, Series 2006-7, Class AF5A, STEP 6.205% 03/25/2046		50,000		49,412
Home Equity Mortgage Trust, Series 2006-3, Class A1 5.472% 09/25/2036		24,903		17,811
Irwin Home Equity Corp., Series 2006-P1, Class 2A4 (Acquired 8/6/07, Cost $264,688)(c) (i) 5.800% 06/25/2037		275,000		258,543
				573,227

	Principal Amount		Market Value
Other ABS — 0.0%
New Century Home Equity Loan Trust, Series 2006-2, Class A2B FRN 5.025% 08/25/2036	$	50,000	$	44,602
WL Collateral CMO — 3.0%
American Home Mortgage Assets, Series 2007-3, Class II2A1 6.250% 06/25/2037		99,499		97,842
Bear Stearns Asset Backed Securities Trust, Series 2005-AC3, Class 2A1 5.250% 06/25/2020		107,078		106,429
Countrywide Alternative Loan Trust, Series 2007-2CB, Class 1A9 5.750% 03/25/2037		236,287		232,172
Countrywide Alternative Loan Trust, Series 2007-HY4, Class 3A1 5.909% 06/25/2047		162,801		158,443
Countrywide Alternative Loan Trust, Series 2007-HY4, Class 4A1 FRN 5.963% 06/25/2047		229,034		221,247
Countrywide Home Loan Mortgage Pass Through Trust, Series 2006-HYB5, Class 3A1B VRN 5.923% 09/20/2036		37,503		37,227
CS First Boston Mortgage Securities Corp., Series 2003-23, Class 8A1 5.000% 09/25/2018		87,602		83,813
CS First Boston Mortgage Securities Corp., Series 2005-7, Class 3A1 5.000% 08/25/2020		44,264		42,369
CSAB Mortgage Backed Trust, Series 2006-2, Class A6A 5.720% 09/25/2036		350,000		325,445

	Principal Amount		Market Value
Indymac IMSC Mortgage Loan Trust, Series 2007-F3, Class 2A1 6.500% 08/25/2037	$	250,003	$	251,331
Indymac Index Mortgage Loan Trust, Series 2005-AR35, Class 2A1 VRN 5.992% 02/25/2036		761,478		750,087
Indymac Index Mortgage Loan Trust, Series 2006-AR5, Class 2A1 VRN 5.845% 05/25/2036		88,591		86,868
J.P.Morgan Alternative Loan Trust, Series 2006-S3, Class A6 6.120% 08/25/2036		375,000		360,533
Lehman Mortgage Trust, Series 2007-7, Class 6A4 7.000% 07/25/2037		47,098		48,143
Lehman Mortgage Trust, Series 2007-8, Class 3A1 7.250% 08/25/2037		322,689		321,378
MASTR Alternative Loans Trust, Series 2004-5, Class 5A1 4.750% 06/25/2019		268,282		254,468
Residential Accredit Loans, Inc., Series 2007-GS11, Class A1 7.000% 10/25/2037		367,791		369,515
Residential Accredit Loans, Inc., Series 2007-QS9, Class A33 6.500% 07/25/2037		72,201		72,404
Residential Asset Securitization Trust, Series 2004-A6, Class A1 5.000% 08/25/2019		573,282		548,713
Residential Funding Mortgage Securities II, Inc., Series 2007-HSA2, Class A1F 8.470% 04/25/2037		37,211		37,042

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Structured Adjustable Rate Mortgage Loan Trust, Series 2006-4, Class 5A1 FRN 5.924% 05/25/2036	$	337,912	$	332,032
Washington Mutual Mortgage Pass Through Certificates, Series 2007-HY5, Class 3A1 5.828% 05/25/2037		754,803		737,649
Washington Mutual, Inc., Series 2003-S2, Class A1 5.000% 05/25/2018		253,158		246,437
Washington Mutual, Inc., Series 2003-S6, Class 2A3 4.750% 07/25/2018		193,789		186,969
Washington Mutual, Inc., Series 2003-S7, Class A1 4.500% 08/25/2018		67,823		64,846
Wells Fargo Mortgage Backed Securities Trust, Series 2006-AR15, Class A1 FRN 5.657% 10/25/2036		748,556		736,488
Wells Fargo Mortgage Backed Securities Trust, Series 2003-16, Class 2A1 4.500% 12/25/2018		65,102		62,247
Wells Fargo Mortgage Backed Securities Trust, Series 2003-3, Class 2A1 5.250% 04/25/2033		96,653		94,914
Wells Fargo Mortgage Backed Securities Trust, Series 2006-1, Class A3 5.000% 03/25/2021		889,745		866,595
				7,733,646
WL Collateral Support CMO — 0.1%
Residential Accredit Loans, Inc., Series 2007-QS11, Class A2 7.000% 10/25/2037		269,713		261,538
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $12,381,432)				12,222,459

	Principal Amount		Market Value
SOVEREIGN DEBT OBLIGATIONS — 2.0%
Sovereign
Bundesrepub. Deutschland EUR(d) 4.250% 07/04/2014	$	510,000	$	751,539
Bundesrepub. Deutschland EUR(d) 4.500% 07/04/2009		350,000		517,760
Canadian Government CAD(d) 4.500% 06/01/2015		70,000		73,688
France Government Bond EUR(d) 4.750% 04/25/2035		170,000		253,183
Japanese Government Bond JPY(d) 0.500% 06/20/2013		90,000,000		779,600
Queensland Treasury Corp. AUD(d) 6.000% 10/14/2015		70,000		58,295
Republic of Brazil BRL(d) 10.250% 01/10/2028		675,000		367,107
Republic of Colombia 7.375% 09/18/2037		200,000		222,500
Republic of Colombia 10.000% 01/23/2012		100,000		116,250
Republic of Colombia COP(d) 9.850% 06/28/2027		130,000,000		64,251
Republic of Colombia COP(d) 12.000% 10/22/2015		315,000,000		174,414
Republic of Hungary HUF(d) 6.750% 02/24/2017		13,000,000		73,807
Republic of Indonesia IDR(d) 10.250% 07/15/2027		1,468,000,000		150,018
Republic of Poland PLN(d) 5.000% 10/24/2013		200,000		78,006
Republic of Poland PLN(d) 5.750% 09/23/2022		215,000		87,388
Republic of South Africa ZAR(d) 10.500% 12/21/2026		325,000		58,253
Republic of Turkey TRY(d) 0.000% 07/16/2008		565,000		446,414
Republic of Turkey TRY(d) 10.000% 02/15/2012		175,000		169,528
Sweden Government Bond SEK(d) 6.750% 05/05/2014		1,060,000		188,094

	Principal Amount		Market Value
United Kingdom GBP(d) 4.000% 09/07/2016	$	20,000	$	38,686
United Kingdom GBP(d) 4.250% 06/07/2032		60,000		118,038
United Kingdom Treasury GBP(d) 5.000% 09/07/2014		120,000		247,405
United Mexican States MXN(d) 10.000% 12/05/2024		1,010,000		107,681
				5,141,905
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $4,740,286)				5,141,905
U.S. GOVERNMENT AGENCY OBLIGATIONS — 10.4%
U.S. Government Agencies
Collateralized Mortgage Obligations — 0.3%
FHLMC, Series 3233, Class PA 6.000% 10/15/2036		113,095		116,513
FHLMC, Series 3312, Class PA 5.500% 05/15/2037		121,930		122,771
FNMA, Series 2007-33, Class HE 5.500% 04/25/2037		168,052		169,298
FNMA, Series 2007-40, Class PT 5.500% 05/25/2037		339,021		340,812
				749,394
Farmer Mac — 0.1%
Farmer Mac (Acquired 7/13/06, Cost $249,058)(c) (i) 5.500% 07/15/2011		250,000		262,564
Federal Home Loan Bank — 0.6%
Federal Home Loan Bank 4.625% 11/21/2008		325,000		326,042
Federal Home Loan Bank 5.125% 08/14/2013		200,000		210,497
Federal Home Loan Bank 5.625% 06/13/2016		490,000		516,866
Federal Home Loan Bank 5.750% 06/27/2016		545,000		579,315
				1,632,720

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Pass-Through Securities — 9.4%
FHLMC 5.250% 07/18/2011	$	2,225,000	$	2,329,543
FHLMC 6.405% 02/01/2037		145,853		148,536
FHLMC 6.625% 09/15/2009		1,195,000		1,253,390
FNMA 5.000% 12/01/2020- 08/01/2036		642,491		637,003
FNMA 5.250% 08/01/2012		1,660,000		1,729,406
FNMA 5.500% 06/01/2021- 05/01/2037		7,506,415		7,504,634
FNMA 6.000% 04/01/2026- 03/01/2037		6,925,602		7,033,891
FNMA 6.250% 05/15/2029		150,000		176,054
FNMA 6.500% 07/01/2035- 08/01/2037		2,405,967		2,476,547
FNMA 7.000% 03/01/2037- 10/01/2047		684,882		705,261
				23,994,265
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $26,112,099)				26,638,943
U.S. TREASURY OBLIGATIONS — 3.1%
U.S. Treasury Bond(b) 4.500% 02/15/2036		190,000		191,039
U.S. Treasury Bond(b) 5.000% 05/15/2037		945,000		1,028,573
U.S. Treasury Bond 5.250% 02/15/2029		200,000		220,125
U.S. Treasury Bond 6.250% 08/15/2023		635,000		760,214
U.S. Treasury Bond 7.875% 02/15/2021		75,000		100,863
U.S. Treasury Bond 8.875% 08/15/2017		66,000		90,796
U.S. Treasury Bond 11.250% 02/15/2015		845,000		1,234,690
U.S. Treasury Inflation Index 2.000% 04/15/2012		257,393		266,864
U.S. Treasury Note 3.625% 07/15/2009		175,000		176,354
U.S. Treasury Note 3.625% 05/15/2013		500,000		503,242

	Principal Amount		Market Value
U.S. Treasury Note(b) 3.875% 02/15/2013	$	110,000	$	112,166
U.S. Treasury Note 4.250% 09/30/2012		1,140,000		1,179,722
U.S. Treasury Note 4.625% 12/31/2011		1,460,000		1,531,175
U.S. Treasury Note 4.875% 04/30/2011		580,000		610,767
				8,006,590
TOTAL U.S. TREASURY OBLIGATIONS (Cost $7,820,098)				8,006,590
TOTAL BONDS & NOTES (Cost $78,494,713)				78,462,064
TOTAL LONG TERM INVESTMENTS (Cost $251,718,609)				250,663,689
SHORT-TERM INVESTMENTS — 6.6%
Cash Equivalents — 4.9%(g)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008		298,940		298,940
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		298,940		298,940
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		179,364		179,364
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		239,152		239,152
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		239,152		239,152
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		149,470		149,470
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		149,470		149,470
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		418,516		418,516

	Principal Amount		Market Value
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008	$	239,152	$	239,152
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		179,364		179,364
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		149,470		149,470
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		179,364		179,364
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		179,364		179,364
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		179,364		179,364
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		179,364		179,364
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		239,152		239,152
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		298,940		298,940
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		1,270,496		1,270,496
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		239,152		239,152
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		179,364		179,364
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		149,470		149,470

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Asset Allocation Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008	$	269,046	$	269,046
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		89,682		89,682
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		298,940		298,940
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		298,940		298,940
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		298,940		298,940
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		179,365		179,365
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		179,365		179,365
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		209,259		209,259
Reserve Primary Money Market Fund(e)		710,432		710,432
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		298,941		298,941
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		149,471		149,471
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		149,471		149,471
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		239,153		239,153

	Principal Amount		Market Value
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008	$	209,259	$	209,259
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		209,259		209,259
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		1,760,271		1,760,271
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		298,940		298,940
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		119,576		119,576
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		298,940		298,940
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		298,940		298,940
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		149,470		149,470
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		209,258		209,258
				12,559,938
Repurchase Agreements — 1.5%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(f)		3,836,646		3,836,646
U.S. Government Agencies — 0.2%
Federal Home Loan Bank FRN 3.560% 03/12/2008		415,000		414,981

	Market Value
TOTAL SHORT-TERM INVESTMENTS (Cost $16,811,565)	$	16,811,565
TOTAL INVESTMENTS — 104.8% (Cost $268,530,174)(h)		267,475,254
Other Assets/ (Liabilities) — (4.8%)		(12,181,070	)
NET ASSETS — 100.0%	$	255,294,184

Notes to Portfolio of Investments

ADR - American Depository Receipt

AUD - Australian Dollar

BRL - Brazilian Real

CAD - Canadian Dollar

COP - Colombian Peso

EUR - Euro

FRN - Floating Rate Note

GBP - British Pound

HUF - Hungarian Forint

IDR - Indonesian Rupiah

JPY - Japanese Yen

MXN - Mexican Peso

PLN - Polish Zloty

SEK - Swedish Kronor

STEP - Step up bond

TRY - New Turkish Lira

VRN - Variable Rate Note

ZAR - South African Rand

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(c) Securities exempt from registration under rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers. At December 31, 2007, these securities amounted to a value of $10,287,254 or 4.0% of net assets.

(d) The principal amount of the security is in foreign currency. The market value is in U.S. dollars.

(e) Principal amount represents shares owned of the fund.

(f) Maturity value of $3,837,194. Collateralized by a U.S. Government Agency obligation with a rate of 5.378%, maturity date of 12/15/2035, and an aggregate market value, including accrued interest, of $3,914,855.

(g) Represents investments of security lending collateral. (Note 2).

(h) See Note 6 for aggregate cost for Federal tax purposes.

(i) Restricted security. (Note 2)

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Income Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 94.1%
COMMON STOCK — 94.1%
Aerospace & Defense — 0.4%
Raytheon Co.		23,000	$	1,396,100
Agriculture — 0.5%
UST, Inc.(a)		31,000		1,698,800
Airlines — 0.3%
Southwest Airlines Co.		79,800		973,560
Auto Manufacturers — 0.2%
Ford Motor Co.(a) (b)		126,900		854,037
Banks — 6.9%
The Bank of New York Mellon Corp.		99,800		4,866,248
Capital One Financial Corp.		47,100		2,225,946
Fifth Third Bancorp		111,700		2,807,021
KeyCorp		15,900		372,855
National City Corp.(a)		52,600		865,796
Royal Bank of Scotland Group PLC		130,800		1,185,136
State Street Corp.		40,200		3,264,240
SunTrust Banks, Inc.		67,500		4,218,075
U.S. Bancorp		145,700		4,624,518
Wells Fargo & Co.		55,500		1,675,545
				26,105,380
Beverages — 1.9%
Anheuser-Busch Cos., Inc.		78,700		4,119,158
The Coca-Cola Co.		47,700		2,927,349
				7,046,507
Biotechnology — 0.9%
Amgen, Inc.(b)		69,400		3,222,936
Building Materials — 1.1%
Masco Corp.		132,600		2,865,486
USG Corp.(a) (b)		40,400		1,445,916
				4,311,402
Chemicals — 1.6%
Du Pont (E.I.) de Nemours & Co.		71,700		3,161,253
International Flavors & Fragrances, Inc.(a)		63,800		3,070,694
				6,231,947
Commercial Services — 0.6%
Block (H&R), Inc.		131,200		2,436,384

	Number of Shares		Market Value
Computers — 1.5%
Computer Sciences Corp.(b)		31,000	$	1,533,570
Dell, Inc.(b)		134,100		3,286,791
Electronic Data Systems Corp.		41,200		854,076
				5,674,437
Cosmetics & Personal Care — 2.4%
Avon Products, Inc.		65,200		2,577,356
Colgate-Palmolive Co.		35,700		2,783,172
The Procter & Gamble Co.		51,900		3,810,498
				9,171,026
Distribution & Wholesale — 0.6%
Genuine Parts Co.		45,500		2,106,650
Diversified Financial — 6.4%
The Charles Schwab Corp.		19,800		505,890
Citigroup, Inc.		92,300		2,717,312
Countrywide Financial Corp.(a)		76,200		681,228
Fannie Mae		67,300		2,690,654
JP Morgan Chase & Co.		202,200		8,826,030
Legg Mason, Inc.		35,300		2,582,195
Merrill Lynch & Co., Inc.		78,600		4,219,248
SLM Corp.		94,800		1,909,272
				24,131,829
Electric — 4.2%
Duke Energy Corp.		112,400		2,267,108
Entergy Corp.		29,200		3,489,984
FirstEnergy Corp.		39,600		2,864,664
Pinnacle West Capital Corp.		36,600		1,552,206
Progress Energy, Inc.		54,600		2,644,278
Teco Energy, Inc.(a)		48,900		841,569
Xcel Energy, Inc.		102,200		2,306,654
				15,966,463
Environmental Controls — 0.5%
Waste Management, Inc.		59,400		1,940,598
Foods — 3.0%
Campbell Soup Co.		31,300		1,118,349
General Mills, Inc.		56,900		3,243,300
The Hershey Co.(a)		77,500		3,053,500
Kraft Foods, Inc. Cl. A		73,700		2,404,831
McCormick & Co., Inc.		43,300		1,641,503
				11,461,483
Forest Products & Paper — 2.0%
International Paper Co.		159,600		5,167,848
MeadWestvaco Corp.		75,100		2,350,630
				7,518,478

	Number of Shares		Market Value
Gas — 0.8%
NiSource, Inc.		167,600	$	3,165,964
Health Care – Products — 2.0%
Baxter International, Inc.		33,300		1,933,065
Boston Scientific Corp.(b)		62,000		721,060
Johnson & Johnson		71,800		4,789,060
				7,443,185
Home Builders — 0.3%
D.R. Horton, Inc.(a)		92,800		1,222,176
Home Furnishing — 0.7%
Sony Corp. JPY		35,700		1,932,009
Whirlpool Corp.		11,000		897,930
				2,829,939
Household Products — 2.2%
Avery Dennison Corp.		61,200		3,252,168
Fortune Brands, Inc.		38,600		2,793,096
Kimberly-Clark Corp.		31,900		2,211,946
				8,257,210
Housewares — 0.8%
Newell Rubbermaid, Inc.		117,800		3,048,664
Insurance — 5.5%
American International Group, Inc.		79,700		4,646,510
Chubb Corp.		31,000		1,691,980
Genworth Financial, Inc. Cl. A		59,800		1,521,910
Lincoln National Corp.		59,200		3,446,624
Marsh & McLennan Cos., Inc.		187,500		4,963,125
Progressive Corp.		89,500		1,714,820
St. Paul Travelers Cos.		55,600		2,991,280
				20,976,249
Internet — 0.7%
Yahoo!, Inc.(b)		119,300		2,774,918
Leisure Time — 0.6%
Harley-Davidson, Inc.		48,900		2,284,119
Manufacturing — 7.3%
3M Co.		55,800		4,705,056
Cooper Industries Ltd. Cl. A		36,200		1,914,256
Eastman Kodak Co.(a)		100,900		2,206,683
General Electric Co.		323,200		11,981,024
Honeywell International, Inc.		53,200		3,275,524
Illinois Tool Works, Inc.		67,500		3,613,950
				27,696,493

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Income Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Media — 5.3%
Cablevision Systems Corp. Cl. A(b)		61,600	$	1,509,200
CBS Corp. Cl. B		87,800		2,392,550
Comcast Corp. Cl. A(b)		15,900		290,334
Gannett Co., Inc.		82,100		3,201,900
The McGraw-Hill Cos., Inc.		79,800		3,496,038
New York Times Co. Cl. A(a)		125,900		2,207,027
Time Warner, Inc.		235,800		3,893,058
The Walt Disney Co.		98,500		3,179,580
				20,169,687
Mining — 1.2%
Alcoa, Inc.		63,300		2,313,615
Vulcan Materials Co.		27,300		2,159,157
				4,472,772
Oil & Gas — 11.0%
Anadarko Petroleum Corp.		59,800		3,928,262
BP PLC, Sponsored ADR (United Kingdom)		43,300		3,168,261
Chevron Corp.		99,000		9,239,670
Exxon Mobil Corp.		97,400		9,125,406
Hess Corp.		47,600		4,800,936
Murphy Oil Corp.		47,900		4,063,836
Royal Dutch Shell PLC Sponsored ADR (United Kingdom)		79,800		6,719,160
Statoil ASA, NOK		7,100		220,114
StatoilHydro ASA, SP ADR (Norway)		9,400		286,888
				41,552,533
Oil & Gas Services — 1.2%
BJ Services Co.		61,100		1,482,286
Schlumberger Ltd.		31,800		3,128,166
				4,610,452
Pharmaceuticals — 6.1%
Abbott Laboratories		48,200		2,706,430
Bristol-Myers Squibb Co.		104,200		2,763,384
Cardinal Health, Inc.		3,900		225,225
Eli Lilly & Co.		91,800		4,901,202
Merck & Co., Inc.		88,200		5,125,302
Pfizer, Inc.		179,500		4,080,035
Wyeth		72,700		3,212,613
				23,014,191
Pipelines — 0.4%
Spectra Energy Corp.		62,550		1,615,041
Retail — 2.7%
Bed Bath & Beyond, Inc.(a) (b)		90,100		2,648,039
The Home Depot, Inc.		135,000		3,636,900

	Number of Shares		Market Value
Walgreen Co.		3,900	$	148,512
Wal-Mart Stores, Inc.		79,800		3,792,894
				10,226,345
Semiconductors — 1.5%
Analog Devices, Inc.		85,100		2,697,670
Applied Materials, Inc.		50,900		903,984
Intel Corp.		80,500		2,146,130
				5,747,784
Software — 2.0%
Microsoft Corp.		207,900		7,401,240
Telecommunications — 5.3%
Alcatel-Lucent Sponsored ADR (France)		199,500		1,460,340
AT&T, Inc.		189,800		7,888,088
Motorola, Inc.		121,100		1,942,444
Qwest Communications International, Inc.(a) (b)		365,800		2,564,258
Sprint Nextel Corp.		181,700		2,385,721
Verizon Communications, Inc.		83,800		3,661,222
				19,902,073
Toys, Games & Hobbies — 0.5%
Mattel, Inc.		102,000		1,942,080
Transportation — 1.0%
Union Pacific Corp.		19,800		2,487,276
United Parcel Service, Inc. Cl. B		16,800		1,188,096
				3,675,372
TOTAL COMMON STOCK (Cost $347,646,567)				356,276,504
PREFERRED STOCK — 0.0%
Diversified Financial
SLM Corp. Preferred, Convertible		200		206,701
TOTAL PREFERRED STOCK (Cost $200,000)				206,701
TOTAL EQUITIES (Cost $347,846,567)				356,483,205

	Principal Amount		Market Value
BONDS & NOTES — 0.1%
CORPORATE DEBT — 0.1%
Auto Manufacturers
Ford Motor Co. 4.250% 12/15/2036	$	366,000	$	363,713
TOTAL CORPORATE DEBT (Cost $366,000)				363,713
TOTAL BONDS & NOTES (Cost $366,000)				363,713
	Number of Shares
MUTUAL FUND — 2.6%
Financial Services
Government Reserve Investment Fund		9,689,405		9,689,405
TOTAL MUTUAL FUND (Cost $9,689,405)				9,689,405
TOTAL LONG TERM INVESTMENTS (Cost $357,901,972)				366,536,323
	Principal Amount
SHORT-TERM INVESTMENTS — 8.0%
Cash Equivalents — 5.4%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	481,864		481,864
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		481,867		481,867
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		289,118		289,118
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		385,491		385,491
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		385,491		385,491
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		240,932		240,932

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Equity Income Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008	$	240,932	$	240,932
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		674,610		674,610
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		385,491		385,491
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		289,118		289,118
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		240,932		240,932
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		289,118		289,118
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		289,118		289,118
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		289,118		289,118
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		289,118		289,118
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		385,491		385,491
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		481,864		481,864
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		2,047,922		2,047,922
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		385,491		385,491
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		289,118		289,118
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		240,932		240,932
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		433,678		433,678
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		144,559		144,559
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		481,864		481,864

	Principal Amount		Market Value
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008	$	481,864	$	481,864
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		481,864		481,864
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		289,118		289,118
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		289,118		289,118
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		337,305		337,305
Reserve Primary Money Market Fund(c)		1,145,150		1,145,150
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		481,864		481,864
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		240,932		240,932
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		240,932		240,932
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		385,491		385,491
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		337,305		337,305
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		337,305		337,305
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		2,837,394		2,837,394
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		481,864		481,864
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		192,746		192,746
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		481,864		481,864
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		481,864		481,864
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		240,932		240,932

	Principal Amount		Market Value
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008	$	337,305	$	337,305
				20,245,454
Repurchase Agreements — 2.6%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		9,976,241		9,976,241
TOTAL SHORT-TERM INVESTMENTS (Cost $30,221,695)				30,221,695
TOTAL INVESTMENTS — 104.8% (Cost $388,123,667)(f)				396,758,018
Other Assets/ (Liabilities) — (4.8%)				(18,142,175	)
NET ASSETS — 100.0%			$	378,615,843

Notes to Portfolio of Investments

ADR - American Depository Receipt

JPY - Japanese Yen

NOK - Norwegian Krone

(a) Denotes all or a portion of security on loan. (Note 2).

(b) Non-income producing security.

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $9,977,654. Collateralized by U.S. Government Agency obligations with rates ranging from 4.735% to 5.633%, maturity dates ranging from 4/01/2035 to 5/01/2035, and an aggregate market value, including accrued interest, of $10,177,354.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Income & Growth Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.6%
COMMON STOCK — 99.6%
Aerospace & Defense — 4.4%
Boeing Co.		26,073	$	2,280,345
Lockheed Martin Corp.		17,342		1,825,419
Northrop Grumman Corp.		29,332		2,306,668
Raytheon Co.		4,235		257,064
				6,669,496
Agriculture — 0.4%
Altria Group, Inc.		3,864		292,041
Reynolds American, Inc.(a)		4,153		273,932
				565,973
Airlines — 0.1%
Southwest Airlines Co.		16,790		204,838
Apparel — 0.1%
VF Corp.		2,900		199,114
Auto Manufacturers — 0.2%
Ford Motor Co.(a) (b)		54,997		370,130
Automotive & Parts — 1.0%
Magna International, Inc. Cl. A		17,956		1,444,201
Banks — 3.8%
Bank of America Corp.		81,258		3,352,705
The Bank of New York Mellon Corp.		5,478		267,107
Capital One Financial Corp.		11,124		525,720
Marshall & Ilsley Corp.		10,837		286,964
Royal Bank of Canada		9,512		485,492
U.S. Bancorp		27,388		869,295
				5,787,283
Beverages — 1.5%
Coca-Cola Enterprises, Inc.		21,921		570,604
Molson Coors Brewing Co. Cl. B		12,024		620,679
The Pepsi Bottling Group, Inc.		20,018		789,910
PepsiAmericas, Inc.		7,240		241,237
				2,222,430
Biotechnology — 1.9%
Amgen, Inc.(b)		44,287		2,056,688
Genzyme Corp.(b)		5,710		425,052
Invitrogen Corp.(b)		3,636		339,639
				2,821,379

	Number of Shares		Market Value
Building Materials — 0.2%
Masco Corp.(a)		13,056	$	282,140
Chemicals — 1.7%
CF Industries Holdings, Inc.		1,932		212,636
Du Pont (E.I.) de Nemours & Co.		35,576		1,568,546
Methanex Corp.(a)		26,519		731,924
Terra Industries, Inc.(b)		1,313		62,709
				2,575,815
Coal — 0.4%
Alpha Natural Resources, Inc.(b)		12,145		394,470
Walter Industries, Inc.		6,926		248,851
				643,321
Commercial Services — 1.8%
Accenture Ltd. Cl. A		50,533		1,820,704
Deluxe Corp.		5,763		189,545
Donnelley (R.R.) & Sons Co.		16,447		620,710
McKesson Corp.		1,409		92,304
				2,723,263
Computers — 8.2%
Apple, Inc.(b)		2,530		501,142
Computer Sciences Corp.(b)		35,128		1,737,782
Electronic Data Systems Corp.		33,478		693,999
Hewlett-Packard Co.		68,219		3,443,695
International Business Machines Corp.		34,246		3,701,993
Seagate Technology		45,385		1,157,317
Western Digital Corp.(b)		36,666		1,107,680
				12,343,608
Cosmetics & Personal Care — 0.4%
The Procter & Gamble Co.		9,270		680,603
Diversified Financial — 8.7%
The Charles Schwab Corp.		5,031		128,542
Citigroup, Inc.		81,855		2,409,811
Fannie Mae		3,688		147,446
Freddie Mac		4,076		138,869
The Goldman Sachs Group, Inc.		12,196		2,622,750
JP Morgan Chase & Co.		77,356		3,376,589
Lehman Brothers Holdings, Inc.		21,724		1,421,619

	Number of Shares		Market Value
Merrill Lynch & Co., Inc.		20,876	$	1,120,624
Morgan Stanley		32,172		1,708,655
				13,074,905
Electric — 2.6%
Edison International		23,917		1,276,450
Exelon Corp.		9,731		794,439
FPL Group, Inc.		15,403		1,042,321
Progress Energy, Inc.		5,240		253,773
Reliant Energy, Inc.(b)		18,037		473,291
				3,840,274
Electronics — 0.9%
Avnet, Inc.(b)		28,054		981,048
Tyco Electronics Ltd.		7,391		274,428
Vishay Intertechnology, Inc.(b)		4,216		48,105
				1,303,581
Engineering & Construction — 0.1%
Jacobs Engineering Group, Inc.(b)		352		33,655
Perini Corp.(b)		3,279		135,816
				169,471
Entertainment — 0.2%
Regal Entertainment Group Cl. A(a)		18,780		339,355
Foods — 1.0%
General Mills, Inc.		24,295		1,384,815
Kraft Foods, Inc. Cl. A		2,673		87,220
				1,472,035
Forest Products & Paper — 0.1%
Potlatch Corp.		2,463		109,456
Health Care – Products — 4.8%
Baxter International, Inc.		12,695		736,945
Becton, Dickinson & Co.		22,339		1,867,094
Covidien Ltd.		7,391		327,347
Johnson & Johnson		63,551		4,238,852
				7,170,238
Health Care – Services — 3.3%
Aetna, Inc.		24,912		1,438,170
AMERIGROUP Corp.(a) (b)		24,338		887,120
Apria Healthcare Group, Inc.(b)		11,459		247,171
Humana, Inc.(b)		27,625		2,080,439
WellCare Health Plans, Inc.(a) (b)		7,505		318,287
				4,971,187

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Income & Growth Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Home Builders — 0.4%
NVR, Inc.(a) (b)		1,164	$	609,936
Household Products — 2.2%
Blyth, Inc.		5,070		111,236
Kimberly-Clark Corp.		33,821		2,345,148
Tupperware Brands Corp.		26,031		859,804
				3,316,188
Housewares — 0.3%
Newell Rubbermaid, Inc.		17,156		443,997
Insurance — 4.1%
ACE Ltd.		35,188		2,173,915
American International Group, Inc.		4,653		271,270
Arch Capital Group Ltd.(b)		11,102		781,026
Aspen Insurance Holdings Ltd.		21,234		612,389
Axis Capital Holdings Ltd.		9,028		351,821
Endurance Specialty Holdings Ltd.		23,870		996,095
PartnerRe Ltd.		4,327		357,107
St. Paul Travelers Cos.		6,750		363,150
XL Capital Ltd. Cl. A		4,934		248,230
				6,155,003
Internet — 0.4%
eBay, Inc.(b)		18,107		600,971
Iron & Steel — 0.3%
United States Steel Corp.		3,750		453,412
Machinery – Construction & Mining — 0.6%
Caterpillar, Inc.		11,616		842,857
Machinery – Diversified — 0.1%
Deere & Co.		1,786		166,312
Manufacturing — 2.0%
General Electric Co.		79,587		2,950,290
Media — 2.4%
CBS Corp. Cl. B		62,355		1,699,174
Sinclair Broadcast Group, Inc. Cl. A(a)		609		5,000
The Walt Disney Co.(a)		61,209		1,975,826
				3,680,000
Mining — 1.6%
Freeport-McMoran Copper & Gold, Inc.		19,482		1,995,736
Southern Copper Corp.(a)		4,593		482,862
				2,478,598
Office Equipment/Supplies — 1.2%
Xerox Corp.(a)		108,308		1,753,506

	Number of Shares		Market Value
Oil & Gas — 15.0%
Chevron Corp.		46,054	$	4,298,220
ConocoPhillips		41,118		3,630,719
Delek US Holdings, Inc.		403		8,153
EnCana Corp.(a)		21,650		1,471,334
Exxon Mobil Corp.		85,263		7,988,290
Occidental Petroleum Corp.		29,844		2,297,690
Tesoro Corp.(a)		11,860		565,722
Valero Energy Corp.		31,997		2,240,750
				22,500,878
Oil & Gas Services — 0.0%
Schlumberger Ltd.		807		79,385
Packaging & Containers — 0.1%
Sonoco Products Co.		3,412		111,504
Pharmaceuticals — 4.2%
Biovail Corp.		12,907		173,728
Bristol-Myers Squibb Co.		35,414		939,179
Eli Lilly & Co.		12,428		663,531
Gilead Sciences, Inc.(b)		2,772		127,540
Merck & Co., Inc.		10,424		605,739
Pfizer, Inc.		165,675		3,765,793
				6,275,510
Real Estate Investment Trusts (REITS) — 0.8%
Host Hotels & Resorts, Inc. REIT(a)		18,295		311,747
iStar Financial, Inc.(a)		12,067		314,345
KKR Financial Holdings LLC(a)		28,491		400,299
ProLogis		1,797		113,894
				1,140,285
Retail — 2.7%
AutoZone, Inc.(b)		1,110		133,100
Barnes & Noble, Inc.		5,583		192,334
Big Lots, Inc.(a) (b)		8,002		127,952
Gamestop Corp. Cl. A(b)		2,565		159,312
The Gap, Inc.		4,935		105,017
McDonald's Corp.		40,341		2,376,488
RadioShack Corp.(a)		53,420		900,661
				3,994,864
Savings & Loans — 0.2%
Washington Mutual, Inc.(a)		25,841		351,696
Semiconductors — 2.1%
Applied Materials, Inc.		46,368		823,496
ASM International NV(a)		555		13,292
Intel Corp.		66,089		1,761,933
Nvidia Corp.(b)		11,745		399,565
OmniVision Technologies, Inc.(a) (b)		10,925		170,976
				3,169,262

	Number of Shares		Market Value
Software — 3.8%
Adobe Systems, Inc.(b)		1,468	$	62,728
MasterCard, Inc. Cl. A(a)		1,872		402,854
Microsoft Corp.		140,088		4,987,133
Open Text Corp.(a) (b)		6,384		200,777
Oracle Corp.(b)		1,808		40,825
				5,694,317
Telecommunications — 4.1%
AT&T, Inc.		58,437		2,428,642
Cisco Systems, Inc.(b)		11,848		320,725
Embarq Corp.		1,235		61,170
Verizon Communications, Inc.		76,120		3,325,683
				6,136,220
Toys, Games & Hobbies — 0.6%
Hasbro, Inc.		34,808		890,389
Transportation — 2.6%
Burlington Northern Santa Fe Corp.		6,958		579,114
CSX Corp.		7,158		314,809
FedEx Corp.		4,743		422,933
Norfolk Southern Corp.		7,257		366,043
Overseas Shipholding Group, Inc.		2,758		205,278
Union Pacific Corp.		4,736		594,936
United Parcel Service, Inc. Cl. B		19,389		1,371,190
				3,854,303
TOTAL EQUITIES (Cost $139,223,465)				149,633,779
	Principal Amount
SHORT-TERM INVESTMENTS — 8.1%
Cash Equivalents(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	290,859		290,859
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		290,865		290,865
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		174,515		174,515
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		232,687		232,687

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Income & Growth Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008	$	232,687	$	232,687
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		145,430		145,430
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		145,430		145,430
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		407,203		407,203
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		232,687		232,687
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		174,515		174,515
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		145,430		145,430
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		174,515		174,515
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		174,515		174,515
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		174,515		174,515
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		174,515		174,515
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		232,687		232,687
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		290,859		290,859
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		1,236,151		1,236,151
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		232,687		232,687
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		174,515		174,515
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		145,430		145,430
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		261,773		261,773

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008	$	87,258	$	87,258
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		290,859		290,859
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		290,859		290,859
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		290,859		290,859
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		174,515		174,515
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		174,515		174,515
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		203,601		203,601
Reserve Primary Money Market Fund(c)		691,227		691,227
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		290,859		290,859
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		145,430		145,430
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		145,430		145,430
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		232,687		232,687
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		203,601		203,601
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		203,601		203,601
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		1,712,686		1,712,686
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		290,859		290,859
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		116,344		116,344

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008	$	290,859	$	290,859
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		290,859		290,859
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		145,430		145,430
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		203,601		203,601
				12,220,409
TOTAL SHORT-TERM INVESTMENTS (Cost $12,220,409)				12,220,409
TOTAL INVESTMENTS — 107.7% (Cost $151,443,874)(e)				161,854,188
Other Assets/ (Liabilities) — (7.7%)				(11,581,938	)
NET ASSETS — 100.0%			$	150,272,250

Notes to Portfolio of Investments

(a) Denotes all or a portion of security on loan. (Note 2).

(b) Non-income producing security.

(d) Represents investments of security lending collateral. (Note 2).

(e) See Note 6 for aggregate cost for Federal tax purpose.

The accompanying notes are an integral part of the financial statements.

MML Growth & Income Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.2%
COMMON STOCK — 98.5%
Advertising — 0.3%
Omnicom Group, Inc.		16,000	$	760,479
Aerospace & Defense — 1.8%
Boeing Co.		26,800		2,343,928
United Technologies Corp.		33,100		2,533,474
				4,877,402
Agriculture — 1.3%
Altria Group, Inc.		44,800		3,385,984
Airlines — 0.2%
Southwest Airlines Co.		39,400		480,680
Auto Manufacturers — 0.7%
Ford Motor Co.(a) (b)		207,300		1,395,129
General Motors Corp.(b)		25,100		624,739
				2,019,868
Automotive & Parts — 0.3%
Johnson Controls, Inc.		23,000		828,920
Banks — 3.4%
Capital One Financial Corp.		19,200		907,392
Fifth Third Bancorp		30,400		763,952
SunTrust Banks, Inc.		15,100		943,599
Wachovia Corp.		121,753		4,630,267
Wells Fargo & Co.		68,200		2,058,958
				9,304,168
Beverages — 2.1%
Anheuser-Busch Cos., Inc.		10,300		539,102
The Coca-Cola Co.		29,200		1,792,004
PepsiCo, Inc.		45,400		3,445,860
				5,776,966
Biotechnology — 2.5%
Genentech, Inc.(a)		77,100		5,171,097
Millennium Pharmaceuticals, Inc.(a)		98,000		1,468,040
				6,639,137
Building Materials — 0.1%
Owens Corning, Inc.(a) (b)		17,800		359,916
Chemicals — 1.9%
Celanese Corp. Cl. A		15,000		634,800
Monsanto Co.		9,600		1,072,224
Potash Corp. of Saskatchewan		23,300		3,354,268
				5,061,292

	Number of Shares		Market Value
Coal — 0.6%
Arch Coal, Inc.		17,100	$	768,303
Peabody Energy Corp.		15,900		980,076
				1,748,379
Commercial Services — 0.5%
Monster Worldwide, Inc.(a)		11,800		382,320
Moody's Corp.		23,800		849,660
				1,231,980
Computers — 3.9%
Affiliated Computer Services, Inc. Cl. A(a)		14,500		653,950
Apple, Inc.(a)		4,100		812,128
Brocade Communications Systems, Inc.(a)		119,000		873,460
Cognizant Technology Solutions Corp. Cl. A(a) (b)		13,400		454,796
Dell, Inc.(a)		46,400		1,137,264
Hewlett-Packard Co.		18,300		923,784
Network Appliance, Inc.(a)		11,000		274,560
Qimonda AG ADR (Germany)(a)		55,200		394,680
SanDisk Corp.(a)		91,500		3,035,055
Seagate Technology		49,800		1,269,900
Sun Microsystems, Inc.(a)		42,125		763,726
				10,593,303
Cosmetics & Personal Care — 0.3%
Avon Products, Inc.		11,800		466,454
The Estee Lauder Cos., Inc. Cl. A		7,400		322,714
				789,168
Diversified Financial — 6.6%
AmeriCredit Corp.(a) (b)		29,800		381,142
Fannie Mae		45,700		1,827,086
Freddie Mac		44,600		1,519,522
The Goldman Sachs Group, Inc.		19,000		4,085,950
IndyMac Bancorp, Inc.(b)		56,200		334,390
JP Morgan Chase & Co.		126,200		5,508,630
Lehman Brothers Holdings, Inc.		30,800		2,015,552
SLM Corp.		110,400		2,223,456
				17,895,728
Electric — 1.8%
AES Corp.(a)		26,700		571,113
Allegheny Energy, Inc.		11,600		737,876
CMS Energy Corp.(b)		56,000		973,280

	Number of Shares		Market Value
Edison International		31,900	$	1,702,503
Pinnacle West Capital Corp.		17,800		754,898
				4,739,670
Electrical Components & Equipment — 0.7%
Emerson Electric Co.		18,600		1,053,876
Energizer Holdings, Inc.(a)		7,100		796,123
				1,849,999
Electronics — 1.2%
Agilent Technologies, Inc.(a)		22,800		837,672
Flextronics International Ltd.(a)		70,400		849,024
Jabil Circuit, Inc.		95,900		1,464,393
				3,151,089
Engineering & Construction — 1.2%
Fluor Corp.		22,300		3,249,556
Foods — 2.6%
Campbell Soup Co.		21,000		750,330
General Mills, Inc.		7,900		450,300
Kraft Foods, Inc. Cl. A		80,701		2,633,274
Sara Lee Corp.		120,400		1,933,624
Unilever NV NY Shares (Netherlands)		34,900		1,272,454
				7,039,982
Health Care – Products — 2.2%
Baxter International, Inc.		64,100		3,721,005
Medtronic, Inc.		44,800		2,252,096
				5,973,101
Health Care – Services — 2.9%
DaVita, Inc.(a)		30,800		1,735,580
UnitedHealth Group, Inc.		103,300		6,012,060
				7,747,640
Home Builders — 0.1%
Lennar Corp. Cl. A(b)		15,100		270,139
Household Products — 0.3%
Fortune Brands, Inc.		8,300		600,588
Jarden Corp.(a)		12,900		304,569
				905,157
Insurance — 4.2%
AFLAC, Inc.		15,900		995,817
Ambac Financial Group, Inc.(b)		43,200		1,113,264
American International Group, Inc.		54,500		3,177,350

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Growth & Income Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Berkshire Hathaway, Inc. Cl. A(a)		14	$	1,982,400
Marsh & McLennan Cos., Inc.		58,700		1,553,789
MBIA, Inc.(b)		55,800		1,039,554
Progressive Corp.		34,900		668,684
XL Capital Ltd. Cl. A		16,900		850,239
				11,381,097
Internet — 4.9%
eBay, Inc.(a)		106,600		3,538,054
Google, Inc. Cl. A(a)		11,100		7,675,428
Yahoo!, Inc.(a)		91,800		2,135,268
				13,348,750
Investment Companies — 0.3%
American Capital Strategies Ltd.(b)		23,800		784,448
Iron & Steel — 0.2%
Allegheny Technologies, Inc.		4,000		345,600
Cleveland-Cliffs, Inc.		3,200		322,560
				668,160
Leisure Time — 0.2%
Carnival Corp.		9,700		431,553
Lodging — 0.9%
Las Vegas Sands Corp.(a)		17,500		1,803,375
Starwood Hotels & Resorts Worldwide, Inc.		12,700		559,181
				2,362,556
Machinery – Construction & Mining — 0.2%
Caterpillar, Inc.		7,900		573,224
Manufacturing — 4.3%
Cooper Industries Ltd. Cl. A		12,400		655,712
Danaher Corp.		20,800		1,824,992
General Electric Co.		149,600		5,545,672
Illinois Tool Works, Inc.		43,100		2,307,574
Siemens AG Sponsored ADR (Germany)		4,900		771,064
Tyco International Ltd.		10,900		432,185
				11,537,199
Media — 2.7%
CBS Corp. Cl. B		45,800		1,248,050
Comcast Corp. Cl. A(a)		29,400		536,844
Gannett Co., Inc.		18,400		717,600
Time Warner Cable, Inc. Cl. A(a)		23,600		651,360
Time Warner, Inc.		38,800		640,588
Viacom, Inc. Cl. B(a)		16,700		733,464
The Walt Disney Co.		89,200		2,879,376
				7,407,282

	Number of Shares		Market Value
Mining — 1.9%
Barrick Gold Corp.(b)		78,200	$	3,288,310
Freeport-McMoran Copper & Gold, Inc.		7,700		788,788
Newmont Mining Corp.		20,800		1,015,664
				5,092,762
Oil & Gas — 4.1%
Anadarko Petroleum Corp.		6,400		420,416
Chevron Corp.		12,600		1,175,958
ConocoPhillips		15,300		1,350,990
EOG Resources, Inc.		6,600		589,050
Exxon Mobil Corp.		26,000		2,435,940
Royal Dutch Shell PLC Sponsored ADR (United Kingdom)(b)		59,600		5,018,320
				10,990,674
Oil & Gas Services — 3.5%
Baker Hughes, Inc.		18,800		1,524,680
BJ Services Co.		70,800		1,717,608
Schlumberger Ltd.		42,000		4,131,540
Weatherford International Ltd.(a)		31,000		2,126,600
				9,500,428
Pharmaceuticals — 7.6%
Abbott Laboratories		21,000		1,179,150
Allergan, Inc.		32,800		2,107,072
AstraZeneca PLC Sponsored ADR (United Kingdom)		70,800		3,031,656
Bristol-Myers Squibb Co.		52,800		1,400,256
Forest Laboratories, Inc.(a)		77,700		2,832,165
ImClone Systems, Inc.(a)		50,800		2,184,400
Pfizer, Inc.		64,000		1,454,720
Sanofi-Aventis Sponsored ADR (France)		59,700		2,718,141
Sepracor, Inc.(a)		40,000		1,050,000
Teva Pharmaceutical Sponsored ADR (Israel)		38,500		1,789,480
Wyeth		17,100		755,649
				20,502,689
Real Estate Investment Trusts (REITS) — 0.2%
Douglas Emmett, Inc. REIT		16,600		375,326
Host Hotels & Resorts, Inc. REIT(b)		14,600		248,784
				624,110
Retail — 6.9%
Best Buy Co., Inc.		64,800		3,411,720
Coach, Inc.(a)		11,700		357,786
Costco Wholesale Corp.		13,200		920,832
Hanesbrands, Inc.(a)		55,275		1,501,822

	Number of Shares		Market Value
The Home Depot, Inc.		37,300	$	1,004,862
Lowe's Companies, Inc.		150,200		3,397,524
McDonald's Corp.		17,400		1,025,034
Nordstrom, Inc.		17,500		642,775
Starbucks Corp.(a)		26,000		532,220
Target Corp.		97,500		4,875,000
Urban Outfitters, Inc.(a) (b)		30,100		820,526
				18,490,101
Savings & Loans — 1.5%
Hudson City Bancorp, Inc.		142,500		2,140,350
Washington Mutual, Inc.(b)		133,000		1,810,130
				3,950,480
Semiconductors — 4.9%
Altera Corp.		82,800		1,599,696
Applied Materials, Inc.		180,700		3,209,232
ASML Holding NV(a) (b)		16,088		503,393
Intel Corp.		56,100		1,495,626
KLA-Tencor Corp.		69,500		3,347,120
Lam Research Corp.(a)		13,700		592,251
Linear Technology Corp.(b)		16,800		534,744
Micron Technology, Inc.(a)		231,800		1,680,550
Silicon Laboratories, Inc.(a)		4,800		179,664
				13,142,276
Software — 2.7%
Cerner Corp.(a) (b)		13,800		778,320
Microsoft Corp.		102,200		3,638,320
Oracle Corp.(a)		41,700		941,586
Paychex, Inc.		13,200		478,104
SAP AG Sponsored ADR (Germany)(b)		12,700		648,335
VeriFone Holdings, Inc.(a) (b)		29,900		695,175
				7,179,840
Telecommunications — 5.8%
American Tower Corp. Cl. A(a)		24,100		1,026,660
AT&T, Inc.		66,100		2,747,116
Ciena Corp.(a) (b)		9,600		327,456
Cisco Systems, Inc.(a)		152,900		4,139,003
Corning, Inc.		24,500		587,755
Level 3 Communications, Inc.(a) (b)		204,000		620,160
Polycom, Inc.(a)		22,000		611,160
Qualcomm, Inc.		77,400		3,045,690
Time Warner Telecom, Inc. Cl. A(a)		90,600		1,838,274
Verizon Communications, Inc.		13,900		607,291
				15,550,565

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Growth & Income Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Transportation — 2.0%
FedEx Corp.		11,500	$	1,025,455
United Parcel Service, Inc. Cl. B		63,700		4,504,864
				5,530,319
TOTAL COMMON STOCK (Cost $267,957,454)				265,728,216
PREFERRED STOCK — 0.7%
Diversified Financial — 0.1%
SLM Corp. Preferred, Convertible		170		170,000
Pharmaceuticals — 0.2%
Schering-Plough Corp. Preferred, Convertible		2,400		582,300
Savings & Loans — 0.4%
Washington Mutual, Inc. Preferred, Convertible(b)		1,240		1,097,400
TOTAL PREFERRED STOCK (Cost $1,996,181)				1,849,700
TOTAL EQUITIES (Cost $269,953,635)				267,577,916
	Principal Amount
BONDS & NOTES — 0.3%
CORPORATE DEBT — 0.3%
Auto Manufacturers Ford Motor Co. 4.250% 12/15/2036	$	729,000		724,444
TOTAL CORPORATE DEBT (Cost $733,530)				724,444
TOTAL BONDS & NOTES (Cost $733,530)				724,444
TOTAL LONG TERM INVESTMENTS (Cost $270,687,165)				268,302,360
SHORT-TERM INVESTMENTS — 7.8%
Cash Equivalents — 7.5%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008		483,344		483,344
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		483,338		483,338

	Principal Amount		Market Value
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008	$	290,006	$	290,006
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		386,675		386,675
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		386,675		386,675
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		241,672		241,672
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		241,672		241,672
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		676,681		676,681
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		386,675		386,675
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		290,006		290,006
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		241,672		241,672
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		290,006		290,006
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		290,006		290,006
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		290,006		290,006
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		290,006		290,006
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		386,675		386,675
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		483,344		483,344
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		2,054,210		2,054,210
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		386,675		386,675
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		290,006		290,006

	Principal Amount		Market Value
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008	$	241,672	$	241,672
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		435,009		435,009
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		145,003		145,003
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		483,344		483,344
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		483,344		483,344
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		483,344		483,344
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		290,006		290,006
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		290,006		290,006
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		338,341		338,341
Reserve Primary Money Market Fund(c)		1,148,667		1,148,667
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		483,344		483,344
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		241,672		241,672
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		241,672		241,672
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		386,675		386,675
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		338,341		338,341
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		338,341		338,341
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		2,846,106		2,846,106

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Growth & Income Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008	$	483,344	$	483,344
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		193,337		193,337
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		483,344		483,344
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		483,344		483,344
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		241,672		241,672
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		338,341		338,341
				20,307,619
Repurchase Agreements — 0.3%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		847,108		847,108
TOTAL SHORT-TERM INVESTMENTS (Cost $21,154,727)				21,154,727
TOTAL INVESTMENTS — 107.3% (Cost $291,841,892)(f)				289,457,087
Other Assets/ (Liabilities) — (7.3%)				(19,654,360	)
NET ASSETS — 100.0%			$	269,802,727

Notes to Portfolio of Investments

ADR - American Depository Receipt

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $847,228. Collateralized by a U.S. Government Agency obligation with a rate of 4.819%, maturity date of 10/01/2035, and an aggregate market value, including accrued interest, of $865,376.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

MML Blue Chip Growth Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.2%
COMMON STOCK — 99.2%
Advertising — 0.6%
Omnicom Group, Inc.		7,500	$	356,475
Aerospace & Defense — 2.6%
General Dynamics Corp.		10,000		889,900
Lockheed Martin Corp.		800		84,208
Rockwell Collins, Inc.		3,500		251,895
United Technologies Corp.		4,900		375,046
				1,601,049
Auto Manufacturers — 0.1%
Paccar, Inc.		1,000		54,480
Banks — 3.9%
The Bank of New York Mellon Corp.		9,500		463,220
Northern Trust Corp.		7,700		589,666
State Street Corp.		16,700		1,356,040
				2,408,926
Beverages — 0.5%
PepsiCo, Inc.		4,200		318,780
Biotechnology — 1.7%
Celgene Corp.(a) (b)		7,400		341,954
Genentech, Inc.(a)		10,400		697,528
				1,039,482
Chemicals — 1.7%
Monsanto Co.(b)		8,200		915,858
Praxair, Inc.		1,200		106,452
				1,022,310
Commercial Services — 1.6%
Accenture Ltd. Cl. A		9,100		327,873
Apollo Group, Inc. Cl. A(a)		1,400		98,210
Fastenal Co.(b)		300		12,126
McKesson Corp.		4,800		314,448
Monster Worldwide, Inc.(a)		7,600		246,240
				998,897
Computers — 4.6%
Apple, Inc.(a)		7,500		1,485,600
Dell, Inc.(a)		17,700		433,827
EMC Corp.(a)		27,200		504,016
Hewlett-Packard Co.		7,800		393,744
Network Appliance, Inc.(a)		500		12,480
				2,829,667
Cosmetics & Personal Care — 1.3%
The Procter & Gamble Co.		10,600		778,252

	Number of Shares		Market Value
Diversified Financial — 8.3%
American Express Co.		13,900	$	723,078
Ameriprise Financial, Inc.		6,800		374,748
BlackRock, Inc.(b)		500		108,400
The Charles Schwab Corp.		26,100		666,855
CME Group, Inc.		700		480,200
Franklin Resources, Inc.		7,300		835,339
The Goldman Sachs Group, Inc.		3,900		838,695
IntercontinentalExchange, Inc.(a)		100		19,250
Merrill Lynch & Co., Inc.		4,100		220,088
Morgan Stanley		7,800		414,258
UBS AG Registered CHF		9,735		455,103
				5,136,014
Electronics — 0.2%
Thermo Fisher Scientific, Inc.(a)		2,200		126,896
Engineering & Construction — 1.7%
Foster Wheeler Ltd.(a)		4,300		666,586
McDermott International, Inc.(a)		6,500		383,695
				1,050,281
Entertainment — 0.3%
International Game Technology		4,700		206,471
Foods — 0.3%
Sysco Corp.		5,800		181,018
Health Care – Products — 3.6%
Alcon, Inc.		2,500		357,600
Baxter International, Inc.		3,100		179,955
Medtronic, Inc.		12,400		623,348
St. Jude Medical, Inc.(a)		12,300		499,872
Stryker Corp.		7,100		530,512
				2,191,287
Health Care – Services — 4.2%
Aetna, Inc.		13,400		773,582
Humana, Inc.(a)		4,600		346,426
Laboratory Corp. of America Holdings(a)		6,200		468,286
UnitedHealth Group, Inc.		4,900		285,180
WellPoint, Inc.(a)		8,500		745,705
				2,619,179
Insurance — 1.7%
American International Group, Inc.		4,800		279,840
Cigna Corp.		900		48,357

	Number of Shares		Market Value
The Hartford Financial Services Group, Inc.		1,100	$	95,909
Prudential Financial, Inc.		6,400		595,456
				1,019,562
Internet — 6.7%
Alibaba.com Ltd. HKD(a)		5,000		17,731
Amazon.com, Inc.(a)		13,400		1,241,376
eBay, Inc.(a)		14,600		484,574
Google, Inc. Cl. A(a)		2,900		2,005,292
McAfee, Inc.(a)		1,900		71,250
VeriSign, Inc.(a)		8,200		308,402
Yahoo!, Inc.(a)		1,400		32,564
				4,161,189
Lodging — 1.7%
Las Vegas Sands Corp.(a) (b)		2,500		257,625
Marriott International, Inc. Cl. A		9,700		331,546
MGM Mirage(a)		3,400		285,668
Wynn Resorts Ltd.		1,800		201,834
				1,076,673
Manufacturing — 6.0%
Danaher Corp.		17,200		1,509,128
General Electric Co.		53,000		1,964,710
Illinois Tool Works, Inc.		4,800		256,992
				3,730,830
Media — 1.9%
Discovery Holding Co. Cl. A(a)		5,400		135,756
The McGraw-Hill Cos., Inc.(b)		5,900		258,479
Rogers Communications, Inc. Cl. B(b)		13,000		588,250
Shaw Communications, Inc. Cl. B(b)		4,700		111,296
Viacom, Inc. Cl. B(a)		2,000		87,840
				1,181,621
Mining — 1.1%
Freeport-McMoran Copper & Gold, Inc.		6,900		706,836
Oil & Gas — 2.9%
EOG Resources, Inc.		500		44,625
Exxon Mobil Corp.		7,500		702,675
Murphy Oil Corp.		6,600		559,944
Total SA Sponsored ADR (France)		5,900		487,340
				1,794,584

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Blue Chip Growth Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Oil & Gas Services — 5.5%
Baker Hughes, Inc.		8,500	$	689,350
Schlumberger Ltd.		16,300		1,603,431
Smith International, Inc.		15,000		1,107,750
				3,400,531
Pharmaceuticals — 7.1%
Allergan, Inc.		8,800		565,312
Cardinal Health, Inc.		3,900		225,225
Express Scripts, Inc.(a)		6,300		459,900
Gilead Sciences, Inc.(a)		22,400		1,030,624
Medco Health Solutions, Inc.(a)		5,100		517,140
Merck & Co., Inc.		9,900		575,289
Novartis AG CHF		522		28,627
Roche Holding AG CHF		2,740		475,116
Schering-Plough Corp.		12,600		335,664
Wyeth		4,400		194,436
				4,407,333
Retail — 5.9%
Bed Bath & Beyond, Inc.(a) (b)		7,100		208,669
Coach, Inc.(a)		10,600		324,148
Costco Wholesale Corp.		2,300		160,448
CVS Caremark Corp.		29,859		1,186,895
Kohl's Corp.(a)		14,500		664,100
McDonald's Corp.		3,300		194,403
Target Corp.		9,100		455,000
Wal-Mart Stores, Inc.		8,800		418,264
				3,611,927
Semiconductors — 3.9%
Analog Devices, Inc.		10,200		323,340
ASML Holding NV(a)		1,788		55,946
Broadcom Corp. Cl. A(a)		4,900		128,086
Intel Corp.		21,200		565,192
Marvell Technology Group Ltd.(a)		30,200		422,196
Maxim Integrated Products, Inc.		9,400		248,912
Texas Instruments, Inc.		7,200		240,480
Xilinx, Inc.		19,100		417,717
				2,401,869
Software — 7.7%
Adobe Systems, Inc.(a)		7,100		303,383
Autodesk, Inc.(a)		8,200		408,032
Automatic Data Processing, Inc.		15,000		667,950
Electronic Arts, Inc.(a) (b)		9,800		572,418
Fiserv, Inc.(a)		2,300		127,627
Intuit, Inc.(a)		7,900		249,719
MasterCard, Inc. Cl. A(b)		400		86,080
Microsoft Corp.		50,100		1,783,560

	Number of Shares		Market Value
Oracle Corp.(a)		21,500	$	485,470
TomTom NV EUR(a)		480		36,110
				4,720,349
Telecommunications — 9.2%
America Movil SAB de CV Sponsored ADR (Mexico)		14,500		890,155
American Tower Corp. Cl. A(a)		18,300		779,580
AT&T, Inc.		11,300		469,628
Cisco Systems, Inc.(a)		38,700		1,047,609
Corning, Inc.		16,400		393,436
Juniper Networks, Inc.(a)		26,800		889,760
MetroPCS Communications, Inc.(a) (b)		4,500		87,525
Nokia Oyj Sponsored ADR (Finland)		19,200		737,088
Qualcomm, Inc.		9,700		381,695
				5,676,476
Toys, Games & Hobbies — 0.4%
Nintendo Co., Ltd. JPY		400		242,187
Transportation — 0.3%
Expeditors International of Washington, Inc.		3,500		156,380
TOTAL EQUITIES (Cost $51,217,976)				61,207,811
	Principal Amount
SHORT-TERM INVESTMENTS — 6.0%
Cash Equivalents — 5.2%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	76,270		76,270
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		76,270		76,270
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		45,762		45,762
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		61,013		61,013
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		61,016		61,016
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		38,135		38,135

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008	$	38,135	$	38,135
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		106,778		106,778
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		61,016		61,016
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		45,762		45,762
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		38,135		38,135
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		45,762		45,762
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		45,762		45,762
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		45,762		45,762
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		45,762		45,762
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		61,016		61,016
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		76,270		76,270
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		324,147		324,147
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		61,016		61,016
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		45,762		45,762
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		38,135		38,135
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		68,643		68,643
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		22,881		22,881

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Blue Chip Growth Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008	$	76,270	$	76,270
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		76,270		76,270
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		76,270		76,270
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		45,762		45,762
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		45,762		45,762
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		53,389		53,389
Reserve Primary Money Market Fund(c)		181,256		181,256
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		76,270		76,270
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		38,135		38,135
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		38,135		38,135
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		61,016		61,016
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		53,389		53,389
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		53,389		53,389
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		449,106		449,106
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		76,270		76,270
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		30,508		30,508
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		76,270		76,270

	Principal Amount		Market Value
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008	$	76,270	$	76,270
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		38,135		38,135
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		53,389		53,389
				3,204,471
Repurchase Agreements — 0.8%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		515,998		515,998
TOTAL SHORT-TERM INVESTMENTS (Cost $3,720,469)				3,720,469
TOTAL INVESTMENTS — 105.2% (Cost $54,938,445)(f)				64,928,280
Other Assets/ (Liabilities) — (5.2%)				(3,226,878	)
NET ASSETS — 100.0%			$	61,701,402

Notes to Portfolio of Investments

ADR - American Depository Receipt

CHF - Swiss Franc

EUR - Euro

HKD - Hong Kong Dollar

JPY - Japanese Yen

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $516,071. Collateralized by a U.S. Government Agency obligation with a rate of 5.215%, maturity date of 07/01/2035, and an aggregate market value, including accrued interest, of $529,110.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Large Cap Growth Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.7%
COMMON STOCK — 99.7%
Aerospace & Defense — 2.0%
Boeing Co.		4,560	$	398,818
Spirit AeroSystems Holdings, Inc. Cl. A(a)		32,100		1,107,450
				1,506,268
Beverages — 2.5%
The Coca-Cola Co.		9,300		570,741
PepsiCo, Inc.		17,350		1,316,865
				1,887,606
Biotechnology — 3.5%
Celgene Corp.(a) (b)		27,150		1,254,601
Genentech, Inc.(a)		19,520		1,309,206
				2,563,807
Chemicals — 4.3%
Air Products & Chemicals, Inc.		11,100		1,094,793
Monsanto Co.(b)		18,750		2,094,187
				3,188,980
Computers — 12.4%
Apple, Inc.(a)		22,890		4,534,051
EMC Corp.(a)		25,600		474,368
Hewlett-Packard Co.		53,800		2,715,824
Research In Motion Ltd.(a)		12,940		1,467,396
				9,191,639
Cosmetics & Personal Care — 2.6%
Colgate-Palmolive Co.		9,125		711,385
The Procter & Gamble Co.		16,040		1,177,657
				1,889,042
Diversified Financial — 10.6%
American Express Co.		13,500		702,270
The Blackstone Group LP(b)		48,925		1,082,710
CME Group, Inc.		3,355		2,301,530
Franklin Resources, Inc.		19,435		2,223,947
The Goldman Sachs Group, Inc.		1,375		295,694
Lehman Brothers Holdings, Inc.		6,000		392,640
NYSE Euronext		9,950		873,311
				7,872,102
Electrical Components & Equipment — 0.5%
Emerson Electric Co.		7,000		396,620

	Number of Shares		Market Value
Electronics — 0.5%
Agilent Technologies, Inc.(a)		10,600	$	389,444
Engineering & Construction — 2.7%
ABB Ltd. Sponsored ADR (Switzerland)		17,850		514,080
Fluor Corp.		10,300		1,500,916
				2,014,996
Foods — 1.3%
Wrigley (Wm.) Jr. Co.		16,350		957,293
Health Care – Products — 3.7%
Alcon, Inc.		12,355		1,767,259
Hologic, Inc.(a) (b)		14,300		981,552
				2,748,811
Health Care – Services — 2.9%
WellPoint, Inc.(a)		24,600		2,158,158
Internet — 6.8%
Google, Inc. Cl. A(a)		7,275		5,030,517
Lodging — 0.4%
Starwood Hotels & Resorts Worldwide, Inc.		6,230		274,307
Machinery – Diversified — 2.5%
Deere & Co.		19,840		1,847,501
Manufacturing — 4.6%
Honeywell International, Inc.		36,150		2,225,756
Textron, Inc.		16,750		1,194,275
				3,420,031
Media — 0.8%
Comcast Corp. Special, Cl. A(a)		30,625		554,925
Oil & Gas — 1.6%
EOG Resources, Inc.		13,200		1,178,100
Oil & Gas Services — 6.9%
Baker Hughes, Inc.		26,150		2,120,765
Cameron International Corp.(a)		12,700		611,251
Schlumberger Ltd.		24,350		2,395,310
				5,127,326
Pharmaceuticals — 10.2%
Abbott Laboratories		40,075		2,250,211
Gilead Sciences, Inc.(a)		54,220		2,494,662
Medco Health Solutions, Inc.(a)		6,200		628,680
Merck & Co., Inc.		5,700		331,227

	Number of Shares		Market Value
Schering-Plough Corp.		21,550	$	574,092
Teva Pharmaceutical Sponsored ADR (Israel)		27,900		1,296,792
				7,575,664
Retail — 3.4%
Kohl's Corp.(a)		18,900		865,620
McDonald's Corp.		10,750		633,283
Target Corp.		12,335		616,750
Yum! Brands, Inc.		9,900		378,873
				2,494,526
Semiconductors — 5.7%
Broadcom Corp. Cl. A(a)		52,800		1,380,192
Intel Corp.		53,560		1,427,910
Nvidia Corp.(a)		42,550		1,447,551
				4,255,653
Software — 1.6%
Adobe Systems, Inc.(a)		28,500		1,217,805
Telecommunications — 5.7%
America Movil SAB de CV Sponsored ADR (Mexico)		3,100		190,309
Cisco Systems, Inc.(a)		111,800		3,026,426
Nokia Oyj Sponsored ADR (Finland)		27,200		1,044,208
				4,260,943
TOTAL EQUITIES (Cost $64,149,247)				74,002,064
	Principal Amount
SHORT-TERM INVESTMENTS — 7.7%
Cash Equivalents — 7.5%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	131,394		131,394
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		131,394		131,394
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		78,837		78,837
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		105,115		105,115
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		105,115		105,115

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Large Cap Growth Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008	$	65,697	$	65,697
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		65,697		65,697
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		183,952		183,952
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		105,115		105,115
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		78,837		78,837
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		65,697		65,697
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		78,837		78,837
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		78,837		78,837
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		78,837		78,837
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		78,837		78,837
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		105,115		105,115
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		131,394		131,394
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		558,426		558,426
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		105,116		105,116
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		78,837		78,837
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		65,697		65,697
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		118,255		118,255
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		39,418		39,418

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008	$	131,394	$	131,394
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		131,394		131,394
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		131,394		131,394
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		78,837		78,837
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		78,837		78,837
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		91,976		91,976
Reserve Primary Money Market Fund(c)		312,259		312,259
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		131,394		131,394
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		65,697		65,697
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		65,697		65,697
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		105,115		105,115
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		91,976		91,976
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		91,976		91,976
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		773,698		773,698
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		131,394		131,394
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		52,558		52,558
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		131,394		131,394
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		131,394		131,394

	Principal Amount		Market Value
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008	$	65,697	$	65,697
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		91,976		91,976
				5,520,513
Repurchase Agreements — 0.2%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		167,414		167,414
TOTAL SHORT-TERM INVESTMENTS (Cost $5,687,927)				5,687,927
TOTAL INVESTMENTS — 107.4% (Cost $69,837,174)(f)				79,689,991
Other Assets/ (Liabilities) — (7.4%)				(5,464,840	)
NET ASSETS — 100.0%			$	74,225,151

Notes to Portfolio of Investments

ADR - American Depository Receipt

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $167,438. Collateralized by a U.S. Government Agency obligation with a rate of 5.215%, maturity date of 12/25/2035, and an aggregate market value, including accrued interest, of $170,943.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Concentrated Growth Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 96.8%
COMMON STOCK — 96.8%
Commercial Services — 3.2%
Quanta Services, Inc.(a) (b)		103,000	$	2,702,720
Diversified Financial — 6.3%
IntercontinentalExchange, Inc.(a)		14,500		2,791,250
The Nasdaq Stock Market, Inc.(a)		52,100		2,578,429
				5,369,679
Electrical Components & Equipment — 3.5%
General Cable Corp.(a)		27,500		2,015,200
Vestas Wind Systems A/S(a)		9,500		1,022,108
				3,037,308
Electronics — 2.0%
Thomas & Betts Corp.(a)		34,500		1,691,880
Engineering & Construction — 11.7%
Fluor Corp.		24,300		3,540,996
Foster Wheeler Ltd.(a)		20,000		3,100,400
The Shaw Group, Inc.(a) (b)		55,800		3,372,552
				10,013,948
Foods — 3.1%
Cadbury Schweppes PLC, Sponsored ADR (United Kingdom)		19,000		938,030
Kraft Foods, Inc. Cl. A		51,900		1,693,497
				2,631,527
Insurance — 2.4%
American International Group, Inc.		34,700		2,023,010
Internet — 24.3%
Amazon.com, Inc.(a)		57,600		5,336,064
eBay, Inc.(a)		132,400		4,394,356
Expedia, Inc.(a)		57,500		1,818,150
Google, Inc. Cl. A(a)		3,450		2,385,606
Yahoo!, Inc.(a)		295,300		6,868,678
				20,802,854
Machinery – Construction & Mining — 2.2%
Caterpillar, Inc.		25,900		1,879,304
Manufacturing — 3.7%
General Electric Co.		86,000		3,188,020

	Number of Shares		Market Value
Media — 4.0%
XM Satellite Radio Holdings, Inc. Cl. A(a)		281,500	$	3,445,560
Semiconductors — 3.7%
Texas Instruments, Inc.		96,100		3,209,740
Software — 6.3%
Electronic Arts, Inc.(a) (b)		60,800		3,551,328
Red Hat, Inc.(a) (b)		90,100		1,877,684
				5,429,012
Telecommunications — 16.1%
Cisco Systems, Inc.(a)		69,500		1,881,365
Nokia Oyj Sponsored ADR (Finland)		160,800		6,173,112
Qualcomm, Inc.		145,800		5,737,230
				13,791,707
Transportation — 2.3%
FedEx Corp.		22,100		1,970,657
Water — 2.0%
Veolia Environment		18,900		1,727,796
TOTAL EQUITIES (Cost $72,639,958)				82,914,722
	Principal Amount
SHORT-TERM INVESTMENTS — 8.7%
Cash Equivalents — 5.7%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	115,692		115,692
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		115,691		115,691
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		69,413		69,413
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		92,551		92,551
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		92,551		92,551
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		57,845		57,845

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008	$	57,845	$	57,845
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		161,965		161,965
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		92,551		92,551
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		69,413		69,413
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		57,845		57,845
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		69,413		69,413
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		69,413		69,413
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		69,413		69,413
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		69,413		69,413
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		92,551		92,551
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		115,689		115,689
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		491,679		491,679
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		92,551		92,551
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		69,413		69,413
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		57,845		57,845
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		104,120		104,120
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		34,707		34,707

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Concentrated Growth Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008	$	115,689	$	115,689
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		115,689		115,689
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		115,689		115,689
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		69,413		69,413
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		69,413		69,413
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		80,982		80,982
Reserve Primary Money Market Fund(c)		274,935		274,935
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		115,689		115,689
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		57,845		57,845
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		57,845		57,845
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		92,551		92,551
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		80,982		80,982
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		80,982		80,982
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		681,220		681,220
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		115,689		115,689
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		46,276		46,276

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008	$	115,689	$	115,689
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		115,689		115,689
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		57,845		57,845
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		80,982		80,982
				4,860,663
Repurchase Agreements — 3.0%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		2,577,160		2,577,160
TOTAL SHORT-TERM INVESTMENTS (Cost $7,437,823)				7,437,823
TOTAL INVESTMENTS — 105.5% (Cost $80,077,781)(f)				90,352,545
Other Assets/ (Liabilities) — (5.5%)				(4,737,190	)
NET ASSETS — 100.0%			$	85,615,355

Notes to Portfolio of Investments

ADR - American Depository Receipt

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $2,577,525. Collateralized by a U.S. Government Agency obligation with a rate of 5.215%, maturity date of 12/25/2035, and an aggregate market value, including accrued interest, of $2,629,272.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Value Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 92.4%
COMMON STOCK — 92.4%
Airlines — 1.6%
Southwest Airlines Co.		541,040	$	6,600,688
Auto Manufacturers — 0.8%
Bayerische Motoren Werke AG EUR		52,300		3,250,880
Automotive & Parts — 0.8%
Autoliv, Inc.		59,617		3,142,412
Banks — 7.1%
Associated Banc-Corp		99,600		2,698,164
Commerce Bancshares, Inc.		60,375		2,708,423
Marshall & Ilsley Corp.(a)		255,184		6,757,272
Peoples United Financial		87,600		1,559,280
The South Financial Group, Inc.(a)		225,114		3,518,532
SunTrust Banks, Inc.		142,444		8,901,326
United Bankshares, Inc.		38,700		1,084,374
Zions Bancorp		32,600		1,522,094
				28,749,465
Beverages — 1.3%
Anheuser-Busch Cos., Inc.		87,409		4,574,987
Coca-Cola Enterprises, Inc.		30,220		786,627
				5,361,614
Building Materials — 0.8%
Masco Corp.		145,233		3,138,485
Chemicals — 0.9%
Minerals Technologies, Inc.(a)		39,381		2,636,558
Rohm & Haas Co.(a)		20,600		1,093,242
				3,729,800
Computers — 1.1%
Diebold, Inc.		84,915		2,460,837
Synopsys, Inc.(b)		75,435		1,956,030
				4,416,867
Cosmetics & Personal Care — 0.6%
The Estee Lauder Cos., Inc. Cl. A		53,000		2,311,330
Distribution & Wholesale — 0.6%
Genuine Parts Co.		50,518		2,338,983
Diversified Financial — 3.1%
Ameriprise Financial, Inc.		27,400		1,510,014
The Bear Stearns Cos., Inc.(a)		22,000		1,941,500

	Number of Shares		Market Value
Freddie Mac		190,862	$	6,502,668
Legg Mason, Inc.		16,000		1,170,400
Merrill Lynch & Co., Inc.		28,600		1,535,248
				12,659,830
Electric — 8.9%
Consolidated Edison, Inc.		31,700		1,548,545
The Empire District Electric Co.		49,329		1,123,715
Idacorp, Inc.		20,788		732,153
Portland General Electric Co.		404,476		11,236,343
Puget Energy, Inc.		424,536		11,645,023
Sierra Pacific Resources		112,900		1,917,042
Westar Energy, Inc.		132,800		3,444,832
Wisconsin Energy Corp.		54,848		2,671,646
Xcel Energy, Inc.		68,500		1,546,045
				35,865,344
Electrical Components & Equipment — 2.7%
Hubbell, Inc. Cl. B		59,500		3,070,200
Littelfuse, Inc.(b)		83,242		2,743,656
Molex, Inc.		184,784		5,044,603
				10,858,459
Electronics — 1.7%
Tyco Electronics Ltd.		123,363		4,580,468
Vishay Intertechnology, Inc.(b)		206,300		2,353,883
				6,934,351
Entertainment — 5.0%
International Speedway Corp. Cl. A		266,986		10,994,483
Speedway Motorsports, Inc.		292,185		9,081,110
				20,075,593
Environmental Controls — 1.9%
Republic Services, Inc.		50,928		1,596,593
Waste Management, Inc.		193,112		6,308,969
				7,905,562
Foods — 9.6%
Campbell Soup Co.		98,100		3,505,113
ConAgra Foods, Inc.		416,809		9,915,886
Diamond Foods, Inc.		105,941		2,270,316
General Mills, Inc.		47,600		2,713,200
Heinz (H. J.) Co.		107,361		5,011,611
The Hershey Co.(a)		108,395		4,270,763
Kellogg Co.		21,500		1,127,245
Kraft Foods, Inc. Cl. A		228,284		7,448,907
Maple Leaf Foods, Inc. CAD		164,300		2,481,797
				38,744,838

	Number of Shares		Market Value
Forest Products & Paper — 0.8%
MeadWestvaco Corp.		35,508	$	1,111,400
Rayonier, Inc.		31,700		1,497,508
Weyerhaeuser Co.		11,055		815,196
				3,424,104
Gas — 4.2%
AGL Resources, Inc.		62,600		2,356,264
Nicor, Inc.(a)		17,100		724,185
Piedmont Natural Gas Co., Inc.		11,675		305,418
Southwest Gas Corp.		350,957		10,447,990
WGL Holdings, Inc.		103,784		3,399,964
				17,233,821
Health Care – Products — 3.8%
Beckman Coulter, Inc.		84,913		6,181,666
Boston Scientific Corp.(b)		129,000		1,500,270
Covidien Ltd.		42,200		1,869,038
Steris Corp.		25,300		729,652
Symmetry Medical, Inc.(b)		237,407		4,138,004
Zimmer Holdings, Inc.(b)		17,400		1,151,010
				15,569,640
Health Care – Services — 2.3%
LifePoint Hospitals, Inc.(a) (b)		159,000		4,728,660
Universal Health Services, Inc. Cl. B		90,312		4,623,974
				9,352,634
Home Builders — 0.8%
Winnebago Industries, Inc.(a)		147,029		3,090,550
Home Furnishing — 0.7%
Whirlpool Corp.		33,600		2,742,768
Household Products — 4.1%
Avery Dennison Corp.		101,900		5,414,966
Kimberly-Clark Corp.		162,806		11,288,968
				16,703,934
Housewares — 0.8%
Hunter Douglas NV EUR		43,000		3,192,430
Insurance — 6.6%
Allstate Corp.		108,001		5,640,892
Chubb Corp.		42,800		2,336,024
Gallagher (Arthur J.) & Co.		93,864		2,270,570
Genworth Financial, Inc. Cl. A		139,524		3,550,886
The Hartford Financial Services Group, Inc.		30,788		2,684,406

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Value Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Horace Mann Educators Corp.(a)		141,220	$	2,674,707
Marsh & McLennan Cos., Inc.		223,067		5,904,584
MBIA, Inc.		82,300		1,533,249
				26,595,318
Machinery – Diversified — 1.4%
Altra Holdings, Inc.(b)		346,390		5,760,466
Manufacturing — 0.6%
Dover Corp.		53,000		2,442,770
Office Equipment/Supplies — 1.3%
Pitney Bowes, Inc.(a)		141,901		5,397,914
Office Furnishings — 1.2%
HNI Corp.(a)		133,590		4,683,665
Oil & Gas — 1.0%
Apache Corp.		28,494		3,064,245
St. Mary Land & Exploration Co.		28,484		1,099,767
				4,164,012
Packaging & Containers — 3.0%
Bemis Co., Inc.(a)		451,894		12,372,858
Pharmaceuticals — 1.3%
Bristol-Myers Squibb Co.		85,000		2,254,200
Watson Pharmaceutical, Inc.(b)		116,036		3,149,217
				5,403,417
Pipelines — 0.8%
Equitable Resources, Inc.		59,769		3,184,492
Real Estate Investment Trusts (REITS) — 0.8%
Education Realty Trust, Inc. REIT(a)		299,983		3,371,809
Retail — 2.4%
CEC Entertainment, Inc.(b)		90,000		2,336,400
Family Dollar Stores, Inc.(a)		162,200		3,119,106
Lowe's Companies, Inc.		183,763		4,156,719
��				9,612,225
Savings & Loans — 0.7%
Washington Federal, Inc.		129,100		2,725,301
Semiconductors — 2.6%
Applied Materials, Inc.		66,800		1,186,368
Emulex Corp.(b)		118,000		1,925,760
KLA-Tencor Corp.		31,100		1,497,776
QLogic Corp.(b)		219,939		3,123,134
Teradyne, Inc.(b)		259,800		2,686,332
				10,419,370

	Number of Shares		Market Value
Software — 0.3%
IMS Health, Inc.		48,600	$	1,119,744
Telecommunications — 0.3%
Iowa Telecommunications Services, Inc.(a)		72,836		1,184,313
Toys, Games & Hobbies — 1.5%
RC2 Corp.(b)		213,100		5,981,717
Transportation — 0.6%
Heartland Express, Inc.(a)		165,723		2,349,952
TOTAL EQUITIES (Cost $393,714,532)				374,163,725
MUTUAL FUND — 3.2%
Investment Companies
iShares S&P MidCap 400 Index Fund(a)		151,712		12,883,383
TOTAL MUTUAL FUND (Cost $13,347,491)				12,883,383
TOTAL LONG TERM INVESTMENTS (Cost $407,062,023)				387,047,108
	Principal Amount
SHORT-TERM INVESTMENTS — 13.6%
Cash Equivalents — 11.2%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	1,079,369		1,079,369
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		1,079,369		1,079,369
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		647,621		647,621
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		863,496		863,496
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		863,495		863,495
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		539,684		539,684
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		539,684		539,684

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008	$	1,511,116	$	1,511,116
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		863,495		863,495
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		647,621		647,621
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		539,684		539,684
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		647,621		647,621
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		647,621		647,621
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		647,621		647,621
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		647,621		647,621
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		863,495		863,495
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		1,079,368		1,079,368
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		4,587,315		4,587,315
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		863,495		863,495
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		647,621		647,621
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		539,684		539,684
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		971,431		971,431
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		323,810		323,810
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		1,079,368		1,079,368
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		1,079,368		1,079,368

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Value Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008	$	1,079,368	$	1,079,368
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		647,621		647,621
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		647,621		647,621
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		755,558		755,558
Reserve Primary Money Market Fund(c)		2,565,120		2,565,120
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		1,079,368		1,079,368
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		539,684		539,684
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		539,684		539,684
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		863,495		863,495
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		755,558		755,558
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		755,558		755,558
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		6,355,720		6,355,720
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		1,079,368		1,079,368
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		431,747		431,747
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		1,079,368		1,079,368
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		1,079,368		1,079,368
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		539,684		539,684
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		755,558		755,558
				45,349,521

	Principal Amount		Market Value
Repurchase Agreements — 2.4%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)	$	9,815,305	$	9,815,305
TOTAL SHORT-TERM INVESTMENTS (Cost $55,164,826)				55,164,826
TOTAL INVESTMENTS — 109.2% (Cost $462,226,849)(f)				442,211,934
Other Assets/ (Liabilities) — (9.2%)				(37,283,551	)
NET ASSETS — 100.0%			$	404,928,383

Notes to Portfolio of Investments

CAD - Canadian Dollar

EUR - Euro

(a) Denotes all or a portion of security on loan. (Note 2).

(b) Non-income producing security.

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $9,816,696. Collateralized by U.S. Government Agency obligations with rates ranging from 4.749% to 4.819%, maturity dates ranging from 9/01/2035 to 10/01/2035, and an aggregate market value, including accrued interest, of $10,015,032.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Growth Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 96.1%
COMMON STOCK — 96.1%
Advertising — 1.9%
Clear Channel Outdoor Holdings, Inc. Cl. A(a) (b)		70,900	$	1,961,094
Focus Media Holding Ltd. ADR (China)(a) (b)		3,300		187,473
Lamar Advertising Co. Cl. A(b)		60,600		2,913,042
Omnicom Group, Inc.		7,300		346,969
				5,408,578
Aerospace & Defense — 2.3%
Alliant Techsystems, Inc.(a) (b)		21,300		2,423,088
Empresa Brasileira de Aeronautica SA ADR (Brazil)		3,300		150,447
Rockwell Collins, Inc.		54,200		3,900,774
				6,474,309
Airlines — 0.7%
SkyWest, Inc.		3,800		102,030
Southwest Airlines Co.		159,800		1,949,560
				2,051,590
Auto Manufacturers — 0.6%
Oshkosh Truck Corp.		33,000		1,559,580
Automotive & Parts — 0.9%
WABCO Holdings, Inc.		51,400		2,574,626
Banks — 0.4%
City National Corp.		1,000		59,550
East West Bancorp, Inc.		2,400		58,152
First Horizon National Corp.(b)		2,400		43,560
Northern Trust Corp.		5,300		405,874
SVB Financial Group(a) (b)		10,800		544,320
Synovus Financial Corp.		2,600		62,608
UCBH Holdings, Inc.(b)		4,200		59,472
				1,233,536
Beverages — 0.2%
Brown-Forman Corp. Cl. B(b)		2,500		185,275
Cott Corp.(a)		60,000		399,600
				584,875

	Number of Shares		Market Value
Biotechnology — 3.0%
Affymetrix, Inc.(a) (b)		48,000	$	1,110,720
Celgene Corp.(a) (b)		2,500		115,525
Charles River Laboratories International, Inc.(a)		3,400		223,720
Genzyme Corp.(a)		2,900		215,876
Human Genome Sciences, Inc.(a) (b)		67,000		699,480
Illumina, Inc.(a) (b)		23,700		1,404,462
Integra LifeSciences Holdings Corp.(a) (b)		1,400		58,702
Invitrogen Corp.(a)		2,600		242,866
Martek Biosciences Corp.(a) (b)		2,500		73,950
Millipore Corp.(a)		13,000		951,340
Myriad Genetics, Inc.(a)		14,000		649,880
PDL BioPharma, Inc.(a)		25,000		438,000
QIAGEN NV(a) (b)		73,100		1,538,755
Vertex Pharmaceuticals, Inc.(a)		37,500		871,125
				8,594,401
Building Materials — 0.3%
Trane, Inc.		21,000		980,910
Chemicals — 0.1%
Ecolab, Inc.		4,400		225,324
Sigma-Aldrich Corp.		1,600		87,360
				312,684
Coal — 2.1%
Arch Coal, Inc.		4,100		184,213
CONSOL Energy, Inc.		60,200		4,305,504
Foundation Coal Holdings, Inc.		5,500		288,750
Peabody Energy Corp.		21,000		1,294,440
				6,072,907
Commercial Services — 6.3%
Apollo Group, Inc. Cl. A(a)		3,800		266,570
Block (H&R), Inc.		2,600		48,282
The Corporate Executive Board Co.(b)		9,700		582,970
DeVry, Inc.		3,900		202,644
Equifax, Inc.		2,400		87,264
Fastenal Co.(b)		35,000		1,414,700
Iron Mountain, Inc.(a)		66,950		2,478,489
ITT Educational Services, Inc.(a)		1,400		119,378
Manpower, Inc.		31,600		1,798,040
McKesson Corp.		2,100		137,571
Monster Worldwide, Inc.(a)		56,200		1,820,880

	Number of Shares		Market Value
Moody's Corp.(b)		7,500	$	267,750
Quanta Services, Inc.(a) (b)		71,600		1,878,784
Ritchie Bros. Auctioneers, Inc.		3,400		281,180
Robert Half International, Inc.		46,300		1,251,952
SAIC, Inc.(a)		122,000		2,454,640
VistaPrint Ltd.(a)		2,500		107,125
Western Union		118,200		2,869,896
				18,068,115
Computers — 3.3%
Cadence Design Systems, Inc.(a)		3,600		61,236
Cognizant Technology Solutions Corp. Cl. A(a) (b)		7,800		264,732
DST Systems, Inc.(a)		42,100		3,475,355
FactSet Research Systems, Inc.		3,200		178,240
IHS, Inc. Cl. A(a)		17,000		1,029,520
Jack Henry & Associates, Inc.		45,300		1,102,602
Logitech International SA(a)		3,400		124,576
Network Appliance, Inc.(a) (b)		12,400		309,504
Perot Systems Corp. Cl. A(a)		6,300		85,050
Seagate Technology		105,300		2,685,150
Synopsys, Inc.(a)		3,400		88,162
				9,404,127
Cosmetics & Personal Care — 0.1%
Avon Products, Inc.		7,600		300,428
Distribution & Wholesale — 0.2%
LKQ Corp.(a)		22,000		462,440
W.W. Grainger, Inc.		2,200		192,544
				654,984
Diversified Financial — 2.4%
Affiliated Managers Group, Inc.(a) (b)		11,500		1,350,790
The Bear Stearns Cos., Inc.(b)		1,200		105,900
BlackRock, Inc.(b)		1,100		238,480
Eaton Vance Corp.		55,600		2,524,796
Federated Investors, Inc. Cl. B		4,100		168,756

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Growth Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Interactive Brokers Group, Inc.(a)		36,100	$	1,166,752
IntercontinentalExchange, Inc.(a)		1,900		365,750
Janus Capital Group, Inc.		4,700		154,395
Lazard Ltd. Cl. A(b)		5,600		227,808
Legg Mason, Inc.		1,200		87,780
Nymex Holdings, Inc.(b)		3,200		427,552
optionsXpress Holdings, Inc.(b)		2,600		87,932
				6,906,691
Electric — 0.2%
AES Corp.(a)		10,800		231,012
Reliant Energy, Inc.(a)		11,500		301,760
				532,772
Electrical Components & Equipment — 1.4%
Ametek, Inc.(b)		81,300		3,808,092
General Cable Corp.(a)		1,700		124,576
				3,932,668
Electronics — 3.4%
Applera Corp. - Applied Biosystems Group		56,700		1,923,264
Cogent, Inc.(a) (b)		19,400		216,310
Cymer, Inc.(a)		1,400		54,502
Dolby Laboratories, Inc. Cl. A(a)		43,100		2,142,932
FLIR Systems, Inc.(a)		100,400		3,142,520
Gentex Corp.		3,900		69,303
II-VI, Inc.(a)		2,700		82,485
Jabil Circuit, Inc.		103,900		1,586,553
National Instruments Corp.		3,400		113,322
Waters Corp.(a)		3,500		276,745
				9,607,936
Energy – Alternate Sources — 1.0%
First Solar, Inc.(a)		5,000		1,335,700
SunPower Corp. Cl. A(a) (b)		12,000		1,564,680
				2,900,380
Engineering & Construction — 0.4%
Fluor Corp.		2,600		378,872
Foster Wheeler Ltd.(a)		2,900		449,558
McDermott International, Inc.(a)		6,800		401,404
				1,229,834
Entertainment — 1.7%
DreamWorks Animation SKG, Inc. Cl. A(a)		32,800		837,712
International Game Technology		75,500		3,316,715

	Number of Shares		Market Value
Pinnacle Entertainment, Inc.(a)		26,000	$	612,560
				4,766,987
Environmental Controls — 0.2%
Republic Services, Inc.		9,150		286,852
Stericycle, Inc.(a)		4,100		243,540
				530,392
Foods — 0.8%
The Hershey Co.(b)		4,000		157,600
McCormick & Co., Inc.		4,800		181,968
Whole Foods Market, Inc.(b)		44,000		1,795,200
Wrigley (Wm.) Jr. Co.		4,100		240,055
				2,374,823
Health Care – Products — 3.4%
American Medical Systems Holdings, Inc.(a) (b)		3,800		54,948
ArthoCare Corp.(a) (b)		2,300		110,515
Bard (C.R.), Inc.(b)		19,600		1,858,080
Becton, Dickinson & Co.		1,300		108,654
Dentsply International, Inc.		2,500		112,550
Edwards Lifesciences Corp.(a) (b)		50,000		2,299,500
Gen-Probe, Inc.(a)		19,800		1,246,014
Henry Schein, Inc.(a) (b)		26,300		1,614,820
Hologic, Inc.(a) (b)		2,400		164,736
Intuitive Surgical, Inc.(a)		800		259,600
Masimo Corp.(a)		2,500		98,625
Patterson Cos., Inc.(a)		1,800		61,110
Resmed, Inc.(a) (b)		17,200		903,516
St. Jude Medical, Inc.(a)		7,700		312,928
Techne Corp.(a)		2,600		171,730
Varian Medical Systems, Inc.(a)		2,600		135,616
Zimmer Holdings, Inc.(a)		2,700		178,605
				9,691,547
Health Care – Services — 2.0%
Community Health Systems, Inc.(a)		41,000		1,511,260
Coventry Health Care, Inc.(a)		16,500		977,625
DaVita, Inc.(a)		9,100		512,785
Health Net, Inc.(a)		26,900		1,299,270
Healthways, Inc.(a) (b)		2,400		140,256
Humana, Inc.(a)		3,800		286,178
Laboratory Corp. of America Holdings(a)		9,400		709,982
Lincare Holdings, Inc.(a)		3,600		126,576
Quest Diagnostics, Inc.		2,600		137,540
				5,701,472

	Number of Shares		Market Value
Home Builders — 0.1%
Centex Corp.(b)		2,000	$	50,520
KB Home(b)		1,800		38,880
Lennar Corp. Cl. A		3,200		57,248
Pulte Homes, Inc.(b)		2,400		25,296
Thor Industries, Inc.(b)		2,200		83,622
Toll Brothers, Inc.(a) (b)		2,300		46,138
Winnebago Industries, Inc.(b)		2,500		52,550
				354,254
Home Furnishing — 1.0%
Harman International Industries, Inc.		37,000		2,727,270
Household Products — 0.1%
Avery Dennison Corp.(b)		1,700		90,338
The Clorox Co.		2,900		188,993
				279,331
Insurance — 2.4%
Ambac Financial Group, Inc.(b)		3,300		85,041
Aon Corp.		2,800		133,532
Arch Capital Group Ltd.(a)		1,900		133,665
Assurant, Inc.		35,800		2,395,020
Axis Capital Holdings Ltd.		49,900		1,944,603
Brown & Brown, Inc.		3,100		72,850
Cigna Corp.		6,400		343,872
Markel Corp.(a)		200		98,220
MBIA, Inc.(b)		2,000		37,260
Philadelphia Consolidated Holding Corp.(a)		3,400		133,790
Principal Financial Group, Inc.		18,000		1,239,120
RenaissanceRe Holdings Ltd.		1,500		90,360
Willis Group Holdings Ltd.		2,100		79,737
				6,787,070
Internet — 5.0%
Amazon.com, Inc.(a)		45,000		4,168,800
Baidu.com ADR (China)(a)		300		117,117
CNET Networks, Inc.(a) (b)		123,000		1,124,220
Digital River, Inc.(a)		22,600		747,382
Expedia, Inc.(a)		63,900		2,020,518
F5 Networks, Inc.(a)		3,900		111,228
McAfee, Inc.(a)		45,500		1,706,250
Sina Corp.(a)		2,800		124,068
Symantec Corp.(a)		5,900		95,226
VeriSign, Inc.(a)		109,800		4,129,578
				14,344,387
Iron & Steel — 0.1%
Carpenter Technology Corp.		4,800		360,816

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Growth Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Leisure Time — 0.2%
Harley-Davidson, Inc.		5,100	$	238,221
Royal Caribbean Cruises Ltd.(b)		2,100		89,124
WMS Industries, Inc.(a) (b)		3,600		131,904
				459,249
Lodging — 1.4%
Boyd Gaming Corp.		1,600		54,512
Choice Hotels International, Inc.		3,800		126,160
Gaylord Entertainment Co.(a)		31,000		1,254,570
Marriott International, Inc. Cl. A		59,600		2,037,128
Melco PBL Entertainment Ltd. ADR (Hong Kong)(a) (b)		22,600		261,256
Starwood Hotels & Resorts Worldwide, Inc.		3,900		171,717
Wynn Resorts Ltd.(b)		1,600		179,408
				4,084,751
Machinery – Construction & Mining — 0.1%
Joy Global, Inc.		3,700		243,534
Terex Corp.(a)		1,400		91,798
				335,332
Machinery – Diversified — 0.8%
Graco, Inc.		4,000		149,040
IDEX Corp.		58,350		2,108,186
Zebra Technologies Corp. Cl. A(a)		1,900		65,930
				2,323,156
Manufacturing — 2.9%
Danaher Corp.		13,000		1,140,620
Donaldson Co., Inc.		5,200		241,176
ITT Corp.		33,400		2,205,736
Pall Corp.		2,400		96,768
Roper Industries, Inc.(b)		73,800		4,615,452
				8,299,752
Media — 2.5%
Cablevision Systems Corp. Cl. A(a)		56,100		1,374,450
Central European Media Enterprises Ltd.(a)		900		104,382
CTC Media, Inc.(a)		5,700		172,140
Discovery Holding Co. Cl. A(a)		78,000		1,960,920
The McGraw-Hill Cos., Inc.(b)		6,600		289,146
Meredith Corp.		1,100		60,478

	Number of Shares		Market Value
Rogers Communications, Inc. Cl. B(b)		38,000	$	1,719,500
Shaw Communications, Inc. Cl. B(b)		5,200		123,136
WPP Group PLC Sponsored ADR (United Kingdom)(b)		3,100		199,299
XM Satellite Radio Holdings, Inc. Cl. A(a)		82,000		1,003,680
				7,007,131
Metal Fabricate & Hardware — 0.1%
Precision Castparts Corp.		2,700		374,490
Mining — 1.0%
Agnico-Eagle Mines Ltd.(b)		34,200		1,868,346
Teck Cominco Ltd. Cl. B		30,000		1,071,300
				2,939,646
Office Furnishings — 0.0%
HNI Corp.(b)		2,100		73,626
Oil & Gas — 4.0%
Bill Barrett Corp.(a) (b)		2,700		113,049
Cabot Oil & Gas Corp.		2,400		96,888
CNX Gas Corp.(a) (b)		44,000		1,405,800
Compton Petroleum Corp.(a)		5,300		48,760
Compton Petroleum Corp.(a)		4,800		44,160
Diamond Offshore Drilling, Inc.(b)		1,800		255,600
EOG Resources, Inc.		41,000		3,659,250
Mariner Energy, Inc.(a)		4,200		96,096
Murphy Oil Corp.		31,800		2,697,912
Nabors Industries Ltd.(a)		3,900		106,821
SandRidge Energy, Inc.(a) (b)		10,300		369,358
Ultra Petroleum Corp.(a)		4,200		300,300
XTO Energy, Inc.		40,625		2,086,500
				11,280,494
Oil & Gas Services — 4.6%
BJ Services Co.		85,800		2,081,508
Cameron International Corp.(a)		35,400		1,703,802
Core Laboratories NV(a)		2,800		349,216
FMC Technologies, Inc.(a) (b)		47,200		2,676,240
Smith International, Inc.		66,800		4,933,180
TETRA Technologies, Inc.(a)		44,300		689,751
Trican Well Service Ltd. CAD		11,000		215,166
Weatherford International Ltd.(a)		6,100		418,460
				13,067,323

	Number of Shares		Market Value
Pharmaceuticals — 5.3%
Alkermes, Inc.(a) (b)		59,500	$	927,605
Allergan, Inc.		5,600		359,744
Amylin Pharmaceuticals, Inc.(a) (b)		22,200		821,400
Barr Pharmaceuticals, Inc.(a)		34,000		1,805,400
Cephalon, Inc.(a) (b)		38,700		2,777,112
Elan Corp. PLC Sponsored ADR (Ireland)(a) (b)		109,700		2,411,206
Express Scripts, Inc.(a)		5,200		379,600
Gilead Sciences, Inc.(a)		10,000		460,100
Medarex, Inc.(a) (b)		45,600		475,152
Medicis Pharmaceutical Corp. Cl. A(b)		38,000		986,860
OSI Pharmaceuticals, Inc.(a) (b)		16,000		776,160
Sepracor, Inc.(a)		25,400		666,750
Theravance, Inc.(a)		26,000		507,000
Valeant Pharmaceuticals International(a)		57,000		682,290
Warner Chilcott Ltd. Cl. A(a) (b)		54,500		966,285
				15,002,664
Pipelines — 0.1%
The Williams Cos., Inc.		10,300		368,534
Retail — 7.0%
Advance Auto Parts, Inc.		2,200		83,578
AnnTaylor Stores Corp.(a)		2,400		61,344
Bed Bath & Beyond, Inc.(a) (b)		60,700		1,783,973
Best Buy Co., Inc.		27,000		1,421,550
Carmax, Inc.(a) (b)		84,000		1,659,000
The Cheesecake Factory(a) (b)		33,000		782,430
Chipotle Mexican Grill, Inc. Cl. B(a)		21,000		2,584,050
Coach, Inc.(a)		9,300		284,394
Dick's Sporting Goods, Inc.(a)		3,000		83,280
Family Dollar Stores, Inc.(b)		3,700		71,151
J. Crew Group, Inc.(a) (b)		27,000		1,301,670
Men's Wearhouse, Inc.		2,100		56,658
MSC Industrial Direct Co. Cl. A		6,000		242,820
O'Reilly Automotive, Inc.(a)		56,600		1,835,538
P.F. Chang's China Bistro, Inc.(a) (b)		18,000		411,120
Panera Bread Co. Cl. A(a) (b)		8,000		286,560
Petsmart, Inc.		75,900		1,785,927
Ross Stores, Inc.		6,800		173,876
Shoppers Drug Mart Corp. CAD		24,000		1,300,214

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Growth Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Staples, Inc.		6,200	$	143,034
Tiffany & Co.		5,200		239,356
Tim Hortons, Inc.(b)		35,900		1,325,787
The TJX Cos., Inc.(b)		9,400		270,062
Tractor Supply Co.(a) (b)		1,600		57,504
Under Armour, Inc. Cl. A(a) (b)		10,000		436,700
Urban Outfitters, Inc.(a) (b)		3,500		95,410
Williams-Sonoma, Inc.(b)		31,600		818,440
Yum! Brands, Inc.		10,200		390,354
				19,985,780
Semiconductors — 5.3%
Altera Corp.		110,000		2,125,200
Analog Devices, Inc.		8,500		269,450
Broadcom Corp. Cl. A(a)		9,400		245,716
Fairchild Semiconductor International, Inc.(a)		4,200		60,606
Integrated Device Technology, Inc.(a)		6,100		68,991
Intersil Corp. Cl. A		78,800		1,929,024
KLA-Tencor Corp.		1,600		77,056
Lam Research Corp.(a)		1,900		82,137
Linear Technology Corp.(b)		9,200		292,836
Marvell Technology Group Ltd.(a)		119,200		1,666,416
Maxim Integrated Products, Inc.		9,400		248,912
MEMC Electronic Materials, Inc.(a)		4,300		380,507
Microchip Technology, Inc.(b)		61,300		1,926,046
National Semiconductor Corp.		8,900		201,496
ON Semiconductor Corp.(a) (b)		144,000		1,278,720
PMC-Sierra, Inc.(a)		135,000		882,900
QLogic Corp.(a)		8,200		116,440
Silicon Laboratories, Inc.(a)		3,200		119,776
Teradyne, Inc.(a)		96,800		1,000,912
Xilinx, Inc.		94,700		2,071,089
				15,044,230
Software — 5.1%
Activision, Inc.(a)		9,400		279,180
American Reprographics Co.(a) (b)		7,500		123,600
Autodesk, Inc.(a)		23,600		1,174,336
Avid Technology, Inc.(a) (b)		30,000		850,200
Cerner Corp.(a) (b)		23,000		1,297,200
Citrix Systems, Inc.(a)		3,800		144,438
Dun & Bradstreet Corp.		1,200		106,356
Electronic Arts, Inc.(a) (b)		5,500		321,255
Fidelity National Information Services, Inc.		1,500		62,385

	Number of Shares		Market Value
Fiserv, Inc.(a)		43,300	$	2,402,717
Global Payments, Inc.		51,400		2,391,128
Intuit, Inc.(a)		34,100		1,077,901
NAVTEQ Corp.(a)		3,000		226,800
Paychex, Inc.		8,700		315,114
Red Hat, Inc.(a) (b)		118,400		2,467,456
Salesforce.com, Inc.(a)		13,100		821,239
Satyam Computer Services Ltd. ADR (India)		6,300		168,336
SEI Investments Co.		3,600		115,812
THQ, Inc.(a)		5,300		149,407
				14,494,860
Telecommunications — 7.0%
ADTRAN, Inc.(b)		20,000		427,600
Amdocs Ltd.(a)		68,000		2,343,960
American Tower Corp. Cl. A(a)		63,200		2,692,320
Ciena Corp.(a) (b)		26,000		886,860
Crown Castle International Corp.(a)		70,800		2,945,280
Foundry Networks, Inc.(a)		7,100		124,392
Harris Corp.		21,000		1,316,280
JDS Uniphase Corp.(a)		81,900		1,089,270
Juniper Networks, Inc.(a)		117,100		3,887,720
Leap Wireless International, Inc.(a)		41,400		1,930,896
MetroPCS Communications, Inc.(a) (b)		60,100		1,168,945
NeuStar, Inc. Cl. A(a) (b)		3,800		108,984
NII Holdings, Inc. Cl. B(a)		3,300		159,456
SBA Communications Corp. Cl. A(a)		28,700		971,208
				20,053,171
Textiles — 0.0%
Cintas Corp.		3,000		100,860
Toys, Games & Hobbies — 0.1%
Mattel, Inc.		6,100		116,144
Transportation — 0.6%
C.H. Robinson Worldwide, Inc.		4,400		238,128
Expeditors International of Washington, Inc.		5,200		232,336
Landstar System, Inc.		5,000		210,750
UTI Worldwide, Inc.		47,900		938,840
				1,620,054
TOTAL COMMON STOCK (Cost $246,998,923)				274,335,527

	Number of Shares		Market Value
PREFERRED STOCK — 0.0%
Banking, Savings & Loans
Bill Me Later, Inc. Preferred (Aquired 8/16/2007, Cost $108,690)(a) (c) (h)		3,000	$	108,690
TOTAL PREFERRED STOCK (Cost $108,690)				108,690
TOTAL EQUITIES (Cost $247,107,613)				274,444,217
	Principal Amount
SHORT-TERM INVESTMENTS — 24.9%
Cash Equivalents — 20.9%(e)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	1,424,735		1,424,735
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		1,424,735		1,424,735
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		854,841		854,841
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		1,139,792		1,139,792
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		1,139,788		1,139,788
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		712,367		712,367
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		712,367		712,367
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		1,994,629		1,994,629
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		1,139,788		1,139,788
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		854,841		854,841
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		712,367		712,367
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		854,841		854,841

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Mid Cap Growth Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Barclays Eurodollar Time Deposit 5.150% 02/12/2008	$	854,841	$	854,841
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		854,841		854,841
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		854,841		854,841
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		1,139,788		1,139,788
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		1,424,735		1,424,735
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		6,055,124		6,055,124
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		1,139,788		1,139,788
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		854,841		854,841
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		712,367		712,367
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		1,282,261		1,282,261
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		427,420		427,420
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		1,424,735		1,424,735
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		1,424,735		1,424,735
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		1,424,735		1,424,735
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		854,841		854,841
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		854,841		854,841
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		997,315		997,315
Reserve Primary Money Market Fund(d)		3,385,884		3,385,884

	Principal Amount		Market Value
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008	$	1,424,735	$	1,424,735
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		712,367		712,367
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		712,367		712,367
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		1,139,788		1,139,788
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		997,315		997,315
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		997,315		997,315
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		8,389,367		8,389,367
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		1,424,735		1,424,735
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		569,894		569,894
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		1,424,735		1,424,735
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		1,424,735		1,424,735
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		712,367		712,367
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		997,315		997,315
				59,860,059

	Principal Amount		Market Value
Repurchase Agreements — 4.0%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(f)	$	11,309,131	$	11,309,131
TOTAL SHORT-TERM INVESTMENTS (Cost $71,169,190)				71,169,190
TOTAL INVESTMENTS — 121.0% (Cost $318,276,803)(g)				345,613,407
Other Assets/ (Liabilities) — (21.0%)				(59,912,060	)
NET ASSETS — 100.0%			$	285,701,347	��

Notes to Portfolio of Investments

ADR - American Depository Receipt

CAD - Canadian Dollar

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Principal amount represents shares owned of the fund.

(e) Represents investments of security lending collateral. (Note 2).

(f) Maturity value of $11,310,733. Collateralized by a U.S. Government Agency obligation with a rate of 4.224%, maturity date of 3/1/2035, and an aggregate market value, including accrued interest, of $11,536,279.

(g) See Note 6 for aggregate cost for Federal tax purposes.

(h) Restricted security. (Note 2).

The accompanying notes are an integral part of the financial statements.

MML Small Cap Value Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 92.8%
COMMON STOCK — 92.8%
Advertising — 0.0%
Greenfield Online, Inc.(a)		4,100	$	59,901
ValueVision Media, Inc. Cl. A(a)		5,930		37,300
				97,201
Aerospace & Defense — 0.1%
Aerovironment, Inc.(a) (b)		1,925		46,585
Kaman Corp.		8,030		295,584
				342,169
Agriculture — 1.1%
Alliance One International, Inc.(a) (b)		77,880		316,972
Universal Corp.(b)		46,704		2,392,179
				2,709,151
Airlines — 0.6%
Alaska Air Group, Inc.(a) (b)		22,600		565,226
Continental Airlines, Inc. Cl. B(a)		16,200		360,450
Pinnacle Airlines Corp.(a) (b)		11,013		167,948
SkyWest, Inc.		16,700		448,395
				1,542,019
Apparel — 0.7%
Deckers Outdoor Corp.(a)		4,717		731,418
Kellwood Co.(b)		25,147		418,446
Perry Ellis International, Inc.(a)		31,309		481,532
The Warnaco Group, Inc.(a)		3,312		115,258
				1,746,654
Auto Manufacturers — 0.0%
Wabash National Corp.		9,209		70,817
Automotive & Parts — 1.6%
Accuride Corp.(a)		24,105		189,465
American Axle & Manufacturing Holdings, Inc.		29,700		553,014
ArvinMeritor, Inc.		64,045		751,248
Autoliv, Inc.		5,600		295,176
Cooper Tire & Rubber Co.		66,771		1,107,063
Exide Technologies(a)		10,628		85,024
Standard Motor Products, Inc.		17,097		139,512
TRW Automotive Holdings Corp.(a)		39,300		821,370
				3,941,872

	Number of Shares		Market Value
Banks — 8.8%
Alabama National Bancorp		2,886	$	224,560
Banco Latinoamericano de Exportaciones SA Cl. E		80,996		1,321,045
Bank Mutual Corp.		93,512		988,422
Cascade Bancorp(b)		17,480		243,322
Central Pacific Financial Corp.		66,934		1,235,602
Chemical Financial Corp.		4,832		114,953
City National Corp.		6,546		389,814
The Colonial BancGroup, Inc.		385		5,213
Community Bancorp/NV(a)		22,021		382,505
East West Bancorp, Inc.		38,952		943,807
First Bancorp(b)		41,510		302,608
First Charter Corp.		4,300		128,398
First Community Bancorp		80,328		3,312,727
First Indiana Corp.		3,543		113,376
First Merchants Corp.		1,001		21,862
First Regional Bancorp/Los Angeles, CA(a)		14,401		272,035
FirstMerit Corp.		9,627		192,636
Frontier Financial Corp.(b)		14,672		272,459
Green Bankshares, Inc.		4,867		93,446
Hanmi Financial Corp.		107,909		930,176
International Bancshares Corp.		23,643		495,084
Pinnacle Financial Partners, Inc.(a)		600		15,252
Preferred Bank/Los Angeles, CA		42,414		1,103,612
Renasant Corp.		4,900		105,693
The South Financial Group, Inc.(b)		125,825		1,966,645
Sterling Financial Corp.		1,600		26,864
Susquehanna Bancshares, Inc.		26,827		494,690
SVB Financial Group(a) (b)		23,720		1,195,488
Texas Capital Bancshares, Inc.(a)		24,671		450,246
TriCo Bancshares		734		14,166
Trustmark Corp.(b)		34,148		865,993
UCBH Holdings, Inc.		3,000		42,480
Umpqua Holdings Corp.(b)		127,639		1,957,982
Webster Financial Corp.		19,700		629,809
Whitney Holding Corp.		20,100		525,615
Wintrust Financial Corp.		17,713		586,832
				21,965,417
Beverages — 0.4%
Boston Beer Co., Inc. Cl. A(a)		3,928		147,889
Molson Coors Brewing Co. Cl. B		17,850		921,417
PepsiAmericas, Inc.		77		2,566
				1,071,872

	Number of Shares		Market Value
Biotechnology — 0.8%
Arqule, Inc.(a)		10,166	$	58,963
Bio-Rad Laboratories, Inc. Cl. A(a)		3,000		310,860
Martek Biosciences Corp.(a) (b)		3,543		104,802
Millennium Pharmaceuticals, Inc.(a)		62,833		941,238
Molecular Insight Pharmaceuticals, Inc.(a)		6,700		60,702
Regeneration Technologies, Inc.(a)		11,068		96,070
XOMA Ltd.(a)		118,400		401,376
				1,974,011
Building Materials — 0.0%
Goodman Global, Inc.(a)		326		8,000
NCI Building Systems, Inc.(a) (b)		1,833		52,772
				60,772
Chemicals — 5.0%
Arch Chemicals, Inc.		4,897		179,965
Ashland, Inc.		18,100		858,483
Celanese Corp. Cl. A		24,700		1,045,304
CF Industries Holdings, Inc.		35,597		3,917,806
Cytec Industries, Inc.		15,500		954,490
H.B. Fuller Co.		8,600		193,070
Innospec, Inc.		32,616		559,691
The Lubrizol Corp.		9,700		525,352
Methanex Corp.(b)		13,400		369,840
Minerals Technologies, Inc.		7,820		523,549
OM Group, Inc.(a)		6,567		377,865
Penford Corp.		1,386		35,468
Rockwood Holdings, Inc.(a)		51,119		1,698,173
Schulman (A.), Inc.		15,506		334,154
Spartech Corp.		2,200		31,020
Stepan Co.		1,515		49,283
Terra Industries, Inc.(a)		14,170		676,759
Tronox, Inc. Cl. B		231		1,998
				12,332,270
Commercial Services — 4.6%
ABM Industries, Inc.		43,062		878,034
Albany Molecular Research, Inc.(a)		13,400		192,692
Arbitron, Inc.		3,400		141,338
Avis Budget Group, Inc.(a)		37,300		484,900
Bowne & Co., Inc.		49,288		867,469
Capella Education Co.(a)		11,400		746,244
Career Education Corp.(a)		1,155		29,037
Corinthian Colleges, Inc.(a)		8,300		127,820

(Continued)

The accompanying notes are an integral part of the financial statements.

MML Small Cap Value Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
CPI Corp.		15,639	$	368,298
DynCorp International, Inc.(a)		49,756		1,337,441
Healthspring, Inc.(a)		27,910		531,685
Integrated Electrical Services, Inc.(a)		31,514		592,148
INVESTools, Inc.(a)		10,900		193,366
ITT Educational Services, Inc.(a)		13,862		1,182,013
Kelly Services, Inc. Cl. A		19,800		369,468
Maximus, Inc.		1,400		54,054
Morningstar, Inc.(a)		1,200		93,300
MPS Group, Inc.(a)		2,700		29,538
PharmaNet Development Group, Inc.(a)		9,858		386,532
PHH Corp.(a)		28,552		503,657
Premier Exhibitions, Inc.(a) (b)		16,096		176,090
Pre-Paid Legal Services, Inc.(a) (b)		13,939		771,524
Spherion Corp.(a)		156,092		1,136,350
TNS, Inc.(b)		19,869		352,675
				11,545,673
Computers — 2.2%
Agilysys, Inc.		27,938		422,423
Ansoft Corp.(a)		3,469		89,674
Ciber, Inc.(a)		105,686		645,741
Hutchinson Technology, Inc.(a)		17,559		462,153
Immersion Corp.(a) (b)		136,103		1,762,534
InterVoice, Inc.(a)		1,500		11,985
Magma Design Automation, Inc.(a)		22,701		277,179
Manhattan Associates, Inc.(a)		10,936		288,273
Palm, Inc.(b)		29,500		187,030
Quantum Corp.(a)		257,310		692,164
Sigma Designs, Inc.(a) (b)		10,400		574,080
Silicon Storage Technology, Inc.(a)		9,473		28,324
Synaptics, Inc.(a)		900		37,044
Synopsys, Inc.(a)		3,774		97,860
				5,576,464
Consumer Services — 0.0%
Core-Mark Holding Co., Inc.(a)		3,697		106,178
Cosmetics & Personal Care — 0.2%
Elizabeth Arden, Inc.(a)		18,809		382,763
Distribution & Wholesale — 0.3%
Ingram Micro, Inc. Cl. A(a)		770		13,891
Tech Data Corp.(a)		16,327		615,854
				629,745

	Number of Shares		Market Value
Diversified Financial — 0.7%
Calamos Asset Management, Inc. Cl. A		4,300	$	128,054
GAMCO Investors, Inc. Cl. A		6,084		421,317
Greenhill & Co., Inc.(b)		13,900		924,072
Janus Capital Group, Inc.		600		19,710
Ocwen Financial Corp.(a) (b)		7,008		38,824
optionsXpress Holdings, Inc.		5,100		172,482
Portfolio Recovery Associates, Inc.		500		19,835
				1,724,294
Electric — 2.9%
Alliant Energy Corp.		308		12,533
Aquila, Inc.(a)		8,800		32,824
Black Hills Corp.		7,100		313,110
Central Vermont Public Service Corp.(b)		3,100		95,604
Northeast Utilities		29,900		936,169
NorthWestern Corp.		12,322		363,499
Otter Tail Corp.		2,387		82,590
Pepco Holdings, Inc.		1,001		29,359
PNM Resources, Inc.		2,600		55,770
Portland General Electric Co.		67,998		1,888,984
Reliant Energy, Inc.(a)		36,000		944,640
Unisource Energy Corp.		1,400		44,170
Westar Energy, Inc.		90,817		2,355,793
				7,155,045
Electrical Components & Equipment — 1.5%
Belden, Inc.		182		8,099
C&D Technologies, Inc.(a) (b)		23,966		158,415
Encore Wire Corp.(b)		25,428		404,814
EnerSys(a)		34,500		861,120
Graftech International Ltd.(a)		74,431		1,321,150
Superior Essex, Inc.(a)		44,729		1,073,496
				3,827,094
Electronics — 2.7%
Analogic Corp.		8,317		563,227
Arrow Electronics, Inc.(a)		16,800		659,904
Badger Meter, Inc.(b)		4,387		197,196
Checkpoint Systems, Inc.(a)		21,600		561,168
Cubic Corp.		31,113		1,219,630
Methode Electronics, Inc.		23,027		378,564
PerkinElmer, Inc.		33,800		879,476
Stoneridge, Inc.(a)		10,782		86,687
Varian, Inc.(a)		18,338		1,197,471
Vishay Intertechnology, Inc.(a)		77,900		888,839
				6,632,162
Energy – Alternate Sources — 0.0%
Headwaters, Inc.(a)		1,500		17,610

	Number of Shares		Market Value
Engineering & Construction — 0.7%
Dycom Industries, Inc.(a)		3,389	$	90,317
Emcor Group, Inc.(a)		22,275		526,358
Perini Corp.(a)		27,587		1,142,654
				1,759,329
Entertainment — 0.1%
Macrovision Corp.(a)		7,700		141,141
Environmental Controls — 0.1%
Calgon Carbon Corp.(a) (b)		9,473		150,526
Foods — 4.4%
Cal-Maine Foods, Inc.(b)		26,721		708,908
Chiquita Brands International, Inc.(a) (b)		73,246		1,346,994
Del Monte Foods Co.		39,300		371,778
Flowers Foods, Inc.		1,109		25,962
Fresh Del Monte Produce, Inc.(a)		70,332		2,361,749
Ingles Markets, Inc. Cl. A		5,876		149,192
Nash Finch Co.		13,392		472,470
Performance Food Group Co.(a)		99,884		2,683,883
Ruddick Corp.(b)		30,600		1,060,902
Seaboard Corp.		40		58,800
Smithfield Foods, Inc.(a)		12,000		347,040
SuperValu, Inc.		20,600		772,912
Tyson Foods, Inc. Cl. A		24,000		367,920
Winn-Dixie Stores Inc.-W/I(a)		12,800		215,936
				10,944,446
Forest Products & Paper — 1.3%
Buckeye Technologies, Inc.(a)		31,030		387,875
Potlatch Corp.		15,521		689,753
Schweitzer-Mauduit International, Inc.		500		12,955
United Stationers, Inc.(a)		44,899		2,074,783
				3,165,366
Gas — 1.2%
Atmos Energy Corp.		24,300		681,372
New Jersey Resources Corp.		1,000		50,020
Northwest Natural Gas Co.		25,020		1,217,473
South Jersey Industries, Inc.		1,200		43,308
WGL Holdings, Inc.		30,112		986,469
				2,978,642
Hand & Machine Tools — 0.8%
Hardinge, Inc.		21,891		367,331
Kennametal, Inc.		20,200		764,772
Regal-Beloit Corp.		20,300		912,485
				2,044,588

(Continued)

The accompanying notes are an integral part of the financial statements.

100

MML Small Cap Value Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Health Care – Products — 0.9%
ArthoCare Corp.(a)		800	$	38,440
CONMED Corp.(a)		27,015		624,317
Gen-Probe, Inc.(a)		1,848		116,295
Invacare Corp.		42,666		1,075,183
Kinetic Concepts, Inc.(a)		3,389		181,515
Merit Medical Systems, Inc.(a)		1,000		13,900
Osteotech, Inc.(a)		7,000		54,740
SurModics, Inc.(a)		300		16,281
Zoll Medical Corp.(a)		2,150		57,448
				2,178,119
Health Care – Services — 2.2%
Air Methods Corp.(a)		1,300		64,571
Apria Healthcare Group, Inc.(a)		56,668		1,222,329
Kindred Healthcare, Inc.(a)		82,874		2,070,193
LifePoint Hospitals, Inc.(a) (b)		18,600		553,164
Medcath Corp.(a)		6,296		154,630
Molina Healthcare, Inc.(a) (b)		24,500		948,150
RehabCare Group, Inc.(a)		23,236		524,204
				5,537,241
Home Builders — 0.2%
Coachmen Industries, Inc.		3,389		20,165
KB Home(b)		13,200		285,120
Monaco Coach Corp.		11,167		99,163
				404,448
Home Furnishing — 0.2%
Hooker Furniture Corp.		600		12,060
La-Z-Boy, Inc.(b)		154		1,221
Tempur-Pedic International, Inc.(b)		15,836		411,261
				424,542
Household Products — 0.5%
American Greetings Corp. Cl. A		57,014		1,157,384
Fossil, Inc.(a)		2,900		121,742
WD-40 Co.		400		15,188
				1,294,314
Insurance — 6.6%
American Physicians Capital, Inc.		19,792		820,576
Amtrust Financial Services, Inc.(b)		6,600		90,882
Arch Capital Group Ltd.(a)		14,100		991,935
Aspen Insurance Holdings Ltd.(b)		172,107		4,963,566
Assured Guaranty Ltd.		56,104		1,489,000
Castlepoint Holdings Ltd.		18,500		222,000

	Number of Shares		Market Value
Flagstone Reinsurance Holdings Ltd.		8,600	$	119,540
IPC Holdings Ltd.		8,477		244,731
Max Capital Group Ltd.		87,318		2,444,031
NYMAGIC, Inc.		11,706		270,760
Old Republic International Corp.		36,000		554,760
The Phoenix Companies, Inc.		308		3,656
Platinum Underwriters Holdings Ltd.		80,472		2,861,584
Reinsurance Group of America, Inc.		5,622		295,043
StanCorp Financial Group, Inc.		12,300		619,674
Stewart Information Services		500		13,045
Universal American Corp.(a)		12,630		323,202
				16,327,985
Internet — 2.8%
1-800-Flowers.com, Inc. Cl. A(a)		17,559		153,290
Asiainfo Holdings, Inc.(a)		76,909		845,999
Avocent Corp.(a)		8,397		195,734
Blue Coat Systems, Inc.(a)		6,200		203,794
Blue Nile, Inc.(a) (b)		12,404		844,216
Chordiant Software, Inc.(a)		59,608		509,648
CMGI, Inc.(a)		17,952		234,992
EarthLink, Inc.(a)		11,244		79,495
Global Sources Ltd.(a)		660		18,625
InfoSpace, Inc.		3,466		65,161
Interwoven, Inc.(a)		117,353		1,668,760
On2 Technologies, Inc.(a) (b)		65,769		67,084
Overstock.com, Inc.(a) (b)		3,543		55,023
RealNetworks, Inc.(a)		108,602		661,386
RightNow Technologies, Inc.(a)		6,800		107,780
S1 Corp.(a)		27,879		203,517
SonicWALL, Inc.(a)		24,114		258,502
United Online, Inc.		7,509		88,756
Vignette Corp.(a)		35,894		524,411
Vocus, Inc.(a)		2,200		75,966
				6,862,139
Investment Companies — 1.0%
Apollo Investment Corp.		130,151		2,219,075
Capital Southwest Corp.		2,926		346,438
				2,565,513
Iron & Steel — 0.7%
Cleveland-Cliffs, Inc.(b)		3,000		302,400
Olympic Steel, Inc.		800		25,368
Schnitzer Steel Industries, Inc. Cl. A		5,237		362,034
Steel Dynamics, Inc.		17,600		1,048,432
				1,738,234

	Number of Shares		Market Value
Leisure Time — 0.7%
Brunswick Corp.		19,000	$	323,950
Multimedia Games, Inc.(a) (b)		21,993		183,422
Polaris Industries, Inc.(b)		25,808		1,232,848
				1,740,220
Machinery – Construction & Mining — 0.3%
Terex Corp.(a)		11,800		773,726
Machinery – Diversified — 1.2%
AGCO Corp.(a) (b)		8,500		577,830
Applied Industrial Technologies, Inc.		8,317		241,359
Briggs & Stratton Corp.(b)		28,400		643,544
NACCO Industries, Inc. Cl. A		7,607		758,342
Robbins & Myers, Inc.(b)		1,615		122,142
Tecumseh Products Co. Cl. A(a)		30,916		723,744
				3,066,961
Manufacturing — 1.4%
A.O. Smith Corp.		12,630		442,681
AptarGroup, Inc.		14,000		572,740
Crane Co.		924		39,640
EnPro Industries, Inc.(a)		9,630		295,159
Koppers Holdings, Inc.		5,160		223,118
LSB Industries, Inc.(a) (b)		7,100		200,362
Park-Ohio Holdings Corp.(a)		2,926		73,443
Polypore International, Inc.(a)		9,500		166,250
SPX Corp.		6,400		658,240
Tredegar Corp.		36,699		590,120
Trimas Corp.(a)		9,473		100,319
				3,362,072
Media — 0.5%
Belo Corp. Cl. A		36,952		644,443
Cox Radio, Inc. Cl. A(a)		17,721		215,310
Entercom Communications Corp.		3,928		53,774
Journal Communications, Inc. Cl. A		11,398		101,898
Scholastic Corp.(a)		4,100		143,049
				1,158,474
Metal Fabricate & Hardware — 1.9%
Ampco-Pittsburgh Corp.		3,697		140,967
Commercial Metals Co.		23,200		680,920
Mueller Industries, Inc.		34,728		1,006,765
Quanex Corp.		28,597		1,484,184
Sun Hydraulics Corp.		4,082		102,989
Worthington Industries, Inc.(b)		72,225		1,291,383
				4,707,208

(Continued)

The accompanying notes are an integral part of the financial statements.

101

MML Small Cap Value Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Mining — 0.0%
Hecla Mining Co.(a)		3,200	$	29,920
Office Equipment/Supplies — 0.9%
Ikon Office Solutions, Inc.		173,956		2,264,907
Oil & Gas — 2.9%
Bill Barrett Corp.(a) (b)		4,159		174,137
Bois d'Arc Energy, Inc.(a)		8,300		164,755
Bronco Drilling Co., Inc.(a)		1,300		19,305
Cimarex Energy Co.		7,470		317,699
Comstock Resources, Inc.(a)		308		10,472
Delek US Holdings, Inc.		18,527		374,801
Grey Wolf, Inc.(a) (b)		86,870		463,017
Mariner Energy, Inc.(a)		5,269		120,555
Parker Drilling Co.(a)		847		6,395
Rosetta Resources, Inc.(a)		38,275		758,993
Rowan Companies, Inc.		7,100		280,166
Stone Energy Corp.(a)		54,443		2,553,921
Swift Energy Co.(a)		28,838		1,272,044
Western Refining, Inc.(b)		1,479		35,807
Whiting Petroleum Corp.(a)		10,936		630,570
				7,182,637
Oil & Gas Services — 1.1%
Dawson Geophysical Co.(a)		924		66,029
Exterran Holdings, Inc.(a)		7,000		572,600
Global Industries Ltd.(a)		20,620		441,680
Lufkin Industries, Inc.		500		28,645
Oil States International, Inc.(a) (b)		20,500		699,460
T-3 Energy Services, Inc.(a)		231		10,859
Trico Marine Services, Inc.(a)		5,220		193,244
Union Drilling, Inc.(a)		10,374		163,598
Willbros Group, Inc.(a) (b)		17,849		683,438
				2,859,553
Packaging & Containers — 0.3%
Owens-Illinois, Inc.(a)		431		21,335
Sonoco Products Co.		18,600		607,848
				629,183
Pharmaceuticals — 0.6%
Caraco Pharmaceutical Laboratories Ltd.(a)		2,669		45,773
Javelin Pharmaceuticals, Inc.(a)		5,776		21,602
Neurocrine Biosciences, Inc.(a)		12,900		58,566
Omnicare, Inc.		9,900		225,819
Synta Pharmaceuticals Corp.(a) (b)		7,200		48,240
Theragenics Corp.(a)		2,900		10,382
Watson Pharmaceutical, Inc.(a)		37,043		1,005,347
				1,415,729

	Number of Shares		Market Value
Pipelines — 0.1%
Oneok, Inc.		5,930	$	265,486
Real Estate — 0.0%
Jones Lang Lasalle, Inc.(b)		1,386		98,628
Real Estate Investment Trusts (REITS) — 7.0%
Agree Realty Corp. REIT		6,490		195,349
AMB Property Corp.		20,300		1,168,468
Anthracite Capital, Inc. REIT(b)		144,487		1,046,086
Arbor Realty Trust, Inc.(b)		13,092		210,912
Ashford Hospitality Trust		33,200		238,708
BioMed Realty Trust, Inc. REIT		2,500		57,925
Camden Property Trust REIT		5,089		245,035
DCT Industrial Trust, Inc. REIT		86,800		808,108
Digital Realty Trust, Inc. REIT(b)		25,100		963,087
Douglas Emmett, Inc. REIT		6,100		137,921
Entertainment Properties Trust REIT		40,803		1,917,741
Federal Realty Investment Trust REIT(b)		10,551		866,765
FelCor Lodging Trust, Inc.(b)		34,300		534,737
Gramercy Capital Corp.(b)		32,576		791,923
Inland Real Estate Corp.		1,300		18,408
Medical Properties Trust, Inc.		123,444		1,257,894
Mid-America Apartment Communities, Inc. REIT		10,800		461,700
Post Properties, Inc. REIT(b)		7,203		252,969
Realty Income Corp.(b)		12,000		324,240
Regency Centers Corp.		27,492		1,772,959
Strategic Hotels & Resorts, Inc. REIT		14,600		244,258
Tanger Factory Outlet Centers, Inc. REIT(b)		9,000		339,390
Taubman Centers, Inc. REIT(b)		27,920		1,373,385
Ventas, Inc.(b)		46,608		2,109,012
				17,336,980
Retail — 3.4%
Asbury Automotive Group, Inc.		47,063		708,298
AutoNation, Inc.(a)		39,078		611,961
Bell Microproducts, Inc.(a)		13,785		82,848
Bob Evans Farms, Inc.		17,529		472,056
CEC Entertainment, Inc.(a)		4,200		109,032
Chipotle Mexican Grill, Inc. Cl. B(a)		200		24,610
Dillards, Inc. Cl. A(b)		14,500		272,310
Insight Enterprises, Inc.(a)		4,900		89,376
Jack in the Box, Inc.(a)		52,749		1,359,342
Jo-Ann Stores, Inc.(a)		65,538		857,237

	Number of Shares		Market Value
Jones Apparel Group, Inc.		34,400	$	550,056
Landry's Restaurants, Inc.		3,200		63,040
Longs Drug Stores Corp.		800		37,600
O'Charley's, Inc.		53,209		797,071
PC Connection, Inc.(a)		9,164		104,011
RadioShack Corp.		2,771		46,719
Regis Corp.		7,300		204,108
Rush Enterprises, Inc. Cl. A(a)		64,176		1,166,720
School Specialty, Inc.(a)		4,467		154,335
Sonic Automotive, Inc.		30,035		581,478
Systemax, Inc.(b)		10,705		217,526
West Marine, Inc.(a)		5,160		46,337
				8,556,071
Savings & Loans — 2.7%
Astoria Financial Corp.		21,200		493,324
Bankfinancial Corp.		34,733		549,476
Brookline Bancorp, Inc.		25,568		259,771
First Niagara Financial Group, Inc.		30,349		365,402
Flagstar Bancorp, Inc.		8,883		61,915
KNBT Bancorp, Inc.		9,087		140,122
NewAlliance Bancshares, Inc.(b)		79,015		910,253
Provident Financial Services, Inc.(b)		257,295		3,710,194
Provident New York Bancorp		13,400		173,128
Roma Financial Corp.		3,900		61,191
				6,724,776
Semiconductors — 1.3%
Amkor Technology, Inc.(a)		39,700		338,641
Credence Systems Corp.(a)		75,241		182,083
DSP Group, Inc.(a)		17,088		208,474
Exar Corp.(a)		37,056		295,336
Lattice Semiconductor Corp.(a)		154		501
Novellus Systems, Inc.(a)		154		4,246
Pericom Semiconductor Corp.(a)		6,100		114,070
Skyworks Solutions, Inc.(a)		117,162		995,877
Teradyne, Inc.(a)		27,000		279,180
Zoran Corp.(a)		32,300		727,073
				3,145,481
Software — 1.5%
Actuate Corp.(a)		1,800		13,986
Advent Software, Inc.(a) (b)		5,702		308,478
Captaris, Inc.(a)		58,922		254,543
Concur Technologies, Inc.(a)		2,900		105,009
CSG Systems International, Inc.(a)		4,929		72,555

(Continued)

The accompanying notes are an integral part of the financial statements.

102

MML Small Cap Value Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Double-Take Software, Inc.(a)		2,400	$	52,128
Fair Isaac Corp.		4,414		141,910
JDA Software Group, Inc.(a)		14,977		306,429
MicroStrategy, Inc. Cl. A(a)		4,759		452,581
Omniture, Inc.(a) (b)		8,798		292,885
Pegasystems, Inc.		15,711		187,432
Phase Forward, Inc.(a)		4,600		100,050
Phoenix Technologies Ltd.(a)		6,848		88,202
Progress Software Corp.(a)		400		13,472
SeaChange International, Inc.(a)		7,470		54,008
Sybase, Inc.(a)		4,423		115,396
Synchronoss Technologies, Inc.(a) (b)		5,182		183,650
SYNNEX Corp.(a)		18,252		357,739
Taleo Corp., Cl. A(a)		20,467		609,507
				3,709,960
Telecommunications — 4.0%
ADTRAN, Inc.(b)		40,935		875,190
Applied Signal Technology, Inc.		2,000		27,160
Aruba Networks, Inc.(a) (b)		39,153		583,771
Atlantic Tele-Network, Inc.		8,548		288,751
Cbeyond, Inc.(a)		14,200		553,658
CommScope, Inc.(a)		17,600		866,096
Consolidated Communications Holdings, Inc.		8,086		160,911
EMS Technologies, Inc.(a)		13,891		420,064
Fairpoint Communications, Inc.		77		1,003
IDT Corp. Cl. B		16,748		141,521
Loral Space & Communications(a)		20,681		708,324
Network Equipment Technologies, Inc.(a)		11,902		100,215
Novatel Wireless, Inc.(a)		35,195		570,159
NTELOS Holdings Corp.		50,221		1,491,061
Plantronics, Inc.		18,723		486,798
Premiere Global Services, Inc.(a)		54,770		813,335
RF Micro Devices, Inc.(a) (b)		113,593		648,616
Shenandoah Telecom Co.		12,014		288,096
Surewest Communications		14,490		247,779
Tekelec(a)		1,001		12,513
USA Mobility, Inc.(a)		43,204		617,817
				9,902,838

	Number of Shares		Market Value
Transportation — 2.7%
Arkansas Best Corp.		22,700	$	498,038
Con-way, Inc.		23,000		955,420
Dynamex, Inc.(a)		600		16,236
Genco Shipping & Trading Ltd.		10,800		591,408
General Maritime Corp.		29,449		720,028
Golar LNG Ltd.(b)		19,611		433,795
Gulfmark Offshore, Inc.(a)		19,638		918,862
Knightsbridge Tankers Ltd.		500		12,075
Ryder System, Inc.		22,500		1,057,725
TBS International Ltd.(a)		24,886		822,731
Werner Enterprises, Inc.(b)		39,647		675,188
				6,701,506
Trucking & Leasing — 0.4%
GATX Corp.		25,600		939,008
TOTAL EQUITIES (Cost $253,375,411)				230,539,150
	Principal Amount
SHORT-TERM INVESTMENTS — 20.4%
Cash Equivalents — 17.4%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	1,029,258		1,029,258
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		1,029,258		1,029,258
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		617,554		617,554
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		823,407		823,407
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		823,407		823,407
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		514,629		514,629
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		514,629		514,629
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		1,440,961		1,440,961
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		823,407		823,407

	Principal Amount		Market Value
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008	$	617,554	$	617,554
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		514,629		514,629
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		617,554		617,554
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		617,554		617,554
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		617,554		617,554
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		617,554		617,554
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		823,407		823,407
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		1,029,258		1,029,258
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		4,374,346		4,374,346
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		823,407		823,407
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		617,554		617,554
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		514,629		514,629
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		926,332		926,332
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		308,778		308,778
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		1,029,258		1,029,258
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		1,029,258		1,029,258
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		1,029,258		1,029,258
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		617,554		617,554

(Continued)

The accompanying notes are an integral part of the financial statements.

103

MML Small Cap Value Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008	$	617,554	$	617,554
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		720,481		720,481
Reserve Primary Money Market Fund(c)		2,446,033		2,446,033
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		1,029,258		1,029,258
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		514,629		514,629
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		514,629		514,629
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		823,407		823,407
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		720,481		720,481
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		720,481		720,481
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		6,060,652		6,060,652
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		1,029,258		1,029,258
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		411,703		411,703
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		1,029,258		1,029,258
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		1,029,258		1,029,258
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		514,629		514,629
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		720,481		720,481
				43,244,140

	Principal Amount		Market Value
Repurchase Agreements — 3.0%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)	$	7,553,826	$	7,553,826
TOTAL SHORT-TERM INVESTMENTS (Cost $50,797,966)				50,797,966
TOTAL INVESTMENTS — 113.2% (Cost $304,173,377)(f)				281,337,116
Other Assets/ (Liabilities) — (13.2%)				(32,754,031	)
NET ASSETS — 100.0%			$	248,583,085

Notes to Portfolio of Investments

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $7,554,896. Collateralized by U.S. Government Agency obligations with rates ranging from 4.579% to 5.328%, maturity dates ranging from 05/15/2035 to 07/01/2035, and an aggregate market value, including accrued interest, of $7,705,768.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

104

MML Small Cap Index Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 99.1%
COMMON STOCK — 99.1%
Advertising — 0.2%
inVentiv Health, Inc.(a)		3,564	$	110,342
Aerospace & Defense — 2.2%
AAR Corp.(a)		4,200		159,726
Curtiss-Wright Corp.(b)		5,000		251,000
Esterline Technologies Corp.(a)		3,203		165,755
GenCorp, Inc.(a)		6,100		71,126
Kaman Corp.		2,700		99,387
Moog, Inc. Cl. A(a) (b)		4,700		215,307
Teledyne Technologies, Inc.(a) (b)		3,900		207,987
Triumph Group, Inc.		1,900		156,465
				1,326,753
Agriculture — 0.2%
Alliance One International, Inc.(a)		9,900		40,293
Andersons, Inc. (The)		2,000		89,600
				129,893
Airlines — 0.4%
Frontier Airlines Holdings, Inc.(a)		4,200		22,092
Mesa Air Group, Inc.(a)		3,500		10,815
SkyWest, Inc.		6,700		179,895
				212,802
Apparel — 1.9%
Crocs, Inc.(a) (b)		9,200		338,652
Deckers Outdoor Corp.(a)		1,400		217,084
Iconix Brand Group, Inc.(a) (b)		6,400		125,824
Kellwood Co.(b)		2,800		46,592
K-Swiss, Inc. Cl. A		3,000		54,300
Maidenform Brands, Inc.(a)		2,100		28,413
Oxford Industries, Inc.		1,700		43,809
Skechers U.S.A., Inc. Cl. A(a)		3,600		70,236
Volcom, Inc.(a) (b)		1,600		35,248
Wolverine World Wide, Inc.		6,000		147,120
				1,107,278
Auto Manufacturers — 0.1%
A.S.V., Inc.(a) (b)		2,200		30,470
Wabash National Corp.		3,400		26,146
				56,616

	Number of Shares		Market Value
Automotive & Parts — 0.1%
Spartan Motors, Inc.(b)		3,600	$	27,504
Standard Motor Products, Inc.		1,300		10,608
Superior Industries International, Inc.(b)		2,500		45,425
				83,537
Banks — 5.9%
Alabama National Bancorp		1,800		140,058
Bank Mutual Corp.		5,900		62,363
Boston Private Financial Holdings, Inc.(b)		4,100		111,028
Cascade Bancorp(b)		3,100		43,152
Central Pacific Financial Corp.		3,400		62,764
Columbia Banking Systems, Inc.		2,000		59,460
Community Bank System, Inc.		3,200		63,584
Corus Bankshares, Inc.(b)		3,800		40,546
East West Bancorp, Inc.		7,000		169,610
First Bancorp(b)		8,310		60,580
First Commonwealth Financial Corp.(b)		6,900		73,485
First Financial Bancorp(b)		3,600		41,040
First Indiana Corp.		1,400		44,800
First Midwest Bancorp, Inc.(b)		5,600		171,360
Fremont General Corp.(a) (b)		7,400		25,900
Frontier Financial Corp.(b)		4,610		85,608
Glacier Bancorp, Inc.(b)		5,854		109,704
Hancock Holding Co.		2,700		103,140
Hanmi Financial Corp.		4,600		39,652
Independent Bank Corp.		2,320		22,040
Irwin Financial Corp.		2,100		15,435
Nara Bancorp, Inc.		2,300		26,841
PrivateBancorp, Inc.(b)		2,200		71,830
Prosperity Bancshares, Inc.(b)		4,182		122,909
Provident Bankshares Corp.		3,600		77,004
Signature Bank(a)		3,300		111,375
The South Financial Group, Inc.		8,000		125,040
Sterling Bancorp		2,200		30,008
Sterling Bancshares, Inc.		7,850		87,606
Sterling Financial Corp.		5,688		95,502
Susquehanna Bancshares, Inc.		9,500		175,180
TrustCo Bank Corp. NY(b)		8,300		82,336

	Number of Shares		Market Value
UCBH Holdings, Inc.		11,749	$	166,366
UMB Financial Corp.		4,000		153,440
Umpqua Holdings Corp.(b)		6,898		105,815
United Bankshares, Inc.(b)		4,258		119,309
United Community Banks, Inc.(b)		4,522		71,448
Whitney Holding Corp.		7,350		192,202
Wilshire Bancorp, Inc.		1,700		13,345
Wintrust Financial Corp.		2,612		86,536
				3,459,401
Beverages — 0.1%
Boston Beer Co., Inc. Cl. A(a)		1,100		41,415
Peet's Coffee & Tea, Inc.(a) (b)		1,400		40,698
				82,113
Biotechnology — 1.2%
Arqule, Inc.(a)		3,600		20,880
Cambrex Corp.		3,000		25,140
CryoLife, Inc.(a)		2,500		19,875
Enzo Biochem, Inc.(a) (b)		3,400		43,316
Integra LifeSciences Holdings Corp.(a) (b)		2,000		83,860
Lifecell Corp.(a)		3,337		143,858
Martek Biosciences Corp.(a) (b)		3,600		106,488
Regeneron Pharmaceuticals, Inc.(a)		7,308		176,488
Savient Pharmaceuticals, Inc.(a) (b)		4,860		111,634
				731,539
Building Materials — 1.5%
Apogee Enterprises, Inc.		3,300		56,463
Drew Industries, Inc.(a)		2,000		54,800
Gibraltar Industries, Inc.		3,300		50,886
Lennox International, Inc.		7,205		298,431
NCI Building Systems, Inc.(a) (b)		2,200		63,338
Simpson Manufacturing Co., Inc.(b)		4,100		109,019
Texas Industries, Inc.		3,016		211,422
Universal Forest Products, Inc.(b)		2,100		61,866
				906,225
Chemicals — 1.3%
Arch Chemicals, Inc.		2,700		99,225
Georgia Gulf Corp.(b)		3,900		25,818
H.B. Fuller Co.		6,800		152,660

(Continued)

The accompanying notes are an integral part of the financial statements.

105

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
OM Group, Inc.(a)		3,300	$	189,882
Omnova Solutions, Inc.(a)		4,600		20,286
Penford Corp.		1,200		30,708
PolyOne Corp.(a)		10,200		67,116
Quaker Chemical Corp.		1,200		26,364
Schulman (A.), Inc.		3,000		64,650
Tronox, Inc. Cl. B		4,600		39,790
Zep, Inc.(a) (b)		2,400		33,288
				749,787
Coal — 0.7%
Massey Energy Co.		8,800		314,600
Patriot Coal Corp.(a) (b)		3,000		125,220
				439,820
Commercial Services — 4.4%
Aaron Rents, Inc.		5,906		113,631
ABM Industries, Inc.		4,800		97,872
Administaff, Inc.(b)		2,700		76,356
AMN Healthcare Services, Inc.(a)		3,310		56,833
Arbitron, Inc.(b)		3,193		132,733
Bankrate, Inc.(a) (b)		1,400		67,326
Bowne & Co., Inc.		3,000		52,800
Bright Horizons Family Solutions, Inc.(a)		2,900		100,166
CDI Corp.		1,500		36,390
Chemed Corp.		2,643		147,691
Coinstar, Inc.(a)		3,100		87,265
Consolidated Graphics, Inc.(a)		1,324		63,314
CPI Corp.		600		14,130
Cross Country Healthcare, Inc.(a)		3,400		48,416
Gevity HR, Inc.		2,700		20,763
Healthcare Services Group, Inc.(b)		4,650		98,487
Heidrick & Struggles International, Inc.		2,000		74,220
Hooper Holmes, Inc.(a)		7,600		13,072
Kendle International, Inc.(a)		1,500		73,380
Live Nation, Inc.(a) (b)		8,133		118,091
Maximus, Inc.		2,100		81,081
Midas, Inc.(a)		1,500		21,990
On Assignment, Inc.(a)		3,700		25,937
PAREXEL International Corp.(a)		3,100		149,730
PharmaNet Development Group, Inc.(a)		2,200		86,262
Pre-Paid Legal Services, Inc.(a) (b)		1,000		55,350
Rewards Network, Inc.(a)		2,600		12,922
Spherion Corp.(a)		6,200		45,136

	Number of Shares		Market Value
Startek, Inc.(a)		1,400	$	13,034
TrueBlue, Inc.(a)		5,000		72,400
Universal Technical Institute, Inc.(a) (b)		2,500		42,500
Viad Corp.		2,300		72,634
Volt Information Sciences, Inc.(a)		1,500		27,390
Watson Wyatt Worldwide, Inc. Cl. A		4,700		218,127
Wright Express Corp.(a)		4,400		156,156
				2,573,585
Computers — 2.6%
Agilysys, Inc.		2,900		43,848
Ansoft Corp.(a)		1,800		46,530
CACI International, Inc. Cl. A(a)		3,300		147,741
Catapult Communications Corp.(a)		1,300		9,815
Ciber, Inc.(a)		6,000		36,660
FactSet Research Systems, Inc.		4,800		267,360
Hutchinson Technology, Inc.(a)		3,000		78,960
Manhattan Associates, Inc.(a)		2,800		73,808
Mercury Computer Systems, Inc.(a)		2,600		41,886
MICROS Systems, Inc.(a)		4,600		322,736
MTS Systems Corp.		2,000		85,340
Radiant Systems, Inc.(a)		3,000		51,690
RadiSys Corp.(a)		2,400		32,160
SI International, Inc.(a)		1,500		41,205
Stratasys, Inc.(a) (b)		2,200		56,848
SYKES Enterprises, Inc.(a)		3,500		63,000
Synaptics, Inc.(a)		2,900		119,364
				1,518,951
Computers & Information — 0.2%
ScanSource, Inc.(a)		2,900		93,815
Consumer Products — 0.2%
Pool Corp.(b)		5,400		107,082
Cosmetics & Personal Care — 0.3%
Chattem, Inc.(a) (b)		2,100		158,634
Distribution & Wholesale — 0.5%
LKQ Corp.(a)		12,700		266,954
Diversified Financial — 1.3%
Financial Federal Corp.(b)		2,900		64,641
Investment Technology Group, Inc.(a)		4,900		233,191
LaBranche & Co., Inc.(a)		6,000		30,240

	Number of Shares		Market Value
optionsXpress Holdings, Inc.(b)		4,900	$	165,718
Piper Jaffray Cos.(a)		1,890		87,545
Portfolio Recovery Associates, Inc.(b)		1,800		71,406
SWS Group, Inc.		2,450		31,041
TradeStation Group, Inc.(a)		3,000		42,630
World Acceptance Corp.(a) (b)		1,900		51,262
				777,674
Electric — 1.5%
Allete, Inc.(b)		2,800		110,824
Avista Corp.		5,910		127,301
Central Vermont Public Service Corp.(b)		1,100		33,924
CH Energy Group, Inc.		1,500		66,810
Cleco Corp.		6,751		187,678
El Paso Electric Co.(a)		5,100		130,407
UIL Holdings Corp.		2,766		102,204
Unisource Energy Corp.		3,900		123,045
				882,193
Electrical Components & Equipment — 0.8%
Advanced Energy Industries, Inc.(a)		4,000		52,320
Belden, Inc.(b)		5,000		222,500
C&D Technologies, Inc.(a) (b)		3,200		21,152
Greatbatch, Inc.(a) (b)		2,500		49,975
Littelfuse, Inc.(a)		2,500		82,400
Magnetek, Inc.(a)		3,700		15,836
Vicor Corp.		2,100		32,739
				476,922
Electronics — 6.1%
Analogic Corp.		1,453		98,397
Bel Fuse, Inc. Cl. B		1,300		38,051
Benchmark Electronics, Inc.(a)		7,850		139,180
Brady Corp. Cl. A		5,958		209,066
Checkpoint Systems, Inc.(a)		4,300		111,714
CTS Corp.		4,000		39,720
Cubic Corp.		1,700		66,640
Cymer, Inc.(a)		3,332		129,715
Daktronics, Inc.(b)		3,600		81,252
Dionex Corp.(a)		2,100		174,006
Electro Scientific Industries, Inc.(a)		3,200		63,520
Faro Technologies, Inc.(a)		1,800		48,924
FEI Co.(a) (b)		4,000		99,320
FLIR Systems, Inc.(a)		15,164		474,633
Itron, Inc.(a) (b)		3,417		327,929

(Continued)

The accompanying notes are an integral part of the financial statements.

106

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Keithley Instruments, Inc.		1,600	$	15,488
Lo-Jack Corp.(a)		2,000		33,620
Methode Electronics, Inc.		4,100		67,404
Newport Corp.(a) (b)		4,300		54,997
Park Electrochemical Corp.		2,200		62,128
Photon Dynamics, Inc.(a)		1,800		14,940
Planar Systems, Inc.(a)		1,900		12,160
Plexus Corp.(a)		5,200		136,552
Rogers Corp.(a)		1,962		85,092
Sonic Solutions, Inc.(a)		3,000		31,170
Technitrol, Inc.		4,500		128,610
Trimble Navigation Ltd.(a)		13,554		409,873
TTM Technologies, Inc.(a)		4,700		54,802
Watts Water Technologies, Inc. Cl. A(b)		3,620		107,876
Woodward Governor Co.		3,300		224,235
X-Rite, Inc.(a)		3,100		36,022
				3,577,036
Energy – Alternate Sources — 0.1%
Headwaters, Inc.(a) (b)		4,700		55,178
Engineering & Construction — 1.3%
Emcor Group, Inc.(a)		7,100		167,773
Insituform Technologies, Inc. Cl. A(a)		3,000		44,400
The Shaw Group, Inc.(a)		9,100		550,004
				762,177
Entertainment — 0.3%
Pinnacle Entertainment, Inc.(a)		6,700		157,852
Shuffle Master, Inc.(a) (b)		3,900		46,761
				204,613
Environmental Controls — 0.6%
TETRA Technologies, Inc.(a) (b)		6,600		141,900
Waste Connections, Inc.(a)		7,437		229,803
				371,703
Foods — 2.1%
Flowers Foods, Inc.		8,550		200,155
Great Atlantic & Pacific Tea Co.(a) (b)		2,532		79,328
Hain Celestial Group, Inc.(a)		4,500		144,000
J&J Snack Foods Corp.		1,500		46,920
Lance, Inc.		3,400		69,428
Nash Finch Co.(b)		1,500		52,920
Performance Food Group Co.(a)		3,900		104,793
Ralcorp Holdings, Inc.(a)		2,880		175,075
Sanderson Farms, Inc.(b)		1,800		60,804

	Number of Shares		Market Value
Spartan Stores, Inc.		2,400	$	54,840
TreeHouse Foods, Inc.(a)		3,500		80,465
United Natural Foods, Inc.(a) (b)		4,700		149,084
				1,217,812
Forest Products & Paper — 0.9%
Buckeye Technologies, Inc.(a)		4,200		52,500
Building Materials Holding Corp.(b)		3,200		17,696
Caraustar Industries, Inc.(a)		3,300		10,197
Deltic Timber Corp.		1,100		56,639
Neenah Paper, Inc.		1,600		46,640
Rock-Tenn Co. Cl. A		3,800		96,558
Schweitzer-Mauduit International, Inc.		1,700		44,047
United Stationers, Inc.(a)		2,840		131,236
Wausau Paper Corp.		5,300		47,647
				503,160
Gas — 3.1%
Atmos Energy Corp.		9,967		279,475
The Laclede Group, Inc.		2,400		82,176
New Jersey Resources Corp.		3,100		155,062
Northwest Natural Gas Co.		2,900		141,114
Piedmont Natural Gas Co., Inc.(b)		8,200		214,512
South Jersey Industries, Inc.		3,200		115,488
Southern Union Co.		13,287		390,106
Southwest Gas Corp.		4,600		136,942
UGI Corp.		11,900		324,275
				1,839,150
Hand & Machine Tools — 0.6%
Baldor Electric Co.		5,206		175,234
Regal-Beloit Corp.		3,500		157,325
				332,559
Health Care – Products — 5.0%
American Medical Systems Holdings, Inc.(a) (b)		7,900		114,234
ArthoCare Corp.(a) (b)		3,000		144,150
Biolase Technology, Inc.(a)		2,900		6,844
CONMED Corp.(a)		3,100		71,641
Cooper Cos., Inc.		4,900		186,200
Cyberonics, Inc.(a)		2,400		31,584
Datascope Corp.		1,400		50,960
Haemonetics Corp.(a) (b)		2,900		182,758
ICU Medical, Inc.(a)		1,400		50,414

	Number of Shares		Market Value
IDEXX Laboratories, Inc.(a)		6,900	$	404,547
Immucor, Inc.(a)		7,800		265,122
Invacare Corp.(b)		3,600		90,720
Kensey Nash Corp.(a)		1,300		38,896
LCA-Vision, Inc.(b)		2,200		43,934
Mentor Corp.(b)		3,736		146,078
Meridian Bioscience, Inc.		4,300		129,344
Merit Medical Systems, Inc.(a)		3,200		44,480
Osteotech, Inc.(a)		2,200		17,204
Palomar Medical Technologies, Inc.(a)		2,000		30,640
Possis Medical, Inc.(a)		1,900		27,702
PSS World Medical, Inc.(a)		7,400		144,818
Respironics, Inc.(a)		8,200		536,936
SurModics, Inc.(a) (b)		1,700		92,259
Symmetry Medical, Inc.(a)		4,000		69,720
Vital Signs, Inc.		900		46,008
				2,967,193
Health Care – Services — 3.4%
Amedisys, Inc.(a)		3,001		145,609
AMERIGROUP Corp.(a) (b)		5,800		211,410
AmSurg Corp.(a)		3,400		92,004
Centene Corp.(a)		4,800		131,712
Gentiva Health Services, Inc.(a)		3,100		59,024
Healthways, Inc.(a) (b)		4,000		233,760
LHC Group, Inc.(a)		1,500		37,470
Matria Healthcare, Inc.(a) (b)		2,400		57,048
Medcath Corp.(a)		1,500		36,840
Molina Healthcare, Inc.(a) (b)		1,600		61,920
Odyssey Healthcare, Inc.(a)		3,800		42,028
Pediatrix Medical Group, Inc.(a)		5,400		368,010
RehabCare Group, Inc.(a)		1,900		42,864
Res-Care, Inc.(a)		2,700		67,932
Sierra Health Services, Inc.(a)		6,182		259,397
Sunrise Senior Living, Inc.(a) (b)		5,100		156,468
				2,003,496
Home Builders — 0.6%
Champion Enterprises, Inc.(a) (b)		8,500		80,070
Coachmen Industries, Inc.		1,800		10,710
Fleetwood Enterprises, Inc.(a)		7,200		43,056
M/I Homes, Inc.(b)		1,400		14,700

(Continued)

The accompanying notes are an integral part of the financial statements.

107

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Meritage Homes Corp.(a) (b)		2,800	$	40,796
Monaco Coach Corp.		3,100		27,528
Skyline Corp.		800		23,480
Standard-Pacific Corp.(b)		7,538		25,252
Winnebago Industries, Inc.(b)		3,400		71,468
				337,060
Home Furnishing — 0.4%
Audiovox Corp. Cl. A(a)		2,100		26,040
Bassett Furniture Industries, Inc.		1,300		12,142
Ethan Allen Interiors, Inc.(b)		3,400		96,900
La-Z-Boy, Inc.(b)		5,600		44,408
Universal Electronics, Inc.(a)		1,600		53,504
				232,994
Household Products — 0.7%
Central Garden & Pet Co. Cl. A(a)		7,900		42,344
Fossil, Inc.(a)		5,100		214,098
Russ Berrie and Co., Inc.(a)		1,700		27,812
Spectrum Brands, Inc.(a) (b)		4,400		23,452
The Standard Register Co.		1,600		18,656
WD-40 Co.		1,900		72,143
				398,505
Housewares — 0.5%
Libbey, Inc.(b)		1,600		25,344
National Presto Industries, Inc.		500		26,330
The Toro Co.(b)		4,400		239,536
				291,210
Insurance — 3.0%
Delphi Financial Group, Inc. Cl. A		4,850		171,108
Hilb, Rogal & Hobbs Co.		4,000		162,280
Infinity Property & Casualty Corp.		1,792		64,745
Landamerica Financial Group, Inc.		1,705		57,032
Navigators Group, Inc.(a)		1,500		97,500
Philadelphia Consolidated Holding Corp.(a)		6,400		251,840
Presidential Life Corp.		2,500		43,775
ProAssurance Corp.(a)		3,635		199,634
RLI Corp.		2,200		124,938
Safety Insurance Group, Inc.		1,700		62,254

	Number of Shares		Market Value
SCPIE Holdings, Inc.(a)		1,000	$	27,470
Selective Insurance Group		5,910		135,871
Stewart Information Services		2,000		52,180
Tower Group, Inc.		2,200		73,480
Triad Guaranty, Inc.(a) (b)		1,500		14,700
United Fire & Casualty Co.		2,351		68,391
Zenith National Insurance Corp.		4,100		183,393
				1,790,591
Internet — 1.8%
Blue Coat Systems, Inc.(a)		4,200		138,054
Blue Nile, Inc.(a) (b)		1,800		122,508
CyberSources Corp.(a)		7,699		136,811
DealerTrack Holdings, Inc.(a)		3,300		110,451
InfoSpace, Inc.		3,600		67,680
j2 Global Communications, Inc.(a)		5,600		118,552
Knot (The), Inc.(a)		3,000		47,820
Napster, Inc.(a)		5,500		10,835
PC-Tel, Inc.(a)		2,700		18,522
Perficient, Inc.(a)		3,300		51,942
Secure Computing Corp.(a)		6,300		60,480
Stamps.com, Inc.(a)		1,900		23,142
United Online, Inc.		7,300		86,286
Websense, Inc.(a)		4,868		82,659
				1,075,742
Iron & Steel — 0.0%
Material Sciences Corp.(a)		1,600		11,888
Leisure Time — 0.7%
Arctic Cat, Inc.(b)		1,400		16,716
Multimedia Games, Inc.(a) (b)		2,500		20,850
Nautilus, Inc.		3,500		16,975
Polaris Industries, Inc.(b)		3,962		189,265
WMS Industries, Inc.(a) (b)		4,500		164,880
				408,686
Lodging — 0.1%
Marcus Corp.		2,400		37,080
Monarch Casino & Resort, Inc.(a)		1,500		36,120
				73,200
Machinery – Construction & Mining — 0.1%
Astec Industries, Inc.(a)		2,100		78,099
Machinery – Diversified — 1.7%
Albany International Corp. Cl. A		2,885		107,033

	Number of Shares		Market Value
Applied Industrial Technologies, Inc.		4,100	$	118,982
Briggs & Stratton Corp.(b)		5,700		129,162
Cascade Corp.(b)		1,100		51,106
Cognex Corp.		4,700		94,705
Gardner Denver, Inc.(a)		5,900		194,700
Gerber Scientific, Inc.(a)		2,500		27,000
Intevac, Inc.(a)		2,400		34,896
Lindsay Corp.(b)		1,300		91,897
Robbins & Myers, Inc.(b)		1,900		143,697
				993,178
Machinery & Components — 0.2%
Watsco, Inc.(b)		2,700		99,252
Manufacturing — 2.4%
A.O. Smith Corp.		2,500		87,625
Acuity Brands, Inc.		4,800		216,000
AptarGroup, Inc.		7,700		315,007
Barnes Group, Inc.		5,000		166,950
Ceradyne, Inc.(a)		3,100		145,483
Clarcor, Inc.		5,400		205,038
EnPro Industries, Inc.(a)		2,400		73,560
Griffon Corp.(a) (b)		3,000		37,350
Lydall, Inc.(a)		1,800		18,936
Myers Industries, Inc.		3,000		43,410
Standex International Corp.		1,400		24,430
Sturm, Ruger & Co., Inc.(a)		2,400		19,872
Tredegar Corp.		2,700		43,416
				1,397,077
Media — 0.1%
4Kids Entertainment, Inc.(a)		1,400		18,410
Radio One, Inc. Cl. D(a)		8,800		20,856
				39,266
Medical Supplies — 0.3%
Owens & Minor, Inc.		4,400		186,692
Metal Fabricate & Hardware — 1.3%
Castle (A.M.) & Co.		1,790		48,670
Kaydon Corp.(b)		3,200		174,528
Lawson Products		480		18,202
Mueller Industries, Inc.		4,100		118,859
Quanex Corp.		4,100		212,790
Valmont Industries, Inc.		1,900		169,328
				742,377
Mining — 0.9%
Amcol International Corp.		2,500		90,075
Brush Engineered Materials, Inc.(a)		2,200		81,840
Century Aluminum Co.(a)		3,221		173,741
RTI International Metals, Inc.(a)		2,600		179,218
				524,874

(Continued)

The accompanying notes are an integral part of the financial statements.

108

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Office Furnishings — 0.2%
Interface, Inc. Cl. A		6,225	$	101,592
Oil & Gas — 3.2%
Atwood Oceanics, Inc.(a) (b)		3,100		310,744
Cabot Oil & Gas Corp.		10,800		435,996
Penn Virginia Corp.		4,100		178,883
Petroleum Development Corp.(a)		1,600		94,608
Pioneer Drilling Co.(a)		5,500		65,340
St. Mary Land & Exploration Co.		7,121		274,942
Stone Energy Corp.(a)		3,100		145,421
Swift Energy Co.(a)		3,300		145,563
Unit Corp.(a)		5,200		240,500
				1,891,997
Oil & Gas Services — 3.9%
Basic Energy Services, Inc.(a) (b)		2,500		54,875
CARBO Ceramics, Inc.(b)		2,200		81,840
Dril-Quip, Inc.(a)		3,100		172,546
Gulf Island Fabrication, Inc.		1,200		38,052
Helix Energy Solutions Group, Inc.(a)		10,015		415,622
Hornbeck Offshore Services, Inc.(a) (b)		2,600		116,870
ION Geophysical Corp.(a)		9,000		142,020
Lufkin Industries, Inc.		1,600		91,664
Matrix Service Co.(a)		3,000		65,460
NATCO Group, Inc. Cl. A(a)		2,000		108,300
Oceaneering International, Inc.(a)		6,000		404,100
SEACOR Holdings, Inc.(a)		2,600		241,124
Superior Well Services, Inc.(a)		1,700		36,074
TETRA Technologies, Inc.(a)		8,100		126,117
W-H Energy Services, Inc.(a)		3,400		191,114
				2,285,778
Packaging & Containers — 0.0%
Chesapeake Corp.		2,300		11,937
Pharmaceuticals — 1.6%
Alpharma, Inc. Cl. A(a)		4,700		94,705
Bradley Pharmaceuticals, Inc.(a)		1,500		29,550
HealthExtras, Inc.(a)		4,000		104,320
Mannatech, Inc.(b)		1,800		11,376
MGI Pharma, Inc.(a)		9,000		364,770
Noven Pharmaceuticals, Inc.(a)		2,700		37,476

	Number of Shares		Market Value
PetMed Express, Inc.(a) (b)		2,700	$	32,670
PharMerica Corp.(a) (b)		3,400		47,192
Salix Pharmaceuticals Ltd.(a) (b)		5,300		41,764
Sciele Pharma, Inc.(a)		4,000		81,800
Theragenics Corp.(a)		4,000		14,320
USANA Health Sciences, Inc.(a) (b)		900		33,372
ViroPharma, Inc.(a)		7,800		61,932
				955,247
Real Estate — 0.2%
Forestar Real Estate Group, Inc.		3,900		92,001
Real Estate Investment Trusts (REITS) — 4.5%
Acadia Realty Trust REIT		3,600		92,196
BioMed Realty Trust, Inc. REIT(b)		7,300		169,141
Colonial Properties Trust REIT(b)		5,100		115,413
DiamondRock Hospitality Co.(b)		10,400		155,792
Eastgroup Properties REIT		2,600		108,810
Entertainment Properties Trust REIT		3,173		149,131
Essex Property Trust, Inc. REIT		2,781		271,120
Extra Space Storage, Inc.		7,200		102,888
Inland Real Estate Corp.(b)		6,400		90,624
Kilroy Realty Corp.(b)		3,595		197,581
Kite Realty Group Trust REIT		3,300		50,391
Lexington Realty Trust REIT(b)		7,000		101,780
LTC Properties, Inc.		2,300		57,615
Medical Properties Trust, Inc.		5,500		56,045
Mid-America Apartment Communities, Inc. REIT		2,954		126,283
National Retail Properties, Inc. REIT(b)		7,985		186,689
Parkway Properties, Inc. REIT		1,713		63,347
PS Business Parks, Inc. REIT		1,800		94,590
Senior Housing Properties Trust(b)		9,828		222,899
Sovran Self Storage, Inc. REIT		2,365		94,836
Tanger Factory Outlet Centers, Inc. REIT(b)		3,400		128,214
				2,635,385

	Number of Shares		Market Value
Retail — 6.6%
Bell Microproducts, Inc.(a)		3,400	$	20,434
Big 5 Sporting Goods Corp.		2,500		36,050
Brown Shoe Co., Inc.		4,850		73,575
Buffalo Wild Wings, Inc.(a) (b)		1,700		39,474
Cabela's, Inc. Cl. A(a) (b)		4,400		66,308
California Pizza Kitchen, Inc.(a)		3,450		53,717
Casey's General Stores, Inc.		5,600		165,816
Cash America International, Inc.		3,300		106,590
Cato Corp. Cl. A		3,500		54,810
CEC Entertainment, Inc.(a)		3,261		84,656
Charlotte Russe Holding, Inc.(a)		2,800		45,220
Childrens Place(a) (b)		2,600		67,418
Christopher & Banks Corp.(b)		4,000		45,800
CKE Restaurants, Inc.		6,078		80,230
Dress Barn, Inc.(a)		5,000		62,550
The Finish Line, Inc. Cl. A		4,600		11,132
First Cash Financial Services, Inc.(a)		3,100		45,508
Fred's, Inc.		4,400		42,372
Genesco, Inc.(a)		2,500		94,500
Group 1 Automotive, Inc.(b)		2,495		59,256
The Gymboree Corp.(a)		3,200		97,472
Haverty Furniture Companies, Inc.(b)		2,600		23,374
Hibbett Sports, Inc.(a)		3,400		67,932
Hot Topic, Inc.(a)		5,000		29,100
IHOP Corp.(b)		1,600		58,528
Insight Enterprises, Inc.(a)		5,400		98,496
Jack in the Box, Inc.(a)		6,626		170,752
Jo-Ann Stores, Inc.(a)		2,700		35,316
Jos. A. Bank Clothiers, Inc.(a) (b)		2,000		56,900
Landry's Restaurants, Inc.(b)		1,379		27,166
Lithia Motors, Inc. Cl. A		1,800		24,714
Longs Drug Stores Corp.		3,500		164,500
MarineMax, Inc.(a) (b)		2,000		31,000
Men's Wearhouse, Inc.		5,800		156,484
Movado Group, Inc.		2,100		53,109
O'Charley's, Inc.		2,700		40,446
P.F. Chang's China Bistro, Inc.(a) (b)		2,900		66,236

(Continued)

The accompanying notes are an integral part of the financial statements.

109

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Panera Bread Co. Cl. A(a) (b)		3,500	$	125,370
Papa John's International, Inc.(a)		2,400		54,480
The PEP Boys - Manny, Moe & Jack(b)		4,600		52,808
Quiksilver, Inc.(a)		13,400		114,972
Red Robin Gourmet Burgers, Inc.(a)		1,800		57,582
Ruth's Chris Steak House(a)		2,000		17,880
School Specialty, Inc.(a) (b)		2,000		69,100
Select Comfort Corp.(a) (b)		5,013		35,141
Sonic Automotive, Inc.		3,500		67,760
Sonic Corp.(a)		6,743		147,672
Stage Stores, Inc.		4,578		67,754
The Steak n Shake Co.(a) (b)		3,100		33,790
Stein Mart, Inc.(b)		3,000		14,220
Texas Roadhouse, Inc. Cl. A(a)		6,000		66,360
Tractor Supply Co.(a) (b)		3,800		136,572
Triarc Cos. Cl. B		6,856		60,059
Tuesday Morning Corp.		3,300		16,731
Tween Brands, Inc.(a) (b)		2,700		71,496
World Fuel Services Corp.		3,200		92,896
Zale Corp.(a) (b)		5,000		80,300
Zumiez, Inc.(a) (b)		1,900		46,284
				3,886,168
Savings & Loans — 0.7%
Anchor Bancorp Wisconsin, Inc.		2,000		47,040
BankAtlantic Bancorp, Inc. Cl. A		4,700		19,270
Bankunited Financial Corp. Cl. A(b)		3,400		23,460
Brookline Bancorp, Inc.		6,500		66,040
Dime Community Bancshares		3,000		38,310
Downey Financial Corp.(b)		2,100		65,331
FirstFed Financial Corp.(a) (b)		1,513		54,196
Flagstar Bancorp, Inc.		4,000		27,880
Franklin Bank Corp.(a)		2,600		11,206
Guaranty Financial Group, Inc.		3,900		62,400
				415,133
Semiconductors — 3.3%
Actel Corp.(a)		3,000		40,980
AMIS Holdings, Inc.(a)		7,200		72,144

	Number of Shares		Market Value
ATMI, Inc.(a)		3,800	$	122,550
Axcelis Technologies, Inc.(a)		11,100		51,060
Brooks Automation, Inc.(a)		7,705		101,783
Cabot Microelectronics Corp.(a)		2,600		93,366
Cohu, Inc.		2,600		39,780
Diodes, Inc.(a) (b)		3,400		102,238
DSP Group, Inc.(a)		3,593		43,835
Exar Corp.(a)		5,400		43,038
Kopin Corp.(a)		7,800		24,648
Kulicke & Soffa Industries, Inc.(a)		5,958		40,872
Micrel, Inc.		6,100		51,545
Microsemi Corp.(a)		8,620		190,847
MKS Instruments, Inc.(a)		5,500		105,270
Pericom Semiconductor Corp.(a)		3,000		56,100
Photronics, Inc.(a)		4,600		57,362
Rudolph Technologies, Inc.(a)		3,100		35,092
Skyworks Solutions, Inc.(a)		17,700		150,450
Standard Microsystems Corp.(a)		2,500		97,675
Supertex, Inc.(a) (b)		1,500		46,935
Ultratech, Inc.(a)		2,600		29,484
Varian Semiconductor Equipment Associates, Inc.(a)		8,400		310,800
Veeco Instruments, Inc.(a)		3,500		58,450
				1,966,304
Software — 4.1%
Allscripts Healthcare Solutions, Inc.(a) (b)		6,200		120,404
Ansys, Inc.(a)		8,794		364,599
Avid Technology, Inc.(a) (b)		3,800		107,692
Blackbaud, Inc.		4,800		134,592
Captaris, Inc.(a)		3,100		13,392
Concur Technologies, Inc.(a)		4,791		173,482
Digi International, Inc.(a)		2,700		38,313
Epicor Software Corp.(a)		6,400		75,392
EPIQ Systems, Inc.(a) (b)		2,849		49,601
Informatica Corp.(a)		9,900		178,398
JDA Software Group, Inc.(a)		2,900		59,334
ManTech International Corp. Cl. A(a)		2,100		92,022
Omnicell, Inc.(a)		3,900		105,027
Phase Forward, Inc.(a)		4,600		100,050

	Number of Shares		Market Value
Phoenix Technologies Ltd.(a)		3,100	$	39,928
Progress Software Corp.(a)		4,600		154,928
Quality Systems, Inc.(b)		1,900		57,931
Smith Micro Software Inc.(a)		3,300		27,951
SPSS, Inc.(a)		2,200		79,002
SYNNEX Corp.(a)		1,800		35,280
Take-Two Interactive Software, Inc.(a)		8,100		149,445
THQ, Inc.(a)		7,500		211,425
Tyler Technologies, Inc.(a)		3,800		48,982
				2,417,170
Storage & Warehousing — 0.1%
Mobile Mini, Inc.(a)		4,000		74,160
Telecommunications — 2.0%
Adaptec, Inc.(a)		13,600		45,968
Anixter International, Inc.(a)		3,501		218,007
Applied Signal Technology, Inc.		1,300		17,654
Arris Group, Inc.(a)		15,102		150,718
Black Box Corp.		1,900		68,723
Comtech Telecommunications(a)		2,700		145,827
Ditech Networks, Inc.(a)		3,400		11,798
General Communication, Inc. Cl. A(a)		5,000		43,750
Harmonic, Inc.(a)		10,400		108,992
Netgear, Inc.(a)		3,900		139,113
Network Equipment Technologies, Inc.(a)		2,900		24,418
Novatel Wireless, Inc.(a)		3,665		59,373
Symmetricom, Inc.(a)		5,400		25,434
Tollgrade Communications, Inc.(a)		1,700		13,634
Viasat, Inc.(a)		2,800		96,404
				1,169,813
Telephone Utilities — 0.1%
Brightpoint, Inc.(a)		5,740		88,166
Textiles — 0.3%
Angelica Corp.		1,100		21,010
G&K Services, Inc. Cl. A		2,300		86,296
UniFirst Corp.		1,600		60,800
				168,106
Toys, Games & Hobbies — 0.2%
JAKKS Pacific, Inc.(a) (b)		3,100		73,191
RC2 Corp.(a)		2,264		63,550
				136,741

(Continued)

The accompanying notes are an integral part of the financial statements.

110

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Transportation — 2.1%
Arkansas Best Corp.(b)		2,800	$	61,432
Bristow Group, Inc.(a)		2,600		147,290
Forward Air Corp.		3,300		102,861
Heartland Express, Inc.(b)		6,399		90,738
Hub Group, Inc. Cl. A(a)		4,400		116,952
Kirby Corp.(a)		5,900		274,232
Knight Transportation, Inc.(b)		6,400		94,784
Landstar System, Inc.		6,000		252,900
Old Dominion Freight Line, Inc.(a)		3,100		71,641
				1,212,830
Water — 0.1%
American States Water Co.		1,900		71,592
TOTAL EQUITIES (Cost $61,303,877)				58,346,804
MUTUAL FUND — 0.0%
Investment Companies
iShares S&P SmallCap 600 Index Fund		573		37,337
TOTAL MUTUAL FUND (Cost $35,711)				37,337
TOTAL LONG TERM INVESTMENTS (Cost $61,339,588)				58,384,141
	Principal Amount
SHORT-TERM INVESTMENTS — 25.7%
Cash Equivalents — 24.6%(e)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	345,347		345,347
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		345,347		345,347
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		207,208		207,208
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		276,278		276,278
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		276,278		276,278

	Principal Amount		Market Value
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008	$	172,673	$	172,673
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		172,673		172,673
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		483,486		483,486
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		276,278		276,278
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		207,208		207,208
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		172,673		172,673
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		207,208		207,208
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		207,208		207,208
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		207,208		207,208
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		207,208		207,208
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		276,278		276,278
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		345,347		345,347
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		1,467,724		1,467,724
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		276,278		276,278
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		207,208		207,208
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		172,673		172,673
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		310,812		310,812
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		103,604		103,604

	Principal Amount		Market Value
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008	$	345,347	$	345,347
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		345,347		345,347
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		345,347		345,347
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		207,208		207,208
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		207,208		207,208
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		241,743		241,743
Reserve Primary Money Market Fund(c)		820,717		820,717
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		345,347		345,347
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		172,673		172,673
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		172,673		172,673
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		276,278		276,278
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		241,743		241,743
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		241,743		241,743
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		2,033,530		2,033,530
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		345,347		345,347
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		138,139		138,139

(Continued)

The accompanying notes are an integral part of the financial statements.

111

MML Small Cap Index Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008	$	345,347	$	345,347
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		345,347		345,347
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		172,673		172,673
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		241,743		241,743
				14,509,705
Repurchase Agreements — 0.9%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(f)		530,746		530,746
U.S. Treasury Bills — 0.2%
U.S. Treasury Bill(d) 4.650% 01/17/2008		90,000		89,813
TOTAL SHORT-TERM INVESTMENTS (Cost $15,130,264)				15,130,264
TOTAL INVESTMENTS — 124.8% (Cost $76,469,852)(g)				73,514,405
Other Assets/ (Liabilities) — (24.8%)				(14,621,087	)
NET ASSETS — 100.0%			$	58,893,318

Notes to Portfolio of Investments

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) This security is held as collateral for open futures contracts. (Note 2).

(e) Represents investments of security lending collateral. (Note 2).

(f) Maturity value of $530,821. Collateralized by a U.S. Government Agency obligation with a rate of 4.819%, maturity date of 10/01/2035, and an aggregate market value, including accrued interest, of $545,305.

(g) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

112

MML Global Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 95.8%
COMMON STOCK — 95.0%
Advertising — 0.7%
IPSOS		8,822	$	252,603
SR Teleperformance		3,100		120,882
				373,485
Aerospace & Defense — 1.4%
L-3 Communications Holdings, Inc.		2,250		238,365
Raytheon Co.		2,350		142,645
United Technologies Corp.		4,525		346,343
				727,353
Auto Manufacturers — 0.9%
Nissan Motor Co. Ltd.		44,000		475,084
Automotive & Parts — 1.9%
Bosch Corp.		14,200		69,244
Continental AG		3,253		424,625
F.C.C. Co. Ltd.		19,800		351,323
Hyundai Mobis(a)		2,005		186,248
				1,031,440
Banks — 8.1%
Allied Irish Banks PLC		9,970		227,972
Anglo Irish Bank Corp. PLC		1,047		16,705
Bank of America Corp.		14,900		614,774
The Bank of New York Mellon Corp.		6,851		334,055
Barclays PLC		16,691		170,399
BNP Paribas SA		1,498		162,089
Daegu Bank(a)		14,030		230,202
DnB Nor ASA		28,310		430,500
Fortis		10,091		263,966
Hypo Real Estate Holding AG		8,756		458,524
Lloyds TSB Group PLC		59,728		561,295
State Street Corp.		3,000		243,600
U.S. Bancorp		7,700		244,398
Wachovia Corp.(b)		10,440		397,033
				4,355,512
Beverages — 2.0%
The Coca-Cola Co.		4,700		288,439
InBev		7,513		623,895
Pernod-Ricard SA		720		166,921
				1,079,255

	Number of Shares		Market Value
Building Materials — 2.2%
CRH PLC (London)		18,328	$	634,732
Marazzi Gruppo Ceramiche SpA		22,554		211,436
Titan Cement Co.		3,230		147,791
Wavin Nv		13,175		175,422
				1,169,381
Chemicals — 2.5%
Aica Kogyo Co. Ltd.		8,200		77,142
Praxair, Inc.		3,200		283,872
Ultrapar Participaceos SA(b)		7,075		245,078
Wacker Chemie AG		2,550		736,214
				1,342,306
Commercial Services — 2.6%
Experian Ltd.		25,035		200,527
MacDonald Dettwiler & Associates Ltd.(a)		14,115		599,432
Northgate PLC		9,874		151,297
Pasona Group, Inc.		109		103,138
RPS Group PLC		21,718		138,709
Stantec, Inc.(a)		5,385		213,023
				1,406,126
Computers — 2.6%
Alten(a)		4,085		157,064
Hewlett-Packard Co.		1,800		90,864
International Business Machines Corp.		3,550		383,755
TPV Technology Ltd.		319,000		230,495
Wincor Nixdorf AG		5,372		509,588
				1,371,766
Cosmetics & Personal Care — 1.3%
Natura Cosmeticos SA		16,975		160,483
The Procter & Gamble Co.		6,950		510,269
				670,752
Diversified Financial — 4.0%
Citigroup, Inc.		20,820		612,941
Freddie Mac		11,300		384,991
The Goldman Sachs Group, Inc.		950		204,297
JP Morgan Chase & Co.		13,200		576,180
Morgan Stanley		6,000		318,660
Paragon Group of Cos. PLC		9,285		24,681
				2,121,750

	Number of Shares		Market Value
Electric — 1.5%
Entergy Corp.		3,725	$	445,212
Public Service Enterprise Group, Inc.		3,800		373,312
				818,524
Electrical Components & Equipment — 1.8%
Energizer Holdings, Inc.(a)		1,750		196,228
Laird Group PLC		12,840		148,429
Leoni AG		7,165		350,538
Zumtobel AG		7,830		282,909
				978,104
Electronics — 1.3%
Chemring Group PLC		3,665		150,373
Ibiden Co. Ltd.		3,300		227,306
Kaga Electronics Co. Ltd.		12,200		184,967
Rexel SA(a)		8,365		153,093
				715,739
Engineering & Construction — 0.5%
Chiyoda Corp.		16,000		182,372
Takuma Co. Ltd.		20,000		80,352
				262,724
Entertainment — 0.5%
William Hill PLC		24,420		255,253
Foods — 0.6%
Colruyt SA		1,040		245,159
Premier Foods PLC		24,905		101,560
				346,719
Gas — 0.5%
Sempra Energy		4,700		290,836
Health Care – Products — 3.7%
Baxter International, Inc.		10,400		603,720
Covidien Ltd.		11,500		509,335
Hogy Medical Co. Ltd.		3,000		126,280
Johnson & Johnson		4,600		306,820
Nihon Kohden Corp.		6,200		146,052
Topcon Corp.		9,900		92,906
Zimmer Holdings, Inc.(a)		2,600		171,990
				1,957,103
Health Care – Services — 0.9%
UnitedHealth Group, Inc.		8,100		471,420
Holding Company – Diversified — 0.4%
DCC PLC		8,465		239,245

(Continued)

The accompanying notes are an integral part of the financial statements.

113

MML Global Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Home Builders — 0.6%
Barratt Developments PLC		15,565	$	143,384
Kaufman & Broad SA		649		25,946
Redrow PLC		24,906		164,462
				333,792
Home Furnishing — 0.3%
Advanced Digital Broadcast Holdings SA(a)		4,009		113,673
Nobia AB		8,035		71,918
				185,591
Insurance — 4.9%
American International Group, Inc.		8,700		507,210
Amlin PLC		23,177		137,314
Amlin PLC Cl. B(g)		26,074		11,717
Berkshire Hathaway, Inc. Cl. B(a)		77		364,672
Lincoln National Corp.		7,170		417,437
Metlife, Inc.		6,950		428,259
Milano Assicurazioni SpA		49,205		385,595
Swiss Reinsurance		5,085		359,079
				2,611,283
Iron & Steel — 0.5%
Sumitomo Metal Industries Ltd.		58,000		267,092
Leisure Time — 1.5%
Heiwa Corp.		20,700		182,731
Mars Engineering Corp.		1,900		21,731
Raymarine PLC		26,000		151,933
Sankyo Co. Ltd.		7,100		328,258
Yamaha Motor Co. Ltd.		5,600		135,475
				820,128
Machinery – Construction & Mining — 0.7%
Caterpillar, Inc.		3,200		232,192
Terex Corp.(a)		2,100		137,697
				369,889
Machinery – Diversified — 1.2%
Pfeiffer Vacuum Technology AG		2,465		198,769
Rockwell Automation, Inc.		6,810		469,618
				668,387
Manufacturing — 1.8%
Aalberts Industries NV		10,540		209,116
General Electric Co.		18,650		691,356
Tenma Corp.		4,900		84,753
				985,225

	Number of Shares		Market Value
Media — 2.1%
Corus Entertainment, Inc. Cl. B		5,205	$	255,829
EchoStar Communications Corp. Cl. A(a)		3,700		139,564
Informa PLC		34,245		315,698
Viacom, Inc. Cl. B(a)		9,500		417,240
				1,128,331
Metal Fabricate & Hardware — 2.1%
Maruichi Steel Tube Ltd.(b)		7,600		188,029
Tenaris SA ADR (Argentina)(b)		6,065		271,287
Vallourec SA		2,408		652,519
				1,111,835
Metals & Mining — 0.4%
Kloeckner & Co.		4,960		198,185
Mining — 2.4%
Cia Vale do Rio Doce Sponsored ADR (Brazil)		18,375		514,133
Freeport-McMoran Copper & Gold, Inc.		3,831		392,448
Paladin Energy Ltd.(a)		60,391		354,993
				1,261,574
Oil & Gas — 17.0%
Addax Petroleum Corp.		12,820		560,084
Apache Corp.		5,450		586,093
Burren Energy PLC		5,816		141,507
Canadian Natural Resources Ltd.		8,540		630,488
Cat Oil AG(a)		16,060		353,080
Chevron Corp.		4,000		373,320
ConocoPhillips		6,830		603,089
Dragon Oil PLC(a)		65,923		456,684
Exxon Mobil Corp.		12,300		1,152,387
First Calgary Petroleums Ltd.(a)		48,670		143,074
Occidental Petroleum Corp.		13,130		1,010,879
Petroleo Brasileiro SA Sponsored ADR (Brazil)		6,635		764,617
Suncor Energy, Inc.		5,702		625,923
Talisman Energy, Inc.		16,405		306,874
Total SA Sponsored ADR (France)		4,695		387,807
Tullow Oil PLC		22,799		296,476
Valero Energy Corp.		1,900		133,057
Woodside Petroleum Ltd.		6,768		297,709
XTO Energy, Inc.		5,437		279,244
				9,102,392
Oil & Gas Services — 0.5%
ProSafe SE		14,900		257,576

	Number of Shares		Market Value
Packaging & Containers — 1.2%
Gerresheimer AG(a)		4,960	$	277,373
Pactiv Corp.(a)		12,700		338,201
				615,574
Pharmaceuticals — 2.1%
Eli Lilly & Co.		3,400		181,526
GlaxoSmithKline PLC		5,082		129,977
NBTY, Inc.(a)		12,700		347,980
OPG Groep NV		4,695		130,573
Pfizer, Inc.		14,450		328,449
				1,118,505
Real Estate — 0.2%
Renta Corp. Real Estate SA		4,107		91,745
Retail — 3.5%
CVS Caremark Corp.		15,500		616,125
Macy's, Inc.		11,400		294,918
McDonald's Corp.		8,100		477,171
Punch Taverns PLC		20,081		306,352
Tiffany & Co.		4,450		204,834
				1,899,400
Savings & Loans — 0.2%
New York Community Bancorp, Inc.		7,000		123,060
Semiconductors — 0.9%
Applied Materials, Inc.		10,300		182,928
Icos Vision Systems NV(a)		2,528		112,855
Intel Corp.		3,100		82,646
Texas Instruments, Inc.		2,900		96,860
				475,289
Telecommunications — 7.7%
AT&T, Inc.		14,400		598,464
Cisco Systems, Inc.(a)		19,950		540,047
Corning, Inc.		17,600		422,224
KT Corp.		6,320		328,815
Motorola, Inc.(b)		26,300		421,852
Option NV(a) (b)		16,150		132,732
Sepura Ltd.(a)		37,600		133,517
Sprint Nextel Corp.		24,200		317,746
Verizon Communications, Inc.		10,700		467,483
Vodafone Group PLC		198,089		744,073
				4,106,953
Textiles — 0.8%
Toray Industries, Inc.		54,000		418,385
Transportation — 0.5%
Euronav SA		7,721		273,442
TOTAL COMMON STOCK (Cost $49,093,262)				50,883,510

(Continued)

The accompanying notes are an integral part of the financial statements.

114

MML Global Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
PREFERRED STOCK — 0.8%
Auto Manufacturers — 0.5%
Porsche Automobil Holdings SE		135	$	273,846
Internet — 0.3%
Universo Online SA Preferred Stock(a)		27,290		181,988
TOTAL PREFERRED STOCK (Cost $299,243)				455,834
TOTAL EQUITIES (Cost $49,392,505)				51,339,344
	Principal Amount
SHORT-TERM INVESTMENTS — 7.1%
Cash Equivalents — 3.1%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	39,557		39,557
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		39,557		39,557
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		23,733		23,733
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		31,644		31,644
ABN AMRO Bank NV Eurodollar Time Deposit 5.185% 01/04/2008		31,644		31,644
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		19,777		19,777
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		19,777		19,777
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		55,377		55,377
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008		31,644		31,644
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		23,733		23,733
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		19,777		19,777

	Principal Amount		Market Value
Barclays Eurodollar Time Deposit 5.000% 01/22/2008	$	23,733	$	23,733
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		23,733		23,733
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		23,733		23,733
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		23,733		23,733
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		31,644		31,644
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		39,554		39,554
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		168,108		168,108
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		31,644		31,644
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		23,733		23,733
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		19,777		19,777
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		35,600		35,600
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		11,867		11,867
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		39,554		39,554
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		39,554		39,554
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		39,554		39,554
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008		23,733		23,733
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		23,733		23,733

	Principal Amount		Market Value
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008	$	27,688	$	27,688
Reserve Primary Money Market Fund(c)		94,002		94,002
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		39,554		39,554
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		19,777		19,777
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		19,777		19,777
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		31,644		31,644
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		27,688		27,688
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		27,688		27,688
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		232,913		232,913
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		39,554		39,554
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		15,821		15,821
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		39,554		39,554
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		39,554		39,554
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008		19,777		19,777
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		27,688		27,688
				1,661,886

(Continued)

The accompanying notes are an integral part of the financial statements.

115

MML Global Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Repurchase Agreements — 4.0%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)	$	2,117,162	$	2,117,162
TOTAL SHORT-TERM INVESTMENTS (Cost $3,779,048)				3,779,048
TOTAL INVESTMENTS — 102.9% (Cost $53,171,553)(f)				55,118,392
Other Assets/ (Liabilities) — (2.9%)				(1,533,217	)
NET ASSETS — 100.0%			$	53,585,175

Notes to Portfolio of Investments

ADR - American Depository Receipt

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $2,117,462. Collateralized by a U.S. Government Agency obligation with a rate of 4.789%, maturity date of 2/01/2035, and an aggregate market value, including accrued interest, of $2,160,163.

(f) See Note 6 for aggregate cost for Federal tax purposes.

(g) This security is valued in good faith under procedures established by the Board of Trustees.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

116

MML Foreign Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
EQUITIES — 94.9%
COMMON STOCK — 94.9%
Aerospace & Defense — 2.5%
BAE Systems PLC		468,220	$	4,621,561
Empresa Brasileira de Aeronautica SA ADR (Brazil)		70,250		3,202,697
Rolls-Royce Group PLC(a)		94,476		1,029,179
				8,853,437
Apparel — 0.5%
Burberry Group PLC		148,462		1,684,409
Auto Manufacturers — 1.2%
Bayerische Motoren Werke AG		67,981		4,225,584
Automotive & Parts — 1.9%
Compagnie Generale des Etablissements Michelin Cl. B		28,800		3,323,521
GKN PLC		242,496		1,361,360
NGK Spark Plug Co., Ltd.		76,000		1,323,091
Valeo SA		20,001		824,454
				6,832,426
Banks — 7.6%
Banco Santander SA		104,831		2,279,727
DBS Group Holdings Ltd.		167,653		2,379,392
HSBC Holdings PLC		205,600		3,437,985
Intesa Sanpaolo		429,442		3,390,317
Kookmin Bank Sponsored ADR (Korea)(a)		32,681		2,396,171
Mitsubishi Tokyo Financial Group, Inc.		193,000		1,791,438
Nordea Bank AB		116,605		1,936,405
Royal Bank of Scotland Group PLC		397,706		3,603,484
Sumitomo Mitsui Financial Group, Inc.(b)		269		1,996,123
UniCredito Italiano SpA		510,306		4,275,003
				27,486,045
Chemicals — 1.1%
Lonza Group AG Registered		32,250		3,904,956
Commercial Services — 2.6%
G4S PLC		983,650		4,788,943
Rentokil Initial PLC		362,302		872,057
Securitas AB Cl. B		73,842		1,030,427
Securitas Systems AB Cl. B		73,842		262,986
Vedior NV		89,940		2,260,077
				9,214,490

	Number of Shares		Market Value
Computers — 1.0%
Compal Electronics, Inc.		824,520	$	897,940
Lite-on Technology Corp.		1,022,822		1,772,028
Qimonda AG ADR (Germany)(a) (b)		158,800		1,135,420
				3,805,388
Diversified Financial — 3.6%
Aiful Corp.(b)		86,098		1,511,420
Hana Financial Group, Inc.		38,920		2,106,846
Invesco Ltd.		104,963		3,293,739
Mega Financial Holding Co. Ltd.		1,577,000		965,976
Nomura Holdings, Inc.		72,512		1,208,802
Promise Co. Limited(b)		68,150		1,673,501
Shinhan Financial Group Co., Ltd.(a)		39,560		2,269,839
				13,030,123
Electric — 3.0%
E.ON AG		28,360		6,061,271
National Grid PLC		83,533		1,391,905
Suez SA		47,044		3,209,915
				10,663,091
Electrical Components & Equipment — 2.6%
Gamesa Corporacion Tecnologica SA		85,643		3,988,565
Hitachi Ltd.		183,604		1,341,462
Vestas Wind Systems A/S(a)		36,612		3,939,097
				9,269,124
Electronics — 2.4%
Electrocomponents PLC		151,624		629,168
Flextronics International Ltd.(a)		85,990		1,037,039
Koninklijke Philips Electronics NV		91,150		3,976,295
Mabuchi Motor Co Ltd.(b)		26,653		1,604,712
Venture Corp. Ltd.		159,387		1,397,735
				8,644,949
Food Services — 1.1%
Compass Group PLC		652,012		4,006,684
Foods — 4.8%
Cadbury Schweppes PLC		207,920		2,612,151
George Weston, Ltd.		46,000		2,533,720
Morrison (WM) Supermarkets		268,761		1,747,139
Nestle SA		11,189		5,161,143
Unilever PLC		139,107		5,257,707
				17,311,860

	Number of Shares		Market Value
Forest Products & Paper — 1.7%
Norske Skogindustrier ASA(b)		148,439	$	1,218,188
Stora Enso Oyj Cl. R		154,009		2,321,356
UPM-Kymmene OYJ		128,810		2,597,801
				6,137,345
Gas — 0.3%
Centrica PLC		160,139		1,146,981
Holding Company – Diversified — 0.6%
Hutchison Whampoa Ltd.		189,291		2,128,972
Home Furnishing — 1.2%
Sony Corp.		52,235		2,826,849
Thomson Multimedia SA		101,660		1,446,200
				4,273,049
Insurance — 7.5%
ACE Ltd.		52,664		3,253,582
Aviva PLC		344,580		4,612,682
AXA SA		79,743		3,196,013
ING Groep NV		131,242		5,156,494
Muenchener Rueckversicherungs AG		18,160		3,533,681
Old Mutual PLC		1,311,736		4,383,293
Sompo Japan Insurance Inc.		92,515		831,124
Swiss Reinsurance		26,960		1,903,789
				26,870,658
Internet — 0.8%
Check Point Software Technologies Ltd.(a)		126,059		2,768,256
Iron & Steel — 0.6%
POSCO(b)		15,301		2,301,423
Leisure Time — 0.4%
TUI AG(a) (b)		48,560		1,357,519
Machinery – Diversified — 0.3%
Ebara Corp.(b)		281,000		960,455
Manufacturing — 3.6%
FUJIFILM Holdings Corp.		73,526		3,108,000
Olympus Corp.		52,210		2,133,196
Siemens AG		42,496		6,715,413
Smiths Group PLC		47,106		951,695
				12,908,304
Media — 5.6%
British Sky Broadcasting Group PLC		297,224		3,672,066
Mediaset SpA		326,852		3,308,042

(Continued)

The accompanying notes are an integral part of the financial statements.

117

MML Foreign Fund – Portfolio of Investments (Continued)

	Number of Shares		Market Value
Pearson PLC		251,304	$	3,680,578
Reed Elsevier NV(b)		132,421		2,644,329
Vivendi SA		95,940		4,400,561
Yell Group PLC		300,297		2,399,429
				20,105,005
Mining — 0.6%
Cia Vale do Rio Doce Sponsored ADR (Brazil)		74,872		2,094,919
Oil & Gas — 7.9%
BP PLC		417,384		5,144,483
ENI SpA		136,630		5,011,166
Repsol YPF SA		76,421		2,742,953
Royal Dutch Shell PLC		141,894		5,981,069
Sasol, Ltd., Sponsored ADR (South Africa)		81,380		4,025,869
Total SA		67,712		5,656,450
				28,561,990
Oil & Gas Services — 0.9%
Sbm Offshore NV		100,212		3,164,072
Packaging & Containers — 0.6%
Amcor Ltd.		362,922		2,196,011
Pharmaceuticals — 5.9%
Celesio AG		63,560		3,945,753
GlaxoSmithKline PLC		191,344		4,893,804
Merck KGaA		6,232		805,837
Novartis AG CHF		92,030		5,047,067
Sanofi-Aventis		49,288		4,534,655
Sanofi-Aventis		5,590		517,231
Takeda Pharmaceutical Co. Ltd.		24,346		1,419,264
				21,163,611
Real Estate — 0.9%
Cheung Kong Holdings		187,215		3,411,388
Retail — 0.8%
Kingfisher PLC		960,424		2,787,320
Semiconductors — 3.3%
Infineon Technologies AG(a)		260,107		3,061,440
Samsung Electronics Co., Ltd.		8,883		5,221,081
Taiwan Semiconductor Manufacturing Co. Ltd.		1,852,626		3,523,458
				11,805,979
Telecommunications — 14.3%
China Telecom Corp. Ltd.		4,991,643		3,896,640
Chunghwa Telecom Co., Ltd., Sponsored ADR (Taiwan)		91,744		1,936,708
Eutelsat Communications(a)		123,030		3,667,539
France Telecom SA		157,727		5,697,655

	Number of Shares		Market Value
Mobile Telesystems OJSC Sponsored ADR (Russia)		37,930	$	3,860,895
Singapore Telecommunications Ltd.		1,766,000		4,853,344
SK Telecom Co. Ltd. ADR (South Korea)(b)		55,680		1,661,491
Telefonica SA Sponsored ADR (Spain)		78,065		7,618,363
Telefonos de Mexico SA de CV Cl. L Sponsored ADR (Mexico)		62,603		2,306,294
Telekom Austria AG		156,560		4,367,312
Telenor ASA(a)		253,576		6,010,339
Vodafone Group PLC Sponsored ADR (United Kingdom)		147,973		5,522,352
				51,398,932
Transportation — 1.2%
Deutsche Post AG		129,321		4,449,096
TOTAL EQUITIES (Cost $294,493,242)				340,923,851
	Principal Amount
SHORT-TERM INVESTMENTS — 12.4%
Cash Equivalents — 4.5%(d)
Abbey National North America Eurodollar Time Deposit 5.000% 01/09/2008	$	382,163		382,163
Abbey National North America Eurodollar Time Deposit 5.160% 01/07/2008		382,163		382,163
ABN AMRO Bank NV CD 5.185% 01/04/2008		305,731		305,731
ABN AMRO Bank NV Eurodollar Time Deposit 5.145% 01/03/2008		229,298		229,298
ABN AMRO Bank NV Eurodollar Time Deposit 5.160% 01/04/2008		305,731		305,731
Bank of Nova Scotia Eurodollar Time Deposit 4.850% 01/22/2008		191,081		191,081
Bank of Nova Scotia Eurodollar Time Deposit 4.960% 01/17/2008		191,081		191,081
Bank of Nova Scotia Eurodollar Time Deposit 5.150% 01/03/2008		535,027		535,027

	Principal Amount		Market Value
Bank of Scotland Eurodollar Time Deposit 4.870% 02/11/2008	$	305,731	$	305,731
Bank of Scotland Eurodollar Time Deposit 5.150% 01/02/2008		229,297		229,297
Barclays Eurodollar Time Deposit 4.880% 02/06/2008		191,081		191,081
Barclays Eurodollar Time Deposit 5.000% 01/22/2008		229,297		229,297
Barclays Eurodollar Time Deposit 5.150% 02/12/2008		229,297		229,297
Barclays Eurodollar Time Deposit 5.350% 01/04/2008		229,297		229,297
BNP Paribas NY Branch Eurodollar Time Deposit 5.010% 01/16/2008		229,297		229,297
BNP Paribas NY Branch Eurodollar Time Deposit 5.150% 01/02/2008		305,730		305,730
BNP Paribas NY Branch Eurodollar Time Deposit 5.200% 01/11/2008		382,162		382,162
Calyon Eurodollar Time Deposit 4.250% 01/02/2008		1,624,190		1,624,190
Calyon Eurodollar Time Deposit 5.120% 03/03/2008		305,730		305,730
Dexia Credit Local Eurodollar Time Deposit 4.755% 01/03/2008		229,297		229,297
Dexia Credit Local Eurodollar Time Deposit 4.815% 01/04/2008		191,081		191,081
Fifth Third Bancorp Time Deposit 2.750% 01/02/2008		343,946		343,946
Fortis Bank Eurodollar Time Deposit 4.300% 01/02/2008		114,649		114,649
Fortis Bank Eurodollar Time Deposit 4.600% 01/07/2008		382,162		382,162
JP Morgan Chase & Co. Eurodollar Time Deposit 5.150% 02/12/2008		382,162		382,162
Lloyds TSB Bank PLC Eurodollar Time Deposit 4.750% 01/24/2008		382,162		382,162

(Continued)

The accompanying notes are an integral part of the financial statements.

118

MML Foreign Fund – Portfolio of Investments (Continued)

	Principal Amount		Market Value
Lloyds TSB Bank PLC Eurodollar Time Deposit 5.150% 01/03/2008	$	229,297	$	229,297
Rabobank USA Finance Corp. Eurodollar Time Deposit 4.880% 01/10/2008		229,297		229,297
Rabobank USA Finance Corp. Eurodollar Time Deposit 5.080% 01/09/2008		267,514		267,514
Reserve Primary Money Market Fund(c)		908,209		908,209
Royal Bank of Scotland Eurodollar Time Deposit 4.700% 02/25/2008		382,162		382,162
Royal Bank of Scotland Eurodollar Time Deposit 4.830% 02/05/2008		191,081		191,081
Royal Bank of Scotland Eurodollar Time Deposit 5.000% 01/22/2008		191,081		191,081
Societe Generale Eurodollar Time Deposit 4.900% 02/29/2008		305,730		305,730
Societe Generale Eurodollar Time Deposit 5.150% 01/02/2008		267,514		267,514
Societe Generale Eurodollar Time Deposit 5.150% 03/03/2008		267,514		267,514
Svenska Handelsbanken Eurodollar Time Deposit 4.250% 01/02/2008		2,250,313		2,250,313
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 4.800% 02/11/2008		382,162		382,162
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.050% 01/11/2008		152,865		152,865
Toronto Dominion Bank Ltd. Eurodollar Time Deposit 5.100% 01/10/2008		382,162		382,162
UBS Finance Delaware LLC Eurodollar Time Deposit 4.920% 01/11/2008		382,162		382,162

	Principal Amount		Market Value
Wells Fargo Eurodollar Time Deposit 4.600% 01/02/2008	$	191,081	$	191,081
Wells Fargo Eurodollar Time Deposit 4.750% 01/08/2008		267,514		267,514
				16,056,501
Repurchase Agreements — 7.9%
State Street Bank & Trust Co. Repurchase Agreement, dated 12/31/2007, 2.55%, due 01/02/2008(e)		28,334,853		28,334,853
TOTAL SHORT-TERM INVESTMENTS (Cost $44,391,354)				44,391,354
TOTAL INVESTMENTS — 107.3% (Cost $338,884,596)(f)				385,315,205
Other Assets/ (Liabilities) — (7.3%)				(26,296,985	)
NET ASSETS — 100.0%			$	359,018,220

Notes to Portfolio of Investments

ADR - American Depository Receipt

CHF - Swiss Franc

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. (Note 2).

(d) Represents investments of security lending collateral. (Note 2).

(e) Maturity value of $28,338,867. Collateralized by U.S. Government Agency obligations with rates ranging from 5.183% to 5.378%, maturity dates ranging from 01/01/2036 to 01/15/2036, and an aggregate market value, including accrued interest, of $28,905,389.

(f) See Note 6 for aggregate cost for Federal tax purposes.

The accompanying notes are an integral part of the financial statements.

119

MML Conservative Allocation Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
MUTUAL FUNDS — 100.0%
Financial Services
MML Blue Chip Growth Fund		1,329	$	15,781
MML Equity Fund		440		10,270
MML Equity Income Fund		978		10,533
MML Inflation-Protected Bond Fund		2,971		31,409
MML Managed Bond Fund		3,155		38,745
MML Mid Cap Growth Fund		419		4,682
MML Mid Cap Value Fund		309		2,838
MML Small Cap Equity Fund		485		4,371
Oppenheimer Global Securities Fund, Non-Service Shares		168		6,143
Oppenheimer International Fund, Non-Service Shares		2,941		6,265
Oppenheimer Strategic Bond Fund, Non-Service Shares		4,253		23,648
				154,685
TOTAL MUTUAL FUNDS (Cost $154,236)				154,685
TOTAL INVESTMENTS — 100.0% (Cost $154,236)(a)				154,685
Other Assets/ (Liabilities) — (0.0%)				(103	)
NET ASSETS — 100.0%			$	154,582

Notes to Portfolio of Investments

(a) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

120

MML Balanced Allocation Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
MUTUAL FUNDS — 100.0%
Financial Services
MML Blue Chip Growth Fund		1,197	$	14,203
MML Concentrated Growth Fund, Class I		848		9,405
MML Equity Fund		502		11,737
MML Equity Income Fund		1,257		13,542
MML Inflation-Protected Bond Fund		2,971		31,409
MML Managed Bond Fund		1,893		23,248
MML Mid Cap Growth Fund		419		4,682
MML Mid Cap Value Fund		464		4,257
MML Small Cap Equity Fund		485		4,370
Oppenheimer Global Securities Fund, Non-Service Shares		168		6,143
Oppenheimer International Fund, Non-Service Shares		3,676		7,831
Oppenheimer Strategic Bond Fund, Non-Service Shares		4,253		23,648
				154,475
TOTAL MUTUAL FUNDS (Cost $154,839)				154,475
TOTAL INVESTMENTS — 100.0% (Cost $154,839)(a)				154,475
Other Assets/ (Liabilities) — (0.0%)				(104	)
NET ASSETS — 100.0%			$	154,371

Notes to Portfolio of Investments

(a) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

121

MML Moderate Allocation Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
MUTUAL FUNDS — 100.0%
Financial Services
MML Blue Chip Growth Fund		1,329	$	15,781
MML Concentrated Growth Fund, Class I		989		10,972
MML Equity Fund		502		11,737
MML Equity Income Fund		1,397		15,047
MML Inflation-Protected Bond Fund		2,229		23,557
MML Managed Bond Fund		1,893		23,248
MML Mid Cap Growth Fund		419		4,682
MML Mid Cap Value Fund		618		5,677
MML Small Cap Equity Fund		485		4,370
MML Small Cap Growth Equity Fund		273		4,651
Oppenheimer Global Securities Fund, Non-Service Shares		210		7,678
Oppenheimer International Fund, Non-Service Shares		5,147		10,963
Oppenheimer Strategic Bond Fund, Non-Service Shares		2,836		15,766
				154,129
TOTAL MUTUAL FUNDS (Cost $155,178)				154,129
TOTAL INVESTMENTS — 100.0% (Cost $155,178)(a)				154,129
Other Assets/ (Liabilities) — (0.0%)				(104	)
NET ASSETS — 100.0%			$	154,025

Notes to Portfolio of Investments

(a) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

122

MML Growth Allocation Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
MUTUAL FUNDS — 100.0%
Financial Services
MML Blue Chip Growth Fund		1,728	$	20,515
MML Concentrated Growth Fund, Class I		1,272		14,107
MML Equity Fund		628		14,672
MML Equity Income Fund		1,677		18,056
MML Inflation-Protected Bond Fund		1,337		14,134
MML Managed Bond Fund		1,010		12,399
MML Mid Cap Growth Fund		558		6,243
MML Mid Cap Value Fund		618		5,676
MML Small Cap Equity Fund		646		5,827
MML Small Cap Growth Equity Fund		273		4,651
Oppenheimer Global Securities Fund, Non-Service Shares		252		9,214
Oppenheimer International Fund, Non-Service Shares		7,353		15,662
Oppenheimer Strategic Bond Fund, Non-Service Shares		2,268		12,613
				153,769
TOTAL MUTUAL FUNDS (Cost $155,602)				153,769
TOTAL INVESTMENTS — 100.0% (Cost $155,602)(a)				153,769
Other Assets/ (Liabilities) — (0.0%)				(105	)
NET ASSETS — 100.0%			$	153,664

Notes to Portfolio of Investments

(a) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

123

MML Aggressive Allocation Fund – Portfolio of Investments

December 31, 2007

	Number of Shares		Market Value
MUTUAL FUNDS — 100.0%
Financial Services
MML Blue Chip Growth Fund		1,861	$	22,094
MML Concentrated Growth Fund, Class I		1,413		15,674
MML Equity Fund		628		14,672
MML Equity Income Fund		1,677		18,056
MML Inflation-Protected Bond Fund		594		6,282
MML Managed Bond Fund		379		4,649
MML Mid Cap Growth Fund		838		9,365
MML Mid Cap Value Fund		773		7,096
MML Small Cap Equity Fund		808		7,284
MML Small Cap Growth Equity Fund		455		7,752
Oppenheimer Global Securities Fund, Non-Service Shares		378		13,821
Oppenheimer International Fund, Non-Service Shares		10,294		21,926
Oppenheimer Strategic Bond Fund, Non-Service Shares		851		4,730
				153,401
TOTAL MUTUAL FUNDS (Cost $155,894)				153,401
TOTAL INVESTMENTS — 100.0% (Cost $155,894)(a)				153,401
Other Assets/ (Liabilities) — (0.0%)				(105	)
NET ASSETS — 100.0%			$	153,296

Notes to Portfolio of Investments

(a) See Note 6 for aggregate cost for Federal tax purposes.

The remainder of this page is intentionally left blank.

The accompanying notes are an integral part of the financial statements.

124

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MML Series Investment Fund – Financial Statements

Statement of Assets and Liabilities

December 31, 2007

	MML Asset Allocation Fund			MML Equity Income Fund			MML Income & Growth Fund			MML Growth & Income Fund
Assets:
Investments, at value (Note 2)(a)	$	250,663,689		$	366,536,323		$	149,633,779		$	268,302,360
Short-term investments, at value (Note 2)(b)		16,811,565			30,221,695			12,220,409			21,154,727
Total investments(c)		267,475,254			396,758,018			161,854,188			289,457,087
Cash		9,626			13,177			-			11,697
Foreign currency, at value:(d)		17,875			-			-			-
Receivables from:
Investments sold		305,576			1,941,745			2,566,260			1,422,474
Open forward foreign currency contracts (Note 2)		3,105			-			-			-
Investment adviser (Note 3)		11,075			-			2,565			7,901
Fund shares sold		421,638			2,978,856			48,917			176,823
Interest and dividends		1,106,165			639,918			212,426			400,386
Foreign taxes withheld		3,115			7,378			-			6,407
Total assets		269,353,429			402,339,092			164,684,356			291,482,775
Liabilities:
Payables for:
Investments purchased		1,246,630			3,141,349			1,914,912			1,095,231
Open forward foreign currency contracts (Note 2)		1,507			-			-			-
Fund shares repurchased		69,222			36,940			126,634			99,556
Securities on loan (Note 2)		12,559,938			20,245,454			12,220,409			20,307,619
Trustees' fees and expenses (Note 3)		20,984			23,327			13,811			23,635
Affiliates (Note 3):
Investment management fees		120,317			237,071			83,924			116,487
Administration fees		-			-			-			-
Due to custodian		-			-			15,547			-
Accrued expense and other liabilities		40,647			39,108			36,869			37,520
Total liabilities		14,059,245			23,723,249			14,412,106			21,680,048
Net assets	$	255,294,184		$	378,615,843		$	150,272,250		$	269,802,727
Net assets consist of:
Paid-in capital	$	257,032,794		$	364,466,610		$	143,356,771		$	273,164,624
Undistributed net investment income (distributions in excess of net investment income)		44,174			(20,704	)		(1,403	)		(19,976	)
Accumulated net realized gain (loss) on investments		(726,740	)		5,531,377			(3,493,432	)		(957,116	)
Net unrealized appreciation (depreciation) on investments		(1,056,044	)		8,638,560			10,410,314			(2,384,805	)
Net assets	$	255,294,184		$	378,615,843		$	150,272,250		$	269,802,727
Shares outstanding		25,762,458			35,164,000			14,670,086			27,519,164
Net asset value, offering price and redemption price per share	$	9.91		$	10.77		$	10.24		$	9.80
Class I shares:
Net assets	$	-		$	-		$	-		$	-
Shares outstanding		-			-			-			-
Net asset value and redemption price per share	$	-		$	-		$	-		$	-
Class II shares:
Net assets	$	-		$	-		$	-		$	-
Shares outstanding		-			-			-			-
Net asset value, offering price and redemption price per share	$	-		$	-		$	-		$	-
(a) Cost of investments - unaffiliated issuers:	$	251,718,609		$	357,901,972		$	139,223,465		$	270,687,165
(b) Cost of short-term investments:	$	16,811,565		$	30,221,695		$	12,220,409		$	21,154,727
(c) Securities on loan with market value of:	$	11,974,797		$	19,265,352		$	11,709,813		$	19,388,223
(d) Cost of foreign currency:	$	28,123		$	-		$	-		$	-

The accompanying notes are an integral part of the financial statements.

126

	MML Blue Chip Growth Fund			MML Large Cap Growth Fund			MML Concentrated Growth Fund
Assets:
Investments, at value (Note 2)(a)	$	61,207,811		$	74,002,064		$	82,914,722
Short-term investments, at value (Note 2)(b)		3,720,469			5,687,927			7,437,823
Total investments(c)		64,928,280			79,689,991			90,352,545
Cash		1,675			1,086			5,630
Foreign currency, at value:(d)		-			-			-
Receivables from:
Investments sold		80,364			71,092			-
Open forward foreign currency contracts (Note 2)		-			-			-
Investment adviser (Note 3)		-			-			11,998
Fund shares sold		36,983			32,807			155,580
Interest and dividends		54,878			44,978			70,345
Foreign taxes withheld		2,987			1,011			-
Total assets		65,105,167			79,840,965			90,596,098
Liabilities:
Payables for:
Investments purchased		104,023			-			-
Open forward foreign currency contracts (Note 2)		-			-			-
Fund shares repurchased		5,981			14,654			19,792
Securities on loan (Note 2)		3,204,471			5,520,513			4,860,663
Trustees' fees and expenses (Note 3)		3,069			6,069			6,632
Affiliates (Note 3):
Investment management fees		39,227			41,389			43,866
Administration fees		13,199			-			12,230
Due to custodian		-			-			-
Accrued expense and other liabilities		33,795			33,189			37,560
Total liabilities		3,403,765			5,615,814			4,980,743
Net assets	$	61,701,402		$	74,225,151		$	85,615,355
Net assets consist of:
Paid-in capital	$	52,079,646		$	64,954,779		$	78,030,798
Undistributed net investment income (distributions in excess of net investment income)		(4,247	)		(5,173	)		(19,309	)
Accumulated net realized gain (loss) on investments		(364,063	)		(577,272	)		(2,670,898	)
Net unrealized appreciation (depreciation) on investments		9,990,066			9,852,817			10,274,764
Net assets	$	61,701,402		$	74,225,151		$	85,615,355
Shares outstanding		5,197,883			6,544,535			-
Net asset value, offering price and redemption price per share	$	11.87		$	11.34		$	-
Class I shares:
Net assets	$	-		$	-		$	23,929,671
Shares outstanding		-			-			2,156,973
Net asset value and redemption price per share	$	-		$	-		$	11.09
Class II shares:
Net assets	$	-		$	-		$	61,685,684
Shares outstanding		-			-			5,557,051
Net asset value, offering price and redemption price per share	$	-		$	-		$	11.10
(a) Cost of investments - unaffiliated issuers:	$	51,217,976		$	64,149,247		$	72,639,958
(b) Cost of short-term investments:	$	3,720,469		$	5,687,927		$	7,437,823
(c) Securities on loan with market value of:	$	3,093,978		$	5,340,526		$	4,682,002
(d) Cost of foreign currency:	$	-		$	-		$	-

127

MML Series Investment Fund – Financial Statements (Continued)

Statement of Assets and Liabilities

December 31, 2007

	MML Mid Cap Value Fund			MML Mid Cap Growth Fund			MML Small Cap Value Fund
Assets:
Investments, at value (Note 2)(a)	$	387,047,108		$	274,444,217		$	230,539,150
Short-term investments, at value (Note 2)(b)		55,164,826			71,169,190			50,797,966
Total investments(c)		442,211,934			345,613,407			281,337,116
Cash		8,733			17,982			25,037	*
Foreign currency, at value:(d)		5,502			19,066			-
Receivables from:
Investments sold		5,900,645			1,781,512			2,132,382
Open forward foreign currency contracts (Note 2)		23,185			-			-
Fund shares sold		11,319,773			56,845			12,376,212
Interest and dividends		710,845			123,055			531,880
Variation margin on open futures contracts (Note 2)		-			-			9,490
Foreign taxes withheld		-			-			-
Total assets		460,180,617			347,611,867			296,412,117
Liabilities:
Payables for:
Investments purchased		9,462,263			1,625,518			4,355,451
Open forward foreign currency contracts (Note 2)		19,753			-			-
Fund shares repurchased		66,802			175,106			21,761
Variation margin on open futures contracts (Note 2)		-			-			-
Securities on loan (Note 2)		45,349,521			59,860,059			43,244,140
Trustees' fees and expenses (Note 3)		28,328			22,741			15,989
Affiliates (Note 3):
Investment management fees		279,362			187,129			149,808
Administration fees		-			-			-
Accrued expense and other liabilities		46,205			39,967			41,883
Total liabilities		55,252,234			61,910,520			47,829,032
Net assets	$	404,928,383		$	285,701,347		$	248,583,085
Net assets consist of:
Paid-in capital	$	444,475,476		$	254,148,084		$	287,992,741
Undistributed net investment income (loss) (distributions in excess of net investment income)		144,558			(19,583	)		70,325
Accumulated net realized gain (loss) on investments		(19,678,654	)		4,235,827			(16,653,140	)
Net unrealized appreciation (depreciation) on investments		(20,012,997	)		27,337,019			(22,826,841	)
Net assets	$	404,928,383		$	285,701,347		$	248,583,085
Shares outstanding		44,129,826			25,554,763			29,426,627
Net asset value, offering price and redemption price per share	$	9.18		$	11.18		$	8.45
Class I shares:
Net assets	$	-		$	-		$	-
Shares outstanding		-			-			-
Net asset value and redemption price per share	$	-		$	-		$	-
Class II shares:
Net assets	$	-		$	-		$	-
Shares outstanding		-			-			-
Net asset value, offering price and redemption price per share	$	-		$	-		$	-
(a) Cost of investments - unaffiliated issuers:	$	407,062,023		$	247,107,613		$	253,375,411
(b) Cost of short-term investments:	$	55,164,826		$	71,169,190		$	50,797,966
(c) Securities on loan with market value of:	$	43,672,946		$	57,387,548		$	41,146,342
(d) Cost of foreign currency:	$	5,524		$	18,542		$	-

* Includes cash held as collateral for open futures contracts. (Note 2).

The accompanying notes are an integral part of the financial statements.

128

	MML Small Cap Index Fund			MML Global Fund			MML Foreign Fund
Assets:
Investments, at value (Note 2)(a)	$	58,384,141		$	51,339,344		$	340,923,851
Short-term investments, at value (Note 2)(b)		15,130,264			3,779,048			44,391,354
Total investments(c)		73,514,405			55,118,392			385,315,205
Cash		8,567			2,377			16,289
Foreign currency, at value:(d)		-			92,297			445,270
Receivables from:
Investments sold		272,825			241,297			1,860,519
Open forward foreign currency contracts (Note 2)		-			-			-
Fund shares sold		13,326			29,667			200,856
Interest and dividends		92,249			83,009			379,490
Variation margin on open futures contracts (Note 2)		-			-			-
Foreign taxes withheld		-			14,960			52,129
Total assets		73,901,372			55,581,999			388,269,758
Liabilities:
Payables for:
Investments purchased		370,870			210,133			7,191,725
Open forward foreign currency contracts (Note 2)		-			-			-
Fund shares repurchased		70,547			25,486			5,635,884
Variation margin on open futures contracts (Note 2)		770			-			-
Securities on loan (Note 2)		14,509,705			1,661,886			16,056,501
Trustees' fees and expenses (Note 3)		5,306			4,657			20,189
Affiliates (Note 3):
Investment management fees		17,734			31,283			270,344
Administration fees		-			9,066			-
Accrued expense and other liabilities		33,122			54,313			76,895
Total liabilities		15,008,054			1,996,824			29,251,538
Net assets	$	58,893,318		$	53,585,175		$	359,018,220
Net assets consist of:
Paid-in capital	$	61,271,500		$	51,578,710		$	313,837,631
Undistributed net investment income (loss) (distributions in excess of net investment income)		20,638			(3,966	)		(1,201,159	)
Accumulated net realized gain (loss) on investments		546,667			62,815			-
Net unrealized appreciation (depreciation) on investments		(2,945,487	)		1,947,616			46,381,748
Net assets	$	58,893,318		$	53,585,175		$	359,018,220
Shares outstanding		6,162,547			-			29,874,797
Net asset value, offering price and redemption price per share	$	9.56		$	-		$	12.02
Class I shares:
Net assets	$	-		$	10,155,827		$	-
Shares outstanding		-			985,149			-
Net asset value and redemption price per share	$	-		$	10.31		$	-
Class II shares:
Net assets	$	-		$	43,429,348		$	-
Shares outstanding		-			4,211,149			-
Net asset value, offering price and redemption price per share	$	-		$	10.31		$	-
(a) Cost of investments - unaffiliated issuers:	$	61,339,588		$	49,392,505		$	294,493,242
(b) Cost of short-term investments:	$	15,130,264		$	3,779,048		$	44,391,354
(c) Securities on loan with market value of:	$	13,795,929		$	1,593,628		$	15,134,397
(d) Cost of foreign currency:	$	-		$	90,021		$	447,261

129

MML Series Investment Fund – Financial Statements (Continued)

Statement of Assets and Liabilities

December 31, 2007

	MML Conservative Allocation Fund		MML Balanced Allocation Fund			MML Moderate Allocation Fund
Assets:
Investments, at value:
Affiliated issuers (Note 2) (a)	$	154,685	$	154,475		$	154,129
Total investments		154,685		154,475			154,129
Cash		21,134		21,134			21,133
Receivables from:
Investment adviser (Note 3)		8,069		8,075			8,078
Total assets		183,888		183,684			183,340
Liabilities:
Payables for:
Affiliates (Note 3):
Investment management fees		13		13			13
Accrued expense and other liabilities		29,293		29,300			29,302
Total liabilities		29,306		29,313			29,315
Net assets	$	154,582	$	154,371		$	154,025
Net assets consist of:
Paid-in capital	$	152,986	$	153,233		$	153,353
Undistributed net investment income (distributions in excess of net investment income)		1		-			-
Accumulated net realized gain (loss) on investments		1,146		1,502			1,721
Net unrealized appreciation (depreciation) on investments		449		(364	)		(1,049	)
Net assets	$	154,582	$	154,371		$	154,025
Shares outstanding		15,296		15,321			15,334
Net asset value, offering price and redemption price per share	$	10.11	$	10.08		$	10.04
(a) Cost of investments - affiliated issuers:	$	154,236	$	154,839		$	155,178

The accompanying notes are an integral part of the financial statements.

130

	MML Growth Allocation Fund			MML Aggressive Allocation Fund
Assets:
Investments, at value:
Affiliated issuers (Note 2) (a)	$	153,769		$	153,401
Total investments		153,769			153,401
Cash		21,132			21,132
Receivables from:
Investment adviser (Note 3)		8,084			8,089
Total assets		182,985			182,622
Liabilities:
Payables for:
Affiliates (Note 3):
Investment management fees		13			13
Accrued expense and other liabilities		29,308			29,313
Total liabilities		29,321			29,326
Net assets	$	153,664		$	153,296
Net assets consist of:
Paid-in capital	$	153,383		$	153,387
Undistributed net investment income (distributions in excess of net investment income)		-			-
Accumulated net realized gain (loss) on investments		2,114			2,402
Net unrealized appreciation (depreciation) on investments		(1,833	)		(2,493	)
Net assets	$	153,664		$	153,296
Shares outstanding		15,337			15,338
Net asset value, offering price and redemption price per share	$	10.02		$	9.99
(a) Cost of investments - affiliated issuers:	$	155,602		$	155,894

131

MML Series Investment Fund – Financial Statements (Continued)

Statement of Operations

For the Year Ended December 31, 2007

	MML Asset Allocation Fund			MML Equity Income Fund			MML Income & Growth Fund			MML Growth & Income Fund
Investment Income (Note 2):
Dividends(a)	$	2,934,263		$	7,789,516		$	3,634,339		$	4,656,568
Interest		4,858,036			680,345			9,507			152,723
Securities lending net income		80,289			83,643			75,868			108,471
Total investment income		7,872,588			8,553,504			3,719,714			4,917,762
Expenses (Note 3):
Investment management fees (Note 3)		1,486,898			2,525,841			1,110,885			1,492,717
Custody fees		41,762			34,291			29,934			30,865
Audit and legal fees		35,335			35,265			33,127			33,923
Proxy fees		1,529			967			969			1,529
Shareholder reporting fees		10,457			10,964			7,127			12,057
Trustees' fees (Note 3)		26,462			30,799			17,343			29,683
		1,602,443			2,638,127			1,199,385			1,600,774
Administration fees (Note 3):
Class I		-			-			-			-
Class II		-			-			-			-
Total expenses		1,602,443			2,638,127			1,199,385			1,600,774
Expenses waived (Note 3)		(61,475	)		-			(3,046	)		(48,349	)
Net expenses		1,540,968			2,638,127			1,196,339			1,552,425
Net investment income (loss)		6,331,620			5,915,377			2,523,375			3,365,337
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Investment transactions		5,341,481			16,586,981			5,053,719			9,569,944
Foreign currency transactions		(29,472	)		(8,261	)		-			20
Net realized gain (loss)		5,312,009			16,578,720			5,053,719			9,569,964
Net change in unrealized appreciation (depreciation) on:
Investments		(8,081,610	)		(14,649,033	)		(7,601,044	)		(12,124,354	)
Translation of assets and liabilities in foreign currencies		(547	)		4,036			-			-
Net unrealized appreciation (depreciation)		(8,082,157	)		(14,644,997	)		(7,601,044	)		(12,124,354	)
Net realized gain (loss) and change in unrealized appreciation (depreciation)		(2,770,148	)		1,933,723			(2,547,325	)		(2,554,390	)
Net increase (decrease) in net assets resulting from operations	$	3,561,472		$	7,849,100		$	(23,950	)	$	810,947
(a) Net of withholding tax of:	$	35,284		$	30,808		$	25,433		$	54,463

The accompanying notes are an integral part of the financial statements.

132

	MML Blue Chip Growth Fund			MML Large Cap Growth Fund		MML Concentrated Growth Fund
Investment Income (Note 2):
Dividends(a)	$	709,674		$	605,374	$	661,477
Interest		12,062			9,917		54,864
Securities lending net income		10,637			31,335		62,947
Total investment income		732,373			646,626		779,288
Expenses (Note 3):
Investment management fees (Note 3)		441,367			498,445		507,671
Custody fees		15,933			11,140		17,074
Audit and legal fees		32,107			31,559		32,218
Proxy fees		967			915		967
Shareholder reporting fees		2,159			3,205		3,490
Trustees' fees (Note 3)		4,311			7,630		8,188
		496,844			552,894		569,608
Administration fees (Note 3):
Class I		-			-		48,404
Class II		-			-		90,221
Total expenses		496,844			552,894		708,233
Expenses waived (Note 3)		-			-		(129,627	)
Net expenses		496,844			552,894		578,606
Net investment income (loss)		235,529			93,732		200,682
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Investment transactions		541,240			2,704,088		2,593,500
Foreign currency transactions		(3,588	)		-		(13,641	)
Net realized gain (loss)		537,652			2,704,088		2,579,859
Net change in unrealized appreciation (depreciation) on:
Investments		6,094,225			7,006,576		8,858,476
Translation of assets and liabilities in foreign currencies		244			-		-
Net unrealized appreciation (depreciation)		6,094,469			7,006,576		8,858,476
Net realized gain (loss) and change in unrealized appreciation (depreciation)		6,632,121			9,710,664		11,438,335
Net increase (decrease) in net assets resulting from operations	$	6,867,650		$	9,804,396	$	11,639,017
(a) Net of withholding tax of:	$	8,488		$	9,768	$	16,801

133

MML Series Investment Fund – Financial Statements (Continued)

Statement of Operations

For the Year Ended December 31, 2007

	MML Mid Cap Value Fund			MML Mid Cap Growth Fund		MML Small Cap Value Fund
Investment Income (Note 2):
Dividends(a)	$	8,140,162		$	2,103,393	$	3,876,791
Interest		344,522			300,712		198,160
Securities lending net income		112,658			183,657		238,276
Total investment income		8,597,342			2,587,762		4,313,227
Expenses (Note 3):
Investment management fees (Note 3)		3,258,390			2,252,006		1,675,594
Custody fees		77,819			39,394		35,855
Audit and legal fees		36,141			34,243		33,720
Proxy fees		967			967		967
Shareholder reporting fees		13,759			12,027		7,545
Trustees' fees (Note 3)		36,586			28,417		21,307
		3,423,662			2,367,054		1,774,988
Administration fees (Note 3):
Class I		-			-		-
Class II		-			-		-
Total expenses		3,423,662			2,367,054		1,774,988
Expenses waived (Note 3)		-			-		-
Net expenses		3,423,662			2,367,054		1,774,988
Net investment income (loss)		5,173,680			220,708		2,538,239
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Investment transactions		22,762,275			20,531,634		(7,218,464	)
Futures contracts		-			-		(536,075	)
Foreign currency transactions		(597,072	)		1,118		-
Net realized gain (loss)		22,165,203			20,532,752		(7,754,539	)
Net change in unrealized appreciation (depreciation) on:
Investments		(38,886,720	)		24,970,627		(41,896,972	)
Futures contracts		-			-		17,740
Translation of assets and liabilities in foreign currencies		155,850			471		-
Net unrealized appreciation (depreciation)		(38,730,870	)		24,971,098		(41,879,232	)
Net realized gain (loss) and change in unrealized appreciation (depreciation)		(16,565,667	)		45,503,850		(49,633,771	)
Net increase (decrease) in net assets resulting from operations	$	(11,391,987	)	$	45,724,558	$	(47,095,532	)
(a) Net of withholding tax of:	$	17,146		$	6,353	$	572

The accompanying notes are an integral part of the financial statements.

134

	MML Small Cap Index Fund			MML Global Fund			MML Foreign Fund
Investment Income (Note 2):
Dividends(a)	$	761,687		$	1,198,626		$	8,313,299
Interest		35,153			32,804			593,167
Securities lending net income		87,113			18,564			201,351
Total investment income		883,953			1,249,994			9,107,817
Expenses (Note 3):
Investment management fees (Note 3)		232,101			353,431			2,702,452
Custody fees		14,560			116,113			252,791
Audit and legal fees		31,478			36,022			39,620
Proxy fees		967			967			967
Shareholder reporting fees		2,796			2,463			9,436
Trustees' fees (Note 3)		6,670			5,860			26,818
		288,572			514,856			3,032,084
Administration fees (Note 3):
Class I		-			28,390			-
Class II		-			87,779			-
Total expenses		288,572			631,025			3,032,084
Expenses waived (Note 3)		-			(261,563	)		-
Net expenses		288,572			369,462			3,032,084
Net investment income (loss)		595,381			880,532			6,075,733
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Investment transactions		2,997,806			2,932,418			6,414,818
Futures contracts		(59,545	)		-			-
Foreign currency transactions		-			(64,417	)		(227,656	)
Net realized gain (loss)		2,938,261			2,868,001			6,187,162
Net change in unrealized appreciation (depreciation) on:
Investments		(3,459,151	)		(1,420,572	)		24,140,898
Futures contracts		13,854			-			-
Translation of assets and liabilities in foreign currencies		-			211			(48,174	)
Net unrealized appreciation (depreciation)		(3,445,297	)		(1,420,361	)		24,092,724
Net realized gain (loss) and change in unrealized appreciation (depreciation)		(507,036	)		1,447,640			30,279,886
Net increase (decrease) in net assets resulting from operations	$	88,345		$	2,328,172		$	36,355,619
(a) Net of withholding tax of:	$	10		$	50,555		$	658,159

135

MML Series Investment Fund – Financial Statements (Continued)

Statement of Operations

For the Year Ended December 31, 2007

	MML Conservative Allocation Fund*			MML Balanced Allocation Fund*			MML Moderate Allocation Fund*
Investment Income (Note 2):
Dividends from affiliated issuers	$	2,079		$	1,783		$	1,693
Total investment income		2,079			1,783			1,693
Expenses (Note 3):
Investment management fees (Note 3)		52			52			52
Custody fees		49			50			50
Audit and legal fees		30,705			30,704			30,705
Shareholder reporting fees		1,295			1,301			1,303
Trustees' fees (Note 3)		1			1			1
Total expenses		32,102			32,108			32,111
Expenses waived (Note 3)		(31,999	)		(32,004	)		(32,006	)
Net expenses		103			104			105
Net investment income (loss)		1,976			1,679			1,588
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Realized gain distributions from affiliated issuers (Note 7)		2,157			3,056			3,486
Net realized gain (loss)		2,157			3,056			3,486
Net change in unrealized appreciation (depreciation) on:
Investments		449			(364	)		(1,049	)
Net unrealized appreciation (depreciation)		449			(364	)		(1,049	)
Net realized gain (loss) and change in unrealized appreciation (depreciation)		2,606			2,692			2,437
Net increase (decrease) in net assets resulting from operations	$	4,582		$	4,371		$	4,025

* Fund commenced operations on August 31, 2007.

The accompanying notes are an integral part of the financial statements.

136

	MML Growth Allocation Fund*			MML Aggressive Allocation Fund*
Investment Income (Note 2):
Dividends from affiliated issuers	$	1,380		$	1,077
Total investment income		1,380			1,077
Expenses (Note 3):
Investment management fees (Note 3)		52			52
Custody fees		50			50
Audit and legal fees		30,705			30,705
Shareholder reporting fees		1,309			1,314
Trustees' fees (Note 3)		1			1
Total expenses		32,117			32,122
Expenses waived (Note 3)		(32,012	)		(32,017	)
Net expenses		105			105
Net investment income (loss)		1,275			972
Realized and unrealized gain (loss):
Net realized gain (loss) on:
Realized gain distributions from affiliated issuers (Note 7)		4,222			4,817
Net realized gain (loss)		4,222			4,817
Net change in unrealized appreciation (depreciation) on:
Investments		(1,833	)		(2,493	)
Net unrealized appreciation (depreciation)		(1,833	)		(2,493	)
Net realized gain (loss) and change in unrealized appreciation (depreciation)		2,389			2,324
Net increase (decrease) in net assets resulting from operations	$	3,664		$	3,296

137

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML Asset Allocation Fund						MML Equity Income Fund
	Year ended			Period ended			Year ended			Period ended
	December 31, 2007			December 31, 2006*			December 31, 2007			December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	6,331,620		$	4,089,604		$	5,915,377		$	2,743,473
Net realized gain (loss) on investment transactions		5,312,009			802,656			16,578,720			1,808,445
Net change in unrealized appreciation (depreciation) on investments		(8,082,157	)		7,026,113			(14,644,997	)		23,283,557
Net increase (decrease) in net assets resulting from operations		3,561,472			11,918,373			7,849,100			27,835,475
Distributions to shareholders (Note 2):
From net investment income		(6,356,734	)		(4,139,877	)		(5,925,721	)		(2,641,992	)
Total distributions from net investment income		(6,356,734	)		(4,139,877	)		(5,925,721	)		(2,641,992	)
From net realized gains		(6,419,732	)		(302,112	)		(12,156,321	)		(811,309	)
Total distributions from net realized gains		(6,419,732	)		(302,112	)		(12,156,321	)		(811,309	)
Tax return of capital		-			-			-			-
Total tax return of capital		-			-			-			-
Net fund share transactions (Note 5)		(1,703,229	)		258,736,023			96,491,751			267,974,860
Class I		-			-			-			-
Class II		-			-			-			-
Increase (decrease) in net assets from fund share transactions		(1,703,229	)		258,736,023			96,491,751			267,974,860
Total increase (decrease) in net assets		(10,918,223	)		266,212,407			86,258,809			292,357,034
Net assets:
Beginning of year		266,212,407			-			292,357,034			-
End of year	$	255,294,184		$	266,212,407		$	378,615,843		$	292,357,034
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	44,174		$	(12,127	)	$	(20,704	)	$	(6,722	)

* Fund commenced operations on May 1, 2006.

The accompanying notes are an integral part of the financial statements.

138

	MML Income & Growth Fund						MML Growth & Income Fund
	Year ended			Period ended			Year ended			Period ended
	December 31, 2007			December 31, 2006*			December 31, 2007			December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	2,523,375		$	2,163,025		$	3,365,337		$	2,188,839
Net realized gain (loss) on investment transactions		5,053,719			(1,010,580	)		9,569,964			459,272
Net change in unrealized appreciation (depreciation) on investments		(7,601,044	)		18,011,358			(12,124,354	)		9,739,549
Net increase (decrease) in net assets resulting from operations		(23,950	)		19,163,803			810,947			12,387,660
Distributions to shareholders (Note 2):
From net investment income		(2,509,147	)		(2,125,212	)		(3,372,953	)		(2,200,151	)
Total distributions from net investment income		(2,509,147	)		(2,125,212	)		(3,372,953	)		(2,200,151	)
From net realized gains		(7,574,681	)		-			(10,987,401	)		-
Total distributions from net realized gains		(7,574,681	)		-			(10,987,401	)		-
Tax return of capital		(5,314	)		(89,214	)		(9,050	)		-
Total tax return of capital		(5,314	)		(89,214	)		(9,050	)		-
Net fund share transactions (Note 5)		(20,418,664	)		163,854,629			(19,279,364	)		292,453,039
Class I		-			-			-			-
Class II		-			-			-			-
Increase (decrease) in net assets from fund share transactions		(20,418,664	)		163,854,629			(19,279,364	)		292,453,039
Total increase (decrease) in net assets		(30,531,756	)		180,804,006			(32,837,821	)		302,640,548
Net assets:
Beginning of year		180,804,006			-			302,640,548			-
End of year	$	150,272,250		$	180,804,006		$	269,802,727		$	302,640,548
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	(1,403	)	$	12,596		$	(19,976	)	$	(4,075	)

139

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML Blue Chip Growth Fund						MML Large Cap Growth Fund
	Year ended December 31, 2007			Period ended December 31, 2006*			Year ended December 31, 2007			Period ended December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	235,529		$	124,688		$	93,732		$	79,707
Net realized gain (loss) on investment transactions		537,652			(907,931	)		2,704,088			(3,281,360	)
Net change in unrealized appreciation (depreciation) on investments		6,094,469			3,895,597			7,006,576			2,846,241
Net increase (decrease) in net assets resulting from operations		6,867,650			3,112,354			9,804,396			(355,412	)
Distributions to shareholders (Note 2):
From net investment income		(234,912	)		(123,335	)		(112,565	)		(80,325	)
Class I		-			-			-			-
Class II		-			-			-			-
Total distributions from net investment income		(234,912	)		(123,335	)		(112,565	)		(80,325	)
From net realized gains		-			-			-			-
Class I		-			-			-			-
Class II		-			-			-			-
Total distributions from net realized gains		-			-			-			-
Tax return of capital		(20,962	)		(2,984	)		-			-
Class I		-			-			-			-
Class II		-			-			-			-
Total tax return of capital		(20,962	)		(2,984	)		-			-
Net fund share transactions (Note 5)		343,588			51,760,003			(13,358,560	)		78,327,617
Class I		-			-			-			-
Class II		-			-			-			-
Increase (decrease) in net assets from fund share transactions		343,588			51,760,003			(13,358,560	)		78,327,617
Total increase (decrease) in net assets		6,955,364			54,746,038			(3,666,729	)		77,891,880
Net assets:
Beginning of year		54,746,038			-			77,891,880			-
End of year	$	61,701,402		$	54,746,038		$	74,225,151		$	77,891,880
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	(4,247	)	$	(1,276	)	$	(5,173	)	$	(618	)

* Fund commenced operations on May 1, 2006.

The accompanying notes are an integral part of the financial statements.

140

	MML Concentrated Growth Fund						MML Mid Cap Value Fund
	Year ended December 31, 2007			Period ended December 31, 2006*			Year ended December 31, 2007			Period ended December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	200,682		$	105,706		$	5,173,680		$	3,088,987
Net realized gain (loss) on investment transactions		2,579,859			(504,668	)		22,165,203			13,933,082
Net change in unrealized appreciation (depreciation) on investments		8,858,476			1,416,288			(38,730,870	)		18,717,873
Net increase (decrease) in net assets resulting from operations		11,639,017			1,017,326			(11,391,987	)		35,739,942
Distributions to shareholders (Note 2):
From net investment income		-			-			(4,364,411	)		(3,072,499	)
Class I		(49,169	)		(15,355	)		-			-
Class II		(165,443	)		(92,441	)		-			-
Total distributions from net investment income		(214,612	)		(107,796	)		(4,364,411	)		(3,072,499	)
From net realized gains		-			-			(49,367,026	)		(7,091,111	)
Class I		(1,287,876	)		-			-			-
Class II		(3,471,858	)		-			-			-
Total distributions from net realized gains		(4,759,734	)		-			(49,367,026	)		(7,091,111	)
Tax return of capital		-			-			-			-
Class I		-			(997	)		-			-
Class II		-			(6,001	)		-			-
Total tax return of capital		-			(6,998	)		-			-
Net fund share transactions (Note 5)		-			-			111,145,799			333,329,676
Class I		4,664,293			17,795,274			-			-
Class II		(8,447,474	)		64,036,059			-			-
Increase (decrease) in net assets from fund share transactions		(3,783,181	)		81,831,333			111,145,799			333,329,676
Total increase (decrease) in net assets		2,881,490			82,733,865			46,022,375			358,906,008
Net assets:
Beginning of year		82,733,865			-			358,906,008			-
End of year	$	85,615,355		$	82,733,865		$	404,928,383		$	358,906,008
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	(19,309	)	$	(2,090	)	$	144,558		$	(3,285	)

141

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML Mid Cap Growth Fund						MML Small Cap Value Fund
	Year ended December 31, 2007			Period ended December 31, 2006*			Year ended December 31, 2007			Period ended December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	220,708		$	(214,782	)	$	2,538,239		$	1,474,802
Net realized gain (loss) on investment transactions		20,532,752			(2,398,681	)		(7,754,539	)		(9,213,568	)
Net change in unrealized appreciation (depreciation) on investments		24,971,098			2,365,921			(41,879,232	)		19,052,391
Net increase (decrease) in net assets resulting from operations		45,724,558			(247,542	)		(47,095,532	)		11,313,625
Distributions to shareholders (Note 2):
From net investment income		(239,326	)		-			(2,320,011	)		(1,371,509	)
Class I		-			-			-			-
Class II		-			-			-			-
Total distributions from net investment income		(239,326	)		-			(2,320,011	)		(1,371,509	)
From net realized gains		(13,887,916	)		-			-			-
Class I		-			-			-			-
Class II		-			-			-			-
Total distributions from net realized gains		(13,887,916	)		-			-			-
Tax return of capital		-			-			(48,275	)		(22,007	)
Total tax return of capital		-			-			(48,275	)		(22,007	)
Net fund share transactions (Note 5)		(31,044,485	)		285,396,058			90,807,973			197,318,821
Class I		-			-			-			-
Class II		-			-			-			-
Increase (decrease) in net assets from fund share transactions		(31,044,485	)		285,396,058			90,807,973			197,318,821
Total increase (decrease) in net assets		552,831			285,148,516			41,344,155			207,238,930
Net assets:
Beginning of year		285,148,516			-			207,238,930			-
End of year	$	285,701,347		$	285,148,516		$	248,583,085		$	207,238,930
Undistributed net investment income (loss) (distributions in excess of net investment income) included in net assets at the end of the year	$	(19,583	)	$	(12,799	)	$	70,325		$	26,354

* Fund commenced operations on May 1, 2006.

The accompanying notes are an integral part of the financial statements.

142

	MML Small Cap Index Fund						MML Global Fund
	Year ended December 31, 2007			Period ended December 31, 2006*			Year ended December 31, 2007			Period ended December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	595,381		$	273,916		$	880,532		$	629,048
Net realized gain (loss) on investment transactions		2,938,261			(12,969	)		2,868,001			(704,452	)
Net change in unrealized appreciation (depreciation) on investments		(3,445,297	)		499,810			(1,420,361	)		3,367,977
Net increase (decrease) in net assets resulting from operations		88,345			760,757			2,328,172			3,292,573
Distributions to shareholders (Note 2):
From net investment income		(523,610	)		(277,452	)		-			-
Class I		-			-			(153,417	)		(96,142	)
Class II		-			-			(698,665	)		(539,189	)
Total distributions from net investment income		(523,610	)		(277,452	)		(852,082	)		(635,331	)
From net realized gains		(2,426,222	)		-			-			-
Class I		-			-			(396,384	)		-
Class II		-			-			(1,736,166	)		-
Total distributions from net realized gains		(2,426,222	)		-			(2,132,550	)		-
Tax return of capital		-			-			-			-
Total tax return of capital		-			-			-			-
Net fund share transactions (Note 5)		(7,027,997	)		68,299,497			-			-
Class I		-			-			662,959			9,212,901
Class II		-			-			(7,923,075	)		49,631,608
Increase (decrease) in net assets from fund share transactions		(7,027,997	)		68,299,497			(7,260,116	)		58,844,509
Total increase (decrease) in net assets		(9,889,484	)		68,782,802			(7,916,576	)		61,501,751
Net assets:
Beginning of year		68,782,802			-			61,501,751			-
End of year	$	58,893,318		$	68,782,802		$	53,585,175		$	61,501,751
Undistributed net investment income (loss) (distributions in excess of net investment income) included in net assets at the end of the year	$	20,638		$	17,434		$	(3,966	)	$	(6,590	)

143

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML Foreign Fund
	Year ended December 31, 2007			Period ended December 31, 2006*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	6,075,733		$	2,619,083
Net realized gain (loss) on investment transactions		6,187,162			34,952
Net change in unrealized appreciation (depreciation) on investments		24,092,724			22,289,024
Net increase (decrease) in net assets resulting from operations		36,355,619			24,943,059
Distributions to shareholders (Note 2):
From net investment income		(7,983,780	)		(2,630,744	)
Total distributions from net investment income		(7,983,780	)		(2,630,744	)
From net realized gains		(5,335,758	)		(167,807	)
Class I		-			-
Class II		-			-
Total distributions from net realized gains		(5,335,758	)		(167,807	)
Tax return of capital		-			(82,071	)
Total tax return of capital		-			(82,071	)
Net fund share transactions (Note 5)		82,470,020			231,449,682
Class I		-			-
Class II		-			-
Increase (decrease) in net assets from fund share transactions		82,470,020			231,449,682
Total increase (decrease) in net assets		105,506,101			253,512,119
Net assets:
Beginning of year		253,512,119			-
End of year	$	359,018,220		$	253,512,119
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	(1,201,159	)	$	(144,516	)

* Fund commenced operations on May 1, 2006.

** Fund commenced operations on August 31, 2007.

The accompanying notes are an integral part of the financial statements.

144

	MML Conservative Allocation Fund			MML Balanced Allocation Fund
	Period ended December 31, 2007**			Period ended December 31, 2007**
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	1,976		$	1,679
Net realized gain (loss) on investment transactions		2,157			3,056
Net change in unrealized appreciation (depreciation) on investments		449			(364	)
Net increase (decrease) in net assets resulting from operations		4,582			4,371
Distributions to shareholders (Note 2):
From net investment income		(2,986	)		(3,233	)
Total distributions from net investment income		(2,986	)		(3,233	)
From net realized gains		-			-
Class I		-			-
Class II		-			-
Total distributions from net realized gains		-			-
Tax return of capital		-			-
Total tax return of capital		-			-
Net fund share transactions (Note 5)		152,986			153,233
Class I		-			-
Class II		-			-
Increase (decrease) in net assets from fund share transactions		152,986			153,233
Total increase (decrease) in net assets		154,582			154,371
Net assets:
Beginning of year		-			-
End of year	$	154,582		$	154,371
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	1		$	-

145

MML Series Investment Fund – Financial Statements (Continued)

Statement of Changes in Net Assets

	MML Moderate Allocation Fund
	Period ended December 31, 2007*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	1,588
Net realized gain (loss) on investment transactions		3,486
Net change in unrealized appreciation (depreciation) on investments		(1,049	)
Net increase (decrease) in net assets resulting from operations		4,025
Distributions to shareholders (Note 2):
From net investment income		(3,353	)
Total distributions from net investment income		(3,353	)
Net fund share transactions (Note 5)		153,353
Increase (decrease) in net assets from fund share transactions		153,353
Total increase (decrease) in net assets		154,025
Net assets:
End of year	$	154,025
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	-

* Fund commenced operations on August 31, 2007.

The accompanying notes are an integral part of the financial statements.

146

	MML Growth Allocation Fund			MML Aggressive Allocation Fund
	Period ended December 31, 2007*			Period ended December 31, 2007*
Increase (Decrease) in Net Assets:
Operations:
Net investment income (loss)	$	1,275		$	972
Net realized gain (loss) on investment transactions		4,222			4,817
Net change in unrealized appreciation (depreciation) on investments		(1,833	)		(2,493	)
Net increase (decrease) in net assets resulting from operations		3,664			3,296
Distributions to shareholders (Note 2):
From net investment income		(3,383	)		(3,387	)
Total distributions from net investment income		(3,383	)		(3,387	)
Net fund share transactions (Note 5)		153,383			153,387
Increase (decrease) in net assets from fund share transactions		153,383			153,387
Total increase (decrease) in net assets		153,664			153,296
Net assets:
End of year	$	153,664		$	153,296
Undistributed net investment income (distributions in excess of net investment income) included in net assets at the end of the year	$	-		$	-

147

MML Series Investment Fund – Financial Highlights
(For a share outstanding through each period)

MML Asset Allocation Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of the period	$	10.30		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.25	***		0.16	***
Net realized and unrealized gain (loss) on investments		(0.13	)		0.31
Total income from investment operations		0.12			0.47
Less distributions to shareholders:
From net investment income		(0.25	)		(0.16	)
From net realized gains		(0.26	)		(0.01	)
Total distributions		(0.51	)		(0.17	)
Net asset value, end of the period	$	9.91		$	10.30
Total Return(a)		1.14	%		4.74	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	255,294		$	266,212
Ratio of expenses to average daily net assets:
Before expense waiver		0.59	%		0.61	% *
After expense waiver		0.57	% #		0.57	% *#
Net investment income (loss) to average daily net assets		2.34	%		2.40	% *
Portfolio turnover rate		62	%		38	% **

MML Equity Income Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.97		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.20	***		0.11	***
Net realized and unrealized gain (loss) on investments		0.15			0.99
Total income from investment operations		0.35			1.10
Less distributions to shareholders:
From net investment income		(0.17	)		(0.10	)
From net realized gains		(0.38	)		(0.03	)
Total distributions		(0.55	)		(0.13	)
Net asset value, end of period	$	10.77		$	10.97
Total Return(a)		3.13	%		11.01	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	378,616		$	292,357
Net expenses to average daily net assets		0.78	%		0.80	% *
Net investment income (loss) to average daily net assets		1.76	%		1.66	% *
Portfolio turnover rate		27	%		12	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

148

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Income & Growth Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	11.03		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.17	***		0.13	***
Net realized and unrealized gain (loss) on investments		(0.24	)		1.04
Total income (loss) from investment operations		(0.07	)		1.17
Less distributions to shareholders:
From net investment income		(0.17	)		(0.14	)
From net realized gains		(0.55	)		-
Tax return of capital		(0.00	)†		-
Total distributions		(0.72	)		(0.14	)
Net asset value, end of period	$	10.24		$	11.03
Total Return(a)		(0.77	)%		11.66	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	150,272		$	180,804
Ratio of expenses to average daily net assets:
Before expense waiver		0.70	%		0.72	% *
After expense waiver		N/A ##			0.70	% *#
Net investment income (loss) to average daily net assets		1.48	%		1.84	% *
Portfolio turnover rate		57	%		38	% **

MML Growth & Income Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.36		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.12	***		0.07	***
Net realized and unrealized gain (loss) on investments		(0.14	)		0.37
Total income (loss) from investment operations		(0.02	)		0.44
Less distributions to shareholders:
From net investment income		(0.12	)		(0.08	)
From net realized gains		(0.42	)		-
Tax return of capital		(0.00	)†		-
Total distributions		(0.54	)		(0.08	)
Net asset value, end of period	$	9.80		$	10.36
Total Return(a)		(0.33	)%		4.35	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	269,803		$	302,641
Ratio of expenses to average daily net assets:
Before expense waiver		0.54	%		0.55	% *
After expense waiver		0.52	% #		0.52	% *#
Net investment income (loss) to average daily net assets		1.13	%		1.11	% *
Portfolio turnover rate		38	%		22	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

## Amount waived had no impact on the ratio of expenses to average daily net assets.

The accompanying notes are an integral part of the financial statements.

149

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Blue Chip Growth Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.58		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.05	***		0.02	***
Net realized and unrealized gain (loss) on investments		1.29			0.58
Total income from investment operations		1.34			0.60
Less distributions to shareholders:
From net investment income		(0.05	)		(0.02	)
Tax return of capital		(0.00	)†		-
Net asset value, end of period	$	11.87		$	10.58
Total Return(a)		12.67	%		6.04	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	61,701		$	54,746
Ratio of expenses to average daily net assets:
Before expense waiver		0.84	%		0.90	% *
After expense waiver		N/A			0.85	% *#
Net investment income (loss) to average daily net assets		0.40	%		0.37	% *
Portfolio turnover rate		35	%		24	% **

MML Large Cap Growth Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.00		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.01	***		0.01	***
Net realized and unrealized gain (loss) on investments		1.35			(0.00	)†
Total income from investment operations		1.36			0.01
Less distributions to shareholders:
From net investment income		(0.02	)		(0.01	)
Net asset value, end of period	$	11.34		$	10.00
Total Return(a)		13.57	%		0.10	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	74,225		$	77,892
Ratio of expenses to average daily net assets:
Before expense waiver		0.72	%		0.76	% *
After expense waiver		N/A			0.73	% *#
Net investment income (loss) to average daily net assets		0.12	%		0.15	% *
Portfolio turnover rate		85	%		61	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

150

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Concentrated Growth Fund

	Class I						Class II
	Year ended 12/31/07			Period ended 12/31/06+			Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.21		$	10.00		$	10.21		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.02	***		0.01	***		0.03	***		0.01	***
Net realized and unrealized gain (loss) on investments		1.54			0.21			1.55			0.22
Total income from investment operations		1.56			0.22			1.58			0.23
Less distributions to shareholders:
From net investment income		(0.02	)		-			(0.03	)		-
From net realized gains		(0.66	)		(0.01	)		(0.66	)		(0.02	)
Total distributions		(0.68	)		(0.01	)		(0.69	)		(0.02	)
Net asset value, end of period	$	11.09		$	10.21		$	11.10		$	10.21
Total Return(a)		15.04	%		2.19	% **		15.20	%		2.25	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	23,930		$	18,032		$	61,686		$	64,702
Ratio of expenses to average daily net assets:
Before expense waiver		0.91	%		0.94	% *		0.81	%		0.84	% *
After expense waiver		0.76	% #		0.76	% *#		0.66	% #		0.66	% *#
Net investment income (loss) to average daily net assets		0.16	%		0.11	% *		0.26	%		0.21	% *
Portfolio turnover rate		59	%		43	% **		59	%		43	% **

MML Mid Cap Value Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.81		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.15	***		0.10	***
Net realized and unrealized gain (loss) on investments		(0.35	)		1.03
Total income (loss) from investment operations		(0.20	)		1.13
Less distributions to shareholders:
From net investment income		(0.10	)		(0.10	)
From net realized gains		(1.33	)		(0.22	)
Total distributions		(1.43	)		(0.32	)
Net asset value, end of period	$	9.18		$	10.81
Total Return(a)		(2.32	)%		11.23	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	404,928		$	358,906
Net expenses to average daily net assets		0.88	%		0.90	% *
Net investment income (loss) to average daily net assets		1.33	%		1.44	% *
Portfolio turnover rate		206	%		173	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

151

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Mid Cap Growth Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.04		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.01	***		(0.01	)***
Net realized and unrealized gain (loss) on investments		1.71			0.05
Total income from investment operations		1.72			0.04
Less distributions to shareholders:
From net investment income		(0.01	)		-
From net realized gains		(0.57	)		-
Total distributions		(0.58	)		-
Net asset value, end of period	$	11.18		$	10.04
Total Return(a)		16.89	%		0.50	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	285,701		$	285,149
Net expenses to average daily net assets		0.81	%		0.83	% *
Net investment income (loss) to average daily net assets		0.08	%		(0.11	)% *
Portfolio turnover rate		31	%		30	% **

MML Small Cap Value Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.45		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.11	***		0.08	***
Net realized and unrealized gain (loss) on investments		(2.02	)		0.44
Total income (loss) from investment operations		(1.91	)		0.52
Less distributions to shareholders:
From net investment income		(0.09	)		(0.07	)
Tax return of capital		(0.00	)†		-
Net asset value, end of period	$	8.45		$	10.45
Total Return(a)		(18.31	)%		5.20	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	248,583		$	207,239
Net expenses to average daily net assets		0.79	%		0.83	% *
Net investment income (loss) to average daily net assets		1.14	%		1.29	% *
Portfolio turnover rate		152	%		173	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

† Amount is less than $0.005 per share.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

The accompanying notes are an integral part of the financial statements.

152

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Small Cap Index Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.10		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.09	***		0.04	***
Net realized and unrealized gain (loss) on investments		(0.13	)		0.10
Total income (loss) from investment operations		(0.04	)		0.14
Less distributions to shareholders:
From net investment income		(0.09	)		(0.04	)
From net realized gains		(0.41	)		-
Total distributions		(0.50	)		(0.04	)
Net asset value, end of period	$	9.56		$	10.10
Total Return(a)		(0.57	)%		1.41	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	58,893		$	68,783
Ratio of expenses to average daily net assets:
Before expense waiver		0.44	%		0.52	% *
After expense waiver		N/A			0.45	% *#
Net investment income (loss) to average daily net assets		0.90	%		0.60	% *
Portfolio turnover rate		15	%		73	% **

MML Global Fund

	Class I						Class II
	Year ended 12/31/07			Period ended 12/31/06+			Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	10.52		$	10.00		$	10.52		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.16	***		0.10	***		0.17	***		0.10	***
Net realized and unrealized gain (loss) on investments		0.22			0.53			0.22			0.53
Total income from investment operations		0.38			0.63			0.39			0.63
Less distributions to shareholders:
From net investment income		(0.16	)		(0.11	)		(0.17	)		(0.11	)
From net realized gains		(0.43	)		-			(0.43	)		-
Total distributions		(0.59	)		(0.11	)		(0.60	)		(0.11	)
Net asset value, end of period	$	10.31		$	10.52		$	10.31		$	10.52
Total Return(a)		3.57	%		6.25	% **		3.75	%		6.30	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	10,156		$	9,698		$	43,429		$	51,804
Ratio of expenses to average daily net assets:
Before expense waiver		1.15	%		1.15	% *		1.05	%		1.04	% *
After expense waiver		0.71	% #		0.71	% *#		0.61	% #		0.61	% *#
Net investment income (loss) to average daily net assets		1.41	%		1.47	% *		1.51	%		1.60	% *
Portfolio turnover rate		56	%		41	% **		56	%		41	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

153

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Foreign Fund

	Year ended 12/31/07			Period ended 12/31/06+
Net asset value, beginning of period	$	11.00		$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.24	***		0.13	***
Net realized and unrealized gain (loss) on investments		1.24			1.00
Total income from investment operations		1.48			1.13
Less distributions to shareholders:
From net investment income		(0.27	)		(0.12	)
From net realized gains		(0.19	)		(0.01	)
Total distributions		(0.46	)		(0.13	)
Net asset value, end of period	$	12.02		$	11.00
Total Return(a)		13.48	%		11.26	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	359,018		$	253,512
Ratio of expenses to average daily net assets:
Before expense waiver		1.00	%		1.03	% *
After expense waiver		N/A			1.02	% *#
Net investment income (loss) to average daily net assets		2.00	%		1.90	% *
Portfolio turnover rate		9	%		9	% **

MML Conservative Allocation Fund

	Period ended 12/31/07++
Net asset value, beginning of period	$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.13	***
Net realized and unrealized gain (loss) on investments		0.18
Total income from investment operations		0.31
Less distributions to shareholders:
From net investment income		(0.20	)
Net asset value, end of period	$	10.11
Total Return(a)		3.09	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	155
Ratio of expenses to average daily net assets:
Before expense waiver		61.88	% *
After expense waiver		0.20	% *#
Net investment income (loss) to average daily net assets		3.81	% *
Portfolio turnover rate		0	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

+ For the period May 1, 2006 (commencement of operations) through December 31, 2006.

++ For the period August 31, 2007 (commencement of operations) through December 31, 2007.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

154

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Balanced Allocation Fund

	Period ended 12/31/07+
Net asset value, beginning of period	$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.11	***
Net realized and unrealized gain (loss) on investments		0.19
Total income from investment operations		0.30
Less distributions to shareholders:
From net investment income		(0.22	)
Net asset value, end of period	$	10.08
Total Return(a)		2.96	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	154
Ratio of expenses to average daily net assets:
Before expense waiver		61.68	% *
After expense waiver		0.20	% *#
Net investment income (loss) to average daily net assets		3.23	% *
Portfolio turnover rate		0	% **

MML Moderate Allocation Fund

	Period ended 12/31/07+
Net asset value, beginning of period	$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.11	***
Net realized and unrealized gain (loss) on investments		0.15
Total income from investment operations		0.26
Less distributions to shareholders:
From net investment income		(0.22	)
Net asset value, end of period	$	10.04
Total Return(a)		2.63	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	154
Ratio of expenses to average daily net assets:
Before expense waiver		61.59	% *
After expense waiver		0.20	% *#
Net investment income (loss) to average daily net assets		3.05	% *
Portfolio turnover rate		0	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

+ For the period August 31, 2007 (commencement of operations) through December 31, 2007.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

155

MML Series Investment Fund – Financial Highlights (Continued)
(For a share outstanding through each period)

MML Growth Allocation Fund

	Period ended 12/31/07+
Net asset value, beginning of period	$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.08	***
Net realized and unrealized gain (loss) on investments		0.17
Total income from investment operations		0.25
Less distributions to shareholders:
From net investment income		(0.23	)
Net asset value, end of period	$	10.02
Total Return(a)		2.45	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	154
Ratio of expenses to average daily net assets:
Before expense waiver		61.40	% *
After expense waiver		0.20	% *#
Net investment income (loss) to average daily net assets		2.44	% *
Portfolio turnover rate		0	% **

MML Aggressive Allocation Fund

	Period ended 12/31/07+
Net asset value, beginning of period	$	10.00
Income (loss) from investment operations:
Net investment income (loss)		0.06	***
Net realized and unrealized gain (loss) on investments		0.16
Total income from investment operations		0.22
Less distributions to shareholders:
From net investment income		(0.23	)
Net asset value, end of period	$	9.99
Total Return(a)		2.15	% **
Ratios / Supplemental Data:
Net assets, end of period (000's)	$	153
Ratio of expenses to average daily net assets:
Before expense waiver		61.22	% *
After expense waiver		0.20	% *#
Net investment income (loss) to average daily net assets		1.85	% *
Portfolio turnover rate		0	% **

* Annualized.

** Percentage represents the results for the period and is not annualized.

*** Per share amount calculated on the average shares method.

+ For the period August 31, 2007 (commencement of operations) through December 31, 2007.

# Computed after giving effect to an agreement by MassMutual to waive certain fees and expenses of the Fund.

The accompanying notes are an integral part of the financial statements.

156

Notes to Financial Statements

1. The Fund
MML Series Investment Fund ("MML Trust") is registered under the Investment Company Act of 1940, as amended (the "1940 Act"), as a no-load, open-end, management investment company. MML Trust is organized under the laws of the Commonwealth of Massachusetts as a Massachusetts business trust pursuant to an Agreement and Declaration of Trust dated May 14, 1993, as amended. The following are eighteen series of MML Trust (each individually referred to as a "Fund" or collectively as the "Funds"): MML Asset Allocation Fund ("Asset Allocation Fund"), MML Equity Income Fund ("Equity Income Fund"), MML Income & Growth Fund ("Income & Growth Fund"), MML Growth & Income Fund ("Growth & Income Fund"), MML Blue Chip Growth Fund ("Blue Chip Growth Fund"), MML Large Cap Growth Fund ("Large Cap Growth Fund"), MML Concentrated Growth Fund ("Concentrated Growth Fund"), MML Mid Cap Value Fund ("Mid Cap Value Fund"), MML Mid Cap Growth Fund ("Mid Cap Growth Fund"), MML Small Cap Value Fund ("Small Cap Value Fund"), MML Small Cap Index Fund ("Small Cap Index Fund"), MML Global Fund ("Global Fund"), MML Foreign Fund ("Foreign Fund"), MML Conservative Allocation Fund ("Conservative Allocation Fund"), MML Balanced Allocation Fund ("Balanced Allocation Fund"), MML Moderate Allocation Fund ("Moderate Allocation Fund"), MML Growth Allocation Fund ("Growth Allocation Fund") and MML Aggressive Allocation Fund ("Aggressive Allocation Fund").

The Asset Allocation Fund, Equity Income Fund, Income & Growth Fund, Growth & Income Fund, Blue Chip Growth Fund, Large Cap Growth Fund, Concentrated Growth Fund, Mid Cap Value Fund, Mid Cap Growth Fund, Small Cap Value Fund, Small Cap Index Fund, Global Fund and Foreign Fund commenced operations on May 1, 2006. The Conservative Allocation Fund, Balanced Allocation Fund, Moderate Allocation Fund, Growth Allocation Fund and Aggressive Allocation Fund commenced operations on August 31, 2007.

MML Trust was established by Massachusetts Mutual Life Insurance Company ("MassMutual") for the purpose of providing vehicles for the investment of assets of various separate investment accounts established by MassMutual and by life insurance companies which are subsidiaries of MassMutual. Shares of MML Trust are not offered to the general public. MassMutual, MML Bay State Life Insurance Company and C.M. Life Insurance Company are the record owners of all of the outstanding shares of the Funds.

The Conservative Allocation Fund, Balanced Allocation Fund, Moderate Allocation Fund, Growth Allocation Fund and Aggressive Allocation Fund invest all of their investable assets in shares of various funds advised by MassMutual as a control affiliate of MassMutual. The financial statements included herein are those of the Funds listed above and the applicable MML Series Investment Funds. The financial statements of the applicable MML Series Investment Funds II, or Oppenheimer Funds which are advised by Oppenheimer Funds, Inc., a majority owned, indirect subsidiary of MassMutual, are presented separately and can be obtained from the SEC's EDGAR database on its Internet site at www.sec.gov or by calling MassMutual at 1-888-309-3539. The assets of each of the five listed above Allocation Funds are diversified and a shareholder's interest is limited to the MML Series Investment Funds, MML Series Investment Funds II or Oppenheimer Funds in which t he shares are invested.

The Concentrated Growth Fund and Global Fund offer two classes of shares: Class I and Class II. Each share class invests in the same portfolio of assets. The principal difference among the classes is the level of service and administration fees borne by the classes. Because each class will have different fees and expenses, performance and share prices among the classes will vary. The classes of shares are offered to different types of investors, as outlined in each Fund's Prospectus.

157

Notes to Financial Statements (Continued)

Investment Valuation
Equity securities are valued on the basis of valuations furnished by a pricing service, authorized by the Board of Trustees ("Trustees"), which provides the last reported sale price for securities listed on a national securities exchange or the official closing price on the NASDAQ National Market System, or in the case of over-the-counter securities not so listed, the last reported bid price. Debt securities (other than short-term obligations) are valued on the basis of valuations furnished by a pricing service, authorized by the Trustees, which determines valuations taking into account appropriate factors such as institutional-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, trading characteri stics and other market data. Short-term securities are valued at either amortized cost or at original cost plus accrued interest, whichever approximates current market value. Shares of other funds are valued at their net asset value as reported on each business day. All other securities and other assets, including futures, options, swaps and debt securities for which the prices supplied by a pricing agent are deemed by the Trustees not to be representative of market values, including restricted securities and securities for which no market quotation is available, are valued at fair value in accordance with procedures approved by the Trustees. Securities are typically valued on the basis of valuations furnished by a primary pricing service or, if no such valuation is available, from a secondary pricing service. However, valuation methods approved by the Trustees which are intended to reflect fair value may be used when pricing service information is not readily available or when a security's value is believed to have been materially affected by a significant event, such as a natural disaster, an economic event like a bankruptcy filing, or a substantial fluctuation in domestic or foreign markets, that has occurred after the close of the exchange or market on which the security is principally traded (for example, a foreign exchange or market). In such a case, a Fund's value for a security is likely to be different from the last quoted market price or pricing service information. In addition, a fair value pricing service is used to assist in the pricing of each of the foreign securities held by the MML Trust's foreign funds. Due to the subjective and variable nature of fair value pricing, it is possible that the value determined for a particular asset may be materially different from the value realized upon such asset's sale.

Portfolio securities traded on more than one national securities exchange are valued at the last price on the business day as of which such value is being determined at the close of the exchange representing the principal market for such securities. All assets and liabilities expressed in foreign currencies are converted into U.S. dollars at the mean between the buying and selling rates of such currencies against U.S. dollars last quoted by any major bank. If such quotations are not available, the rate of exchange is determined in accordance with policies established by the Trustees.

158

Notes to Financial Statements (Continued)

At December 31, 2007, the Funds loaned securities having the following market values collateralized by cash, which was invested in short-term instruments in the following amounts:

	Securities on Loan		Collateral
Asset Allocation Fund	$	11,974,797	$	12,559,938
Equity Income Fund		19,265,352		20,245,454
Income & Growth Fund		11,709,813		12,220,409
Growth & Income Fund		19,388,223		20,307,619
Blue Chip Growth Fund		3,093,978		3,204,471
Large Cap Growth Fund		5,340,526		5,520,513
Concentrated Growth Fund		4,682,002		4,860,663
Mid Cap Value Fund		43,672,946		45,349,521
Mid Cap Growth Fund		57,387,548		59,860,059
Small Cap Value Fund		41,146,342		43,244,140
Small Cap Index Fund		13,795,929		14,509,705
Global Fund		1,593,628		1,661,886
Foreign Fund		15,134,397		16,056,501
	$	248,185,481	$	259,600,879

MML Trust receives, as fees, a share of the income earned on investment of the cash collateral received for the loan of securities. For the year ended December 31, 2007, the MML Trust earned securities lending agent fees as follows:

	Securities Lending Gross Income		Securities Lending Fees and Expenses		Securities Lending Net Income
Asset Allocation Fund	$	1,383,649	$	1,303,360	$	80,289
Equity Income Fund		1,513,352		1,429,709		83,643
Income & Growth Fund		938,386		862,518		75,868
Growth & Income Fund		1,764,109		1,655,638		108,471
Blue Chip Growth Fund		286,011		275,374		10,637
Large Cap Growth Fund		359,015		327,680		31,335
Concentrated Growth Fund		608,311		545,364		62,947
Mid Cap Value Fund		2,445,031		2,332,373		112,658
Mid Cap Growth Fund		3,511,237		3,327,580		183,657
Small Cap Value Fund		2,380,268		2,141,992		238,276
Small Cap Index Fund		780,140		693,027		87,113
Global Fund		220,355		201,791		18,564
Foreign Fund		1,457,009		1,255,658		201,351
	$	17,646,873	$	16,352,064	$	1,294,809

159

Notes to Financial Statements (Continued)

Repurchase Agreements
Each Fund may enter into repurchase agreements with certain banks and broker/dealers whereby a Fund acquires a security for cash and obtains a simultaneous commitment from the seller to repurchase the security at an agreed upon price and date. The Funds, through their custodian, take possession of the securities collateralizing the repurchase agreement. The collateral is marked to market daily to ensure that the market value of the underlying assets remains sufficient to protect the Funds in the event of default by the seller. Collateral for certain tri-party repurchase agreements is held at the counterparty's custodian in a segregated account for the benefit of the Funds and the counterparty. In connection with transactions in repurchase agre ements, if the seller defaults and the value of the collateral declines or if the seller enters insolvency proceedings, realization of collateral by the Funds may be delayed or limited.

Accounting for Investments
Investment transactions are accounted for on the trade date. Realized gains and losses on sales of investments (which may include proceeds received from litigation) and unrealized appreciation and depreciation of investments are computed by the specific identification cost method. Interest income, adjusted for amortization of discounts and premiums on debt securities, is earned from the settlement date and is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date.

Accordingly, the Funds may periodically make reclassifications among certain of their capital accounts without affecting the net asset value of the Funds.

During the year ended December 31, 2007, the following amounts were reclassified due to differences between book and tax accounting.

	Paid-in Capital			Accumulated Net Realized Gain on Investments			Undistributed Net Investment Income
Asset Allocation Fund	$	-		$	(81,415	)	$	81,415
Equity Income Fund		-			3,638			(3,638	)
Income & Growth Fund		10,020			12,910			(22,930	)
Growth & Income Fund		(9,051	)		8,316			735
Blue Chip Growth Fund		(20,961	)		3,587			17,374
Large Cap Growth Fund		(14,278	)		-			14,278
Concentrated Growth Fund		(10,356	)		13,645			(3,289	)
Mid Cap Value Fund		1			661,425			(661,426	)
Mid Cap Growth Fund		-			(11,834	)		11,834
Small Cap Value Fund		(112,046	)		238,028			(125,982	)
Small Cap Index Fund		-			68,567			(68,567	)
Global Fund		(1	)		25,827			(25,826	)
Foreign Fund		-			(851,404	)		851,404
Conservative Allocation Fund		-			(1,011	)		1,011
Balanced Allocation Fund		-			(1,554	)		1,554
Moderate Allocation Fund		-			(1,765	)		1,765
Growth Allocation Fund		-			(2,108	)		2,108
Aggressive Allocation Fund		-			(2,415	)		2,415

160

Notes to Financial Statements (Continued)

Forward Foreign Currency Contracts
Each Fund may enter into forward foreign currency contracts in order to hedge the effect of currency movements of foreign denominated securities or obligations. A forward foreign currency contract is an agreement between two parties to buy and sell a currency at a set price on a future date. The market value of a forward foreign currency contract fluctuates with changes in foreign currency exchange and interest rates. Forward foreign currency contracts are marked to market daily and the change in their value is recorded by the Funds as an unrealized gain or loss. When a forward foreign currency contract is extinguished, through delivery or offset by ente ring into another forward foreign currency contract, the Funds record a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value of the contract at the time it was extinguished or offset.

A summary of open forward foreign currency contracts for the Asset Allocation Fund and the Mid Cap Value Fund at December 31, 2007 was as follows:

Settlement Date	Contracts to Deliver/Receive	Units of Currency		In Exchange for U.S. Dollars		Contracts at Value		Net Unrealized Appreciation (Depreciation)
Asset Allocation Fund
BUYS
1/16/08	Euro		90,554	$	132,345	$	132,867	$	522
1/16/08	Japanese Yen		11,572,365		105,000		103,493		(1,507	)
								$	(985	)
SELLS
1/16/08	British Pound		65,000	$	132,345	$	129,762	$	2,583
Mid Cap Value Fund
SELLS
1/31/08	Canadian Dollar		2,089,192		2,130,526		2,107,341		23,185
1/31/08	Euro		4,373,944		6,375,679		6,395,432		(19,753	)
								$	3,432

161

Notes to Financial Statements (Continued)

A summary of open futures contracts for the Small Cap Value Fund and Small Cap Index Fund at December 31, 2007, was as follows:

Number of
Contracts

Type

Expiration Date

Notional
Contract
Value

Net Unrealized
Appreciation

Small Cap Value Fund

BUYS
30

Russell Mini

3/20/08

2,316,600

9,420

Small Cap Index Fund

BUYS
7

Russell Mini

3/20/08

540,540

9,960

Allocation of Operating Activity
In maintaining the records for the Concentrated Growth Fund and Global Fund, the income and expense accounts are allocated to each class of shares. Investment income, unrealized and realized gains or losses are prorated among the classes of shares based on the relative net assets of each. Expenses are allocated to each class of shares depending on the nature of the expenditures. Administration fees, which are directly attributable to a class of shares, are charged to that class' operations. Expenses of the Fund not directly attributable to the operations of any class of shares are prorated among the classes to which the expense relates based on the relative net assets of each.

Foreign Securities
The Foreign Fund invests substantially all of its assets in foreign securities. The other Funds may also invest in foreign securities, subject to certain percentage restrictions. Investing in securities of foreign companies and foreign governments involves special risks and considerations not typically associated with investing in securities of U.S. companies and the U.S. Government. These risks include revaluation of currencies and future adverse political and economic developments. Moreover, securities of many foreign companies and foreign governments and their markets may be less liquid and their prices more volatile than those of securities of comparable U.S. companies and the U.S. Government.

162

Notes to Financial Statements (Continued)

	Aggregate Cost		Aggregate Value		Value as Percentage of Fund's Net Assets
Asset Allocation Fund	$	11,347,118	$	10,287,254		4.0	%
Mid Cap Growth Fund		108,690		108,690		0.0	%

3. Management Fees and Other Transactions

Investment Management Fees
Under agreements between MML Trust and MassMutual on behalf of each Fund, MassMutual is responsible for providing investment management services for each Fund. In return for this service, MassMutual receives advisory fees quarterly based on the following annual rates:

Asset Allocation Fund	0.55	%	Small Cap Value Fund	0.75	%

Equity Income Fund	0.75	%	Small Cap Index Fund	0.35	%

Income & Growth Fund	0.65	%	Global Fund	0.60	%

Growth & Income Fund	0.50	%	Foreign Fund	0.89	%

Blue Chip Growth Fund	0.75	%	Conservative Allocation Fund	0.10	%

Large Cap Growth Fund	0.65	%	Balanced Allocation Fund	0.10	%

Concentrated Growth Fund	0.60	%	Moderate Allocation Fund	0.10	%

Mid Cap Value Fund	0.84	%	Growth Allocation Fund	0.10	%

Mid Cap Growth Fund	0.77	%	Aggressive Allocation Fund	0.10	%

MassMutual has entered into investment sub-advisory agreements with the following unaffiliated investment sub-advisers: Capital Guardian Trust Company for the Asset Allocation Fund and Growth & Income Fund, T. Rowe Price Associates, Inc. for the Equity Income Fund, Blue Chip Growth Fund and Mid Cap Growth Fund, American Century Investment Management, Inc. for the Income & Growth Fund and Mid Cap Value Fund, AllianceBernstein L.P. for the Large Cap Growth Fund and Small Cap Value Fund, Legg Mason Capital Management, Inc. for the Concentrated Growth Fund, Goldman Sachs Asset Management, L.P. for the Small Cap Value Fund, Northern Trust Investments, N.A. for the Small Cap Index Fund, Neuberger Berman Management, Inc. for the Global Fund, and Templeton Investment Counsel, LLC for the Foreign Fund. MassMutual pays a sub-advisory fee to each of these sub-advisers based upon the aggregate net assets under management which include (1) the av erage daily net assets of the specified Fund which it manages, and (2) the average daily net assets of all other funds or accounts of MassMutual or its affiliates for which the sub-adviser provides sub-advisory services and which have substantially the same investment objectives, policies and investment strategies.

The Fund sub-adviser fees are paid out of the management fees previously disclosed above.

Administration & Shareholder Service Fees
For the Concentrated Growth Fund and Global Fund, under a separate administrative and shareholder services agreement between the Funds and MassMutual, MassMutual provides certain administrative and shareholder services and bears some of the class specific administrative expenses. In return for these services, MassMutual receives an administrative services fee monthly based upon the average daily net assets of the applicable class of shares of the Funds at the following annual rates: 0.24% of the average daily net assets of Class I shares and 0.14% of Class II shares of the Concentrated Growth Fund, 0.28% of the average daily net assets of Class I shares and 0.18% of Class II shares of the Global Fund.

163

Notes to Financial Statements (Continued)

Expense Waivers
MassMutual agreed to cap the fees and expenses of the Funds through April 30, 2009, unless otherwise noted, as follows:

Asset Allocation Fund	0.57	%	Small Cap Value Fund	0.88	%

Equity Income Fund	0.85	%	Small Cap Index Fund	0.45	%

Income & Growth Fund	0.70	%	Global Fund

Growth & Income Fund	0.52	%	Class I	0.71	%

Blue Chip Growth Fund	0.85	%	Class II	0.61	%

Large Cap Growth Fund	0.73	%	Foreign Fund	1.02	%

Concentrated Growth Fund			Conservative Allocation Fund	0.20	%

Class I	0.76	%	Balanced Allocation Fund	0.20	%

Class II	0.66	%	Moderate Allocation Fund	0.20	%

Mid Cap Value Fund	0.93	%	Growth Allocation Fund	0.20	%

Mid Cap Growth Fund	0.85	%	Aggressive Allocation Fund	0.20	%

Indirect Expenses
The Conservative Allocation Fund, Balanced Allocation Fund, Moderate Allocation Fund, Growth Allocation Fund and Aggressive Allocation Fund incur fees and expenses indirectly as shareholders in the underlying funds. For the year ended December 31, 2007 these expenses were as follows:

	Indirect Operating Expenses
Conservative Allocation Fund		0.63	%
Balanced Allocation Fund		0.66	%
Moderate Allocation Fund		0.69	%
Growth Allocation Fund		0.73	%
Aggressive Allocation Fund		0.78	%

Rebated Brokerage Commissions
The Asset Allocation Fund, Growth & Income Fund, Blue Chip Growth Fund, Large Cap Growth Fund, Concentrated Growth Fund and Global Fund have entered into agreements with certain brokers whereby the brokers will rebate, in cash, a portion of brokerage commissions. Rebated brokerage commissions are amounts earned by the Funds and are included with realized gain or loss on investment transactions presented in the Statement of Operations. For the year ended December 31, 2007, brokerage commissions rebated under these agreements are as follows:

	Rebated Commissions
Asset Allocation Fund	$	6,642
Equity Income Fund		9
Growth & Income Fund		9,198
Blue Chip Growth Fund		1,123
Large Cap Growth Fund		10,408
Concentrated Growth Fund		20,526
Global Fund		9,224
Foreign Fund		1,936

Other
Certain Officers and Trustees of the Funds are also Officers of MassMutual. The compensation of each Trustee who is not an Officer of MassMutual is borne by the Funds.

For the year ended December 31, 2007, no significant amounts have been deferred.

164

Notes to Financial Statements (Continued)

4. Purchases and Sales of Investments
Cost of purchases and proceeds from sales of investment securities (excluding short-term investments) for the year ended December 31, 2007, were as follows:

	Purchases				Sales
	Long-Term U.S. Government Securities		Other Long-Term Securities		Long-Term U.S. Government Securities		Other Long-Term Securities
Asset Allocation Fund	$	50,584,898	$	112,205,437	$	49,436,234	$	118,745,917
Equity Income Fund		-		174,780,522		-		86,907,877
Income & Growth Fund		-		96,472,816		-		124,422,565
Growth & Income Fund		-		110,638,423		-		138,102,144
Blue Chip Growth Fund		-		20,767,705		-		20,573,601
Large Cap Growth Fund		-		64,393,809		-		77,208,598
Concentrated Growth Fund		-		49,217,471		-		59,636,638
Mid Cap Value Fund		-		838,546,149		-		777,320,537
Mid Cap Growth Fund		-		88,328,954		-		136,408,781
Small Cap Value Fund		-		405,394,658		-		331,014,647
Small Cap Index Fund		-		9,927,181		-		19,236,461
Global Fund		-		32,475,966		-		42,779,402
Foreign Fund		-		99,390,712		-		28,746,852
Conservative Allocation Fund		-		154,236		-		-
Balanced Allocation Fund		-		154,839		-		-
Moderate Allocation Fund		-		155,178		-		-
Growth Allocation Fund		-		155,602		-		-
Aggressive Allocation Fund		-		155,894		-		-

	Year ended December 31, 2007						Period ended December 31, 2006*
	Shares			Amount			Shares			Amount
Asset Allocation Fund
Sold		2,232,214		$	23,609,649			27,502,423		$	275,149,248
Issued as reinvestment of dividends		1,257,964			12,776,466			430,008			4,441,990
Redeemed		(3,584,268	)		(38,089,344	)		(2,075,883	)		(20,855,215	)
Net increase (decrease)		(94,090	)	$	(1,703,229	)		25,856,548		$	258,736,023
Equity Income Fund
Sold		9,072,256		$	103,484,328			27,573,685		$	277,187,365
Issued as reinvestment of dividends		1,639,765			18,082,042			313,366			3,453,301
Redeemed		(2,191,889	)		(25,074,619	)		(1,243,183	)		(12,665,806	)
Net increase (decrease)		8,520,132		$	96,491,751			26,643,868		$	267,974,860
Income & Growth Fund
Sold		603,651		$	6,874,369			18,731,766		$	187,451,244
Issued as reinvestment of dividends		952,868			10,089,142			199,677			2,214,426
Redeemed		(3,284,420	)		(37,382,175	)		(2,533,456	)		(25,811,041	)
Net increase (decrease)		(1,727,901	)	$	(20,418,664	)		16,397,987		$	163,854,629
Growth & Income Fund
Sold		1,194,894		$	12,781,800			31,559,498		$	315,479,460
Issued as reinvestment of dividends		1,405,802			14,369,404			211,553			2,200,151
Redeemed		(4,303,289	)		(46,430,568	)		(2,549,295	)		(25,226,572	)
Net increase (decrease)		(1,702,593	)	$	(19,279,364	)		29,221,756		$	292,453,039
Blue Chip Growth Fund
Sold		828,780		$	9,563,460			5,625,992		$	56,210,528
Issued as reinvestment of dividends		21,776			255,874			11,906			126,319
Redeemed		(828,243	)		(9,475,746	)		(462,328	)		(4,576,844	)
Net increase (decrease)		22,313		$	343,588			5,175,570		$	51,760,003

165

Notes to Financial Statements (Continued)

	Year ended December 31, 2007						Period ended December 31, 2006*
	Shares			Amount			Shares			Amount
Large Cap Growth Fund
Sold		337,150		$	3,633,481			8,965,431		$	89,463,307
Issued as reinvestment of dividends		10,013			112,565			8,009			80,325
Redeemed		(1,588,675	)		(17,104,606	)		(1,187,393	)		(11,216,015	)
Net increase (decrease)		(1,241,512	)	$	(13,358,560	)		7,786,047		$	78,327,617
Concentrated Growth Fund Class I
Sold		583,231		$	6,826,400			2,093,938		$	20,844,070
Issued as reinvestment of dividends		116,066			1,337,045			1,594			16,351
Redeemed		(308,206	)		(3,499,152	)		(329,650	)		(3,065,147	)
Net increase (decrease)		391,091		$	4,664,293			1,765,882		$	17,795,274
Concentrated Growth Fund Class II
Sold		343,761		$	4,028,201			7,687,823		$	76,779,133
Issued as reinvestment of dividends		315,347			3,637,301			9,595			98,442
Redeemed		(1,438,130	)		(16,112,976	)		(1,361,345	)		(12,841,516	)
Net increase (decrease)		(779,022	)	$	(8,447,474	)		6,336,073		$	64,036,059
Mid Cap Value Fund
Sold		9,775,681		$	105,220,314			34,834,630		$	349,217,166
Issued as reinvestment of dividends		5,460,605			53,731,437			935,015			10,163,610
Redeemed		(4,320,403	)		(47,805,952	)		(2,555,702	)		(26,051,100	)
Net increase (decrease)		10,915,883		$	111,145,799			33,213,943		$	333,329,676
Mid Cap Growth Fund
Sold		1,588,498		$	18,019,237			32,808,454		$	327,799,856
Issued as reinvestment of dividends		1,241,882			14,127,242			-			-
Redeemed		(5,666,290	)		(63,190,964	)		(4,417,781	)		(42,403,798	)
Net increase (decrease)		(2,835,910	)	$	(31,044,485	)		28,390,673		$	285,396,058
Small Cap Value Fund
Sold		11,769,574		$	112,506,376			20,474,765		$	203,522,069
Issued as reinvestment of dividends		280,603			2,368,286			132,087			1,393,516
Redeemed		(2,451,427	)		(24,066,689	)		(778,975	)		(7,596,764	)
Net increase (decrease)		9,598,750		$	90,807,973			19,827,877		$	197,318,821
Small Cap Index Fund
Sold		408,168		$	4,273,953			7,829,708		$	78,069,483
Issued as reinvestment of dividends		298,903			2,949,832			27,227			277,452
Redeemed		(1,353,796	)		(14,251,782	)		(1,047,663	)		(10,047,438	)
Net increase (decrease)		(646,725	)	$	(7,027,997	)		6,809,272		$	68,299,497
Global Fund Class I
Sold		113,374		$	1,243,680			971,340		$	9,675,215
Issued as reinvestment of dividends		52,305			549,801			9,130			96,142
Redeemed		(102,763	)		(1,130,522	)		(58,237	)		(558,456	)
Net increase (decrease)		62,916		$	662,959			922,233		$	9,212,901
Global Fund Class II
Sold		204,860		$	2,286,187			5,770,054		$	57,737,234
Issued as reinvestment of dividends		231,585			2,434,831			51,156			539,189
Redeemed		(1,150,601	)		(12,644,093	)		(895,905	)		(8,644,815	)
Net increase (decrease)		(714,156	)	$	(7,923,075	)		4,925,305		$	49,631,608
Foreign Fund
Sold		8,943,938		$	107,366,916			24,069,966		$	241,284,833
Issued as reinvestment of dividends		1,107,873			13,319,538			261,637			2,880,622
Redeemed		(3,231,872	)		(38,216,434	)		(1,276,745	)		(12,715,773	)
Net increase (decrease)		6,819,939		$	82,470,020			23,054,858		$	231,449,682
Conservative Allocation Fund**
Sold		15,000		$	150,000			-		$	-
Issued as reinvestment of dividends		296			2,986			-			-
Redeemed		-			-			-			-
Net increase (decrease)		15,296		$	152,986			-		$	-

166

Notes to Financial Statements (Continued)

	Year ended December 31, 2007				Period ended December 31, 2006*
	Shares		Amount		Shares		Amount
Balanced Allocation Fund**
Sold		15,000	$	150,000		-	$	-
Issued as reinvestment of dividends		321		3,233		-		-
Redeemed		-		-		-		-
Net increase (decrease)		15,321	$	153,233		-	$	-
Moderate Allocation Fund**
Sold		15,000	$	150,000		-	$	-
Issued as reinvestment of dividends		334		3,353		-		-
Redeemed		-		-		-		-
Net increase (decrease)		15,334	$	153,353		-	$	-
Growth Allocation Fund**
Sold		15,000	$	150,000		-	$	-
Issued as reinvestment of dividends		337		3,383		-		-
Redeemed		-		-		-		-
Net increase (decrease)		15,337	$	153,383		-	$	-
Aggressive Allocation Fund**
Sold		15,000	$	150,000		-	$	-
Issued as reinvestment of dividends		338		3,387		-		-
Redeemed		-		-		-		-
Net increase (decrease)		15,338	$	153,387		-	$	-

* Funds commenced operations on May 1, 2006.

** Fund commenced operations on August 31, 2007.

	Federal Income Tax Cost		Tax Basis Unrealized Appreciation		Tax Basis Unrealized Depreciation			Net Unrealized Appreciation/ (Depreciation)
Asset Allocation Fund	$	269,050,477	$	20,578,333	$	(22,153,556	)	$	(1,575,223	)
Equity Income Fund		388,271,459		34,934,336		(26,447,777	)		8,486,559
Income & Growth Fund		151,901,471		19,809,032		(9,856,315	)		9,952,717
Growth & Income Fund		292,569,075		30,037,362		(33,149,350	)		(3,111,988	)
Blue Chip Growth Fund		54,997,849		12,070,474		(2,140,043	)		9,930,431
Large Cap Growth Fund		69,886,993		12,705,180		(2,902,182	)		9,802,998
Concentrated Growth Fund		80,450,613		13,924,133		(4,022,201	)		9,901,932
Mid Cap Value Fund		470,658,598		7,695,342		(36,142,006	)		(28,446,664	)
Mid Cap Growth Fund		318,573,543		49,536,126		(22,496,262	)		27,039,864
Small Cap Value Fund		306,559,585		8,291,381		(33,513,850	)		(25,222,469	)
Small Cap Index Fund		76,479,992		7,686,054		(10,651,641	)		(2,965,587	)
Global Fund		53,272,017		6,984,445		(5,138,070	)		1,846,375
Foreign Fund		340,186,775		61,421,872		(16,293,442	)		45,128,430
Conservative Allocation Fund		154,236		3,343		(2,894	)		449
Balanced Allocation Fund		154,839		3,240		(3,604	)		(364	)
Moderate Allocation Fund		155,178		2,890		(3,939	)		(1,049	)
Growth Allocation Fund		155,602		2,869		(4,702	)		(1,833	)
Aggressive Allocation Fund		155,894		2,674		(5,167	)		(2,493	)

167

Notes to Financial Statements (Continued)

At December 31, 2007, the following Funds had available, for Federal income tax purposes, unused capital losses:

	Expiring 2014
Blue Chip Growth Fund	$	216,675
Large Cap Growth Fund		527,453
Small Cap Value Fund		4,165,906

Net capital loss carryforwards may be applied against any net realized taxable gains in each succeeding year, or until their respective expiration dates, whichever occurs first.

Certain differences exist from the amounts reflected in the Statement of Changes in Net Assets primarily due to the character of short-term capital gains treated as ordinary income for tax purposes.

The tax character of distributions paid during the year ended December 31, 2007 was as follows:

	Ordinary Income		Long Term Capital Gain		Return of Capital
Asset Allocation Fund	$	8,838,949	$	3,937,517	$	-
Equity Income Fund		10,959,285		7,122,757		-
Income & Growth Fund		4,756,729		5,327,099		5,314
Growth & Income Fund		7,614,704		6,745,650		9,050
Blue Chip Growth Fund		234,912		-		20,962
Large Cap Growth Fund		112,565		-		-
Concentrated Growth Fund		3,244,044		1,730,302		-
Mid Cap Value Fund		49,295,888		4,435,549		-
Mid Cap Growth Fund		4,085,085		10,042,157		-
Small Cap Value Fund		2,320,011		-		48,275
Small Cap Index Fund		1,030,496		1,919,336		-
Global Fund		1,704,610		1,280,022		-
Foreign Fund		9,834,753		3,484,785		-
Conservative Allocation Fund		2,986		-		-
Balanced Allocation Fund		3,233		-		-
Moderate Allocation Fund		3,353		-		-
Growth Allocation Fund		3,383		-		-
Aggressive Allocation Fund		3,387		-		-

168

Notes to Financial Statements (Continued)

The tax character of distributions paid during the year ended December 31, 2006 was as follows:

	Ordinary Income		Long Term Capital Gain		Short Term Capital Gain		Return of Capital
Asset Allocation Fund	$	4,441,989	$	-	$	-	$	-
Equity Income Fund		3,452,327		974		-		-
Income & Growth Fund		2,125,212		-		-		89,214
Growth & Income Fund		2,200,151		-		-		-
Blue Chip Growth Fund		123,335		-		-		2,984
Large Cap Growth Fund		80,325		-		-		-
Concentrated Growth Fund		107,796		-		-		6,998
Mid Cap Value Fund		10,143,421		20,189		-		-
Small Cap Value Fund		1,371,509		-		-		22,007
Small Cap Index Fund		249,541		27,911		-		-
Global Fund		635,331		-		-		-
Foreign Fund		2,798,551		-		-		82,071

At December 31, 2007, the components of distributable earnings on a tax basis were as follows:

	Undistributed Ordinary Income		Long Term Capital Gain (Capital Loss Carryover)			Other Temporary Differences			Unrealized Appreciation (Depreciation)*
Asset Allocation Fund	$	167,666	$	-		$	(329,929	)	$	(1,576,347	)
Equity Income Fund		673,011		5,006,158			(20,704	)		8,490,768
Income & Growth Fund		-		-			(3,131,785	)		10,047,264
Growth & Income Fund		-		-			(249,909	)		(3,111,988	)
Blue Chip Growth Fund		-		(216,675	)		(92,231	)		9,930,662
Large Cap Growth Fund		-		(527,453	)		(5,173	)		9,802,998
Concentrated Growth Fund		-		-			(2,317,375	)		9,901,932
Mid Cap Value Fund		15,644		-			(11,117,991	)		(28,444,746	)
Mid Cap Growth Fund		801,909		3,730,658			(19,583	)		27,040,279
Small Cap Value Fund		-		(4,165,906	)		(10,030,701	)		(25,213,049	)
Small Cap Index Fund		-		591,894			(14,449	)		(2,955,627	)
Global Fund		-		163,279			(3,966	)		1,847,152
Foreign Fund		118,077		-			(17,057	)		45,079,569
Conservative Allocation Fund		1		1,146			-			449
Balanced Allocation Fund		-		1,502			-			(364	)
Moderate Allocation Fund		-		1,721			-			(1,049	)
Growth Allocation Fund		-		2,114			-			(1,833	)
Aggressive Allocation Fund		-		2,402			-			(2,493	)

*Includes unrealized appreciation (depreciation) on investments, derivatives and foreign currency denominated assets and liabilities if any.

The following Funds have elected to pass through foreign tax credit for the year ended December 31, 2007.

	Amount
Global Fund	$	49,483
Foreign Fund		633,537

169

Notes to Financial Statements (Continued)

Pursuant to Section 852 of the Internal Revenue Code, the following Funds have designated capital gain dividends for the year ended December 31, 2007.

	Long Term Capital Dividend
Asset Allocation Fund	$	3,937,517
Equity Income Fund		7,122,757
Income & Growth Fund		5,327,099
Growth & Income Fund		6,745,650
Concentrated Growth Fund		1,730,302
Mid Cap Value Fund		4,435,549
Mid Cap Growth Fund		10,042,157
Small Cap Index Fund		1,919,336
Global Fund		1,280,022
Foreign Fund		3,484,785

The following Funds elected to defer to January 1, 2008 post-October capital losses:

	Amount
Asset Allocation Fund	$	185,811
Income & Growth Fund		3,025,657
Growth & Income Fund		229,933
Blue Chip Growth Fund		87,984
Concentrated Growth Fund		2,298,066
Mid Cap Value Fund		11,089,902
Small Cap Value Fund		10,007,314

The following Funds elected to defer to January 1, 2008 post-October currency losses:

	Amount
Blue Chip Growth Fund	$	1,747
Concentrated Growth Fund		13,641

170

Notes to Financial Statements (Continued)

7. Investment in Affiliated Issuers
A summary of the Fund's transactions in the securities of these issuers during the period ended December 31, 2007, was as follows:

	Number of Shares Held, Beginning of Period		Purchases		Sales		Number of Shares Held, End of Period		Value, End of Period		Dividend Income		Realized Gains Distributions
Conservative Allocation Fund
Blue Chip Growth Fund		-		1,329		-		1,329	$	15,781	$	66	$	-
Equity Fund		-		440		-		440		10,270		194		999
Equity Income Fund		-		978		-		978		10,533		167		315
Inflation-Protected Bond Fund		-		2,971		-		2,971		31,409		582		-
Managed Bond Fund		-		3,155		-		3,155		38,745		1,000		-
Mid Cap Growth Fund		-		419		-		419		4,682		4		226
Mid Cap Value Fund		-		309		-		309		2,838		32		282
Small Cap Equity Fund		-		485		-		485		4,371		34		335
Oppenheimer Global Securities Fund, Non-Service Shares		-		168		-		168		6,143		-		-
Oppenheimer International Fund, Non-Service Shares		-		2,941		-		2,941		6,265		-		-
Oppenheimer Strategic Bond Fund, Non-Service Shares		-		4,253		-		4,253		23,648		-		-
Totals									$	154,685	$	2,079	$	2,157
Balanced Allocation Fund
Blue Chip Growth Fund		-		1,197		-		1,197	$	14,203	$	59	$	-
Concentrated Growth Fund, Class I		-		848		-		848		9,405		20		525
Equity Fund		-		502		-		502		11,737		222		1,143
Equity Income Fund		-		1,257		-		1,257		13,542		215		405
Inflation-Protected Bond Fund		-		2,971		-		2,971		31,409		582		-
Managed Bond Fund		-		1,893		-		1,893		23,248		600		-
Mid Cap Growth Fund		-		419		-		419		4,682		4		226
Mid Cap Value Fund		-		464		-		464		4,257		47		422
Small Cap Equity Fund		-		485		-		485		4,370		34		335
Oppenheimer Global Securities Fund, Non-Service Shares		-		168		-		168		6,143		-		-
Oppenheimer International Fund, Non-Service Shares		-		3,676		-		3,676		7,831		-		-
Oppenheimer Strategic Bond Fund, Non-Service Shares		-		4,253		-		4,253		23,648		-		-
Totals									$	154,475	$	1,783	$	3,056

171

Notes to Financial Statements (Continued)

	Number of Shares Held, Beginning of Period		Purchases		Sales		Number of Shares Held, End of Period		Value, End of Period		Dividend Income		Realized Gains Distributions
Moderate Allocation Fund
Blue Chip Growth Fund		-		1,329		-		1,329	$	15,781	$	66	$	-
Concentrated Growth Fund, Class I		-		989		-		989		10,972		23		613
Equity Fund		-		502		-		502		11,737		222		1,143
Equity Income Fund		-		1,397		-		1,397		15,047		239		450
Inflation-Protected Bond Fund		-		2,229		-		2,229		23,557		437		-
Managed Bond Fund		-		1,893		-		1,893		23,248		600		-
Mid Cap Growth Fund		-		419		-		419		4,682		4		226
Mid Cap Value Fund		-		618		-		618		5,677		63		563
Small Cap Equity Fund		-		485		-		485		4,370		34		335
Small Cap Growth Equity Fund		-		273		-		273		4,651		5		156
Oppenheimer Global Securities Fund, Non-Service Shares		-		210		-		210		7,678		-		-
Oppenheimer International Fund, Non-Service Shares		-		5,147		-		5,147		10,963		-		-
Oppenheimer Strategic Bond Fund, Non-Service Shares		-		2,836		-		2,836		15,766		-		-
Totals									$	154,129	$	1,693	$	3,486
Growth Allocation Fund
Blue Chip Growth Fund		-		1,728		-		1,728	$	20,515	$	85	$	-
Concentrated Growth Fund, Class I		-		1,272		-		1,272		14,107		29		788
Equity Fund		-		628		-		628		14,672		277		1,427
Equity Income Fund		-		1,677		-		1,677		18,056		287		540
Inflation-Protected Bond Fund		-		1,337		-		1,337		14,134		262		-
Managed Bond Fund		-		1,010		-		1,010		12,399		321		-
Mid Cap Growth Fund		-		558		-		558		6,243		5		302
Mid Cap Value Fund		-		618		-		618		5,676		63		563
Small Cap Equity Fund		-		646		-		646		5,827		45		446
Small Cap Growth Equity Fund		-		273		-		273		4,651		6		156
Oppenheimer Global Securities Fund, Non-Service Shares		-		252		-		252		9,214		-		-
Oppenheimer International Fund, Non-Service Shares		-		7,353		-		7,353		15,662		-		-
Oppenheimer Strategic Bond Fund, Non-Service Shares		-		2,268		-		2,268		12,613		-		-
Totals									$	153,769	$	1,380	$	4,222

172

Notes to Financial Statements (Continued)

	Number of Shares Held, Beginning of Period		Purchases		Sales		Number of Shares Held, End of Period		Value, End of Period		Dividend Income		Realized Gains Distributions
Aggressive Allocation Fund
Blue Chip Growth Fund		-		1,861		-		1,861	$	22,094	$	92	$	-
Concentrated Growth Fund, Class I		-		1,413		-		1,413		15,674		33		876
Equity Fund		-		628		-		628		14,672		277		1,428
Equity Income Fund		-		1,677		-		1,677		18,056		286		540
Inflation-Protected Bond Fund		-		594		-		594		6,282		116		-
Managed Bond Fund		-		379		-		379		4,649		120		-
Mid Cap Growth Fund		-		838		-		838		9,365		8		452
Mid Cap Value Fund		-		773		-		773		7,096		79		704
Small Cap Equity Fund		-		808		-		808		7,284		57		558
Small Cap Growth Equity Fund		-		455		-		455		7,752		9		259
Oppenheimer Global Securities Fund, Non-Service Shares		-		378		-		378		13,821		-		-
Oppenheimer International Fund, Non-Service Shares		-		10,294		-		10,294		21,926		-		-
Oppenheimer Strategic Bond Fund, Non-Service Shares		-		851		-		851		4,730		-		-
Totals									$	153,401	$	1,077	$	4,817

8. Indemnifications
Under the Funds' organizational documents, current and former Trustees and Officers are provided with a limited indemnification against liabilities arising in connection with the performance of their duties to the Funds, and shareholders are indemnified against personal liability for obligations of the Funds. In the normal course of business, the Funds may also enter into contracts that provide general indemnifications. The Funds' maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against the Funds. The risk of material loss from such claims is considered remote.

9. New Accounting Pronouncements
In September 2006, Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" ("SFAS 157"), was issued and is effective for fiscal years beginning after November 15, 2007. SFAS 157 determines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. Management is currently evaluating the impact the adoption of SFAS 157 will have on the Funds' financial statement disclosures.

10. Proxy Voting (Unaudited)
A description of the policies and procedures that each Fund's investment adviser and sub-advisers use to vote proxies relating to the Fund's portfolio securities is available, without charge, upon request, by calling 1-888-309-3539, and on the Securities and Exchange Commission's website at http://www.sec.gov.

173

Notes to Financial Statements (Continued)

11. Quarterly Reporting (Unaudited)
The Funds file their complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. The Funds' Forms N-Q are available on the SEC website at http://www.sec.gov. The Funds' Forms N-Q may be reviewed and copied at the SEC's Public Reference Room in Washington D.C. Information on the operation of the SEC's Public Reference Room may be obtained by calling 1-800-SEC-0330.

12. Trustees' Approval of Investment Advisory Contracts (Unaudited)
At a meeting held on May 9, 2007, the Board of Trustees of MML Trust (the "Board"), including the Trustees who are not "interested persons" (as such term is defined in the 1940 Act) of MML Trust, the Adviser or Sub-Advisers (the "Independent Trustees") approved the amended Sub-Advisory Agreement ("Amended Sub-Advisory Agreement") with T. Rowe Price Associates, Inc. ("T. Rowe Price") for the Blue Chip Growth Fund. Under the Amended Sub-Advisory Agreement, a modification would be made to the investment sub-advisory fee, whereby the investment sub-advisory fee would decrease.

In approving the Amended Sub-Advisory Agreement, the Board discussed with Management and considered a wide range of information about, among other things: (i) T. Rowe Price and its personnel with responsibilities for providing services to the Fund; (ii) the terms of the Amended Sub-Advisory Agreement; (iii) the scope and quality of services provided by T. Rowe Price under the Amended Sub-Advisory Agreement; (iv) the fees payable to T. Rowe Price by the Adviser; and (v) T. Rowe Price's practices regarding the selection and compensation of brokers and dealers that execute portfolio transactions for the Fund, and the brokers' and dealers' provision of brokerage and research services to T. Rowe Price.

Based on the foregoing, the Board concluded that (i) the sub-advisory fee amount under the Amended Sub-Advisory Agreement was fair and reasonable; (ii) overall, the Board was satisfied with the nature, extent and quality of services provided, and expected to be provided in the future, under the Amended Sub-Advisory Agreement; and (iii) the terms of the Amended Sub-Advisory Agreement are fair and reasonable with respect to the Fund and are in the best interest of the Fund's shareholders. After carefully considering the information summarized above, the Board, including the Independent Trustees voting separately, unanimously voted to approve the Amended Sub-Advisory Agreement.

Prior to the votes being taken to approve the Amended Sub-Advisory Agreement, the Independent Trustees met separately in executive session to discuss the appropriateness of the contract. In their deliberations with respect to these matters, the Independent Trustees were advised by their independent legal counsel. The Independent Trustees weighed the foregoing matters in light of the advice given to them by their independent legal counsel as to the law applicable to the review of investment advisory contracts. In arriving at a decision, the Board, including the Independent Trustees, did not identify any single matter as all-important or controlling. The foregoing summary does not detail all of the matters considered.

The Amended Sub-Advisory Agreement took effect on November 28, 2007.

At a meeting held on August 7, 2007, the Board, including the Independent Trustees, approved the Advisory Agreements for the Conservative Allocation Fund, Balanced Allocation Fund, Moderate Allocation Fund, Growth Allocation Fund and Aggressive Allocation Fund (the "MML Asset Allocation Funds") subject to approval by the shareholders of each Fund of the respective Advisory Agreement. In preparation for the meeting, the Trustees requested, and the Adviser provided in advance of the meeting, certain materials relevant to the consideration of the Advisory Agreements. The Board also received, in advance of the meeting, memoranda prepared by counsel to the Independent Trustees addressing their duties and responsibilities in approving the Advisory Agreements, including identification of types of information relevant to such consideration.

At the meeting, representatives of the Adviser made an extensive presentation concerning the Advisers' operations and capabilities as well as the investment strategies to be pursued by the MML Asset Allocation Funds.

In approving the Advisory Agreements, the Board considered the materials provided by the Adviser in advance of the Meeting and information discussed with Management at the Meeting relating to the Adviser and the nature, scope and quality of services the Adviser would provide to the Funds. The Board examined the Adviser's ability to provide investment oversight, administrative and shareholders services to each Fund. The Board also considered the experience and qualifications of the personnel of the Adviser that would be performing, or overseeing the performance of, the services to be provided to

174

Notes to Financial Statements (Continued)

each MML Asset Allocation Fund and the needs of each Fund for administrative and shareholder services. Based on the above, the Board concluded that the resources to be devoted by the Adviser were appropriate to fulfill effectively its duties under the Advisory Agreements.

The Board considered a number of factors to be relevant to the interests of shareholders of the MML Asset Allocation Funds. Such factors included (i) the financial condition, stability and business strategy of the Adviser, (ii) the ability of the Adviser with respect to regulatory compliance and the ability to monitor compliance with the investment policies of each MML Asset Allocation Fund, (iii) the profitability of the Adviser, (iv) possible economies of scale, and (v) any conditions affecting the Adviser's future provision of high quality services to the MML Asset Allocation Funds.

Based on the foregoing, the Board determined that (i) the resources to be devoted by the Adviser were appropriate to fulfill effectively its duties under the Advisory Agreements for the MML Asset Allocation Funds, (ii) the anticipated scope and quality of the services to be provided by the Adviser were satisfactory to merit approval of the Advisory Agreements, (iii) the Adviser's projected levels of profitability from its relationship to the MML Asset Allocation Funds were not excessive and that the advisory fees payable under the Advisory Agreements were fair and reasonable, and (iv) the terms of the Advisory Agreements were fair and reasonable with respect to each MML Asset Allocation Fund and were in the best interests of each Fund's shareholders. After carefully considering the information summarized above, the Board, including the Independent Trustees voting separately, unanimously voted to approve the Advisory Agreements.

Prior to the votes being taken to approve the Advisory Agreements, the Independent Trustees met separately in executive session to discuss the appropriateness of such contracts. In their deliberations with respect to these matters, the Independent Trustees were advised by their independent legal counsel. The Independent Trustees weighed the foregoing matters in light of the advice given to them by their independent legal counsel as to the law applicable to the review of investment advisory contracts. In arriving at a decision, the Board, including the Independent Trustees, did not identify any single matter as all-important or controlling. The foregoing summary does not detail all of the matters considered.

The Advisory Agreements took effect on August 31, 2007.

At a meeting held on November 6, 2007, the Board, including the Independent Trustees, approved a new Sub-Advisory Agreement ("New Sub-Advisory Agreement) with AllianceBernstein L.P ("AllianceBernstein") for the Small Cap Value Fund and approved an amended Sub-Advisory Agreement ("Amended Sub-Advisory Agreement") with Legg Mason Capital Management, Inc. ("Legg Mason") for the Concentrated Growth Fund.

After arriving at the decision to add a co-sub-adviser, in addition to Goldman Sachs Asset Management, L.P. ("Goldman Sachs"), to the Small Cap Value Fund, the Trustees determined that it would be appropriate to find another sub-adviser that would complement Goldman Sachs. The sub-adviser should be a stable firm with a strong organization and brand, should have an experienced portfolio manager and should have a track record that represented a successful and consistent approach. After careful consideration, the Trustees determined that AllianceBernstein provided the best opportunity for the Fund.

Under the Amended Sub-Advisory Agreement, a modification would be made to the investment sub-advisory fee for the Concentrated Growth Fund, whereby the fee schedule would include breakpoints based on Aggregate Assets. For the purposes of this Amended Sub-Advisory Agreement, "Aggregate Assets" shall mean the aggregate of (i) the average daily net assets of the Fund determined at the close of the New York Stock Exchange on each day that the Exchange is open for trading, and (ii) the average daily net assets of all other funds or accounts of MassMutual or its affiliates, including other funds registered under the 1940 Act, for which Legg Mason provides investment advisory services, and which have substantially the same investment objectives, policies and investment strategies, determined at the close of the Exchange on each day that the Exchange is open for trading.

In approving the New Sub-Advisory Agreement and the Amended Sub-Advisory Agreement, the Board considered information about, among other things: (i) each Sub-Adviser and its personnel with responsibilities for providing services to the Funds; (ii) the terms of the New Sub-Advisory Agreement and the Amended Sub-Advisory Agreement; (iii) the scope and quality of the services that each Sub-Adviser will provide to the Funds under the respective agreements; (iv) the historical investment

175

Notes to Financial Statements (Continued)

performance track record of each Sub-Adviser, (v) the fees payable to each Sub-Adviser by the Adviser and, with regard to the New Sub-Advisory Agreement, the effect of such fees on the profitability of the Adviser; and (vi) each Sub-Adviser's practices regarding the selection and compensation of brokers and dealers that execute portfolio transactions for the Funds, and the brokers' and dealers' provision of brokerage and research services to each Sub-Adviser.

Based on the foregoing, the Board concluded that (i) with regard to the New Sub-Advisory Agreement, the Adviser's level of profitability from its relationship to the Fund was not excessive, and that the sub-advisory fee amounts under the New Sub-Advisory Agreement and the Amended Sub-Advisory Agreement were fair and reasonable; (ii) overall, the Board was satisfied with the nature, extent and quality of services provided, and expected to be provided in the future, as applicable, under the New Sub-Advisory Agreement and the Amended Sub-Advisory Agreement; and (iii) the terms of the New Sub-Advisory Agreement and the Amended Sub-Advisory Agreement are fair and reasonable with respect to the Funds and are in the best interest of each Fund's shareholders. After carefully considering the information summarized above, the Board, including the Independent Trustees voting separately, unanimously voted to approve the New Sub-Advisory Agreement and th e Amended Sub-Advisory Agreement.

Prior to the votes being taken to approve the New Sub-Advisory Agreement and the Amended Sub-Advisory Agreement, the Independent Trustees met separately in executive session to discuss the appropriateness of such contracts. In their deliberations with respect to these matters, the Independent Trustees were advised by their independent legal counsel. The Independent Trustees weighed the foregoing matters in light of the advice given to them by their independent legal counsel as to the law applicable to the review of investment advisory contracts. In arriving at a decision, the Board, including the Independent Trustees, did not identify any single matter as all-important or controlling. The foregoing summary does not detail all of the matters considered.

The New Sub-Advisory Agreement for the Small Cap Value Fund became effective November 28, 2007. The Amended Sub-Advisory Agreement for the Concentrated Growth Fund became effective on December 17, 2007.

176

Report of Independent Registered Public Accounting Firm

To the Board of Trustees of MML Series Investment Fund and Shareholders of MML Asset Allocation Fund, MML Equity Income Fund, MML Income and Growth Fund, MML Growth and Income Fund, MML Blue Chip Growth Fund, MML Large Cap Growth Fund, MML Concentrated Growth Fund, MML Mid Cap Value Fund, MML Mid Cap Growth Fund, MML Small Cap Value Fund, MML Small Cap Index Fund, MML Global Fund, MML Foreign Fund, MML Conservative Allocation Fund, MML Balanced Allocation Fund, MML Moderate Allocation Fund, MML Growth Allocation Fund, and MML Aggressive Allocation Fund:

We have audited the accompanying statements of assets and liabilities, including the portfolios of investments, of MML Asset Allocation Fund, MML Equity Income Fund, MML Income and Growth Fund, MML Growth and Income Fund, MML Blue Chip Growth Fund, MML Large Cap Growth Fund, MML Concentrated Growth Fund, MML Mid Cap Value Fund, MML Mid Cap Growth Fund, MML Small Cap Value Fund, MML Small Cap Index Fund, MML Global Fund, MML Foreign Fund, MML Conservative Allocation Fund, MML Balanced Allocation Fund, MML Moderate Allocation Fund, MML Growth Allocation Fund, and MML Aggressive Allocation Fund (collectively the "Funds"), eighteen of the funds comprising the MML Series Investment Fund (the "MML Trust"), as of December 31, 2007, and the related statements of operations for the year then ended, the statements of changes in net assets of the two years in the period then ended, and the financial highlights for each of the two years in the period th en ended. These financial statements and financial highlights are the responsibility of the MML Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits.

In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of each of the Funds as of December 31, 2007, the results of their operations for the year then ended, the changes in their net assets for each of the two years in the period then ended, and the financial highlights for each of the two years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.

Deloitte & Touche LLP
Boston, Massachusetts
February 15, 2008

177

Trustees and Officers (Unaudited)

Disinterested
Trustees

Name, Address*,
and Age

Position(s)
Held with
Trust

Term
of Office**
and
Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Trustee

Other
Directorships
Held by Trustee

Richard W. Greene
Age: 72

Chairman and Trustee of MML Trust

Since
1999

Retired.

Trustee (since 1996), MassMutual Select Funds (open-end investment company).

Richard H. Ayers
Age: 65

Trustee of MML Trust

Since
1999

Retired.

Director, Applera Corporation; Trustee (since 1996), MassMutual Select Funds (open-end investment company).

Allan W. Blair
Age: 59

Trustee of MML Trust

Since
2003

Director (since 2001), Future Works, Inc.; Trustee (since 2003), MassMutual Select Funds (open-end investment company).

Mary E. Boland
Age: 68

Trustee of MML Trust

Since
1973

Attorney at Law (since 2004); Attorney at Law (1965-2004), Egan, Flanagan and Cohen, P.C. (law firm), Springfield, MA.

Trustee (since 1994), MassMutual Select Funds (open-end investment company).

R. Alan Hunter, Jr.
Age: 61

Trustee of MML Trust

Since
2003

Retired.

Director (since 2007), Actuant Corporation; Trustee (since 2003), MassMutual Select Funds (open-end investment company).

F. William Marshall, Jr. Age: 65

Trustee of MML Trust

Since
1996

Consultant (since 1999).

Trustee (since 2000), Board II Oppenheimer Funds; Trustee (since 1996), MassMutual Select Funds (open-end investment company).

178

Trustees and Officers (Unaudited) (Continued)

Interested
Trustees

Name, Address*,
and Age

Position(s)
Held with
Trust

Term
of Office**
and
Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Trustee

Other
Directorships
Held by Trustee

Robert E. Joyal
Age: 62

Trustee of MML Trust

Since
2003

Retired; President (2001-2003), Managing Director (2000-2001) Executive Director (1999-2000), David L. Babson & Company Inc.

Frederick C. Castellani Age: 61

Trustee

Vice President of MML Trust

Since
2001
Since
2006

Executive Vice President (since 2001), Senior Vice President (1996-2001), MassMutual.

179

Trustees and Officers (Unaudited) (Continued)

Principal Officers
who are Not
Trustees

Name, Address*,
and Age

Position(s)
Held with
Trust

Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Officer

Richard J. Byrne
Age: 45

President of MML Trust

Since 2007

Nicholas H. Palmerino
Age: 42

Chief Financial Officer and Treasurer of MML Trust

Since 2006

Kristin L. Fafard
Age: 41

Vice President of MML Trust

Since 2005

Philip S. Wellman
Age: 43

Vice President and Chief Compliance Officer of MML Trust

Since 2007

John E. Deitelbaum
Age: 39

Vice President, Secretary and Chief Legal Officer of MML Trust

Since 2006

180

Trustees and Officers (Unaudited) (Continued)

Name, Address*,
and Age

Position(s)
Held with
Trust

Length
of Time
Served

Principal
Occupation(s) During
Past 5 Years

Number of
Portfolios in
Fund
Complex
Overseen by
Officer

Eric H. Wietsma
Age: 41

Vice President of MML Trust

Since 2006

Corporate Vice President (since 2007),Vice President (2005-2007), MassMutual; Vice President (1999-2005), Hartford Life Insurance Company; Vice President (since 2006), MassMutual Select Funds (open-end investment company); Vice President (since 2006), MML Series II Investment Fund (open-end investment company); Vice President (since 2006), MassMutual Premier Funds (open-end investment company).

Stephen J. Brunette
Age: 37

Vice President of MML Trust

Since 2007

Assistant Vice President (since 2007), Director (2006-2007), Investment Consultant (2003-2006), MassMutual; Vice President (since 2007), MML Series II Investment Fund (open-end investment company).

* The address of each Trustee and Principal Officer is the same as that for MML Trust; 1295 State Street, Springfield, Massachusetts 01111.

181

Federal Tax Information (Unaudited)

For corporate shareholders, a portion of the ordinary dividends paid during the Fund's year ended December 31, 2007 qualified for the dividends received deduction, as follows:

Fund Name	Dividends Received Deduction
Asset Allocation Fund		27.32	%
Equity Income Fund		65.90	%
Income & Growth Fund		66.26	%
Growth & Income Fund		50.46	%
Blue Chip Growth Fund		100.00	%
Large Cap Growth Fund		98.67	%
Concentrated Growth Fund		17.03	%
Mid Cap Value Fund		7.95	%
Mid Cap Growth Fund		47.42	%
Small Cap Value Fund		78.11	%
Small Cap Index Fund		53.85	%
Global Fund		27.99	%
Foreign Fund		-
Conservative Allocation Fund		17.54	%
Balanced Allocation Fund		20.69	%
Moderate Allocation Fund		22.23	%
Growth Allocation Fund		26.90	%
Aggressive Allocation Fund		29.09	%

Fund Name	Qualified Dividend Income
Asset Allocation Fund		27.79	%
Equity Income Fund		62.14	%
Income & Growth Fund		60.36	%
Growth & Income Fund		48.46	%
Blue Chip Growth Fund		100.00	%
Large Cap Growth Fund		98.67	%
Concentrated Growth Fund		16.37	%
Mid Cap Value Fund		12.60	%
Mid Cap Growth Fund		51.65	%
Small Cap Value Fund		67.39	%
Small Cap Index Fund		39.85	%
Global Fund		71.73	%
Foreign Fund		53.15	%
Conservative Allocation Fund		19.12	%
Balanced Allocation Fund		22.40	%
Moderate Allocation Fund		24.10	%
Growth Allocation Fund		29.03	%
Aggressive Allocation Fund		31.48	%

182

Other Information (Unaudited)

Fund Expenses December 31, 2007

Expense Examples				The following information is in regards to expenses for the six months ended December 31, 2007: As a shareholder of the Funds, you incur ongoing costs, including management fees and other Fund expenses. These examples are intended to help you understand your ongoing costs (in dollars) of investing in the Funds and to compare these costs with the ongoing costs of investing in other mutual funds. These examples are based on an investment of $1,000 invested for the six months ended December 31, 2007.

Actual Expenses				The four columns of the table below provide information about actual account values and actual expenses. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading entitled "Operating Expenses Incurred" to estimate the expenses you paid on your account during this period.

Hypothetical Example for Comparison Purposes				The last two columns of the table below provide information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only. Therefore, the last two columns of the table are useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds.

	Beginning Value		Annualized Expense Ratio			Ending Value (Based on Actual Returns and Expenses)		Operating Expenses Incurred*		Ending Value (Based on Hypothetical Returns and Expenses)		Operating Expenses Incurred*
Asset Allocation Fund	$	1,000.00		0.57	%	$	964.60	$	2.82	$	1,022.33	$	2.91
Equity Income Fund	$	1,000.00		0.79	%	$	954.70	$	3.89	$	1,021.22	$	4.02
Income & Growth Fund	$	1,000.00		0.71	%	$	920.50	$	3.44	$	1,021.63	$	3.62
Growth & Income Fund	$	1,000.00		0.52	%	$	934.40	$	2.54	$	1,022.58	$	2.65
Blue Chip Growth Fund	$	1,000.00		0.85	%	$	1,035.60	$	4.36	$	1,020.92	$	4.33
Large Cap Growth Fund	$	1,000.00		0.73	%	$	1,061.40	$	3.79	$	1,021.53	$	3.72
Concentrated Growth Fund
Class I	$	1,000.00		0.76	%	$	1,018.70	$	3.87	$	1,021.37	$	3.87
Class II	$	1,000.00		0.66	%	$	1,019.20	$	3.36	$	1,021.88	$	3.36
Mid Cap Value Fund	$	1,000.00		0.89	%	$	891.10	$	4.24	$	1,020.72	$	4.53
Mid Cap Growth Fund	$	1,000.00		0.81	%	$	1,020.60	$	4.13	$	1,021.12	$	4.13
Small Cap Value Fund	$	1,000.00		0.81	%	$	816.10	$	3.71	$	1,021.12	$	4.13
Small Cap Index Fund	$	1,000.00		0.43	%	$	917.20	$	2.08	$	1,023.04	$	2.19

183

Other Information (Unaudited) (Continued)

	Beginning Value		Annualized Expense Ratio			Ending Value (Based on Actual Returns and Expenses)		Operating Expenses Incurred*		Ending Value (Based on Hypothetical Returns and Expenses)		Operating Expenses Incurred*
Global Fund
Class I	$	1,000.00		0.71	%	$	956.60	$	3.50	$	1,021.63	$	3.62
Class II	$	1,000.00		0.61	%	$	957.40	$	3.01	$	1,022.13	$	3.11
Foreign Fund	$	1,000.00		1.00	%	$	1,021.50	$	5.10	$	1,020.16	$	5.09
Conservative Allocation Fund**	$	1,000.00		0.20	%	$	1,030.90	$	0.68	$	1,024.20	$	1.02
Balanced Allocation Fund**	$	1,000.00		0.20	%	$	1,029.60	$	0.68	$	1,024.20	$	1.02
Moderate Allocation Fund**	$	1,000.00		0.20	%	$	1,026.30	$	0.68	$	1,024.20	$	1.02
Growth Allocation Fund**	$	1,000.00		0.20	%	$	1,024.50	$	0.68	$	1,024.20	$	1.02
Aggressive Allocation Fund**	$	1,000.00		0.20	%	$	1,021.50	$	0.68	$	1,024.20	$	1.02

** Actual expenses are calculated using the annualized expense ratio, multiplied by the average account value over the period from inception of the Fund on August 31, 2007, through December 31, 2007, multiplied by the number of days in the inception period and divided by the number of days in the year. Hypothetical expenses are calculated using the annualized expense ratio, multiplied by the average account value for the six months ended December 31, 2007, multiplied by the number of days in the six month period and divided by the number of days in the year.

184

Securities offered through registered representatives of MML Investors Services, Inc., member FINRA and SIPC (www.Þnra.org and www.sipc.org), 1295 State Street, SpringÞeld, MA 01111.

MassMutual Financial Group is a marketing name for Massachusetts Mutual Life Insurance Company (MassMutual) and its afÞliated companies and sales representatives.

L4540_a 208
C:13867-00

Item 2. Code of Ethics.

As of December 31, 2007, the Registrant adopted a Code of Ethics that applies to the Principal Executive Officer and Principal Financial Officer pursuant to the Sarbanes-Oxley Act of 2002. For the year ended December 31, 2007, there were no amendments to a provision of the Code of Ethics. A copy of its Code of Ethics is filed with this Form N-CSR under Item 12(a)(1).

Item 3. Audit Committee Financial Expert.

The Registrant’s Board of Trustees has determined that Richard H. Ayers and R. Alan Hunter, Jr., both members of the Audit Committee, are audit committee financial experts as defined by the Securities and Exchange Commission (the “SEC”). Mr. Ayers and Mr. Hunter are both “independent” as defined by the SEC for purposes of audit committee financial expert determinations.

Item 4. Principal Accountant Fees and Services.

(a)		AUDIT FEES: The aggregate fees billed to the Registrant for professional services rendered by its independent auditors, Deloitte & Touche LLP, for the audit of the Registrant’s annual financial statements for 2007 and 2006 were $495,500 and $138,800, respectively.

(b)		AUDIT RELATED FEES: No such fees were billed to the Registrant by Deloitte & Touche LLP for 2007 or 2006.

(c)		TAX FEES: The aggregate fees billed to the Registrant for professional services rendered by Deloitte & Touche LLP for the review of Form 1120-RIC, Form 8613, excise distribution projections, distribution calculation and reasonable out of pocket expenses for 2007 and 2006 were $130,750 and $8,100, respectively.

(d)		ALL OTHER FEES: No such fees were billed to the Registrant by Deloitte & Touche LLP for 2007 and 2006.

(e)		(1) AUDIT COMMITTEE PRE-APPOVAL POLICY: All services to be performed for the Registrant by Deloitte & Touche LLP must be pre-approved by the audit committee. All services performed during 2007 and 2006 were pre-approved by the committee.

		(2) Not applicable.

(f)		Not applicable.

(g)		The aggregate non-audit fees billed by Deloitte and Touche LLP for services rendered to the Registrant, and the Registrant’s adviser, for the fiscal years 2007 and 2006 were $240,750 and $259,561, respectively.

(h)		Not applicable.

Item 5. Audit Committee of Listed Registrants.

Not applicable to this filing.

Item 6. Schedule of Investments.

Not applicable to this filing.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Not applicable to this filing.

Item 8. Portfolio Managers of Closed-End Management Investment Companies.

Not applicable to this filing.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable to this filing.

Item 10. Submission of Matters to a Vote of Security Holders.

Not applicable to this filing.

Item 11. Controls and Procedures.

(a) The Registrant’s Principal Executive Officer and Principal Financial Officer concluded that the Registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) were effective as of a date within 90 days prior to the filing date of this report (the “Evaluation Date”), based on their evaluation of the effectiveness of the Registrant’s disclosure controls and procedures as of the Evaluation Date.

(b) There were no changes in the Registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d))) that occurred during the Registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Registrant’s internal control over financial reporting.

Item 12. Exhibits.

(a)(1) Code of Ethics (Item 2) is attached.

(a)(2) Certifications of the Principal Executive Officer and Principal Financial Officer of the Registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) are attached hereto as Exhibit 99CERT.

(a)(3) Not applicable to this filing.

(b) Certifications pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 as required by Rule 30a-2(b), under the Investment Company Act of 1940 (17 CFR 270.30a-2(b)), Rule 15d-14(b) under the Securities Exchange Act of 1934 (17 CFR 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) are attached hereto as Exhibit 99.906CERT.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant)		MML Series Investment Fund

By (Signature and Title)			/s/ Richard J. Byrne
			Richard J. Byrne, President and Principal Executive Officer

Date	2/13/08

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By (Signature and Title)		/s/ Richard J. Byrne
		Richard J. Byrne, President and Principal Executive Officer


Date	2/13/08

By (Signature and Title)		/s/ Nicholas H. Palmerino
		Nicholas H. Palmerino, Treasurer and Principal Financial Officer


Date	2/13/08

MML Series Investment Fund N-CSRCertified annual shareholder report (management investment company)

Item 5. Audit Committee of Listed Registrants.

Not applicable to this filing.

Item 6. Schedule of Investments.

Not applicable to this filing.

Not applicable to this filing.

Item 8. Portfolio Managers of Closed-End Management Investment Companies.

Not applicable to this filing.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

Not applicable to this filing.

Not applicable to this filing.