Quantitative Master Series N-CSR Certified annual shareholder report (management investment company)

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: 811-07899 and 811-07855

Name of Fund:   BlackRock Index Funds, Inc.

         ��    BlackRock International Index Fund

              BlackRock Small Cap Index Fund

          Quantitative Master Series LLC

              Master International Index Series

              Master Small Cap Index Series

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: John M. Perlowski, Chief Executive Officer, BlackRock Index Funds, Inc.

      and Quantitative Master Series LLC, 55 East 52^nd Street, New York, NY 10055

Registrants’ telephone number, including area code: (800) 441-7762

Date of fiscal year end: 12/31/2013

Date of reporting period: 12/31/2013

Item 1 – Report to Stockholders

DECEMBER 31, 2013

  ANNUAL REPORT  

BlackRock Index Funds, Inc.

^Ø   BlackRock International Index Fund

^Ø   BlackRock Small Cap Index Fund

Not FDIC Insured • May Lose Value • No Bank Guarantee

Table of Contents

	Page
Dear Shareholder		3
Annual Report:
Fund Summary		4
About Fund Performance		8
Disclosure of Expenses		8
Derivative Financial Instruments		8
Fund Financial Statements:
Statements of Assets and Liabilities		9
Statements of Operations		10
Statements of Changes in Net Assets		11
Fund Financial Highlights		12
Fund Notes to Financial Statements		18
Fund Report of Independent Registered Public Accounting Firm		21
Important Tax Information		21
Series Portfolio Information		22
Series Financial Statements:
Schedules of Investments		23
Statements of Assets and Liabilities		53
Statements of Operations		54
Statements of Changes in Net Assets		55
Series Financial Highlights		56
Series Notes to Financial Statements		57
Series Report of Independent Registered Public Accounting Firm		64
Officers and Directors		65
Additional Information		68
A World-Class Mutual Fund Family		70

2 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Dear Shareholder

Risk assets (such as equities) powered higher in 2013, for the most part unscathed by ongoing political and economic uncertainty. While monetary policy was the main driving force behind the rally in risk assets, it was also the main culprit for the bouts of volatility during the year.

Equity markets rallied right out of the gate in January with cash pouring back in from the sidelines after a potential US fiscal crisis (i.e., the “fiscal cliff”) was averted with a last-minute tax deal. Key indicators signaling modest but broad-based improvements in the world’s major economies and a calming in Europe’s debt troubles fostered an aura of comfort for investors. Global economic momentum slowed in February, however, and the pace of the rally moderated. In the months that followed, US stocks outperformed international stocks, as the US showed greater stability than most other regions. Slow but positive growth was sufficient to support corporate earnings, while uncomfortably high unemployment reinforced expectations that the Federal Reserve would continue its aggressive monetary stimulus program. International markets experienced higher levels of volatility given a resurgence of political instability in Italy, a banking crisis in Cyprus and a generally poor outlook for European economies. Emerging markets significantly lagged the rest of the world as growth in these economies fell short of expectations.

Financial markets were rattled in May when Fed Chairman Bernanke mentioned the possibility of reducing — or “tapering” — the central bank’s asset purchase programs — comments that were widely misinterpreted as signaling an end to the Fed’s zero-interest-rate policy. US Treasury yields rose sharply, triggering a steep sell-off across fixed income markets. (Bond prices move in the opposite direction of yields.) Equity prices also suffered as investors feared the implications of a potential end of a program that had greatly supported the markets. Risk assets rebounded in late June, however, when the Fed’s tone turned more dovish, and improving economic indicators and better corporate earnings helped extend gains through most of the summer.

The fall was a surprisingly positive period for most asset classes as the Fed defied market expectations with its decision to delay tapering. Easing of political tensions that had earlier surfaced in Egypt and Syria and the re-election of Angela Merkel as Chancellor of Germany also boosted investor sentiment. Higher volatility returned in late September when the US Treasury Department warned that the national debt would soon breach its statutory maximum. The ensuing political brinksmanship led to a partial government shutdown, roiling global financial markets through the first half of October, but the rally quickly resumed when politicians engineered a compromise to reopen the government and extend the debt ceiling, at least temporarily.

The remainder of the year was generally positive for stock markets in the developed world, although investors continued to grapple with uncertainty about when and how much the Fed would scale back on stimulus. On the one hand, persistent weak growth and low inflation provided significant latitude for monetary policy decisions and investors were encouraged by dovish comments from Fed Chair-to-be Janet Yellen. On the other hand, US housing and manufacturing reports had begun to signal fundamental improvement in the economy. The long-awaited taper announcement ultimately came in mid-December. The Fed reduced the amount of its monthly asset purchases, but at the same time, extended its time horizon for maintaining low short-term interest rates. Markets reacted positively as this move signaled the Fed’s perception of real improvement in the economy and investors felt relief from the tenacious anxiety that had gripped them throughout the year.

Accommodative monetary policy and the avoidance of major risks made 2013 a strong year for most equity markets. US stocks were the strongest performers for the six- and 12-month periods ended December 31. In contrast, emerging markets were weighed down by uneven growth and structural imbalances. Rising US Treasury yields led to a rare annual loss in 2013 for Treasury bonds and other high-quality fixed income sectors including tax-exempt municipals and investment grade corporate bonds. High yield bonds, to the contrary, generated gains driven by income-oriented investors seeking yield in the low-rate environment. Short-term interest rates remained near zero, keeping yields on money market securities near historical lows.

At BlackRock, we believe investors need to think globally and extend their scope across a broader array of asset classes and be prepared to move freely as market conditions change over time. We encourage you to talk with your financial advisor and visit www.blackrock.com for further insight about investing in today’s world.

Sincerely,

Rob Kapito

President, BlackRock Advisors, LLC

“While monetary policy was the main driving force behind the rally in risk assets, it was also the main culprit for the bouts of volatility during the year.”

Rob Kapito

President, BlackRock Advisors, LLC

Total Returns as of December 31, 2013
	6-month			12-month
US large cap equities (S&P 500® Index)		16.31	%		32.39	%
US small cap equities (Russell 2000® Index)		19.82			38.82
International equities (MSCI Europe, Australasia, Far East Index)		17.94			22.78
Emerging market equities (MSCI Emerging Markets Index)		7.70			(2.60	)
3-month Treasury bill (BofA Merrill Lynch 3-Month US Treasury Bill Index)		0.03			0.07
US Treasury securities (BofA Merrill Lynch 10-Year US Treasury Index)		(3.10	)		(7.83	)
US investment grade bonds (Barclays US Aggregate Bond Index)		0.43			(2.02	)
Tax-exempt municipal bonds (S&P Municipal Bond Index)		0.00			(2.55	)
US high yield bonds (Barclays US Corporate High Yield 2% Issuer Capped Index)		5.94			7.44
Past performance is no guarantee of future results. Index performance is shown for illustrative purposes only. You cannot invest directly in an index.

THIS PAGE NOT PART OF YOUR FUND REPORT 3

Fund Summary as of December 31, 2013 BlackRock International Index Fund

Investment Objective

BlackRock International Index Fund’s (the “Fund”) investment objective is to match the performance of the MSCI EAFE Index (Europe, Australasia, Far East) (the “MSCI EAFE Index”) in U.S. dollars with net dividends as closely as possible before the deduction of Fund expenses.

Portfolio Management Commentary

How did the Fund perform?

Ÿ For the 12 months ended December 31, 2013, the Fund’s Institutional Shares returned 21.52%, Investor A Shares returned 21.20% and Class K Shares returned 21.57%. The benchmark MSCI EAFE Index returned 22.78% for the same period. The MSCI EAFE Index is a free float-adjusted, market capitalization-weighted index designed to measure equity performance of developed markets, excluding the United States and Canada.

Ÿ Returns for the Fund’s respective share classes differ from the benchmark index based on individual share-class expenses. The Fund invests all of its assets in Master International Index Series (the “Series”), a series of Quantitative Master Series LLC.

Describe the market environment.

Ÿ International equity markets began 2013 with a powerful relief rally after the United States averted the worst of its potential fiscal crisis with a last-minute tax deal. The rally softened in February, however, as global economic momentum slowed. Later in the first quarter, a stalemate presidential election in Italy and a severe banking crisis in Cyprus reminded investors that political and financial instability in Europe continued to pose risks. The ascent of equities persevered as increased global liquidity kept interest rates low and investors turned to riskier asset classes in search of yield.

Ÿ As the year progressed, the direction of equity markets became increasingly dominated by speculation around the future of monetary policy in response to signals from central banks, particularly the US Federal Reserve. Sluggish global growth, ironically, was often conducive to positive stock market performance as weak economic data reinforced investors’ expectations that major central banks would maintain their accommodative stance. Additionally, the modest pace of economic growth contributed to corporate profit margins as the global recovery was strong enough to support revenues while nearly stagnant wage growth kept costs low.

Ÿ After peaking in late May, equity markets around the world recoiled when Fed Chairman Bernanke mentioned the possibility of gradually reducing (or “tapering”) monetary stimulus before the end of 2013. Volatility picked up considerably as many investors misinterpreted the Fed’s remarks as signaling the end of low short-term interest rates. However, equities staged a swift mid-summer rebound when the Fed’s tone turned more dovish. Later in the third quarter, mixed economic data drove high volatility as it made investors increasingly anxious about when and how much the Fed would scale back on its monthly asset purchase program. Also concerning was the escalation of the revolution in Egypt and the civil war in Syria, events that fueled higher oil prices, an additional headwind for global growth.

Ÿ September brought another sharp rally as the Fed defied market expectations with its decision to delay tapering its asset purchase program. On the geopolitical front, the turmoil in Egypt and Syria subsided and the re-election of Angela Merkel as Chancellor of Germany was welcomed as a continuation of the status quo. The equity market advance was interrupted again in late September when the US teetered on breaching the national debt ceiling and political brinksmanship led to a partial government shutdown. The rally quickly resumed in mid-October when politicians engineered a compromise to reopen the government and extend the debt ceiling until early 2014.

Ÿ As economic indicators improved later in the fall, investors around the world grappled with rising uncertainty around the timing of the anticipated Fed taper. This anxiety was ultimately relieved when the central bank announced the commencement of tapering in mid-December. Investors reacted positively to this policy move as it signaled the Fed’s perception of real improvement in US growth. Sentiment was also buoyed by the extension of the Fed’s expected time horizon for maintaining low short-term interest rates.

Ÿ Equity markets in all of the developed countries represented in the MSCI EAFE Index moved higher for the year 2013 (in US dollar terms). Markets in Finland (+46.04%) and Ireland (+41.15%) posted the largest gains in the index, followed by Germany (+31.37%), which has substantial representation in the index composition. Japanese equities (+27.16%) climbed higher as a weakening yen benefited the nation’s exporters, which comprise a large portion of the Japanese stock market. (In local currency terms, Japanese stocks soared +54.58%.) Japanese equities are among the heavier country weightings in the MSCI EAFE Index, as are Swiss (+26.61%), French (+26.33%) and UK equities (+20.67%).

Describe recent portfolio activity.

Ÿ During the period, as changes were made to the composition of the MSCI EAFE Index, the Series purchased and sold securities to maintain its objective of replicating the risks and return of the benchmark index.

Describe portfolio positioning at period end.

Ÿ The Series remains positioned to match the risk characteristics of its benchmark index, irrespective of the future direction of international markets.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.

4 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

BlackRock International Index Fund

Total Return Based on a $10,000 Investment

¹  Assuming transaction costs and other operating expenses, including administration fees, if any.

²  The Fund invests all of its assets in the Series. The Series invests in a statistically selected sample of equity securities included in the MSCI EAFE Index and in derivative instruments linked to the MSCI EAFE Index.

³  This unmanaged index is a free-float adjusted, market capitalization-weighted index designed to measure equity performance of developed markets, excluding the United States and Canada.

Performance Summary for the Period Ended December 31, 2013

	6-Month Total Returns			Average Annual Total Returns4
				1 Year			5 Years			10 Years
Institutional		17.69	%		21.52	%		11.65	%		6.57	%
Investor A		17.56			21.20			11.36			6.29
Class K5		17.74			21.57			11.70			6.62
MSCI EAFE Index		17.94			22.78			12.44			6.91

⁴  Average annual total returns reflect reductions for service fees, if any. See “About Fund Performance” on page 8 for a detailed description of share classes, including any related fees.

⁵  Class K Shares commenced operations on March 31, 2011.

Past performance is not indicative of future results.

Expense Example

	Actual						Hypothetical7
	Beginning Account Value July 1, 2013		Ending Account Value December 31, 2013		Expenses Paid During the Period6		Beginning Account Value July 1, 2013		Ending Account Value December 31, 2013		Expenses Paid During the Period6		Annualized Expense Ratio
Institutional	$	1,000.00	$	1,176.90	$	1.98	$	1,000.00	$	1,023.39	$	1.84		0.35	%
Investor A	$	1,000.00	$	1,175.60	$	3.35	$	1,000.00	$	1,022.13	$	3.11		0.60	%
Class K	$	1,000.00	$	1,177.40	$	1.70	$	1,000.00	$	1,023.64	$	1.58		0.30	%

⁶  For each class of the Fund, expenses are equal to the annualized net expense ratio for the class, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period shown). Because the Fund invests all of its assets in the Series, the expense example reflects the net expenses of both the Fund and the Series.

⁷  Hypothetical 5% return before expenses is calculated by pro rating the number of days in the most recent fiscal half year divided by 365.

See “Disclosure of Expenses” on page 8 for further information on how expenses were calculated.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 5

Fund Summary as of December 31, 2013 BlackRock Small Cap Index Fund

Investment Objective

BlackRock Small Cap Index Fund’s (the “Fund”), a series of BlackRock Index Funds, Inc. (the “Corporation”), investment objective is to match the performance of the Russell 2000^® Index (the “Russell 2000^®”) as closely as possible before the deduction of Fund expenses.

Portfolio Management Commentary

How did the Fund perform?

Ÿ For the 12 months ended December 31, 2013, the Fund’s Institutional Shares returned 39.14%, Investor A Shares returned 38.72% and Class K Shares returned 39.14%. The benchmark Russell 2000^® Index returned 38.82% for the same period.

Ÿ Returns for the Fund’s respective share classes differ from the benchmark index based on individual share-class expenses. The Fund invests all of its assets in Master Small Cap Index Series (the “Series”), a series of Quantitative Master Series LLC.

Describe the market environment.

Ÿ US equity markets began 2013 with a powerful relief rally after the United States averted the worst of its potential fiscal crisis with a last-minute tax deal. The rally softened in February, however, as economic momentum slowed. Later in the first quarter, a stalemate presidential election in Italy and a severe banking crisis in Cyprus reminded investors that political and financial instability in Europe continued to pose risks. The ascent of equities persevered as increased global liquidity kept interest rates low and investors turned to riskier asset classes in search of yield.

Ÿ As the year progressed, the direction of stock markets became increasingly dominated by speculation around the future of monetary policy. Sluggish US growth, ironically, was often conducive to positive stock market performance as weak economic data reinforced investors’ expectations that the US Federal Reserve would maintain its accommodative stance. Additionally, the modest pace of economic growth contributed to corporate profit margins as the US recovery was strong enough to support revenues while nearly stagnant wage growth kept costs low.

Ÿ After peaking in late May, stock markets recoiled when Fed Chairman Bernanke mentioned the possibility of gradually reducing (or “tapering”) monetary stimulus before the end of 2013. Volatility picked up considerably as many investors misinterpreted the Fed’s remarks as signaling the end of low short-term interest rates. However, equities staged a swift mid-summer rebound when the Fed’s tone turned more dovish. Later in the third quarter, mixed economic data drove high volatility as it made investors increasingly anxious about when and how much the Fed would scale back on its monthly asset purchase program.

Ÿ September brought another sharp rally as the Fed defied market expectations with its decision to delay tapering its asset purchases. But the equity market advance was interrupted again in late September when the US teetered on breaching the national debt ceiling and political brinksmanship led to a partial government shutdown. The rally quickly resumed in mid-October when politicians engineered a compromise to reopen the government and extend the debt ceiling until early 2014.

Ÿ As economic indicators improved later in the fall, investors grappled with rising uncertainty around the timing of the anticipated Fed taper. This anxiety was ultimately relieved when the central bank announced the commencement of tapering in mid-December. Investors reacted positively to this policy move as it signaled the Fed’s perception of real improvement in US growth. Sentiment was also buoyed by the extension of the Fed’s expected time horizon for maintaining low short-term interest rates.

Describe recent portfolio activity.

Ÿ During the period, as changes were made to the composition of the Russell 2000^® Index, the Series purchased and sold securities to maintain its objective of replicating the risks and return of the benchmark index.

Describe portfolio positioning at period end.

Ÿ The Series remains positioned to match the risk characteristics of its benchmark index, irrespective of the market’s future direction.

The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.

6 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

BlackRock Small Cap Index Fund

Total Return Based on a $10,000 Investment

¹  Assuming transaction costs and other operating expenses, including administration fees, if any.

²  The Fund invests all of its assets in the Series. The Series may invest in a statistically selected sample of the stocks included in the Russell 2000^® Index and in derivative instruments linked to the Russell 2000^® Index.

³  This unmanaged index is comprised of approximately 2,000 smaller-capitalization common stocks from various industrial sectors.

Performance Summary for the Period Ended December 31, 2013

	6-Month Total Returns			Average Annual Total Returns4
				1 Year			5 Years			10 Years
Institutional		19.81	%		39.14	%		19.89	%		8.72	%
Investor A		19.63			38.72			19.59			8.44
Class K5		19.83			39.14			19.97			8.78
Russell 2000® Index		19.82			38.82			20.08			9.07

⁴  Average annual total returns reflect reductions for service fees, if any. See “About Fund Performance” on page 8 for a detailed description of share classes, including related fees, if any.

⁵  Class K commenced operations on March 31, 2011.

    Past performance is not indicative of future results.

Expense Example

	Actual						Hypothetical7
	Beginning Account Value July 1, 2013		Ending Account Value December 31, 2013		Expenses Paid During the Period6		Beginning Account Value July 1, 2013		Ending Account Value December 31, 2013		Expenses Paid During the Period6		Annualized Expense Ratio
Institutional	$	1,000.00	$	1,198.10	$	1.66	$	1,000.00	$	1,023.69	$	1.53		0.30	%
Investor A	$	1,000.00	$	1,196.30	$	3.04	$	1,000.00	$	1,022.43	$	2.80		0.55	%
Class K	$	1,000.00	$	1,198.30	$	1.39	$	1,000.00	$	1,023.95	$	1.28		0.25	%

⁶  For each class of the Fund, expenses are equal to the annualized net expense ratio for the class, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period shown). Because the Fund invests all of its assets in the Series, the expense example reflects the net expenses of both the Fund and the Series.

⁷  Hypothetical 5% annual return before expenses is calculated by pro rating the number of days in the most recent fiscal half year divided by 365.

    See “Disclosure of Expenses” on page 8 for further information on how expenses were calculated.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 7

About Fund Performance

Ÿ Institutional and Class K Shares are not subject to any sales charge. These shares bear no ongoing distribution or service fees and are available only to certain eligible investors. Prior to March 31, 2011, Class K Shares’ performance results are those of Institutional Shares restated to reflect Class K Shares’ fees.

Ÿ Investor A Shares are not subject to any sales charge and bear no ongoing distribution fee. These shares are subject to an ongoing service fee of 0.25% per year.

Performance information reflects past performance and does not guarantee future results. Current performance may be lower or higher than the performance data quoted. Refer to www.blackrock.com/funds to obtain performance data current to the most recent month end. Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Figures shown in the performance tables on the previous pages assume reinvestment of all dividends and capital gain distributions, if any, at net asset value (“NAV”) on the ex-dividend date. Investment return and principal value of shares will fluctuate so that shares, when redeemed, may be worth more or less than their original cost. Dividends paid to each class of shares will vary because of the different levels of service and transfer agency fees applicable to each class, which are deducted from the income available to be paid to shareholders. The Funds’ administrator waived and/or reimbursed a portion of the Funds’ fee expenses. Without such waiver and/or reimbursement, the Funds’ performance would have been lower.

Disclosure of Expenses

Shareholders of these Funds may incur the following charges: (a) transactional expenses, such as sales charges; and (b) operating expenses, including administration fees, service fees, including 12b-1 fees, and other Fund expenses. The expense examples on the previous pages (which are based on a hypothetical investment of $1,000 invested on July 1, 2013 and held through December 31, 2013) are intended to assist shareholders both in calculating expenses based on an investment in each Fund and in comparing these expenses with similar costs of investing in other mutual funds.

The expense examples provide information about actual account values and actual expenses. In order to estimate the expenses a shareholder paid during the period covered by this report, shareholders can divide their account value by $1,000 and then multiply the result by the number corresponding to their Fund and share class under the heading entitled “Expenses Paid During the Period.”

The expense examples also provide information about hypothetical account values and hypothetical expenses based on a Fund’s actual expense ratio and an assumed rate of return of 5% per year before expenses. In order to assist shareholders in comparing the ongoing expenses of investing in these Funds and other funds, compare the 5% hypothetical examples with the 5% hypothetical examples that appear in other funds’ shareholder reports.

The expenses shown in the expense examples are intended to highlight shareholders’ ongoing costs only and do not reflect any transactional expenses, such as sales charges, if any. Therefore, the hypothetical examples are useful in comparing ongoing expenses only, and will not help shareholders determine the relative total expenses of owning different funds. If these transactional expenses were included, shareholder expenses would have been higher.

Derivative Financial Instruments

The Series may invest in various derivative financial instruments, including financial futures contracts and foreign currency exchange contracts, as specified in Note 4 of the Series’ Notes to Financial Statements, which may constitute forms of economic leverage. Such derivative financial instruments are used to obtain exposure to an index and/or market without owning or taking physical custody of securities or to hedge market, foreign currency exchange rate and/or equity risks. Derivative financial instruments involve risks, including the imperfect correlation between the value of a derivative financial instrument and the underlying asset, possible default of the counterparty to the transaction or illiquidity of the derivative financial instrument. The Series’ ability to use a derivative financial instrument successfully depends on the investment advisor’s ability to predict pertinent market movements accurately, which cannot be assured. The use of derivative financial instruments may result in losses greater than if they had not been used, may require the Series to sell or purchase portfolio investments at inopportune times or for distressed values, may limit the amount of appreciation the Series can realize on an investment, may result in lower dividends paid to shareholders or may cause the Series to hold an investment that it might otherwise sell. The Series’ investments in these instruments are discussed in detail in the Series’ Notes to Financial Statements.

8 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Statements of Assets and Liabilities

December 31, 2013	BlackRock International Index Fund			BlackRock Small Cap Index Fund
Assets
Investments at value — from Master International Index Series and Master Small Cap Index Series (each, a “Series”, respectively)1	$	382,920,970		$	145,074,441
Capital shares sold receivable		884,832			110,406
Withdrawals receivable from the Series		305,652			311,754
Prepaid expenses		28,627			24,698
Total assets		384,140,081			145,521,299
Liabilities
Capital shares redeemed payable		1,190,484			422,160
Administration fees payable		52,600			20,198
Service fees payable		63,743			17,178
Officer’s fees payable		37			12
Other accrued expenses payable		46,623			40,752
Total liabilities		1,353,487			500,300
Net Assets	$	382,786,594		$	145,020,999
Net Assets Consist of
Paid-in capital	$	344,690,376		$	105,103,964
Undistributed (distributions in excess) of net investment income		(2,082,337	)		148,170
Accumulated net realized loss allocated from the Series		(51,741,286	)		(2,788,856	)
Net unrealized appreciation/depreciation allocated from the Series		91,919,841			42,557,721
Net Assets	$	382,786,594		$	145,020,999
1 Investments at cost	$	291,001,129		$	102,516,720
Net Asset Value
Institutional:
Net assets	$	71,826,094		$	60,706,774
Shares outstanding2		5,478,589			3,467,681
Net asset value	$	13.11		$	17.51
Investor A:
Net assets	$	308,624,184		$	83,117,896
Shares outstanding2		23,705,844			4,744,534
Net asset value	$	13.02		$	17.52
Class K:
Net assets	$	2,336,316		$	1,196,329
Shares outstanding2		178,149			68,262
Net asset value	$	13.11		$	17.53
2 125 million shares authorized, $0.0001 par value.

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	9

Statements of Operations

Year Ended December 31, 2013	BlackRock International Index Fund			BlackRock Small Cap Index Fund
Investment Income
Income		—		$	256,321
Net investment income allocated from the Series:
Dividends — unaffiliated	$	10,500,015			1,566,334
Foreign taxes withheld		(882,712	)		(1,799	)
Securities lending — affiliated — net		4,273			182,044
Other income — affiliated		119,156			26,819
Dividends — affiliated		783			19,028
Expenses		(216,900	)		(78,468	)
Fees waived		694			5,064
Total income		9,525,309			1,975,343
Fund Expenses
Administration		777,858			339,586
Service — Investor A		662,305			162,376
Transfer agent — Institutional		32,966			29,380
Transfer agent — Investor A		246,144			51,036
Transfer agent — Class K		220			350
Registration		47,583			50,713
Professional		36,379			34,441
Printing		34,763			18,396
Officer		99			29
Miscellaneous		10,865			6,699
Total expenses		1,849,182			693,006
Less administration fees waived		(151,319	)		(230,406	)
Less transfer agent fees waived and/or reimbursed — class specific		(119,781	)		(26,105	)
Total expenses after fees waived and/or reimbursed		1,578,082			436,495
Net investment income		7,947,227			1,538,848
Realized and Unrealized Gain (Loss) Allocated from the Series
Net realized gain (loss) from investments, financial futures contracts and foreign currency transactions		(3,186,390	)		9,238,334
Net change in unrealized appreciation/depreciation on investments, financial futures contracts and foreign currency translations		58,864,584			27,192,380
Total realized and unrealized gain		55,678,194			36,430,714
Net Increase in Net Assets Resulting from Operations	$	63,625,421		$	37,969,562

See Notes to Financial Statements.
10	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013

Statements of Changes in Net Assets

	BlackRock International Index Fund						BlackRock Small Cap Index Fund
	Year Ended December 31,						Year Ended December 31,
Increase (Decrease) in Net Assets:	2013			2012			2013			2012
Operations
Net investment income	$	7,947,227		$	7,437,673		$	1,538,848		$	1,578,077
Net realized gain (loss)		(3,186,390	)		(20,249,413	)		9,238,334			6,203,776
Net change in unrealized appreciation/depreciation		58,864,584			56,355,838			27,192,380			6,639,561
Net increase in net assets resulting from operations		63,625,421			43,544,098			37,969,562			14,421,414
Dividends and Distributions to Shareholders From1
Net investment income:
Institutional		(1,625,236	)		(1,661,118	)		(637,619	)		(1,228,601	)
Investor A		(6,601,334	)		(6,510,024	)		(706,766	)		(1,136,281	)
Class K		(54,078	)		(21,576	)		(11,944	)		(1,125	)
Net realized gain:
Institutional		—			—			(1,093,818	)		—
Investor A		—			—			(1,553,975	)		—
Class K		—			—			(21,681	)		—
Decrease in net assets resulting from dividends and distributions to shareholders		(8,280,648	)		(8,192,718	)		(4,025,803	)		(2,366,007	)
Capital Share Transactions
Net increase (decrease) in net assets derived from capital share transactions		50,389,204			3,246,488			17,405,626			(13,497,292	)
Net Assets
Total increase (decrease) in net assets		105,733,977			38,597,868			51,349,385			(1,441,885	)
Beginning of year		277,052,617			238,454,749			93,671,614			95,113,499
End of year	$	382,786,594		$	277,052,617		$	145,020,999		$	93,671,614
Undistributed (distributions in excess of) net investment income, end of year	$	(2,082,337	)	$	(1,509,001	)	$	148,170		$	(42,220	)

¹ Determined in accordance with federal income tax regulations.

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	11

Financial Highlights BlackRock International Index Fund

	Institutional
	Year Ended December 31,
	2013			2012			2011			2010			2009
Per Share Operating Performance
Net asset value, beginning of year	$	11.06		$	9.63		$	11.42		$	10.97		$	8.75
Net investment income1		0.32			0.33			0.35			0.25			0.23
Net realized and unrealized gain (loss)		2.04			1.45			(1.79	)2		0.53	2		2.25	2
Net increase (decrease) from investment operations		2.36			1.78			(1.44	)		0.78			2.48
Dividends from net investment income3		(0.31	)		(0.35	)		(0.35	)		(0.33	)		(0.26	)
Net asset value, end of year	$	13.11		$	11.06		$	9.63		$	11.42		$	10.97
Total Investment Return4
Based on net asset value		21.52%			18.58%			(12.55)%			7.26%			28.38%
Ratios to Average Net Assets5
Total expenses		0.40%	6		0.42%	6		0.44%	6		0.47%			0.54%
Total expenses after fees waived and/or reimbursed		0.35%	6		0.34%	6		0.35%	6		0.46%			0.54%
Net investment income		2.64%	6		3.22%	6		3.14%	6		2.35%			2.43%
Supplemental Data
Net assets, end of year (000)	$	71,826		$	52,589		$	70,169		$	112,145		$	89,889
Portfolio turnover of the Series		8%			21%			6%			8%			30%

¹ Based on average shares outstanding.

² Includes redemption fees, which are less than $0.005 per share.

³ Determined in accordance with federal income tax regulations.

⁴ Where applicable, assumes the reinvestment of dividends and distributions.

⁵ Includes the Fund’s share of the Series’ allocated expenses and/or net investment income.

⁶ Includes the Fund’s share of the Series’ allocated fees waived of less than 0.01%.

See Notes to Financial Statements.
12	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013

Financial Highlights (continued) BlackRock International Index Fund

	Investor A
	Year Ended December 31,
	2013			2012			2011			2010			2009
Per Share Operating Performance
Net asset value, beginning of year	$	10.99		$	9.57		$	11.36		$	10.91		$	8.71
Net investment income1		0.29			0.30			0.31			0.23			0.21
Net realized and unrealized gain (loss)		2.02			1.45			(1.77	)2		0.52	2		2.23	2
Net increase (decrease) from investment operations		2.31			1.75			(1.46	)		0.75			2.44
Dividends from net investment income3		(0.28	)		(0.33	)		(0.33	)		(0.30	)		(0.24	)
Net asset value, end of year	$	13.02		$	10.99		$	9.57		$	11.36		$	10.91
Total Investment Return4
Based on net asset value		21.20%			18.33%			(12.84)%			7.02%			28.00%
Ratios to Average Net Assets5
Total expenses		0.69%	6		0.69%	6		0.70%	6		0.74%			0.79%
Total expenses after fees waived and/or reimbursed		0.60%	6		0.60%	6		0.60%	6		0.73%			0.79%
Net investment income		2.41%	6		2.90%	6		2.84%	6		2.16%			2.27%
Supplemental Data
Net assets, end of year (000)	$	308,624		$	223,754		$	168,266		$	163,033		$	160,964
Portfolio turnover of the Series		8%			21%			6%			8%			30%

¹ Based on average shares outstanding.

² Includes redemption fees, which are less than $0.005 per share.

³ Determined in accordance with federal income tax regulations.

⁴ Where applicable, assumes the reinvestment of dividends and distributions.

⁵ Includes the Fund’s share of the Series’ allocated expenses and/or net investment income.

⁶ Includes the Fund’s share of the Series’ allocated fees waived of less than 0.01%.

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	13

Financial Highlights (concluded) BlackRock International Index Fund

	Class K
	Year Ended December 31,						Period March 31, 20111 to December 31, 2011
	2013			2012
Per Share Operating Performance
Net asset value, beginning of period	$	11.06		$	9.63		$	11.80
Net investment income2		0.28			0.22			0.26
Net realized and unrealized gain (loss)		2.09			1.57			(2.08	)
Net increase (decrease) from investment operations		2.37			1.79			(1.82	)
Dividends from net investment income3		(0.32	)		(0.36	)		(0.35	)
Net asset value, end of period	$	13.11		$	11.06		$	9.63
Total Investment Return4
Based on net asset value		21.57%			18.65%			(15.38	)%5
Ratios to Average Net Assets6,7
Total expenses		0.36%			0.33%			0.48%	8
Total expenses after fees waived and/or reimbursed		0.30%			0.29%			0.30%	8
Net investment income		2.29%			2.11%			3.27%	8
Supplemental Data
Net assets, end of period (000)	$	2,336		$	710		$	20
Portfolio turnover of the Series		8%			21%			6%

¹ Commencement of operations.

² Based on average shares outstanding.

³ Determined in accordance with federal income tax regulations.

⁴ Where applicable, assumes the reinvestment of dividends and distributions.

⁵ Aggregate total investment return.

⁶ Includes the Fund’s share of the Series’ allocated expenses and/or net investment income.

⁷ Includes the Fund’s share of the Series’ allocated fees waived of less than 0.01%.

⁸ Annualized.

See Notes to Financial Statements.
14	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013

Financial Highlights BlackRock Small Cap Index Fund

	Institutional
	Year Ended December 31,
	2013			2012			2011			2010			2009
Per Share Operating Performance
Net asset value, beginning of year	$	12.99		$	11.51		$	12.21		$	9.70		$	7.71
Net investment income1		0.22			0.24			0.14			0.08			0.07
Net realized and unrealized gain (loss)		4.83			1.61			(0.69	)2		2.51	2		1.98	2
Net increase (decrease) from investment operations		5.05			1.85			(0.55	)		2.59			2.05
Dividends and distributions from:3
Net investment income		(0.19	)		(0.37	)		(0.15	)		(0.08	)		(0.06	)
Net realized gain		(0.34	)		—			—			—			—
Total dividends and distributions		(0.53	)		(0.37	)		(0.15	)		(0.08	)		(0.06	)
Net asset value, end of year	$	17.51		$	12.99		$	11.51		$	12.21		$	9.70
Total Investment Return4
Based on net asset value		39.14%			16.10%			(4.49	)%		26.77%			26.67%
Ratios to Average Net Assets5
Total expenses		0.51%	6		0.60%	6		0.61%	6		0.57%			0.56%
Total expenses after fees waived and/or reimbursed		0.29%	6		0.28%	6		0.30%	6		0.52%			0.56%
Net investment income		1.45%	6		1.88%	6		1.14%	6		0.80%			0.85%
Supplemental Data
Net assets, end of year (000)	$	60,707		$	44,328		$	49,829		$	71,443		$	55,744
Portfolio turnover of the Series		22%			68%			31%			42%			43%

¹ Based on average shares outstanding.

² Includes redemption fees, which are less than $0.005 per share.

³ Determined in accordance with federal income tax regulations.

⁴ Where applicable, assumes the reinvestment of dividends and distributions.

⁵ Includes the Fund’s share of the Series’ allocated expenses and/or net investment income.

⁶ Includes the Fund’s share of the Series’ allocated fees waived of less than 0.01%.

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	15

Financial Highlights (continued) BlackRock Small Cap Index Fund

	Investor A
	Year Ended December 31,
	2013			2012			2011			2010			2009
Per Share Operating Performance
Net asset value, beginning of year	$	13.01		$	11.51		$	12.21		$	9.71		$	7.72
Net investment income1		0.19			0.21			0.11			0.06			0.05
Net realized and unrealized gain (loss)		4.82			1.62			(0.70	)		2.50	2		1.98	2
Net increase (decrease) from investment operations		5.01			1.83			(0.59	)		2.56			2.03
Dividends and distributions from:3
Net investment income		(0.16	)		(0.33	)		(0.11	)		(0.06	)		(0.04	)
Net realized gain		(0.34	)		—			—			—			—
Total dividends and distributions		(0.50	)		(0.33	)		(0.11	)		(0.06	)		(0.04	)
Net asset value, end of year	$	17.52		$	13.01		$	11.51		$	12.21		$	9.71
Total Investment Return4
Based on net asset value		38.72%			15.96%			(4.76	)%		26.35%			26.36%
Ratios to Average Net Assets5
Total expenses		0.77%	6		0.88%	6		0.88%	6		0.80%			0.82%
Total expenses after fees waived and/or reimbursed		0.55%	6		0.55%	6		0.55%	6		0.78%			0.82%
Net investment income		1.20%	6		1.64%	6		0.88%	6		0.53%			0.59%
Supplemental Data
Net assets, end of year (000)	$	83,118		$	49,303		$	45,263		$	47,252		$	38,340
Portfolio turnover of the Series		22%			68%			31%			42%			43%

¹ Based on average shares outstanding.

² Includes redemption fees, which are less than $0.005 per share.

³ Determined in accordance with federal income tax regulations.

⁴ Where applicable, assumes the reinvestment of dividends and distributions.

⁵ Includes the Fund’s share of the Series’ allocated expenses and/or net investment income.

⁶ Includes the Fund’s share of the Series’ allocated fees waived of less than 0.01%.

See Notes to Financial Statements.
16	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013

Financial Highlights (concluded) BlackRock Small Cap Index Fund

	Class K
	Year Ended December 31,						Period March 31, 20111 to December 31, 2011
	2013			2012
Per Share Operating Performance
Net asset value, beginning of period	$	13.01		$	11.51		$	13.17
Net investment income2		0.25			0.25			0.11
Net realized and unrealized gain (loss)		4.81			1.62			(1.62	)
Net increase (decrease) from investment operations		5.06			1.87			(1.51	)
Dividends and distributions from:3
Net investment income		(0.20	)		(0.37	)		(0.15	)
Net realized gain		(0.34	)		—			—
Total dividends and distributions		(0.54	)		(0.37	)		(0.15	)
Net asset value, end of period	$	17.53		$	13.01		$	11.51
Total Investment Return4
Based on net asset value		39.14%			16.30%			(11.42)%	5
Ratios to Average Net Assets6,7
Total expenses		0.49%			0.68%			0.68%	8
Total expenses after fees waived and/or reimbursed		0.25%			0.25%			0.25%	8
Net investment income		1.57%			1.99%			1.28%	8
Supplemental Data
Net assets, end of period (000)	$	1,196		$	40		$	22
Portfolio turnover of the Series		22%			68%			31%

¹ Commencement of operations.

² Based on average shares outstanding.

³ Determined in accordance with federal income tax regulations.

⁴ Where applicable, assumes the reinvestment of dividends and distributions.

⁵ Aggregate total investment return.

⁶ Includes the Fund’s share of the Series’ allocated expenses and/or net investment income.

⁷ Includes the Fund’s share of the Series’ allocated fees waived of less than 0.01%.

⁸ Annualized.

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	17

Notes to Financial Statements BlackRock Index Funds, Inc.

1. Organization:

BlackRock International Index Fund (“International Index”) and BlackRock Small Cap Index Fund (“Small Cap Index”) (collectively, “the “Funds” or individually, a “Fund”), are a series of BlackRock Index Funds, Inc. (the “Corporation”), which is registered under the Investment Company Act of 1940, as amended (the “1940 Act”), as an open-end management investment company. The Corporation is organized as a Maryland corporation. Each Fund is classified as diversified. The Funds seek to achieve their investment objectives by investing all of their assets in Master International Index Series (“Master International Index”) and Master Small Cap Index Series (“Master Small Cap Index”), respectively (collectively, the “Series”, or individually, a “Series”) of Quantitative Master Series LLC (the “Master LLC”), an affiliate of the Funds, each of which has the same investment objective and strategies as the corresponding Fund. The value of the Fund’s investment in the applicable Series reflects the Fund’s proportionate interest in the net assets of the Series. The performance of the Funds is directly affected by the performance of the Series. The percentages of Master International Index and Master Small Cap Index owned by International Index and Small Cap Index at December 31, 2013 were 37.7%, and 16.9%, respectively. As such the financial statements of the Series, including the Schedules of Investments, are included elsewhere in this report and should be read in conjunction with the Funds’ financial statements. The Funds offer multiple classes of shares. Institutional Shares and Class K Shares are sold without a sales charge and only to certain eligible investors. Investor A Shares are generally sold without a front-end sales charge. All classes of shares have identical voting, dividend, liquidation and other rights and the same terms and conditions, except that Investor A Shares bear certain expenses related to the shareholder servicing of such shares. Each class has exclusive voting rights with respect to matters relating to its shareholder servicing and distribution expenditures.

2. Significant Accounting Policies:

The Funds’ financial statements are prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”), which may require management to make estimates and assumptions that affect the reported amounts of assets and liabilities in the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. The following is a summary of the significant accounting policies followed by the Funds:

Valuation: US GAAP defines fair value as the price the Funds would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The Funds’ policy is to fair value their financial instruments at market value. The Funds record their investment in the Series at fair value based on the Funds’ proportionate interest in the net assets of the Series. Valuation of securities held by the Series is discussed in Note 2 of the Series’ Notes to Financial Statements, which are included elsewhere in this report.

Investment Transactions and Investment Income: For financial reporting purposes, contributions to and withdrawals from the Series are accounted on a trade date basis. The Funds record daily their proportionate share of the Series’ income, expenses and realized and unrealized gains and losses. Realized and unrealized gains and losses are adjusted utilizing partnership tax allocation rules. In addition, the Funds accrue their own expenses. Income, expenses and realized and unrealized gains and losses are allocated daily to each class based on its relative net assets.

Dividends and Distributions: Dividends and distributions paid by the Funds are recorded on the ex-dividend dates. The character and timing of dividends and distributions are determined in accordance with federal income tax regulations, which may differ from US GAAP.

Income Taxes: It is the Funds’ policy to comply with the requirements of the Internal Revenue Code of 1986, as amended, applicable to regulated investment companies and to distribute substantially all of their taxable income to their shareholders. Therefore, no federal income tax provision is required.

The Funds file US federal and various state and local tax returns. No income tax returns are currently under examination. The statute of limitations on the Funds’ US federal tax returns remains open for each of the four years ended December 31, 2013. The statutes of limitations on the Funds’ state and local tax returns may remain open for an additional year depending upon the jurisdiction.

Management has analyzed tax laws and regulations and their application to the Funds’ facts and circumstances and does not believe there are any uncertain tax positions that require recognition of a tax liability.

Other: Expenses directly related to a Fund or its classes are charged to that Fund or class. Other operating expenses shared by several funds are pro rated among those funds on the basis of relative net assets or other appropriate methods. Expenses directly related to a Fund and other shared expenses pro rated to a Fund are allocated daily to each class based on its relative net assets or other appropriate methods.

3. Administration Agreement and Other Transactions with Affiliates:

The PNC Financial Services Group, Inc. is the largest stockholder and an affiliate, for 1940 Act purposes, of BlackRock, Inc. (“BlackRock”).

The Corporation, on behalf of the Funds, entered into an Administration Agreement with BlackRock Advisors, LLC (the “Administrator”), an indirect, wholly owned subsidiary of BlackRock, to provide administrative services (other than investment advice and related portfolio activities). For such services, each of International Index and Small Cap Index pays the Administrator a monthly fee at an annual rate of 0.24% and 0.29%, respectively, of the average daily value of the Funds’ net assets. The Funds do not pay an investment advisory fee or investment management fee.

The Administrator contractually agreed to waive and/or reimburse fees or expenses in order to limit expenses, excluding interest expense, dividend expense, acquired fund fees and expenses and certain other fund expenses, which constitute extraordinary expenses not incurred in the ordinary course of the Funds’ business.

The expense limitation as a percentage of average daily net assets is as follows:

	International Index			Small Cap Index
Institutional		0.35	%		0.30	%
Investor A		0.60	%		0.55	%
Class K		0.30	%		0.25	%

18 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Notes to Financial Statements (continued) BlackRock Index Funds, Inc.

The Administrator has agreed not to reduce or discontinue this contractual waiver or reimbursement prior to May 1, 2014 unless approved by the Corporation’s Board of Directors (the “Board”), including a majority of the Independent Directors. These amounts are shown as administration fees waived and transfer agent fees waived and/or reimbursed — class specific, respectively, in the Statements of Operations.

For the year ended December 31, 2013, the amounts shown as transfer agent fees waived and/or reimbursed — class specific were as follows:

	International Index		Small Cap Index
Institutional	$	4,427	$	6,678
Investor A	$	115,135	$	19,079
Class K	$	219	$	348

In addition, the Administrator waived $151,319 and $230,406 for International Index and Small Cap Index, respectively, which are shown as administration fees waived in the Statements of Operations.

The Corporation, on behalf of the Funds, entered into a Distribution Agreement and a Distribution Plan with BlackRock Investments, LLC (“BRIL”), an affiliate of BlackRock. Pursuant to the Distribution Plan and in accordance with Rule 12b-1 under the 1940 Act, the Funds pay BRIL ongoing service fees with respect to their Investor A Shares. The fees are accrued daily and paid monthly at the annual rate of 0.25% based upon the average daily net assets attributable to Investor A Shares.

Pursuant to sub-agreements with BRIL, broker-dealers and BRIL provide shareholder servicing to the Funds. The ongoing service fee compensates BRIL and each broker-dealer for providing shareholder servicing to Investor A shareholders.

Pursuant to written agreements, certain financial intermediaries, some of which may be affiliates, provide the Funds with sub-accounting, recordkeeping, sub-transfer agency and other administrative services with respect to sub-accounts they service. For these services, these entities receive an annual fee per shareholder account, which will vary depending on share class and/or net assets. For the year ended December 31, 2013, the Funds paid the following to affiliates in return for these services, which are included in transfer agent — class specific in the Statements of Operations:

	International Index		Small Cap Index
Investor A		—	$	191

The Administrator maintains a call center, which is responsible for providing certain shareholder services to the Funds, such as responding to shareholder inquiries and processing transactions based upon instructions from shareholders with respect to the subscription and redemption of Fund shares. For the year ended December 31, 2013, the Funds reimbursed the Administrator the following amounts for costs incurred in running the call center, which are included in transfer agent — class specific in the Statements of Operations:

	International Index		Small Cap Index
Institutional	$	364	$	196
Investor A	$	4,375	$	2,396
Class K	$	23	$	48

Certain officers and/or directors of the Corporation are officers and/or directors of BlackRock or its affiliates. The Funds reimburse the Administrator for a portion of the compensation paid to the Corporation’s Chief Compliance Officer.

4. Income Tax Information:

US GAAP requires that certain components of net assets be adjusted to reflect permanent differences between financial and tax reporting. These reclassifications have no effect on net assets or net asset values per share. The following permanent differences as of December 31, 2013 attributable to foreign currency transactions and the sale of stock of passive foreign investment companies by the Series were reclassified to the following accounts:

	International Index			Small Cap Index
Undistributed (distributions in excess of) net investment income	$	(239,915	)	$	7,871
Accumulated net realized loss allocated from the Series	$	239,915		$	(7,871	)

The tax character of distributions paid during the fiscal years ended December 31, 2013 and December 31, 2012 was as follows:

		International Index		Small Cap Index
Ordinary income	12/31/13	$	8,280,648	$	1,356,329
	12/31/12		8,192,718		2,366,007
Long-term capital gains	12/31/13		—		2,669,474
Total	12/31/13	$	8,280,648	$	4,025,803
	12/31/12	$	8,192,718	$	2,366,007

As of December 31, 2013, the tax components of accumulated net earnings were as follows:

	International Index			Small Cap Index
Undistributed net investment income	$	313,701		$	260,454
Undistributed long-term capital gains		—			1,354,052
Capital loss carryforwards		(39,541,041	)		—
Net unrealized gains1		77,438,332			38,302,529
Qualified late-year losses2		(114,774	)		—
Total	$	38,096,218		$	39,917,035

¹  The differences between book-basis and tax-basis net unrealized gains were attributable primarily to the timing of income recognition on partnership interests.

²  The Fund has elected to defer certain late-year losses and recognize such losses in the year ending December 31, 2014.

As of December 31, 2013, International Index had capital loss carryforwards available to offset future realized capital gains through the indicated expiration dates as follows:

Expires December 31,	International Index
2016	$	4,270,741
2017		6,596,186
No expiration date3		28,674,114
Total	$	39,541,041

³ Must be utilized prior to losses subject to expiration.

During the year ended December 31, 2013, Small Cap Index utilized $5,382,674 of its capital loss carryforward.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 19

Notes to Financial Statements (concluded) BlackRock Index Funds, Inc.

5. Capital Share Transactions:

Transactions in capital shares for each class were as follows:

	Year Ended December 31, 2013						Year Ended December 31, 2012
International Index	Shares			Amount			Shares			Amount
Institutional
Shares sold		2,307,793		$	28,259,339			2,586,365		$	27,014,746
Shares issued to shareholders in reinvestment of dividends		118,137			1,469,546			133,467			1,452,499
Shares redeemed		(1,702,180	)		(20,394,277	)		(5,251,574	)		(54,524,964	)
Net increase (decrease)		723,750		$	9,334,608			(2,531,742	)	$	(26,057,719	)
Investor A
Shares sold		8,157,663		$	97,856,110			6,287,982		$	64,635,262
Shares issued to shareholders in reinvestment of dividends		531,595			6,563,648			597,968			6,462,313
Shares redeemed		(5,347,646	)		(64,736,792	)		(4,100,677	)		(42,432,223	)
Net increase		3,341,612		$	39,682,966			2,785,273		$	28,665,352
Class K
Shares sold		142,049		$	1,709,658			72,801		$	753,833
Shares issued to shareholders in reinvestment of dividends		4,293			53,404			1,909			20,814
Shares redeemed		(32,374	)		(391,432	)		(12,648	)		(135,792	)
Net increase		113,968		$	1,371,630			62,062		$	638,855
Total Net Increase		4,179,330		$	50,389,204			315,593		$	3,246,488

	Year Ended December 31, 2013						Year Ended December 31, 2012
Small Cap Index	Shares			Amount			Shares			Amount
Institutional
Shares sold		1,391,454		$	21,530,848			1,580,057		$	19,997,150
Shares issued to shareholders in reinvestment of dividends		96,233			1,594,347			92,861			1,184,913
Shares redeemed		(1,432,058	)		(21,790,150	)		(2,591,654	)		(32,891,463	)
Net increase (decrease)		55,629		$	1,335,045			(918,736	)	$	(11,709,400	)
Investor A
Shares sold		1,794,352		$	27,777,242			1,177,051		$	14,949,308
Shares issued to shareholders in reinvestment of dividends		123,926			2,058,237			81,185			1,037,519
Shares redeemed		(964,345	)		(14,728,990	)		(1,400,945	)		(17,787,742	)
Net increase (decrease)		953,933		$	15,106,489			(142,709	)	$	(1,800,915	)
Class K
Shares sold		74,025		$	1,102,083			2,476		$	29,350
Shares issued to shareholders in reinvestment of dividends		1,967			32,605			33			423
Shares redeemed		(10,838	)		(170,596	)		(1,299	)		(16,750	)
Net increase		65,154		$	964,092			1,210		$	13,023
Total Net Increase (Decrease)		1,074,716		$	17,405,626			(1,060,235	)	$	(13,497,292	)

At December 31, 2013, 1,898 Class K shares of Small Cap Index were owned by affiliates.

6. Subsequent Events:

Management has evaluated the impact of all subsequent events on the Funds through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment or additional disclosure in the financial statements.

20 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Report of Independent Registered Public Accounting Firm BlackRock Index Funds, Inc.

To the Shareholders of BlackRock International Index Fund and BlackRock Small Cap Index Fund and Board of Directors of BlackRock Index Funds, Inc.:

We have audited the accompanying statements of assets and liabilities of BlackRock International Index Fund and BlackRock Small Cap Index Fund, each one of the series constituting BlackRock Index Funds, Inc., (the “Funds”) as of December 31, 2013, 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 periods presented. These financial statements and financial highlights are the responsibility of the Funds’ 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 audits to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Funds are not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included 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 on the effectiveness of the Funds’ 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 significant estimates made by management, as well as evaluating the overall financial statement presentation. 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 BlackRock International Index Fund and BlackRock Small Cap Index Fund, of BlackRock Index Funds, Inc., as of December 31, 2013, 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 periods presented, in conformity with accounting principles generally accepted in the United States of America.

Deloitte & Touche LLP

Boston, Massachusetts

February 18, 2014

Important Tax Information (Unaudited)

The following information is provided with respect to the ordinary income distributions paid by the Funds for the taxable year ended December 31, 2013.

	Payable Date		International Index		Small Cap Index
Qualified Dividend Income for Individuals1,2		7/19/2013		100.00%		—
		12/16/2013		100.00%		82.47%
Dividends Qualifying for the Dividend Received Deduction for Corporations1		12/16/2013		—		79.72%
Foreign Source Income2		7/19/2013		100.00%		—
		12/16/2013		86.90%		—
Foreign Taxes Paid Per Share3		12/16/2013		$0.028558		—

¹  The Funds hereby designate the percentage indicated or the maximum amount allowable by law.

²  Expressed as a percentage of the cash distribution grossed-up for foreign taxes.

³  The foreign taxes paid represent taxes incurred by the Funds on income received by the Funds from foreign sources. Foreign taxes paid may be included in taxable income with an offsetting deduction from gross income or may be taken as a credit for taxes paid to foreign governments. You should consult your tax advisor regarding the appropriate treatment of foreign taxes paid.

Additionally, Small Cap Index distributed long-term capital gains of $0.336642 per share to shareholders of record on December 13, 2013.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 21

Series Portfolio Information as of December 31, 2013 Quantitative Master Series LLC

Master International Index Series

Master Small Cap Index Series

Ten Largest Holdings Percent of
Long-Term Investments

Nestlé SA, Registered Shares	2	%
HSBC Holdings PLC	2
Roche Holding AG	1
Vodafone Group PLC	1
Novartis AG, Registered Shares	1
Toyota Motor Corp	1
BP PLC	1
Royal Dutch Shell PLC, Class A	1
Total SA	1
GlaxoSmithKline PLC	1

Geographic Allocation Percent of
Long-Term  Investments

United Kingdom	21	%
Japan	21
France	10
Switzerland	9
Germany	9
Australia	7
Spain	3
Sweden	3
Netherlands	3
Hong Kong	3
Italy	2
Other1	9

¹  Includes holdings within countries that are 1% or less of long-term investments. Please refer to the Schedule of Investments for such countries.

Ten Largest Holdings Percent of
Long-Term Investments

CoStar Group, Inc	0.3	%
athenahealth, Inc	0.3
Acuity Brands, Inc	0.3
Middleby Corp	0.3
Isis Pharmaceuticals, Inc	0.3
PTC, Inc	0.3
Ultimate Software Group, Inc	0.3
Align Technology, Inc	0.3
Brunswick Corp	0.2
CNO Financial Group, Inc	0.2

Sector Allocation Percent of
Long-Term Investments

Financials	23	%
Information Technology	18
Industrials	14
Consumer Discretionary	14
Health Care	13
Energy	5
Materials	5
Consumer Staples	4
Utilities	3
Telecommunication Services	1

For Series compliance purposes, the Series’ sector classifications refer to any one or more of the sector sub-classifications used by one or more widely recognized market indexes, and/or as defined by the investment advisor. These definitions may not apply for purposes of this report, which may combine such sector sub-classifications for reporting ease.

22 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments December 31, 2013 Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Australia — 7.2%
AGL Energy Ltd.		41,328	$	555,562
ALS Ltd.		26,610		209,938
Alumina Ltd. (a)		173,063		171,819
Amcor Ltd.		90,897		858,593
AMP Ltd.		215,016		845,105
APA Group		64,828		347,943
Asciano Ltd.		75,530		389,391
ASX Ltd.		14,765		485,548
Aurizon Holdings Ltd.		147,901		645,963
Australia & New Zealand Banking Group Ltd.		204,016		5,889,579
Bank of Queensland Ltd.		25,559		278,263
Bendigo and Adelaide Bank Ltd.		29,133		306,250
BGP Holdings PLC (a)		783,183		11
BHP Billiton Ltd.		238,832		8,142,480
Boral Ltd.		54,919		234,870
Brambles Ltd.		116,802		956,952
Caltex Australia Ltd.		9,654		173,491
CFS Retail Property Trust		156,155		271,816
Coca-Cola Amatil Ltd.		43,897		472,226
Cochlear Ltd.		4,105		216,281
Commonwealth Bank of Australia		119,868		8,352,052
Computershare Ltd.		34,173		348,236
Crown Resorts Ltd.		28,521		430,318
CSL Ltd.		36,213		2,232,418
Dexus Property Group		370,923		333,602
Echo Entertainment Group Ltd.		52,974		116,691
Federation Centres Ltd.		98,111		205,662
Flight Centre Ltd.		3,947		168,098
Fortescue Metals Group Ltd.		118,642		619,765
Goodman Group		129,181		547,309
GPT Group		126,543		384,836
Harvey Norman Holdings Ltd.		38,809		109,826
Iluka Resources Ltd.		29,539		228,899
Incitec Pivot Ltd.		114,484		274,639
Insurance Australia Group Ltd.		156,985		817,364
Leighton Holdings Ltd.		12,216		176,421
Lend Lease Group		39,211		391,314
Macquarie Group Ltd.		21,677		1,063,976
Metcash Ltd.		63,088		178,163
Mirvac Group		261,343		392,985
National Australia Bank Ltd.		174,663		5,451,589
Newcrest Mining Ltd.		54,223		380,770
Orica Ltd.		27,720		592,757
Origin Energy Ltd.		81,421		1,026,117
Qantas Airways Ltd. (a)		77,541		76,061
QBE Insurance Group Ltd.		92,534		954,554
Ramsay Health Care Ltd.		9,937		384,576
REA Group Ltd.		4,134		139,637
Rio Tinto Ltd.		32,394		1,982,745
Santos Ltd.		73,137		958,525
Seek Ltd.		23,033		276,913
Sonic Healthcare Ltd.		30,221		448,494
SP AusNet		124,539		138,683
Stockland		167,237		540,696
Suncorp Group Ltd.		96,939		1,137,855
Sydney Airport		93,887		319,088
Tabcorp Holdings Ltd.		52,333		169,916
Tatts Group Ltd.		100,334		278,170
Telstra Corp. Ltd.		321,971		1,511,204
Toll Holdings Ltd.		49,469		251,607
Common Stocks	Shares		Value
Australia (concluded)
Transurban Group		102,134	$	624,590
Treasury Wine Estates Ltd.		46,594		200,960
Wesfarmers Ltd.		73,491		2,893,557
Westfield Group		153,583		1,386,443
Westfield Retail Trust		223,839		594,659
Westpac Banking Corp.		230,799		6,690,555
Woodside Petroleum Ltd.		48,996		1,706,457
Woolworths Ltd.		92,542		2,802,296
WorleyParsons Ltd.		14,832		220,634
				72,964,763
Austria — 0.3%
Andritz AG		5,118		320,740
Erste Group Bank AG		18,712		652,308
Immoeast AG NPV (a)		30,711		1
IMMOFINANZ AG		67,515		312,849
OMV AG		11,146		533,454
Raiffeisen Bank International AG		3,624		127,965
Telekom Austria AG		15,806		119,681
Vienna Insurance Group AG		2,602		130,042
Voestalpine AG		8,606		413,555
				2,610,595
Belgium — 1.2%
Ageas		17,242		735,259
Anheuser-Busch InBev NV		59,757		6,354,331
Belgacom SA		10,971		324,657
Colruyt SA		5,476		305,962
Delhaize Group		7,869		468,142
Groupe Bruxelles Lambert SA		6,236		572,846
KBC Groep NV		18,430		1,047,846
Solvay SA		4,431		701,291
Telenet Group Holding NV		3,551		211,892
UCB SA		8,283		617,097
Umicore SA		8,156		381,087
				11,720,410
Denmark — 1.1%
A.P. Moeller - Maersk A/S, Class A		40		412,042
A.P. Moeller - Maersk A/S, Class B		97		1,049,729
Carlsberg A/S, Class B		7,904		874,607
Coloplast A/S, Class B		8,258		547,469
Danske Bank A/S (a)		49,080		1,127,449
DSV A/S		13,109		430,401
Novo Nordisk A/S, Class B		29,614		5,428,300
Novozymes A/S, Class B		16,408		693,078
TDC A/S		64,238		623,101
Tryg A/S		1,678		162,262
William Demant Holding A/S (a)		1,914		186,009
				11,534,447
Finland — 0.9%
Elisa OYJ		10,481		277,704
Fortum OYJ		33,149		758,379
Kone OYJ, Class B		23,104		1,041,958
Metso OYJ		9,209		393,795
Neste Oil OYJ		8,875		175,516
Nokia OYJ (a)		276,182		2,231,550
Nokian Renkaat OYJ		8,076		387,280
Orion OYJ, Class B		6,857		192,730
Pohjola Bank PLC, Class A		10,148		203,474

Portfolio Abbreviations

To simplify the listings of portfolio holdings in the Schedules of Investments, the names and descriptions of many of the securities have been abbreviated according to the following list:	ADR	American Depositary Receipts	FKA	Formerly Known As
	EUR	Euro	USD	US Dollar

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 23

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Finland (concluded)
Sampo OYJ, Class A		30,834	$	1,515,572
Stora Enso OYJ, Class R		40,003		401,980
UPM-Kymmene OYJ		39,871		676,215
Wartsila OYJ		13,016		641,702
				8,897,855
France — 9.7%
Accor SA		11,513		543,757
Aeroports de Paris		2,172		246,631
Air Liquide SA		23,179		3,280,608
Alcatel-Lucent (a)		205,236		910,780
Alstom SA		16,336		595,717
ArcelorMittal		75,327		1,345,502
Arkema		4,755		555,185
AtoS		5,307		480,833
AXA SA		133,406		3,715,036
BNP Paribas SA		74,030		5,774,877
Bouygues SA		14,603		552,224
Bureau Veritas SA		17,032		497,245
Cap Gemini SA		10,725		725,926
Carrefour SA		45,287		1,797,591
Casino Guichard-Perrachon SA		4,285		494,429
CGG (a)		11,523		199,980
Christian Dior SA		4,052		766,966
Cie Generale des Etablissements Michelin		13,743		1,462,264
CNP Assurances		13,219		271,070
Compagnie de Saint-Gobain		30,657		1,688,803
Credit Agricole SA (a)		73,749		945,382
Danone SA		42,226		3,046,262
Dassault Systemes SA		4,678		580,677
Edenred		15,541		520,350
EDF SA		17,482		618,463
Essilor International SA		15,045		1,600,897
Eurazeo		2,296		180,073
European Aeronautic Defence and Space Co. NV		43,903		3,370,441
Eutelsat Communications SA		10,266		320,323
Fonciere Des Regions		1,928		166,433
GDF Suez		98,659		2,320,402
Gecina SA		1,582		209,468
Groupe Eurotunnel SA, Registered Shares		40,758		428,500
ICADE		2,822		262,702
Iliad SA		1,913		391,956
Imerys SA		2,500		217,620
JCDecaux SA		4,659		192,338
Kering		5,577		1,178,869
Klepierre		7,190		333,273
L’Oreal SA		17,979		3,157,344
Lafarge SA		13,957		1,047,610
Lagardere S.C.A.		8,620		320,436
Legrand SA		19,798		1,091,116
LVMH Moet Hennessy Louis Vuitton SA		18,878		3,448,896
Natixis		70,781		416,421
Orange SA		139,104		1,726,993
Pernod- Ricard SA		15,778		1,797,605
Publicis Groupe SA		13,455		1,232,817
Remy Cointreau SA		2,081		174,805
Renault SA		14,234		1,145,501
Rexel SA		16,321		428,322
Safran SA		19,916		1,384,728
Sanofi		88,797		9,483,057
Schneider Electric SA		39,580		3,453,018
SCOR SE		11,602		424,360
SES SA		22,818		739,221
Societe BIC SA		2,281		279,546
Societe Generale SA		53,442		3,107,676
Sodexo		7,024		712,289
Suez Environnement Co.		21,425		384,216
Technip SA		7,474		719,452
Common Stocks	Shares		Value
France (concluded)
Thales SA		6,976	$	449,558
Total SA		159,070		9,763,623
Unibail-Rodamco SE		7,243		1,856,085
Valeo SA		5,500		609,517
Vallourec SA		8,109		442,396
Veolia Environnement SA		27,102		442,640
Vinci SA		35,407		2,327,345
Vivendi SA		89,757		2,367,556
Wendel SA		2,277		331,900
Zodiac Aerospace		2,576		456,493
				98,512,395
Germany — 9.1%
Adidas AG		15,586		1,987,493
Allianz SE, Registered Shares		33,904		6,100,199
Axel Springer AG		3,376		217,349
BASF SE		68,300		7,289,922
Bayer AG, Registered Shares		61,495		8,634,542
Bayerische Motoren Werke AG		24,484		2,875,221
Bayerische Motoren Werke AG, Preference Shares		3,839		328,282
Beiersdorf AG		7,550		765,454
Brenntag AG		3,750		695,984
Celesio AG		5,979		189,576
Commerzbank AG (a)		71,938		1,161,323
Continental AG		8,112		1,782,120
Daimler AG, Registered Shares		71,575		6,211,595
Deutsche Bank AG, Registered Shares		75,870		3,644,901
Deutsche Boerse AG		14,416		1,194,710
Deutsche Lufthansa AG, Registered Shares (a)		17,906		379,545
Deutsche Post AG, Registered Shares		67,884		2,479,461
Deutsche Telekom AG, Registered Shares		215,126		3,706,659
Deutsche Wohnen AG		21,639		417,833
E.ON SE		133,466		2,467,505
Fraport AG Frankfurt Airport Services Worldwide		2,725		204,199
Fresenius Medical Care AG & Co. KGaA		15,782		1,125,663
Fresenius SE & Co. KGaA		9,252		1,422,721
GEA Group AG		13,592		648,141
Hannover Rueck SE		4,279		367,869
HeidelbergCement AG		10,667		810,000
Henkel AG & Co. KGaA		9,574		998,175
Henkel AG & Co. KGaA, Preference Shares		13,157		1,529,297
Hochtief AG		2,160		184,857
Hugo Boss AG		2,272		323,592
Infineon Technologies AG		79,909		853,549
K+S AG, Registered Shares		13,591		418,774
Kabel Deutschland Holding AG		1,518		196,761
Lanxess AG		6,435		429,982
Linde AG		13,803		2,890,154
MAN SE		2,519		309,286
Merck KGaA		4,798		860,895
Metro AG		9,325		452,074
Muenchener Rueckversicherungs AG, Registered Shares		13,334		2,941,079
Osram Licht AG (a)		6,414		361,773
Porsche Automobil Holding SE, Preference Shares		11,345		1,184,321
ProSiebenSat.1 Media AG, Registered Shares		13,947		692,550
RWE AG		36,393		1,333,403
SAP AG		68,514		5,941,640
Siemens AG, Registered Shares		58,962		8,084,783
Sky Deutschland AG (a)		32,556		359,842
Suedzucker AG		5,905		159,523
Telefonica Deutschland Holding AG		20,099		166,109
ThyssenKrupp AG (a)		33,638		820,265
United Internet AG, Registered Shares		7,797		332,386
Volkswagen AG		2,234		606,571
Volkswagen AG, Preference Shares		10,752		3,025,813
				92,565,721

See Notes to Financial Statements.

24 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Hong Kong — 2.8%
AIA Group Ltd.		894,600	$	4,502,958
ASM Pacific Technology Ltd.		17,304		144,827
Bank of East Asia Ltd.		94,532		401,292
BOC Hong Kong Holdings Ltd.		277,400		890,914
Cathay Pacific Airways Ltd.		87,263		184,898
Cheung Kong Holdings Ltd.		102,835		1,626,928
Cheung Kong Infrastructure Holdings Ltd.		44,500		281,291
CLP Holdings Ltd.		133,187		1,053,423
First Pacific Co., Ltd.		173,250		197,538
Galaxy Entertainment Group Ltd. (a)		156,000		1,404,508
Hang Lung Properties Ltd.		169,000		535,711
Hang Seng Bank Ltd.		57,153		928,253
Henderson Land Development Co., Ltd.		81,240		464,445
HKT Trust/HKT Ltd.		156,000		154,356
Hong Kong & China Gas Co., Ltd.		428,324		983,425
Hong Kong Exchanges & Clearing Ltd.		76,627		1,280,845
Hopewell Holdings Ltd.		41,349		140,207
Hutchison Whampoa Ltd.		158,176		2,155,268
Hysan Development Co., Ltd.		45,791		197,668
Kerry Properties Ltd.		52,500		182,801
Li & Fung Ltd.		437,980		566,140
The Link REIT		169,414		821,668
MGM China Holdings Ltd.		68,000		291,031
MTR Corp.		103,500		392,287
New World Development Co., Ltd.		293,226		371,298
NWS Holdings Ltd.		102,837		156,964
PCCW Ltd.		276,000		123,508
Power Assets Holdings Ltd.		102,500		815,947
Sands China Ltd.		181,000		1,483,355
Shangri-La Asia Ltd.		123,905		241,927
Sino Land Co., Ltd.		211,263		289,724
SJM Holdings Ltd.		148,000		497,497
Sun Hung Kai Properties Ltd.		120,324		1,529,241
Swire Pacific Ltd., Class A		51,077		600,137
Swire Properties Ltd.		83,000		210,186
Wharf Holdings Ltd.		114,357		875,992
Wheelock & Co., Ltd.		72,000		331,695
Wynn Macau Ltd.		119,600		543,658
Yue Yuen Industrial Holdings Ltd.		54,285		181,514
				28,035,325
Ireland — 0.5%
Bank of Ireland (a)		1,682,693		586,461
CRH PLC		54,145		1,372,136
James Hardie Industries SE		34,310		398,194
Kerry Group PLC, Class A		10,853		753,988
Perrigo Co. PLC		1		89
Prothena Corp. PLC (a)		35		928
Ryanair Holdings PLC (a)		10,891		93,723
Shire PLC		40,788		1,922,224
				5,127,743
Israel — 0.4%
Bank Hapoalim BM		80,579		451,491
Bank Leumi Le-Israel (a)		97,082		396,444
Bezeq The Israeli Telecommunication Corp. Ltd.		133,123		225,758
Delek Group Ltd.		372		142,099
Israel Chemicals Ltd.		31,321		261,253
The Israel Corp. Ltd. (a)		206		108,477
Mizrahi Tefahot Bank Ltd.		8,935		116,952
NICE Systems Ltd.		4,090		167,252
Teva Pharmaceutical Industries Ltd.		63,187		2,528,199
				4,397,925
Italy — 2.1%
Assicurazioni Generali SpA		87,259		2,050,085
Atlantia SpA		27,601		618,258
Banca Monte dei Paschi di Siena SpA (a)		447,785		107,773
Common Stocks	Shares		Value
Italy (concluded)
Enel Green Power SpA		137,956	$	347,073
Enel SpA		490,782		2,141,476
ENI SpA		189,160		4,570,796
Exor SpA		7,730		307,236	��
Fiat SpA (a)		64,470		527,682
Finmeccanica SpA (a)		29,559		224,368
Intesa Sanpaolo SpA		864,312		2,125,948
Luxottica Group SpA		12,469		668,231
Mediobanca SpA (a)		37,921		331,612
Pirelli & C SpA		16,831		291,178
Prysmian SpA		14,595		375,778
Saipem SpA		20,287		435,067
Snam SpA		153,099		855,724
Telecom Italia SpA		730,841		728,762
Telecom Italia SpA, Non-Convertible Savings Shares		434,224		340,708
Tenaris SA		34,984		762,317
Terna - Rete Elettrica Nazionale SpA		110,801		553,349
UniCredit SpA		324,324		2,392,423
Unione di Banche Italiane ScpA		62,528		423,895
				21,179,739
Japan — 20.4%
ABC-Mart, Inc.		2,000		87,377
Acom Co., Ltd. (a)		29,800		101,536
Advantest Corp.		10,200		127,097
Aeon Co., Ltd.		45,800		620,896
AEON Financial Service Co., Ltd.		4,500		120,669
Aeon Mall Co., Ltd.		8,250		231,110
Air Water, Inc.		10,000		135,531
Aisin Seiki Co., Ltd.		14,500		589,513
Ajinomoto Co., Inc.		46,000		665,927
Alfresa Holdings Corp.		2,900		143,941
Amada Co., Ltd.		29,000		256,108
ANA Holdings, Inc. FKA All Nippon Airways Co., Ltd. (b)		81,000		161,827
Aozora Bank Ltd.		77,000		218,209
Asahi Glass Co., Ltd.		77,100		480,085
Asahi Group Holdings Ltd.		28,200		795,795
Asahi Kasei Corp.		93,000		729,475
Asics Corp.		11,000		188,015
Astellas Pharma, Inc.		32,400		1,920,893
The Bank of Kyoto Ltd.		23,000		192,274
The Bank of Yokohama Ltd.		88,000		490,972
Benesse Holdings, Inc.		5,800		233,011
Bridgestone Corp.		48,500		1,837,513
Brother Industries Ltd.		17,100		233,902
Calbee, Inc.		5,600		135,997
Canon, Inc.		84,300		2,689,878
Casio Computer Co., Ltd.		15,800		193,611
Central Japan Railway Co.		10,700		1,261,017
The Chiba Bank Ltd.		53,000		357,679
Chiyoda Corp.		13,000		188,715
Chubu Electric Power Co., Inc.		48,500		626,999
Chugai Pharmaceutical Co., Ltd.		15,900		351,947
The Chugoku Bank Ltd.		12,900		163,961
The Chugoku Electric Power Co., Inc.		22,300		347,217
Citizen Holdings Co., Ltd.		19,000		160,304
Coca-Cola West Co., Ltd.		3,900		82,601
Credit Saison Co., Ltd.		12,500		329,525
Dai Nippon Printing Co., Ltd.		40,000		424,886
The Dai-ichi Life Insurance Co., Ltd.		63,700		1,065,893
Daicel Corp.		21,000		171,146
Daido Steel Co., Ltd.		21,000		104,508
Daihatsu Motor Co., Ltd.		15,100		256,138
Daiichi Sankyo Co., Ltd.		51,000		932,533
Daikin Industries Ltd.		17,600		1,098,287
Dainippon Sumitomo Pharma Co., Ltd.		11,000		172,293

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 25

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Japan (continued)
Daito Trust Construction Co., Ltd.		5,500	$	514,184
Daiwa House Industry Co., Ltd.		44,000		852,508
Daiwa Securities Group, Inc.		122,000		1,221,896
Dena Co., Ltd. (b)		7,400		155,995
Denso Corp.		36,600		1,933,529
Dentsu, Inc.		16,013		654,910
Don Quijote Co., Ltd.		4,300		260,666
East Japan Railway Co.		24,949		1,987,381
Eisai Co., Ltd.		18,800		728,633
Electric Power Development Co., Ltd.		8,400		244,917
FamilyMart Co., Ltd.		4,000		182,746
FANUC Corp.		14,400		2,638,664
Fast Retailing Co., Ltd.		3,900		1,610,789
Fuji Electric Co., Ltd.		40,800		191,165
Fuji Heavy Industries Ltd.		43,800		1,258,766
FUJIFILM Holdings Corp.		34,300		973,607
Fujitsu Ltd. (a)		139,000		720,392
Fukuoka Financial Group, Inc.		54,000		237,030
Gree, Inc. (b)		6,400		63,143
GungHo Online Entertainment, Inc. (a)(b)		24,000		172,871
The Gunma Bank Ltd.		27,000		150,859
The Hachijuni Bank Ltd.		28,000		163,456
Hakuhodo DY Holdings, Inc.		16,400		127,145
Hamamatsu Photonics KK		4,900		196,074
Hankyu Hanshin Holdings, Inc.		88,000		475,505
Hino Motors Ltd.		18,000		283,549
Hirose Electric Co., Ltd.		2,400		342,123
The Hiroshima Bank Ltd.		35,000		145,031
Hisamitsu Pharmaceutical Co., Inc.		4,400		221,726
Hitachi Chemical Co., Ltd.		7,400		118,018
Hitachi Construction Machinery Co., Ltd.		7,300		156,208
Hitachi High-Technologies Corp.		4,400		110,779
Hitachi Ltd.		359,000		2,721,992
Hitachi Metals Ltd.		15,000		212,239
Hokkaido Electric Power Co., Inc. (a)		12,900		148,449
Hokuhoku Financial Group, Inc.		85,000		169,944
Hokuriku Electric Power Co.		11,700		158,891
Honda Motor Co., Ltd.		121,600		5,019,295
Hoya Corp.		32,300		898,324
Hulic Co., Ltd.		20,600		304,865
Ibiden Co., Ltd.		8,400		157,289
Idemitsu Kosan Co., Ltd.		6,000		136,594
IHI Corp.		94,000		406,516
Iida Group Holdings Co., Ltd. (a)		10,400		207,585
Inpex Corp.		65,100		834,983
Isetan Mitsukoshi Holdings Ltd.		25,205		358,810
Isuzu Motors Ltd.		89,000		555,088
ITOCHU Corp.		114,600		1,416,757
Itochu Techno-Solutions Corp.		1,700		68,907
The Iyo Bank Ltd.		19,000		186,409
J. Front Retailing Co., Ltd.		34,600		262,485
Japan Airlines Co., Ltd.		4,340		214,098
Japan Exchange Group, Inc.		18,800		534,369
Japan Petroleum Exploration Co.		2,000		75,853
Japan Prime Realty Investment Corp.		53		169,619
Japan Real Estate Investment Corp.		92		492,206
Japan Retail Fund Investment Corp.		167		339,794
The Japan Steel Works Ltd.		24,000		134,485
Japan Tobacco, Inc.		81,700		2,658,416
JFE Holdings, Inc.		36,100		860,264
JGC Corp.		16,000		627,901
The Joyo Bank Ltd.		53,000		270,998
JSR Corp.		12,500		242,286
JTEKT Corp.		15,100		257,650
JX Holdings, Inc.		165,860		854,087
Kajima Corp.		57,800		217,386
Kakaku.com, Inc.		11,800		207,284
Common Stocks	Shares		Value
Japan (continued)
Kamigumi Co., Ltd.		17,000	$	155,983
Kaneka Corp.		20,000		131,323
The Kansai Electric Power Co., Inc. (a)		51,600		593,881
Kansai Paint Co., Ltd.		18,000		266,183
Kao Corp.		37,800		1,190,012
Kawasaki Heavy Industries Ltd.		108,000		453,576
KDDI Corp.		39,900		2,458,447
Keikyu Corp.		36,000		296,824
Keio Corp.		41,000		273,222
Keisei Electric Railway Co., Ltd.		20,000		184,027
Keyence Corp.		3,292		1,409,585
Kikkoman Corp.		12,000		226,900
Kinden Corp.		10,000		104,696
Kintetsu Corp.		129,000		452,643
Kirin Holdings Co., Ltd.		66,000		950,496
Kobe Steel Ltd. (a)		179,000		306,875
Koito Manufacturing Co., Ltd.		7,000		133,753
Komatsu Ltd.		70,200		1,441,295
Konami Corp.		6,800		157,242
Konica Minolta Holdings, Inc.		37,000		369,752
Kubota Corp.		81,000		1,343,566
Kuraray Co., Ltd.		24,400		291,258
Kurita Water Industries Ltd.		8,200		170,110
Kyocera Corp.		24,600		1,229,792
Kyowa Hakko Kirin Co., Ltd.		19,000		209,666
Kyushu Electric Power Co., Inc. (a)		32,700		417,637
Lawson, Inc.		4,700		351,729
LIXIL Group Corp.		20,300		557,283
M3, Inc.		56		140,244
Mabuchi Motor Co., Ltd.		1,800		107,112
Makita Corp.		8,000		420,741
Marubeni Corp.		125,000		899,884
Marui Group Co., Ltd.		15,700		159,690
Maruichi Steel Tube Ltd.		3,400		85,882
Mazda Motor Corp. (a)		197,400		1,022,939
McDonald’s Holdings Co. Japan Ltd.		4,500		114,914
Medipal Holdings Corp.		10,100		133,335
Meiji Holdings Co., Ltd.		4,393		282,370
Miraca Holdings, Inc.		4,100		193,423
Mitsubishi Chemical Holdings Corp.		101,000		467,401
Mitsubishi Corp.		104,400		2,004,262
Mitsubishi Electric Corp.		144,000		1,810,722
Mitsubishi Estate Co., Ltd.		94,000		2,813,047
Mitsubishi Gas Chemical Co., Inc.		27,000		199,037
Mitsubishi Heavy Industries Ltd.		230,200		1,425,759
Mitsubishi Logistics Corp.		9,000		142,473
Mitsubishi Materials Corp.		87,000		321,591
Mitsubishi Motors Corp. (a)		33,300		358,251
Mitsubishi Tanabe Pharma Corp.		16,000		223,152
Mitsubishi UFJ Financial Group, Inc.		948,274		6,295,965
Mitsubishi UFJ Lease & Finance Co., Ltd.		41,900		257,594
Mitsui & Co., Ltd.		129,700		1,808,165
Mitsui Chemicals, Inc.		64,000		154,753
Mitsui Fudosan Co., Ltd.		63,000		2,272,451
Mitsui OSK Lines Ltd.		85,000		383,622
Mizuho Financial Group, Inc.		1,708,264		3,708,695
MS&AD Insurance Group Holdings, Inc.		37,970		1,020,594
Murata Manufacturing Co., Ltd.		15,300		1,360,679
Nabtesco Corp.		8,900		205,401
Namco Bandai Holdings, Inc.		13,000		288,632
NEC Corp.		157,000		354,381
Nexon Co., Ltd.		7,300		67,452
NGK Insulators Ltd.		21,000		399,648
NGK Spark Plug Co., Ltd.		13,000		308,108
NHK Spring Co., Ltd.		10,700		120,895
Nidec Corp.		7,500		738,859
Nikon Corp.		26,100		498,790

See Notes to Financial Statements.

26 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Japan (continued)
Nintendo Co., Ltd.		7,800	$	1,044,058
Nippon Building Fund, Inc.		102		592,642
Nippon Electric Glass Co., Ltd.		26,500		139,209
Nippon Express Co., Ltd.		61,000		295,277
Nippon Meat Packers, Inc.		14,000		240,626
Nippon Paint Co., Ltd.		15,000		249,571
Nippon Prologis REIT, Inc.		18		172,421
Nippon Steel & Sumitomo Metal		569,265		1,909,203
Nippon Telegraph & Telephone Corp.		27,576		1,485,254
Nippon Yusen KK		124,000		396,481
The Nishi-Nippon City Bank Ltd.		48,000		129,309
Nissan Motor Co., Ltd.		185,300		1,552,814
Nisshin Seifun Group, Inc.		15,400		159,270
Nissin Foods Holdings Co., Ltd.		4,300		181,466
Nitori Holdings Co., Ltd.		2,750		260,362
Nitto Denko Corp.		12,010		507,838
NKSJ Holdings, Inc.		24,175		672,878
NOK Corp.		7,100		116,291
Nomura Holdings, Inc.		269,600		2,083,418
Nomura Real Estate Holdings, Inc.		8,800		198,289
Nomura Real Estate Office Fund, Inc.		27		125,486
Nomura Research Institute Ltd.		8,100		255,983
NSK Ltd.		36,000		448,644
NTT Data Corp.		9,100		336,186
NTT DoCoMo, Inc.		114,000		1,877,155
NTT Urban Development Corp.		8,400		96,827
Obayashi Corp.		46,000		262,373
Odakyu Electric Railway Co., Ltd.		49,000		443,148
Oji Holdings Corp.		57,000		292,376
Olympus Corp. (a)		17,800		564,558
Omron Corp.		15,500		684,996
Ono Pharmaceutical Co., Ltd.		6,300		552,230
Oracle Corp. Japan		2,600		95,041
Oriental Land Co., Ltd.		3,700		533,592
ORIX Corp.		94,300		1,657,026
Osaka Gas Co., Ltd.		138,000		542,012
Otsuka Corp.		1,100		140,529
Otsuka Holdings Co., Ltd.		27,000		779,596
Panasonic Corp.		164,400		1,916,445
Park24 Co., Ltd.		7,000		132,012
Rakuten, Inc.		53,400		796,911
Resona Holdings, Inc.		137,656		702,385
Ricoh Co., Ltd.		52,000		553,010
Rinnai Corp.		2,900		225,934
Rohm Co., Ltd.		6,900		336,562
Sankyo Co., Ltd.		3,600		166,036
Sanrio Co., Ltd.		4,100		172,640
Santen Pharmaceutical Co., Ltd.		5,200		242,280
SBI Holdings, Inc.		16,140		245,075
Secom Co., Ltd.		16,000		965,359
Sega Sammy Holdings, Inc.		14,432		367,802
Sekisui Chemical Co., Ltd.		34,000		417,231
Sekisui House Ltd.		41,000		573,721
Seven & I Holdings Co., Ltd.		56,000		2,229,719
Seven Bank Ltd.		39,600		154,878
Sharp Corp. (a)		111,000		353,413
Shikoku Electric Power Co., Inc. (a)		12,200		182,956
Shimadzu Corp.		16,000		139,297
Shimamura Co., Ltd.		1,600		149,979
Shimano, Inc.		6,100		523,680
Shimizu Corp.		41,000		207,176
Shin-Etsu Chemical Co., Ltd.		30,700		1,795,621
Shinsei Bank Ltd.		127,000		310,884
Shionogi & Co., Ltd.		22,600		490,638
Shiseido Co., Ltd.		26,500		426,156
The Shizuoka Bank Ltd.		41,000		437,936
Showa Denko KK		101,000		143,249
Common Stocks	Shares		Value
Japan (continued)
Showa Shell Sekiyu KK		13,200	$	134,176
SMC Corp.		3,900		984,315
Softbank Corp.		71,400		6,265,404
Sojitz Corp.		87,100		155,074
Sony Corp.		74,500		1,284,253
Sony Financial Holdings, Inc.		12,300		224,053
Stanley Electric Co., Ltd.		11,400		261,352
Sumco Corp.		8,600		75,868
Sumitomo Chemical Co., Ltd.		115,000		451,356
Sumitomo Corp.		84,100		1,056,980
Sumitomo Electric Industries Ltd.		56,800		949,471
Sumitomo Heavy Industries Ltd.		38,000		175,099
Sumitomo Metal Mining Co., Ltd.		38,000		497,925
Sumitomo Mitsui Financial Group, Inc.		95,050		4,942,922
Sumitomo Mitsui Trust Holdings, Inc.		248,820		1,316,560
Sumitomo Realty & Development Co., Ltd.		26,000		1,295,513
Sumitomo Rubber Industries Ltd.		11,800		167,970
Suntory Beverage & Food Ltd.		9,700		309,450
Suruga Bank Ltd.		13,000		233,444
Suzuken Co., Ltd.		4,900		158,726
Suzuki Motor Corp.		27,300		735,643
Sysmex Corp.		5,100		301,232
T&D Holdings, Inc.		43,800		613,050
Taiheiyo Cement Corp.		92,000		353,809
Taisei Corp.		74,000		336,767
Taisho Pharmaceutical Holdings Co., Ltd.		2,400		164,973
Taiyo Nippon Sanso Corp.		18,000		128,170
Takashimaya Co., Ltd.		19,000		189,576
Takeda Pharmaceutical Co., Ltd.		59,200		2,715,210
TDK Corp.		8,800		422,171
Teijin Ltd.		63,000		140,329
Terumo Corp.		11,000		531,076
THK Co., Ltd.		8,200		204,799
Tobu Railway Co., Ltd.		80,000		387,914
Toho Co., Ltd.		9,700		213,397
Toho Gas Co., Ltd.		30,000		146,036
Tohoku Electric Power Co., Inc. (a)		32,300		363,865
Tokio Marine Holdings, Inc.		51,700		1,730,382
The Tokyo Electric Power Co., Inc. (a)		105,300		518,822
Tokyo Electron Ltd.		12,900		710,825
Tokyo Gas Co., Ltd.		178,000		877,309
Tokyo Tatemono Co., Ltd.		29,000		322,479
Tokyu Corp.		87,000		563,682
Tokyu Fudosan Holdings Corp. (a)		38,000		357,231
TonenGeneral Sekiyu KK		23,000		211,049
Toppan Printing Co., Ltd.		44,000		352,202
Toray Industries, Inc.		109,700		759,892
Toshiba Corp.		297,000		1,250,314
Toto Ltd.		23,000		364,806
Toyo Seikan Kaisha Ltd.		12,600		271,255
Toyo Suisan Kaisha Ltd.		6,000		180,245
Toyoda Gosei Co., Ltd.		4,900		114,148
Toyota Boshoku Corp.		5,000		62,516
Toyota Industries Corp.		12,100		546,975
Toyota Motor Corp.		205,100		12,505,986
Toyota Tsusho Corp.		16,400		406,702
Trend Micro, Inc.		7,500		262,823
Tsumura & Co.		4,100		108,649
Ube Industries Ltd.		87,000		186,339
Unicharm Corp.		8,600		490,703
United Urban Investment Corp.		164		235,722
USS Co., Ltd.		16,100		220,836
West Japan Railway Co.		12,600		545,938
Yahoo! Japan Corp.		108,400		604,482
Yakult Honsha Co., Ltd.		6,700		338,539
Yamada Denki Co., Ltd.		74,500		243,688
Yamaguchi Financial Group, Inc.		14,000		129,825

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 27

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Japan (concluded)
Yamaha Corp.		10,800	$	171,703
Yamaha Motor Co., Ltd.		19,800		297,681
Yamato Holdings Co., Ltd.		26,900		544,006
Yamato Kogyo Co., Ltd.		2,900		92,746
Yamazaki Baking Co., Ltd.		8,000		82,065
Yaskawa Electric Corp.		15,000		237,684
Yokogawa Electric Corp.		16,800		258,297
The Yokohama Rubber Co., Ltd.		14,000		137,669
				206,469,426
Luxembourg — 0.0%
RTL Group SA (a)		2,814		364,225
Netherlands — 2.8%
Aegon NV		133,204		1,262,311
Akzo Nobel NV		17,652		1,368,840
ASML Holding NV		26,575		2,489,058
CNH Industrial NV (a)		71,413		813,942
Corio NV		4,942		221,783
Delta Lloyd NV		14,714		365,405
Fugro NV CVA		5,429		323,848
Gemalto NV		5,974		657,551
Heineken Holding NV		7,459		472,153
Heineken NV		17,241		1,165,260
ING Groep NV CVA (a)		285,391		3,986,491
Koninklijke Ahold NV		74,228		1,333,961
Koninklijke Boskalis Westminster NV		5,964		315,457
Koninklijke DSM NV		11,409		897,870
Koninklijke KPN NV (a)		242,044		782,066
Koninklijke Philips Electronics NV		72,804		2,680,727
Koninklijke Vopak NV		4,966		290,721
OCI NV (a)		6,327		284,927
QIAGEN NV (a)		18,191		424,689
Randstad Holding NV		9,181		595,783
Reed Elsevier NV		51,965		1,104,451
STMicroelectronics NV		49,663		398,678
TNT Express NV		26,340		245,000
Unilever NV CVA		121,129		4,870,022
Wolters Kluwer NV		22,541		643,644
Ziggo NV		11,447		523,449
				28,518,087
New Zealand — 0.1%
Auckland International Airport Ltd.		82,228		238,807
Contact Energy Ltd.		25,128		106,095
Fletcher Building Ltd.		50,810		356,056
Ryman Healthcare Ltd.		29,262		189,045
Telecom Corp. of New Zealand Ltd.		133,496		253,401
				1,143,404
Norway — 0.8%
Aker Solutions ASA		12,065		216,007
DnB NOR ASA		72,188		1,295,640
Gjensidige Forsikring ASA		14,091		269,502
Norsk Hydro ASA		104,548		467,698
Orkla ASA		57,263		447,589
Seadrill Ltd.		27,803		1,139,491
Statoil ASA		82,435		2,004,531
Subsea 7 SA		19,830		380,159
Telenor ASA		50,305		1,201,967
Yara International ASA		13,077		563,987
				7,986,571
Portugal — 0.2%
Banco Espirito Santo SA, Registered Shares (a)		140,243		200,285
EDP - Energias de Portugal SA		147,157		540,521
Galp Energia SGPS SA		26,379		432,332
Jeronimo Martins SGPS SA		18,024		352,436
Common Stocks	Shares		Value
Portugal (concluded)
Portugal Telecom SGPS SA, Registered Shares		44,559	$	193,984
				1,719,558
Singapore — 1.4%
Ascendas Real Estate Investment Trust		159,962		279,956
CapitaCommercial Trust		138,000		158,927
CapitaLand Ltd.		195,749		471,835
CapitaMall Trust		190,700		288,591
CapitaMalls Asia Ltd.		100,000		155,861
City Developments Ltd.		29,535		225,677
ComfortDelGro Corp. Ltd.		158,816		253,945
DBS Group Holdings Ltd.		127,407		1,731,432
Genting Singapore PLC		464,227		552,053
Global Logistic Properties Ltd.		227,000		520,723
Golden Agri-Resources Ltd.		511,251		221,321
Hutchison Port Holdings Trust		371,000		250,730
Jardine Cycle & Carriage Ltd.		7,721		220,594
Keppel Corp. Ltd.		106,577		946,686
Keppel Land Ltd.		59,000		156,610
Noble Group Ltd.		331,840		282,607
Olam International Ltd. (b)		108,900		132,840
Oversea-Chinese Banking Corp.		191,914		1,555,507
SembCorp Industries Ltd.		70,590		307,962
SembCorp Marine Ltd.		59,197		209,302
Singapore Airlines Ltd.		43,009		355,242
Singapore Exchange Ltd.		67,000		386,361
Singapore Press Holdings Ltd.		99,985		326,726
Singapore Technologies Engineering Ltd.		119,213		375,199
Singapore Telecommunications Ltd.		600,132		1,745,253
StarHub Ltd.		44,157		150,523
United Overseas Bank Ltd.		94,572		1,597,041
UOL Group Ltd.		32,457		159,750
Wilmar International Ltd.		145,670		395,681
Yangzijiang Shipbuilding Holdings Ltd.		135,183		127,230
				14,542,165
Spain — 3.3%
Abertis Infraestructuras SA		28,895		642,707
ACS Actividades de Construccion y Servicios SA		11,543		397,904
Amadeus IT Holding SA, Class A		28,367		1,215,109
Banco Bilbao Vizcaya Argentaria SA		430,847		5,329,806
Banco de Sabadell SA		245,347		640,653
Banco Popular Espanol SA (a)		97,815		590,817
Banco Santander SA		844,958		7,598,278
Bankia SA (a)		289,400		491,289
CaixaBank SA		128,850		671,151
Distribuidora Internacional de Alimentacion SA		44,071		394,608
Enagas SA		13,781		359,985
Ferrovial SA		30,218		585,377
Gas Natural SDG SA		26,119		672,285
Grifols SA		11,062		529,354
Iberdrola SA		350,557		2,237,168
Inditex SA		16,222		2,678,431
International Consolidated Airlines Group SA (a)		72,525		483,107
Mapfre SA		82,254		352,818
Red Electrica Corp. SA		7,322		488,814
Repsol SA		62,584		1,579,189
Telefonica SA		304,567		4,979,902
Zardoya Otis SA		11,808		213,781
				33,132,533
Sweden — 3.2%
Alfa Laval AB		23,818		611,961
Assa Abloy AB, Class B		25,280		1,338,427
Atlas Copco AB, Class A		49,911		1,385,831
Atlas Copco AB, Class B		29,050		738,489
Boliden AB		19,708		302,154

See Notes to Financial Statements.

28 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Sweden (concluded)
Electrolux AB, Class B		17,162	$	448,487
Elekta AB, B Shares		27,383		419,045
Getinge AB, Class B		15,355		526,338
Hennes & Mauritz AB, Class B		70,793		3,260,474
Hexagon AB, Class B		17,051		539,361
Husqvarna AB, Class B		29,922		180,173
Industrivarden AB, Class C		10,166		193,433
Investment AB Kinnevik, Class B		16,724		775,343
Investor AB, Class B		33,852		1,166,659
Lundin Petroleum AB (a)		15,784		307,164
Millicom International Cellular SA		4,886		486,869
Nordea Bank AB		225,836		3,044,901
Sandvik AB		81,442		1,149,447
Scania AB, Class B		24,670		483,516
Securitas AB, Class B		22,513		239,547
Skandinaviska Enskilda Banken AB, Class A		112,821		1,490,509
Skanska AB, Class B		27,293		558,364
SKF AB, Class B		29,096		763,054
Svenska Cellulosa AB, B Shares		43,168		1,329,913
Svenska Handelsbanken AB, Class A		37,337		1,835,741
Swedbank AB, Class A		67,675		1,906,357
Swedish Match AB		14,574		468,570
Tele2 AB, Class B		22,260		252,822
Telefonaktiebolaget LM Ericsson, Class B		226,266		2,762,592
TeliaSonera AB		175,688		1,465,310
Volvo AB, Class B		113,612		1,494,950
				31,925,801
Switzerland — 9.2%
ABB Ltd., Registered Shares		163,900		4,333,516
Actelion Ltd., Registered Shares (a)		8,074		684,843
Adecco SA, Registered Shares (a)		9,897		785,690
Aryzta AG		6,602		507,290
Baloise Holding AG, Registered Shares		3,672		468,232
Barry Callebaut AG, Registered Shares		174		218,653
Cie Financiere Richemont SA, Registered Shares		38,813		3,877,317
Coca-Cola HBC AG (a)		1,391		40,711
Coca-Cola HBC AG ADR		13,591		396,449
Credit Suisse Group AG, Registered Shares		113,057		3,489,318
EMS-Chemie Holding AG, Registered Shares		575		205,030
Geberit AG, Registered Shares		2,806		851,287
Givaudan SA, Registered Shares		607		868,353
Glencore Xstrata PLC (a)		788,975		4,104,685
Holcim Ltd., Registered Shares (a)		17,017		1,272,270
Julius Baer Group Ltd.		17,092		821,373
Kuehne & Nagel International AG, Registered Shares		4,111		540,347
Lindt & Spruengli AG		62		279,471
Lindt & Spruengli AG, Registered Shares		8		431,366
Lonza Group AG, Registered Shares (a)		3,900		370,629
Nestle SA, Registered Shares		239,820		17,576,412
Novartis AG, Registered Shares		171,062		13,710,501
Pargesa Holding SA, Bearer Shares		2,037		164,068
Partners Group Holding AG		1,231		328,294
Roche Holding AG		52,247		14,635,752
Schindler Holding AG, Participation Certificates		3,448		507,593
Schindler Holding AG, Registered Shares		1,514		223,351
SGS SA, Registered Shares		402		925,505
Sika AG		161		573,715
Sonova Holding AG, Registered Shares		3,804		512,949
Sulzer AG, Registered Shares		1,732		279,859
The Swatch Group AG, Bearer Shares		2,298		1,523,122
The Swatch Group AG, Registered Shares		3,248		366,124
Swiss Life Holding AG, Registered Shares (a)		2,392		497,296
Swiss Prime Site AG, Registered Shares		3,972		307,587
Swiss Re AG (a)		26,189		2,414,322
Swisscom AG, Registered Shares		1,727		912,709
Syngenta AG, Registered Shares		6,916		2,757,387
Common Stocks	Shares		Value
Switzerland (concluded)
Transocean Ltd.		27,057	$	1,324,159
UBS AG, Registered Shares (a)		271,218		5,193,103
Wolseley PLC		19,731		1,121,769
Zurich Insurance Group AG (a)		11,049		3,204,916
				93,607,323
United Kingdom — 20.7%
3i Group PLC		70,067		447,724
Aberdeen Asset Management PLC		73,333		609,812
Admiral Group PLC		14,967		325,340
Aggreko PLC		20,368		577,649
AMEC PLC		21,725		392,240
Anglo American PLC		103,856		2,272,921
Antofagasta PLC		30,354		416,138
ARM Holdings PLC		103,058		1,873,891
Associated British Foods PLC		26,231		1,063,816
AstraZeneca PLC		93,138		5,525,593
Aviva PLC		221,118		1,654,283
Babcock International Group PLC		27,208		611,365
BAE Systems PLC		240,586		1,735,778
Barclays PLC		1,136,310		5,138,260
BG Group PLC		253,167		5,447,736
BHP Billiton PLC		157,050		4,873,245
BP PLC		1,401,752		11,359,956
British American Tobacco PLC		141,502		7,594,990
British Land Co. PLC		72,069		751,354
British Sky Broadcasting Group PLC		75,937		1,061,312
BT Group PLC		588,023		3,708,037
Bunzl PLC		24,510		589,001
Burberry Group PLC		32,570		820,611
The Capita Group PLC		49,602		853,809
Capital Shopping Centres Group PLC		47,929		246,036
Carnival PLC		13,871		574,232
Centrica PLC		382,925		2,208,184
Cobham PLC		76,587		348,634
Compass Group PLC		134,429		2,158,241
Croda International PLC		10,030		408,852
Diageo PLC		186,717		6,187,535
Direct Line Insurance Group PLC		88,616		366,272
easyJet PLC		11,381		290,068
Experian PLC		74,703		1,379,940
Fresnillo PLC		14,993		186,422
G4S PLC		112,138		487,929
GKN PLC		124,794		773,314
GlaxoSmithKline PLC		364,295		9,733,040
Hammerson PLC		54,580		454,388
Hargreaves Lansdown PLC		16,465		369,833
HSBC Holdings PLC		1,387,381		15,225,321
ICAP PLC		39,581		296,458
IMI PLC		23,461		594,125
Imperial Tobacco Group PLC		72,350		2,804,872
Inmarsat PLC		34,560		433,322
InterContinental Hotels Group PLC		19,592		653,518
Intertek Group PLC		12,142		633,707
Invensys PLC		47,023		397,468
Investec PLC		44,955		326,498
ITV PLC		280,940		904,105
J. Sainsbury PLC		92,923		562,391
Johnson Matthey PLC		15,552		846,229
Kingfisher PLC		177,342		1,132,158
Land Securities Group PLC		57,628		920,579
Legal & General Group PLC		439,732		1,625,451
Lloyds Banking Group PLC (a)		3,714,728		4,874,415
London Stock Exchange Group PLC		12,540		360,731
Marks & Spencer Group PLC		118,310		849,571
Meggitt PLC		57,779		505,880
Melrose Industries PLC		95,208		483,021

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 29

Schedule of Investments (continued) Master International Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
United Kingdom (continued)
National Grid PLC		276,142	$	3,611,719
Next PLC		11,551		1,044,112
Old Mutual PLC		364,246		1,142,860
Pearson PLC		60,830		1,356,255
Persimmon PLC (a)		23,691		487,068
Petrofac Ltd.		18,345		371,832
Prudential PLC		190,300		4,252,061
Randgold Resources Ltd.		6,652		418,295
Reckitt Benckiser Group PLC		48,087		3,819,833
Reed Elsevier PLC		88,205		1,315,455
Resolution Ltd.		103,825		609,429
Rexam PLC		60,750		534,490
Rio Tinto PLC		94,538		5,342,308
Rolls-Royce Holdings PLC (a)		139,797		2,956,897
Royal Bank of Scotland Group PLC (a)		159,698		899,389
Royal Dutch Shell PLC, Class A		284,193		10,184,981
Royal Dutch Shell PLC, Class B		186,875		7,048,956
RSA Insurance Group PLC		270,691		409,701
SABMiller PLC		71,528		3,681,909
The Sage Group PLC		83,955		562,009
Schroders PLC		7,851		338,608
Segro PLC		52,071		288,223
Serco Group PLC		38,098		314,937
Severn Trent PLC		18,244		515,811
Smith & Nephew PLC		66,782		953,826
Smiths Group PLC		29,585		726,478
SSE PLC		71,075		1,615,122
Standard Chartered PLC		180,208		4,070,349
Standard Life PLC		176,596		1,054,613
Tate & Lyle PLC		35,338		474,038
Tesco PLC		600,883		3,336,903
Travis Perkins PLC		18,654		579,468
Tui Travel PLC		31,441		215,510
Tullow Oil PLC		67,721		961,137
Unilever PLC		95,432		3,926,626
United Utilities Group PLC		51,724		575,872
Vodafone Group PLC		3,603,092		14,186,057
Common Stocks	Shares		Value
United Kingdom (concluded)
The Weir Group PLC		16,177	$	572,765
Whitbread PLC		13,356		831,202
William Hill PLC		61,664		411,073
WM Morrison Supermarkets PLC		168,238		728,271
WPP PLC		98,943		2,266,184
				209,300,233
Total Common Stocks — 97.4%				986,256,244
Preferred Stocks — 0.0%
Germany — 0.0%
Fuchs Petrolub SE, Preference Shares		2,547		249,519
Rights — 0.0%
Spain — 0.0%
Repsol SA, (Expires 01/09/14) (a)		62,584		42,704
Total Long-Term Investments (Cost — $684,439,924) — 97.4%				986,548,467
Short-Term Securities
BlackRock Liquidity Funds, TempCash, Institutional Class, 0.15% (c)(d)		587,542		587,542
	Beneficial Interest (000)
BlackRock Liquidity Series, LLC, Money Market Series, 0.19% (c)(d)(e)	$	529		528,856
Total Short-Term Securities (Cost — $1,116,398) — 0.1%				1,116,398
Total Investments (Cost — $685,556,322*) — 97.5%				987,664,865
Other Assets Less Liabilities — 2.5%				25,149,144
Net Assets — 100.0%			$	1,012,814,009

Notes to Schedule of Investments

* As of December 31, 2013, gross unrealized appreciation and depreciation based on cost for federal income tax purposes were as follows:

Tax cost	$	730,680,270
Gross unrealized appreciation	$	319,181,483
Gross unrealized depreciation		(62,196,888	)
Net unrealized appreciation	$	256,984,595

(a) Non-income producing security.

(b) Security, or a portion of security, is on loan.

(c) Investments in issuers considered to be an affiliate of the Series during the year ended December 31, 2013, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliate	Shares/Beneficial Interest Held at December 31, 2012		Net Activity			Shares/Beneficial Interest Held at December 31, 2013		Income
BlackRock Liquidity Funds, TempCash, Institutional Class		—		587,542	1		587,542	$	2,127
BlackRock Liquidity Series, LLC, Money Market Series		—	$	528,856	1	$	528,856	$	11,250

¹ Represents net shares/beneficial interest purchased.

(d) Represents the current yield as of report date.

(e) Security was purchased with the cash collateral from loaned securities. The Series may withdraw up to 25% of its investment daily, although the manager of the BlackRock Liquidity Series, LLC, Money Market Series, in its sole discretion, may permit an investor to withdraw more than 25% on any one day.

See Notes to Financial Statements.

30 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master International Index Series

Ÿ Financial futures contracts outstanding as of December 31, 2013 were as follows:

Contracts Purchased		Issue	Exchange	Expiration	Notional Value		Unrealized Appreciation
	64	Nikkei 225 Index	Singapore Exchange	March 2014	$	4,939,322	$	154,671
	28	SPI 200 Index	Australian Securities Exchange	March 2014	$	3,323,910		113,554
	173	Euro Stoxx 50 Index	Eurex Mercantile	March 2014	$	7,396,916		264,515
	70	FTSE 100 Index	Euronext Liffe	March 2014	$	7,763,507		225,975
	Total						$	758,715

Ÿ Foreign currency exchange contracts outstanding as of December 31, 2013 were as follows:

Currency Purchased		Currency Sold		Counterparty	Settlement Date		Unrealized Appreciation
USD	110,231	EUR	80,000	Deutsche Bank Securities, Inc.		1/02/14	$	175

Ÿ Fair Value Measurements — Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a disclosure hierarchy consisting of three broad levels for financial statement purposes as follows:

Ÿ Level 1 — unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Series has the ability to access

Ÿ Level 2 — other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

Ÿ Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Series’ own assumptions used in determining the fair value of investments and derivative financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Changes in valuation techniques may result in transfers into or out of an assigned level within the disclosure hierarchy. In accordance with the Series’ policy, transfers between different levels of the fair value disclosure hierarchy are deemed to have occurred as of the beginning of the reporting period. The categorization of a value determined for investments and derivative financial instruments is based on the pricing transparency of the investment and derivative financial instrument and is not necessarily an indication of the risks associated with investing in those securities. For information about the Series’ policy regarding valuation of investments and derivative financial instruments, please refer to Note 2 of the Notes to Financial Statements.

The following tables summarize the Series’ investments and derivative financial instruments categorized in the disclosure hierarchy as of December 31, 2013:

	Level 1		Level 2		Level 3		Total
Assets:
Investments:
Long-Term Investments:
Common Stocks:
Australia	$	1,063,976	$	71,900,776	$	11	$	72,964,763
Austria		653,135		1,957,459		1		2,610,595
Belgium		211,892		11,508,518		—		11,720,410
Denmark		6,237,410		5,297,037		—		11,534,447
Finland		1,036,083		7,861,772		—		8,897,855
France		580,677		97,931,718		—		98,512,395
Germany		867,820		91,697,901		—		92,565,721
Hong Kong		268,335		27,766,990		—		28,035,325
Ireland		755,005		4,372,738		—		5,127,743
Israel		—		4,397,925		—		4,397,925
Italy		—		21,179,739		—		21,179,739
Japan		627,959		205,841,467		—		206,469,426
Luxembourg		—		364,225		—		364,225
Netherlands		1,098,868		27,419,219		—		28,518,087
New Zealand		—		1,143,404		—		1,143,404
Norway		—		7,986,571		—		7,986,571
Portugal		—		1,719,558		—		1,719,558
Singapore		—		14,542,165		—		14,542,165
Spain		491,289		32,641,244		—		33,132,533
Sweden		—		31,925,801		—		31,925,801
Switzerland		1,435,580		92,171,743		—		93,607,323
United Kingdom		2,524,054		206,776,179		—		209,300,233
Preferred Stocks		—		249,519		—		249,519
Rights		42,704		—		—		42,704
Short-Term Securities		587,542		528,856		—		1,116,398
Total	$	18,482,329	$	969,182,524	$	12	$	987,664,865

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 31

Schedule of Investments (concluded) Master International Index Series

	Level 1		Level 2		Level 3		Total
Derivative Financial Instruments 1
Assets:
Equity contracts	$	758,715		—		—	$	758,715
Foreign currency exchange contracts		175		—		—		175
Total	$	758,890		—		—	$	758,890
1   Derivative financial instruments are financial futures contracts and foreign currency exchange contracts. Financial futures contracts and foreign currency exchange contracts are valued at the unrealized appreciation/depreciation on the instrument.

The carrying amount for certain of the Series’ assets and/or liabilities approximates fair value for financial statement purposes. As of December 31, 2013, such assets and/or liabilities are categorized within the disclosure hierarchy as follows:

	Level 1		Level 2			Level 3		Total
Assets:
Cash pledged for financial futures contracts	$	1,604,000		—			—	$	1,604,000
Foreign currency at value		19,997,903		—			—		19,997,903
Liabilities:
Bank overdraft		—	$	(1,018,673	)		—		(1,018,673	)
Collateral on securities loaned at value				(528,856	)				(528,856	)
Total	$	21,601,903	$	(1,547,529	)		—	$	20,054,374

Certain foreign securities are fair valued utilizing an external pricing service to reflect any significant market movements between the time the Series values such foreign securities and the earlier closing of foreign markets. Such fair valuations are categorized as Level 2 in the disclosure hierarchy. As of December 31, 2012, securities with a value of $11,767,681 were systematically fair valued due to significant market movements, but were not valued using systematic fair values as of December 31, 2013. Therefore, these securities were transferred from Level 2 to Level 1 during the year ended December 31, 2013.

See Notes to Financial Statements.

32 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments December 31, 2013 Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Advertising Agencies — 0.5%
Constant Contact, Inc. (a)		15,206	$	472,450
Digital Generation, Inc. (a)		12,141		154,798
Harte-Hanks, Inc.		21,119		165,151
Marchex, Inc., Class B (a)		10,966		94,856
Marin Software, Inc. (a)		4,389		44,943
Marketo, Inc. (a)		3,389		125,630
MDC Partners, Inc., Class A		18,726		477,688
National CineMedia, Inc.		29,912		597,044
QuinStreet, Inc. (a)		15,113		131,332
ReachLocal, Inc. (a)		5,016		63,753
Valassis Communications, Inc.		19,244		659,107
ValueClick, Inc. (a)		33,035		772,028
Viad Corp.		10,139		281,661
				4,040,441
Aerospace — 1.4%
AAR Corp.		19,683		551,321
Aerovironment, Inc. (a)		9,191		267,734
API Technologies Corp. (a)		15,396		52,500
Astronics Corp. (a)		7,443		379,593
Cubic Corp.		9,839		518,122
Curtiss-Wright Corp.		23,144		1,440,251
Ducommun, Inc. (a)		5,313		158,380
Erickson Air-Crane, Inc. (a)(b)		1,802		37,464
Esterline Technologies Corp. (a)		15,460		1,576,302
GenCorp, Inc. (a)		29,928		539,303
HEICO Corp.		32,789		1,900,123
Kaman Corp.		13,417		533,057
Kratos Defense & Security Solutions, Inc. (a)		21,993		168,906
LMI Aerospace, Inc. (a)		5,034		74,201
Moog, Inc., Class A (a)		22,380		1,520,497
Orbital Sciences Corp. (a)		29,675		691,427
Teledyne Technologies, Inc. (a)		18,457		1,695,460
				12,104,641
Agriculture, Fishing & Ranching — 0.5%
Alico, Inc.		1,389		53,991
The Andersons, Inc.		9,247		824,555
Cal-Maine Foods, Inc.		7,379		444,437
Calavo Growers, Inc.		6,105		184,737
Fresh Del Monte Produce, Inc.		18,772		531,248
Limoneira Co.		4,843		128,775
Pilgrim’s Pride Corp. (a)		29,956		486,785
Sanderson Farms, Inc.		11,388		823,694
Seaboard Corp. (a)		144		402,476
				3,880,698
Air Transport — 0.8%
Air Transport Services Group, Inc. (a)		25,781		208,568
Allegiant Travel Co.		7,416		781,943
Atlas Air Worldwide Holdings, Inc. (a)		12,803		526,843
Bristow Group, Inc.		17,849		1,339,746
Era Group, Inc. (a)		9,979		307,952
Hawaiian Holdings, Inc. (a)		25,811		248,560
JetBlue Airways Corp. (a)		114,969		982,985
PHI, Inc. (a)		6,241		270,859
Republic Airways Holdings, Inc. (a)		24,369		260,505
SkyWest, Inc.		25,739		381,709
Spirit Airlines, Inc. (a)		29,794		1,352,946
				6,662,616
Alternative Energy — 0.1%
Ameresco, Inc., Class A (a)		9,514		91,905
Amyris, Inc. (a)(b)		12,802		67,723
EnerNOC, Inc. (a)		13,041		224,436
Green Plains Renewable Energy, Inc.		12,525		242,860
REX American Resources Corp. (a)		2,643		118,168
Common Stocks	Shares		Value
Alternative Energy (concluded)
Solazyme, Inc. (a)(b)		24,022	$	261,599
				1,006,691
Aluminum — 0.1%
Century Aluminum Co. (a)		25,577		267,535
Kaiser Aluminum Corp.		9,350		656,744
Noranda Aluminum Holding Corp.		16,676		54,864
				979,143
Asset Management & Custodian — 1.2%
Apollo Investment Corp.		111,476		945,316
Arlington Asset Investment Corp.		6,742		177,921
Calamos Asset Management, Inc., Class A		9,690		114,730
Capital Southwest Corp.		6,776		236,279
CIFC Corp.		3,260		25,363
Cohen & Steers, Inc.		9,323		373,479
Cowen Group, Inc., Class A (a)		48,559		189,866
Diamond Hill Investment Group, Inc.		1,405		166,268
Fifth Street Finance Corp.		67,934		628,389
Financial Engines, Inc.		24,171		1,679,401
GAMCO Investors, Inc., Class A		2,983		259,432
Golub Capital BDC, Inc.		18,607		355,580
GSV Capital Corp. (a)(b)		9,389		113,513
Horizon Technology Finance Corp.		4,080		57,977
JMP Group, Inc.		7,472		55,293
KCAP Financial, Inc.		13,867		111,907
KCG Holdings, Inc., Class A (a)		35,142		420,298
Manning & Napier, Inc.		6,578		116,102
MCG Capital Corp.		36,063		158,677
Medley Capital Corp.		20,140		278,939
MVC Capital, Inc.		10,938		147,663
New Mountain Finance Corp.		22,629		340,340
NGP Capital Resources Co.		10,231		76,426
Oppenheimer Holdings, Inc., Class A		4,788		118,647
Pzena Investment Management, Inc., Class A		5,547		65,233
RCS Capital Corp., Class A		902		16,552
Resource America, Inc., Class A		5,795		54,241
Silvercrest Asset Management Group, Inc., Class A		2,664		45,421
Solar Capital Ltd.		22,506		507,510
Solar Senior Capital Ltd.		5,624		102,469
TCP Capital Corp.		17,803		298,734
THL Credit, Inc.		17,037		280,940
TICC Capital Corp.		26,213		271,042
Virtus Investment Partners, Inc. (a)		3,336		667,367
Westwood Holdings Group, Inc.		3,472		214,952
WhiteHorse Finance, Inc.		3,247		49,062
WisdomTree Investments, Inc. (a)		49,689		879,992
				10,601,321
Auto Parts — 0.8%
American Axle & Manufacturing Holdings, Inc. (a)		33,250		679,963
Dana Holding Corp.		72,618		1,424,765
Dorman Products, Inc. (a)		12,463		698,800
Federal-Mogul Corp. (a)		9,843		193,710
Fox Factory Holding Corp. (a)		4,779		84,206
Fuel Systems Solutions, Inc. (a)		6,784		94,094
Gentherm, Inc. (a)		16,532		443,223
Meritor, Inc. (a)		48,250		503,248
Remy International, Inc.		6,773		157,946
Standard Motor Products, Inc.		9,800		360,640
Stoneridge, Inc. (a)		14,193		180,961
Superior Industries International, Inc.		11,596		239,225
Tenneco, Inc. (a)		30,068		1,700,947
Tower International, Inc. (a)		2,943		62,980
				6,824,708
Auto Services — 0.1%
Cooper Tire & Rubber Co.		31,353		753,726

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 33

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Back Office Support, HR & Consulting — 2.1%
The Advisory Board Co. (a)		17,541	$	1,116,835
Angie’s List, Inc. (a)(b)		20,960		317,544
Barrett Business Services, Inc.		3,492		323,848
CBIZ, Inc. (a)(b)		17,287		157,657
CDI Corp.		7,190		133,231
Convergys Corp.		51,934		1,093,211
The Corporate Executive Board Co.		16,613		1,286,345
CoStar Group, Inc. (a)		14,097		2,602,024
CRA International, Inc. (a)		4,865		96,327
Dice Holdings, Inc. (a)		19,375		140,469
ExlService Holdings, Inc. (a)		16,171		446,643
Forrester Research, Inc.		6,236		238,589
FTI Consulting, Inc. (a)		19,935		820,126
GP Strategies Corp. (a)		7,306		217,646
The Hackett Group, Inc.		12,500		77,625
Heidrick & Struggles International, Inc.		9,051		182,287
Huron Consulting Group, Inc. (a)		11,516		722,284
ICF International, Inc. (a)		9,758		338,700
Innovative Solutions & Support, Inc. (a)		6,095		44,433
Insperity, Inc.		11,170		403,572
Kelly Services, Inc., Class A		13,425		334,819
Kforce, Inc.		13,569		277,622
Korn/Ferry International (a)		24,121		630,041
Liquidity Services, Inc. (a)(b)		12,341		279,647
MAXIMUS, Inc.		33,752		1,484,750
Monster Worldwide, Inc. (a)(b)		52,078		371,316
Navigant Consulting, Inc. (a)		24,935		478,752
On Assignment, Inc. (a)		22,650		790,938
PRGX Global, Inc. (a)		13,940		93,677
Resources Connection, Inc.		20,287		290,713
RPX Corp. (a)		16,069		271,566
ServiceSource International, Inc. (a)		30,279		253,738
Sykes Enterprises, Inc. (a)		19,450		424,204
TeleTech Holdings, Inc. (a)		9,867		236,216
TrueBlue, Inc. (a)		20,167		519,905
WageWorks, Inc. (a)		12,338		733,371
				18,230,671
Banks: Diversified — 7.3%
1st Source Corp.		7,583		242,201
1st United Bancorp, Inc.		14,548		110,710
Access National Corp.		3,636		54,358
Ambac Financial Group, Inc. (a)		20,755		509,743
American National Bankshares, Inc.		3,902		102,427
Ameris Bancorp (a)		11,937		251,990
Ames National Corp.		4,575		102,434
Arrow Financial Corp.		5,540		147,142
Bancfirst Corp.		3,592		201,368
Banco Latinoamericano de Comercio Exterior SA		14,702		411,950
The Bancorp, Inc. (a)		16,355		292,918
BancorpSouth, Inc.		47,142		1,198,350
Bank of Kentucky Financial Corp.		3,031		111,844
Bank of Marin Bancorp		3,048		132,253
Bank of the Ozarks, Inc.		15,436		873,523
Banner Corp.		9,716		435,471
Bar Harbor Bankshares		1,958		78,300
BBCN Bancorp, Inc.		39,201		650,345
BBX Capital Corp. (a)		3,493		54,491
BNC Bancorp		9,263		158,768
Boston Private Financial Holdings, Inc.		39,679		500,749
Bridge Bancorp, Inc.		5,742		149,292
Bridge Capital Holdings (a)		4,700		96,538
Bryn Mawr Bank Corp.		6,844		206,552
C&F Financial Corp.		1,600		73,072
Camden National Corp.		3,915		165,291
Capital City Bank Group, Inc. (a)		6,067		71,409
Capitol Federal Financial, Inc.		73,946		895,486
Common Stocks	Shares		Value
Banks: Diversified (continued)
Cardinal Financial Corp.		15,181	$	273,258
Cascade Bancorp (a)		3,048		15,941
Cathay General Bancorp		39,084		1,044,715
Center Bancorp, Inc.		5,783		108,489
Centerstate Banks, Inc.		14,779		150,007
Central Pacific Financial Corp.		10,999		220,860
Century Bancorp, Inc., Class A		1,631		54,231
Charter Financial Corp.		10,947		117,899
Chemical Financial Corp.		14,721		466,214
Chemung Financial Corp.		1,799		61,472
Citizens & Northern Corp.		6,429		132,630
City Holding Co.		7,855		363,922
CNB Financial Corp.		7,128		135,432
CoBiz Financial, Inc.		17,763		212,445
Columbia Banking System, Inc.		25,366		697,819
Community Bank System, Inc.		19,907		789,910
Community Trust Bancorp, Inc.		7,060		318,830
CommunityOne Bancorp (a)		5,236		66,759
CU Bancorp (a)		4,598		80,373
Customers Bancorp, Inc. (a)		10,043		205,480
CVB Financial Corp.		45,648		779,211
Eagle Bancorp, Inc. (a)		11,079		339,350
Enterprise Bancorp, Inc.		3,579		75,767
Enterprise Financial Services Corp.		9,721		198,503
EverBank Financial Corp.		39,786		729,675
Farmers Capital Bank Corp. (a)		3,635		79,061
Fidelity Southern Corp.		7,124		118,330
Financial Institutions, Inc.		6,979		172,451
First Bancorp, Inc.		4,751		82,762
First Bancorp, North Carolina		9,676		160,815
First BanCorp, Puerto Rico (a)		36,101		223,465
First Busey Corp.		36,699		212,854
First Commonwealth Financial Corp.		48,770		430,151
First Community Bancshares, Inc.		8,706		145,390
First Connecticut Bancorp, Inc.		8,247		132,942
First Financial Bancorp		29,055		506,429
First Financial Bankshares, Inc.		15,648		1,037,775
First Financial Corp.		5,724		209,269
First Financial Holdings, Inc.		11,938		793,996
First Interstate Bancsystem, Inc.		8,825		250,365
First Merchants Corp.		17,413		396,320
First Midwest Bancorp, Inc.		37,306		653,974
First NBC Bank Holding Co. (a)		2,082		67,249
The First of Long Island Corp.		4,022		172,423
First Security Group, Inc. (a)		31,778		73,089
FirstMerit Corp.		82,062		1,824,238
Flagstar Bancorp, Inc. (a)		9,986		195,925
FNB Corp.		74,645		942,020
German American Bancorp, Inc.		6,387		182,029
Glacier Bancorp, Inc.		35,701		1,063,533
Guaranty Bancorp		7,158		100,570
Hampton Roads Bankshares, Inc. (a)		17,184		30,072
Hancock Holding Co.		41,955		1,538,909
Hanmi Financial Corp.		15,749		344,746
Heartland Financial USA, Inc.		7,484		215,464
Heritage Commerce Corp.		10,154		83,669
Heritage Oaks Bancorp (a)		9,840		73,800
Home BancShares, Inc.		22,407		836,901
Horizon Bancorp		4,269		108,134
Hudson Valley Holding Corp.		8,325		169,414
Iberiabank Corp.		14,751		927,100
Independent Bank Corp.		11,855		464,597
Independent Bank Group, Inc.		1,891		93,907
International Bancshares Corp.		26,583		701,525
Intervest Bancshares Corp. (a)		8,775		65,900
Investors Bancorp, Inc.		24,998		639,459
Janus Capital Group, Inc.		73,868		913,747

See Notes to Financial Statements.

34 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Banks: Diversified (continued)
Lakeland Bancorp, Inc.		18,004	$	222,709
Lakeland Financial Corp.		8,231		321,009
LCNB Corp.		3,650		65,225
Macatawa Bank Corp. (a)		11,650		58,250
MainSource Financial Group, Inc.		10,259		184,970
MB Financial, Inc.		27,206		873,041
Mercantile Bank Corp.		4,249		91,693
Merchants Bancshares, Inc.		2,817		94,369
Meridian Interstate Bancorp, Inc. (a)		4,034		91,088
Metro Bancorp, Inc. (a)		6,904		148,712
MetroCorp Bancshares, Inc.		7,804		117,606
Middleburg Financial Corp.		2,600		46,904
MidSouth Bancorp, Inc.		4,076		72,797
NASB Financial, Inc.		2,024		61,125
National Bank Holdings Corp., Class A		22,642		484,539
National Bankshares, Inc.		3,441		126,938
National Penn Bancshares, Inc.		58,427		661,978
NBT Bancorp, Inc.		21,898		567,158
NewBridge Bancorp (a)		12,256		91,920
Northrim BanCorp, Inc.		3,211		84,257
OFG Bancorp		22,703		393,670
Old National Bancorp		50,421		774,971
Pacific Continental Corp.		8,778		139,921
Pacific Premier Bancorp, Inc. (a)		7,994		125,826
PacWest Bancorp		18,871		796,734
Palmetto Bancshares, Inc. (a)		2,200		28,512
Park National Corp.		5,779		491,620
Park Sterling Corp.		22,514		160,750
Peapack Gladstone Financial Corp.		4,436		84,728
Penns Woods Bancorp, Inc.		2,391		121,941
Peoples Bancorp, Inc.		5,327		119,911
Pinnacle Financial Partners, Inc.		17,420		566,673
Preferred Bank (a)		5,701		114,305
PrivateBancorp, Inc.		32,189		931,228
Prosperity Bancshares, Inc.		29,827		1,890,734
Provident Financial Services, Inc.		29,670		573,224
Renasant Corp.		15,223		478,916
Republic Bancorp, Inc., Class A		4,865		119,387
Rockville Financial, Inc.		13,098		186,123
S&T Bancorp, Inc.		14,831		375,373
Sandy Spring Bancorp, Inc.		12,463		351,332
Seacoast Banking Corp. of Florida (a)		8,957		109,280
Sierra Bancorp		5,953		95,784
Simmons First National Corp., Class A		8,275		307,416
Southside Bancshares, Inc.		9,012		246,388
Southwest Bancorp, Inc. (a)		9,942		158,277
State Bank Financial Corp.		16,015		291,313
StellarOne Corp.		11,348		273,146
Stellus Capital Investment Corp.		5,764		86,172
Sterling Financial Corp.		16,794		572,340
Suffolk Bancorp (a)		5,661		117,749
Sun Bancorp, Inc. (a)		19,879		69,974
Susquehanna Bancshares, Inc.		92,458		1,187,161
SY Bancorp, Inc.		7,062		225,419
Taylor Capital Group, Inc. (a)		8,654		230,023
Texas Capital Bancshares, Inc. (a)(b)		20,207		1,256,875
Tompkins Financial Corp.		7,242		372,166
TowneBank		13,312		204,872
Trico Bancshares		8,032		227,868
Tristate Capital Holdings, Inc. (a)		3,203		37,988
TrustCo Bank Corp. NY		47,087		338,085
Trustmark Corp.		33,425		897,127
UMB Financial Corp.		17,678		1,136,342
Umpqua Holdings Corp.		55,556		1,063,342
Union First Market Bankshares Corp.		10,171		252,343
United Bankshares, Inc.		10,792		339,408
Common Stocks	Shares		Value
Banks: Diversified (concluded)
United Community Banks, Inc. (a)		20,740	$	368,135
United Community Financial Corp. (a)		23,858		85,173
Univest Corp. of Pennsylvania		8,567		177,166
VantageSouth Bancshares, Inc. (a)		5,886		31,019
Virginia Commerce Bancorp, Inc. (a)		13,441		228,363
Washington Banking Co.		7,920		140,422
Washington Trust Bancorp, Inc.		7,283		271,073
Webster Financial Corp.		44,726		1,394,557
WesBanco, Inc.		12,935		413,920
West BanCorp., Inc.		7,044		111,436
Westamerica BanCorp.		13,465		760,234
Western Alliance Bancorp (a)		36,699		875,638
Wilshire Bancorp, Inc. (b)		33,671		368,024
Wintrust Financial Corp.		18,396		848,424
Yadkin Financial Corp. (a)		7,017		119,570
				62,935,115
Banks: Savings, Thrift & Mortgage Lending — 1.0%
Apollo Residential Mortgage, Inc.		15,550		229,829
Astoria Financial Corp.		43,819		606,017
Banc of California, Inc.		8,473		113,623
Bank Mutual Corp.		22,798		159,814
BankFinancial Corp.		10,098		92,498
Beneficial Mutual Bancorp, Inc. (a)		15,591		170,254
Berkshire Hills Bancorp, Inc.		12,585		343,193
BofI Holding, Inc. (a)		5,988		469,639
Brookline Bancorp, Inc.		35,068		335,601
Clifton Savings Bancorp, Inc.		4,201		53,773
Dime Community Bancshares, Inc.		15,948		269,840
Doral Financial Corp. (a)		3,224		50,488
ESB Financial Corp.		6,202		88,068
ESSA Bancorp, Inc.		4,202		48,575
First Defiance Financial Corp.		4,747		123,280
First Federal Bancshares of Arkansas, Inc. (a)		1,552		13,502
First Financial Northwest, Inc.		7,377		76,499
Flushing Financial Corp.		15,391		318,594
Fox Chase Bancorp, Inc.		5,936		103,168
Franklin Financial Corp. (a)		5,138		101,630
Great Southern Bancorp, Inc.		5,246		159,531
Heritage Financial Corp.		7,858		134,450
Hingham Institution for Savings		593		46,545
Home Bancorp, Inc. (a)		3,121		58,831
Home Federal Bancorp, Inc.		7,055		105,120
Home Loan Servicing Solutions Ltd.		35,287		810,542
HomeStreet, Inc.		6,263		125,260
Kearny Financial Corp. (a)		6,957		80,910
Northfield Bancorp, Inc.		29,067		383,684
Northwest Bancshares, Inc.		46,590		688,600
OceanFirst Financial Corp.		6,773		116,021
OmniAmerican Bancorp, Inc. (a)		5,579		119,279
Oritani Financial Corp.		22,744		365,041
Provident Financial Holdings, Inc.		4,463		66,945
Sterling Bancorp		41,547		555,483
Territorial Bancorp, Inc.		5,142		119,294
United Financial Bancorp, Inc.		9,919		187,370
ViewPoint Financial Group, Inc.		19,878		545,651
Waterstone Financial, Inc. (a)		3,518		39,050
Westfield Financial, Inc.		8,785		65,536
WSFS Financial Corp.		3,909		303,065
				8,844,093
Beverage: Brewers & Distillers — 0.1%
The Boston Beer Co., Inc., Class A (a)		4,069		983,843
Craft Brew Alliance, Inc. (a)		5,092		83,611
				1,067,454

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 35

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Beverage: Soft Drinks — 0.0%
Coca-Cola Bottling Co. Consolidated		2,340	$	171,264
Farmer Bros Co. (a)		2,849		66,268
National Beverage Corp. (a)		5,448		109,832
				347,364
Biotechnology — 4.1%
Acceleron Pharma, Inc. (a)		3,118		123,473
Accelrys, Inc. (a)		27,702		264,277
Acorda Therapeutics, Inc. (a)		20,106		587,095
Aegerion Pharmaceuticals, Inc. (a)		14,255		1,011,535
Albany Molecular Research, Inc. (a)		11,255		113,450
Alimera Sciences, Inc. (a)		8,369		39,418
Alnylam Pharmaceuticals, Inc. (a)		28,730		1,848,201
AMAG Pharmaceuticals, Inc. (a)		10,697		259,616
Amicus Therapeutics, Inc. (a)		14,954		35,142
Arena Pharmaceuticals, Inc. (a)(b)		107,844		630,887
Arqule, Inc. (a)		28,755		61,823
Array BioPharma, Inc. (a)		61,436		307,794
AVEO Pharmaceuticals, Inc. (a)		24,861		45,744
BIND Therapeutics, Inc. (a)		2,576		38,872
BioDelivery Sciences International, Inc. (a)		14,514		85,488
Biotime, Inc. (a)(b)		17,902		64,447
Bluebird Bio, Inc. (a)		3,302		69,276
Cell Therapeutics, Inc. (a)		63,186		121,317
Celldex Therapeutics, Inc. (a)		44,106		1,067,806
Cellular Dynamics International, Inc. (a)		1,821		30,065
Cepheid, Inc. (a)		33,178		1,550,076
Chelsea Therapeutics International Ltd. (a)		39,248		173,869
ChemoCentryx, Inc. (a)		12,012		69,550
Clovis Oncology, Inc. (a)		8,882		535,318
Cornerstone Therapeutics, Inc. (a)		4,237		40,209
Coronado Biosciences, Inc. (a)(b)		12,937		34,024
Curis, Inc. (a)		41,675		117,524
Cytokinetics, Inc. (a)		12,884		83,746
Cytori Therapeutics, Inc. (a)		30,640		78,745
Dendreon Corp. (a)(b)		78,577		234,945
Durata Therapeutics, Inc. (a)		6,324		80,884
Dyax Corp. (a)		59,894		451,002
Dynavax Technologies Corp. (a)		130,692		256,156
Emergent Biosolutions, Inc. (a)		13,611		312,917
Enzon Pharmaceuticals, Inc.		18,630		21,611
Epizyme, Inc. (a)(b)		2,864		59,571
Exact Sciences Corp. (a)		34,864		407,560
Exelixis, Inc. (a)(b)		91,157		558,792
Fibrocell Science, Inc. (a)		10,720		43,523
Five Prime Therapeutics, Inc. (a)		2,724		45,736
Foundation Medicine, Inc. (a)		3,345		79,678
Furiex Pharmaceuticals, Inc. (a)		3,338		140,229
Galena Biopharma, Inc. (a)(b)		50,839		252,161
GenMark Diagnostics, Inc. (a)		17,754		236,306
Genomic Health, Inc. (a)		8,319		243,497
Geron Corp. (a)		64,669		306,531
GTx, Inc. (a)		12,898		21,282
Halozyme Therapeutics, Inc. (a)		43,999		659,545
Harvard Apparatus Regenerative Technology, Inc. (a)		3,028		14,383
Harvard Bioscience, Inc. (a)		12,112		56,926
Horizon Pharma, Inc. (a)		25,715		195,948
Hyperion Therapeutics, Inc. (a)		4,072		82,336
Idenix Pharmaceuticals, Inc. (a)(b)		49,542		296,261
Immunogen, Inc. (a)		41,889		614,512
Immunomedics, Inc. (a)		36,847		169,496
Insmed, Inc. (a)		17,108		291,007
Insys Therapeutics, Inc. (a)		2,460		95,227
Intercept Pharmaceuticals, Inc. (a)		3,556		242,804
InterMune, Inc. (a)		44,307		652,642
Intrexon Corp. (a)		5,824		138,611
KaloBios Pharmaceuticals, Inc. (a)		5,689		25,145
Common Stocks	Shares		Value
Biotechnology (concluded)
Karyopharm Therapeutics, Inc. (a)		3,788	$	86,821
Keryx Biopharmaceuticals, Inc. (a)		40,472		524,112
Lexicon Pharmaceuticals, Inc. (a)(b)		113,162		203,692
Ligand Pharmaceuticals, Inc., Class B (a)		8,821		463,985
MacroGenics, Inc. (a)		2,792		76,585
MannKind Corp. (a)(b)		73,759		384,284
Merrimack Pharmaceuticals, Inc. (a)(b)		48,143		257,084
Momenta Pharmaceuticals, Inc. (a)		23,400		413,712
Nanosphere, Inc. (a)		26,758		61,276
Nektar Therapeutics (a)		57,171		648,891
Neurocrine Biosciences, Inc. (a)		33,104		309,191
NewLink Genetics Corp. (a)		8,398		184,840
Novavax, Inc. (a)		92,264		472,392
NPS Pharmaceuticals, Inc. (a)(b)		49,619		1,506,433
Omeros Corp. (a)(b)		14,948		168,763
OncoGenex Pharmaceutical, Inc. (a)		7,155		59,673
OncoMed Pharmaceuticals, Inc. (a)(b)		2,281		67,335
Onconova Therapeutics, Inc. (a)		2,938		33,728
Ophthotech Corp. (a)		4,462		144,346
Opko Health, Inc. (a)(b)		93,333		787,731
Orexigen Therapeutics, Inc. (a)		50,340		283,414
Osiris Therapeutics, Inc. (a)		8,353		134,316
Pacific Biosciences of California, Inc. (a)		23,278		121,744
PDL BioPharma, Inc.		69,496		586,546
Peregrine Pharmaceuticals, Inc. (a)(b)		77,741		108,060
Peregrine Semiconductor Corp. (a)		12,813		94,944
Progenics Pharmaceuticals, Inc. (a)		29,804		158,855
Prothena Corp. PLC (a)		7,082		187,815
PTC Therapeutics, Inc. (a)		4,900		83,153
Puma Biotechnology, Inc. (a)		10,956		1,134,275
Raptor Pharmaceutical Corp. (a)		29,530		384,481
Regulus Therapeutics, Inc. (a)		4,939		36,499
Repligen Corp. (a)		15,619		213,043
Repros Therapeutics, Inc. (a)		11,437		209,297
Rigel Pharmaceuticals, Inc. (a)		42,423		120,906
Rockwell Medical, Inc. (a)(b)		19,548		204,081
RTI Surgical, Inc. (a)		27,404		97,010
Sangamo Biosciences, Inc. (a)		30,240		420,034
Sarepta Therapeutics, Inc. (a)(b)		18,649		379,880
Sequenom, Inc. (a)(b)		56,165		131,426
Stemline Therapeutics, Inc. (a)		4,666		91,454
Sucampo Pharmaceuticals, Inc., Class A (a)		6,668		62,679
Sunesis Pharmaceuticals, Inc. (a)		15,670		74,276
Symmetry Medical, Inc. (a)		18,574		187,226
Synageva BioPharma Corp. (a)(b)		9,521		616,199
Synergy Pharmaceuticals, Inc. (a)		40,222		226,450
Synta Pharmaceuticals Corp. (a)(b)		24,389		127,798
Targacept, Inc. (a)		13,530		56,150
TESARO, Inc. (a)		6,643		187,598
Threshold Pharmaceuticals, Inc. (a)		22,755		106,266
Vanda Pharmaceuticals, Inc. (a)		16,506		204,840
Veracyte, Inc. (a)		2,424		35,148
Verastem, Inc. (a)		8,373		95,452
ViroPharma, Inc. (a)		31,622		1,576,357
West Pharmaceutical Services, Inc.		34,150		1,675,399
Wright Medical Group, Inc. (a)		19,978		613,524
XOMA Corp. (a)		38,392		258,378
ZIOPHARM Oncology, Inc. (a)(b)		40,256		174,711
				35,090,569
Building Materials — 1.1%
Acuity Brands, Inc.		21,173		2,314,632
BlueLinx Holdings, Inc. (a)		16,389		31,959
Builders FirstSource, Inc. (a)		22,425		160,115
Gibraltar Industries, Inc. (a)		15,233		283,182
Griffon Corp.		22,141		292,483
Headwaters, Inc. (a)		36,345		355,818

See Notes to Financial Statements.

36 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Building Materials (concluded)
Louisiana-Pacific Corp. (a)		68,930	$	1,275,894
LSI Industries, Inc.		10,405		90,211
NCI Building Systems, Inc. (a)		10,405		182,504
Patrick Industries, Inc. (a)		3,237		93,646
PGT, Inc. (a)		16,609		168,083
Quanex Building Products Corp.		18,482		368,161
Revolution Lighting Technologies, Inc. (a)(b)		14,600		50,005
Simpson Manufacturing Co., Inc.		20,080		737,538
Stock Building Supply Holdings, Inc. (a)		3,917		71,368
Texas Industries, Inc. (a)		10,785		741,792
Trex Co., Inc. (a)		8,517		677,357
Watsco, Inc.		12,684		1,218,425
				9,113,173
Building: Climate Control — 0.1%
AAON, Inc.		13,888		443,721
Comfort Systems USA, Inc.		18,459		357,920
Nortek, Inc. (a)		4,458		332,567
				1,134,208
Building: Roofing, Wallboard & Plumbing — 0.2%
Beacon Roofing Supply, Inc. (a)		24,091		970,386
USG Corp. (a)		34,661		983,679
				1,954,065
Casinos & Gambling — 0.3%
Boyd Gaming Corp. (a)		34,592		389,506
Caesars Entertainment Corp. (a)		20,052		431,920
Isle of Capri Casinos, Inc. (a)		10,978		98,802
Monarch Casino & Resort, Inc. (a)		4,268		85,701
Multimedia Games Holding Co., Inc. (a)		14,268		447,444
Pinnacle Entertainment, Inc. (a)		26,441		687,202
Scientific Games Corp., Class A (a)		23,649		400,378
				2,540,953
Cement — 0.0%
US Concrete, Inc. (a)		7,077		160,153
Chemicals: Diversified — 1.2%
Aceto Corp.		13,575		339,511
American Vanguard Corp.		14,176		344,335
Axiall Corp.		34,532		1,638,198
Chemtura Corp. (a)		48,603		1,356,996
Hawkins, Inc.		4,709		175,128
Innophos Holdings, Inc.		10,887		529,108
KMG Chemicals, Inc.		3,932		66,411
Landec Corp. (a)		12,952		156,978
LSB Industries, Inc. (a)		9,475		388,665
Marrone Bio Innovations, Inc. (a)		2,654		47,188
Olin Corp.		39,725		1,146,066
OM Group, Inc. (a)		15,814		575,788
OMNOVA Solutions, Inc. (a)		23,335		212,582
Penford Corp. (a)		4,618		59,341
PolyOne Corp.		49,091		1,735,367
Sensient Technologies Corp.		24,756		1,201,161
Taminco Corp. (a)		7,921		160,083
				10,132,906
Chemicals: Specialty — 0.6%
Advanced Emissions Solutions, Inc. (a)		5,324		288,721
Balchem Corp.		14,656		860,307
Calgon Carbon Corp. (a)		26,726		549,754
FutureFuel Corp.		10,874		171,809
GSE Holding, Inc. (a)		4,000		8,280
Innospec, Inc.		11,643		538,140
Kraton Performance Polymers, Inc. (a)		16,123		371,635
Polypore International, Inc. (a)(b)		23,078		897,734
Quaker Chemical Corp.		6,498		500,801
Stepan Co.		9,318		611,540
Common Stocks	Shares		Value
Chemicals: Specialty (concluded)
Zep, Inc.		11,234	$	204,009
				5,002,730
Coal — 0.2%
Arch Coal, Inc.		105,412		469,083
Cloud Peak Energy, Inc. (a)		30,136		542,448
Hallador Energy Co.		4,280		34,497
KiOR, Inc., Class A (a)		21,114		35,471
L&L Energy, Inc. (a)(b)		15,160		25,469
Walter Energy, Inc. (b)		31,073		516,744
Westmoreland Coal Co. (a)		5,657		109,124
				1,732,836
Commercial Banks — 0.0%
HomeTrust Bancshares, Inc. (a)		10,082		161,211
Commercial Finance & Mortgage Companies — 0.2%
Capital Bank Financial Corp., Class A (a)		11,708		266,357
Federal Agricultural Mortgage Corp., Class C		5,159		176,696
Garrison Capital, Inc.		2,850		39,558
Medallion Financial Corp.		10,807		155,080
Meta Financial Group, Inc.		2,888		116,473
NewStar Financial, Inc. (a)		13,056		232,005
PennantPark Floating Rate Capital Ltd.		7,085		97,277
PennyMac Financial Services, Inc. (a)(c)		5,912		103,756
RE/MAX Holdings, Inc., Class A (a)		5,821		186,679
Stonegate Mortgage Corp. (a)		3,990		65,955
Walker & Dunlop, Inc. (a)		8,043		130,055
				1,569,891
Commercial Services & Supplies — 0.1%
ARC Document Solutions, Inc. (a)		18,908		155,424
Costa, Inc. (a)		4,609		100,153
LifeLock, Inc. (a)		29,965		491,726
National Research Corp. (a)		4,135		77,821
National Research Corp., Class B		588		20,409
Performant Financial Corp. (a)		10,921		112,486
				958,019
Commercial Services: Rental & Leasing — 0.5%
Aircastle Ltd.		33,959		650,654
CAI International, Inc. (a)		8,536		201,193
Electro Rent Corp.		9,473		175,440
H&E Equipment Services, Inc. (a)		14,732		436,509
Marlin Business Services Corp.		4,003		100,876
McGrath RentCorp		12,532		498,774
Mobile Mini, Inc. (a)		18,982		781,679
PHH Corp. (a)		28,297		689,032
TAL International Group, Inc. (a)		16,769		961,702
				4,495,859
Commercial Vehicles & Parts — 0.2%
Accuride Corp. (a)		19,340		72,138
Commercial Vehicle Group, Inc. (a)		11,547		83,947
Miller Industries, Inc.		5,397		100,546
Modine Manufacturing Co. (a)		23,402		300,013
Rush Enterprises, Inc., Class A (a)(b)		17,141		508,231
Spartan Motors, Inc.		16,529		110,744
Wabash National Corp. (a)		33,922		418,937
				1,594,556
Communications Equipment — 0.0%
Ruckus Wireless, Inc. (a)		22,951		325,904
Communications Technology — 2.0%
ADTRAN, Inc.		29,344		792,581
Alliance Fiber Optic Products, Inc.		5,592		84,160
Anaren, Inc. (a)		5,796		162,230
Anixter International, Inc.		13,386		1,202,598
Aruba Networks, Inc. (a)		56,413		1,009,793

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 37

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Communications Technology (concluded)
Aviat Networks, Inc. (a)		29,848	$	67,456
Bel Fuse, Inc., Class B		4,778		101,819
Black Box Corp.		8,058		240,128
Calix, Inc. (a)		19,970		192,511
Ciena Corp. (a)		50,224		1,201,860
Comtech Telecommunications Corp.		8,380		264,138
Cyan, Inc. (a)		4,039		21,366
Datalink Corp. (a)		9,261		100,945
Digi International, Inc. (a)		12,568		152,324
DigitalGlobe, Inc. (a)		36,821		1,515,184
Emulex Corp. (a)		40,030		286,615
Extreme Networks, Inc. (a)		46,124		322,868
Finisar Corp. (a)(b)		46,223		1,105,654
General Cable Corp.		24,631		724,398
GSI Technology, Inc. (a)		9,841		65,344
Harmonic, Inc. (a)		50,126		369,930
Infinera Corp. (a)		57,370		561,079
InterDigital, Inc.		20,421		602,215
Ixia (a)		27,984		372,467
KVH Industries, Inc. (a)		7,456		97,152
Loral Space & Communications, Inc. (a)		6,477		524,507
NeoPhotonics Corp. (a)		9,801		69,195
Net Element International, Inc. (a)		900		3,933
NETGEAR, Inc. (a)		19,106		629,352
Numerex Corp., Class A (a)		6,739		87,270
Oplink Communications, Inc. (a)		9,496		176,626
Parkervision, Inc. (a)(b)		44,121		200,751
PC-Tel, Inc.		8,840		84,599
Plantronics, Inc.		21,412		994,587
Procera Networks, Inc. (a)		10,331		155,172
QLogic Corp. (a)		44,133		522,093
RingCentral, Inc., Class A (a)		4,183		76,842
Seachange International, Inc. (a)		16,300		198,208
ShoreTel, Inc. (a)		29,200		270,976
Sonus Networks, Inc. (a)(b)		106,733		336,209
TeleNav, Inc. (a)		8,613		56,760
ViaSat, Inc. (a)(b)		19,556		1,225,183
Westell Technologies, Inc., Class A (a)		21,572		87,367
				17,316,445
Computer Services Software & Systems — 6.2%
ACI Worldwide, Inc. (a)(d)		19,698		1,280,370
Actuate Corp. (a)		23,546		181,540
Acxiom Corp. (a)		36,530		1,350,879
American Software, Inc., Class A		11,588		114,374
Aspen Technology, Inc. (a)		46,308		1,935,674
AVG Technologies NV (a)		11,934		205,384
Avid Technology, Inc. (a)		15,631		127,393
Bankrate, Inc. (a)(b)		22,912		411,041
Barracuda Networks, Inc. (a)		2,032		80,630
Bazaarvoice, Inc. (a)		24,011		190,167
Benefitfocus, Inc. (a)		2,561		147,872
Blackbaud, Inc.		22,594		850,664
Blucora, Inc. (a)		20,290		591,656
Bottomline Technologies, Inc. (a)		18,722		676,988
Brightcove, Inc. (a)		14,037		198,483
BroadSoft, Inc. (a)		13,913		380,381
CACI International, Inc., Class A (a)(b)		11,402		834,854
Callidus Software, Inc. (a)		20,029		274,998
CIBER, Inc. (a)		37,341		154,592
CommVault Systems, Inc. (a)		22,972		1,720,143
Computer Task Group, Inc.		7,509		141,920
ComScore, Inc. (a)		17,671		505,567
Cornerstone OnDemand, Inc. (a)		19,965		1,064,933
Covisint Corp. (a)		3,564		44,728
CSG Systems International, Inc.		16,767		492,950
Cvent, Inc. (a)		3,131		113,937
Common Stocks	Shares		Value
Computer Services Software & Systems (continued)
DealerTrack Holdings, Inc. (a)		21,509	$	1,034,153
Demand Media, Inc. (a)		17,580		101,437
Demandware, Inc. (a)		9,130		585,416
Digimarc Corp.		3,050		58,743
Digital River, Inc. (a)		16,628		307,618
EarthLink, Inc.		51,479		260,999
Ebix, Inc.		15,485		227,939
Endurance International Group Holdings, Inc. (a)		10,944		155,186
Envestnet, Inc. (a)		11,195		451,159
EPAM Systems, Inc. (a)		10,826		378,260
EPIQ Systems, Inc.		15,613		253,087
ePlus, Inc. (a)		1,817		103,278
Guidance Software, Inc. (a)		8,095		81,760
Guidewire Software, Inc. (a)		24,128		1,183,961
ICG Group, Inc. (a)		18,825		350,710
iGATE Corp. (a)		17,222		691,636
Imperva, Inc. (a)		10,014		481,974
Infoblox, Inc. (a)(b)		26,221		865,817
Interactive Intelligence Group, Inc. (a)		7,668		516,517
Internap Network Services Corp. (a)		26,618		200,167
IntraLinks Holdings, Inc. (a)		19,080		231,059
Jive Software, Inc. (a)		19,732		221,985
The KEYW Holding Corp. (a)		15,881		213,441
Limelight Networks, Inc. (a)		25,253		50,001
Lionbridge Technologies, Inc. (a)		29,093		173,394
LivePerson, Inc. (a)		27,322		404,912
LogMeIn, Inc. (a)		12,051		404,311
Luxoft Holding, Inc. (a)		2,270		86,215
Manhattan Associates, Inc. (a)		9,617		1,129,805
Mantech International Corp., Class A		11,848		354,611
Mavenir Systems, Inc. (a)		2,721		30,366
Mentor Graphics Corp.		47,143		1,134,732
Mercury Systems, Inc. (a)		16,162		176,974
MicroStrategy, Inc., Class A (a)		4,481		556,719
Millennial Media, Inc. (a)(b)		17,255		125,444
Mitek Systems, Inc. (a)		12,114		71,957
ModusLink Global Solutions, Inc. (a)		17,803		102,011
Monotype Imaging Holdings, Inc.		18,911		602,505
Netscout Systems, Inc. (a)		17,922		530,312
NIC, Inc.		32,055		797,208
OpenTable, Inc. (a)(b)		11,273		894,738
PDF Solutions, Inc. (a)		12,462		319,276
Pegasystems, Inc.		8,614		423,637
Perficient, Inc. (a)		16,586		388,444
Progress Software Corp. (a)		25,694		663,676
Proofpoint, Inc. (a)		11,388		377,740
PROS Holdings, Inc. (a)		11,134		444,247
PTC, Inc. (a)		59,125		2,092,434
QAD, Inc., Class A		2,825		49,890
QLIK Technologies, Inc. (a)		43,063		1,146,768
RealNetworks, Inc. (a)		10,744		81,117
RealPage, Inc. (a)		23,079		539,587
Reis, Inc. (a)		4,012		77,151
Responsys, Inc. (a)		18,242		500,013
Rocket Fuel, Inc. (a)		2,488		152,987
Sapiens International Corp. NV		9,467		72,991
Sapient Corp. (a)		54,547		946,936
SciQuest, Inc. (a)		11,296		321,710
Shutterstock, Inc. (a)		3,666		306,588
Spark Networks, Inc. (a)		8,520		52,483
SPS Commerce, Inc. (a)		7,937		518,286
SS&C Technologies Holdings, Inc. (a)		28,789		1,274,201
Support.com, Inc. (a)		25,618		97,092
Synchronoss Technologies, Inc. (a)		14,428		448,278
SYNNEX Corp. (a)		13,041		878,963
Syntel, Inc. (a)		7,624		693,403
Tangoe, Inc. (a)(b)		15,381		277,012

See Notes to Financial Statements.

38 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Computer Services Software & Systems (concluded)
TechTarget, Inc. (a)		5,669	$	38,889
TeleCommunication Systems, Inc., Class A (a)		23,065		53,511
Textura Corp. (a)		2,682		80,299
Travelzoo, Inc. (a)		3,848		82,039
Tremor Video, Inc. (a)		3,698		21,448
Tyler Technologies, Inc. (a)		15,565		1,589,653
Ultimate Software Group, Inc. (a)		13,656		2,092,372
Unisys Corp. (a)		21,874		734,310
United Online, Inc.		6,553		90,169
Unwired Planet, Inc. (a)		31,168		43,012
VASCO Data Security International, Inc. (a)		14,020		108,375
Verint Systems, Inc. (a)		26,062		1,119,102
VirnetX Holding Corp. (a)(b)		20,942		406,484
Virtusa Corp. (a)		10,110		385,090
Web.com Group, Inc. (a)		20,743		659,420
Wix.com Ltd. (a)		4,041		108,501
Yelp, Inc. (a)		16,058		1,107,199
YuMe, Inc. (a)		2,681		19,973
Zillow, Inc. Class A (a)(b)		11,523		941,775
Zix Corp. (a)		29,988		136,745
				53,617,911
Computer Technology — 0.4%
Cray, Inc. (a)(b)		19,615		538,628
Imation Corp. (a)		16,356		76,546
Immersion Corp. (a)		13,547		140,618
Insight Enterprises, Inc. (a)(b)		21,531		488,969
PC Connection, Inc.		4,484		111,427
Quantum Corp. (a)		103,326		123,991
Radisys Corp. (a)		10,925		25,018
Safeguard Scientifics, Inc. (a)		10,430		209,539
Silicon Graphics International Corp. (a)(b)		16,819		225,543
Super Micro Computer, Inc. (a)		15,817		271,420
Synaptics, Inc. (a)		16,080		833,105
Violin Memory, Inc. (a)		9,218		36,503
				3,081,307
Construction — 0.5%
Aegion Corp. (a)		19,417		425,038
EMCOR Group, Inc.		33,205		1,409,220
Granite Construction, Inc.		19,290		674,764
Great Lakes Dredge & Dock Corp. (a)		29,547		271,833
Orion Marine Group, Inc. (a)		13,673		164,486
Primoris Services Corp.		17,474		543,966
Sterling Construction Co., Inc. (a)		8,035		94,251
Tutor Perini Corp. (a)		18,404		484,025
				4,067,583
Consumer Electronics — 0.2%
RealD, Inc. (a)		20,297		173,336
Skullcandy, Inc. (a)		8,838		63,722
TiVo, Inc. (a)		62,642		821,863
Universal Electronics, Inc. (a)		7,414		282,548
VOXX International Corp. (a)		9,350		156,145
XO Group, Inc. (a)		13,283		197,385
Zagg, Inc. (a)		14,919		64,898
				1,759,897
Consumer Lending — 0.9%
Cash America International, Inc.		14,165		542,519
Credit Acceptance Corp. (a)		3,543		460,555
Encore Capital Group, Inc. (a)		12,387		622,571
Ezcorp, Inc., Class A (a)		25,443		297,429
First Cash Financial Services, Inc. (a)		14,448		893,464
The First Marblehead Corp. (a)		4,544		33,582
Imperial Holdings, Inc. (a)		8,273		54,105
JGWPT Holdings, Inc., Class A, Class A (a)		4,744		82,498
Common Stocks	Shares		Value
Consumer Lending (concluded)
Marcus & Millichap, Inc. (a)		3,302	$	49,200
MGIC Investment Corp. (a)(b)		160,370		1,353,523
MoneyGram International, Inc. (a)		10,672		221,764
Nelnet, Inc., Class A		11,320		477,025
Nicholas Financial, Inc.		5,119		80,573
Portfolio Recovery Associates, Inc. (a)		25,075		1,324,963
Regional Management Corp. (a)		2,617		88,795
Springleaf Holdings, Inc. (a)		12,037		304,295
Tree.com, Inc. (a)		3,103		101,903
World Acceptance Corp. (a)		4,297		376,116
				7,364,880
Consumer Services: Miscellaneous — 0.6%
Chuy’s Holdings, Inc. (a)		8,021		288,916
Core-Mark Holding Co., Inc.		5,687		431,814
Del Frisco’s Restaurant Group, Inc. (a)		5,366		126,477
Move, Inc. (a)		19,772		316,154
Nutrisystem, Inc.		14,205		233,530
Sotheby’s		33,743		1,795,128
Steiner Leisure Ltd. (a)		7,253		356,775
WEX, Inc. (a)		19,161		1,897,514
				5,446,308
Containers & Packaging — 0.2%
AEP Industries, Inc. (a)		2,119		111,947
Berry Plastics Group, Inc. (a)		27,306		649,610
Graphic Packaging Holding Co. (a)		96,893		930,173
Myers Industries, Inc.		13,997		295,616
UFP Technologies, Inc. (a)		2,650		66,833
				2,054,179
Cosmetics — 0.1%
Elizabeth Arden, Inc. (a)		12,706		450,428
Inter Parfums, Inc.		8,125		290,956
Revlon, Inc., Class A (a)		5,736		143,171
				884,555
Diversified Financial Services — 0.8%
Blackhawk Network Holdings, Inc. (a)		5,787		146,180
California First National Bancorp		1,296		19,570
ConnectOne Bancorp, Inc. (a)		874		34,637
DFC Global Corp. (a)		20,210		231,404
Evercore Partners, Inc., Class A		15,630		934,361
FBR & Co. (a)		4,207		110,981
Fidus Investment Corp.		6,942		150,919
Greenhill & Co., Inc.		13,981		810,059
Hannon Armstrong Sustainable Infrastructure Capital, Inc.		7,161		99,967
Intersections, Inc.		4,604		35,865
JTH Holding, Inc., Class A (a)		2,247		54,602
Main Street Capital Corp.		19,361		632,911
MidWestOne Financial Group, Inc.		3,319		90,277
Outerwall, Inc. (a)(b)		13,906		935,457
Piper Jaffray Cos. (a)		8,009		316,756
Planet Payment, Inc. (a)		20,448		56,845
Stifel Financial Corp. (a)		31,401		1,504,736
Triangle Capital Corp.		13,700		378,805
				6,544,332
Diversified Manufacturing Operations — 0.5%
AM Castle & Co. (a)		8,451		124,821
Barnes Group, Inc.		26,580		1,018,280
Federal Signal Corp. (a)		30,813		451,411
Lydall, Inc. (a)		8,228		144,977
OSI Systems, Inc. (a)		9,849		523,081
Raven Industries, Inc.		17,988		740,026
Standex International Corp.		6,292		395,641

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 39

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Diversified Manufacturing Operations (concluded)
Trimas Corp. (a)		22,208	$	885,877
				4,284,114
Diversified Materials & Processing — 0.6%
Belden, Inc.		21,751		1,532,358
Cabot Microelectronics Corp. (a)		11,524		526,647
CLARCOR, Inc.		24,534		1,578,763
Encore Wire Corp.		10,213		553,545
Harbinger Group, Inc. (a)		16,470		195,170
Insteel Industries, Inc.		8,962		203,706
Koppers Holdings, Inc.		10,259		469,349
NL Industries, Inc.		3,378		37,766
Tredegar Corp.		12,167		350,531
Uranium Energy Corp. (a)(b)		41,466		82,932
				5,530,767
Diversified Media — 0.0%
EW Scripps Co. (a)		15,505		336,769
Hemisphere Media Group, Inc. (a)		4,143		49,177
				385,946
Diversified Retail — 0.4%
The Bon-Ton Stores, Inc.		6,580		107,122
Fred’s, Inc., Class A		18,204		337,138
Gordmans Stores, Inc.		4,263		32,697
HSN, Inc.		16,728		1,042,155
Overstock.com, Inc. (a)		5,597		172,332
Pricesmart, Inc.		9,328		1,077,757
Tuesday Morning Corp. (a)		21,218		338,639
Valuevision Media, Inc., Class A (a)		19,037		133,069
Winmark Corp.		1,076		99,659
				3,340,568
Drug & Grocery Store Chains — 0.8%
Arden Group, Inc., Class A		562		71,099
Casey’s General Stores, Inc.		18,933		1,330,043
Harris Teeter Supermarkets, Inc.		24,441		1,206,163
Ingles Markets, Inc., Class A		5,946		161,137
The Pantry, Inc. (a)		11,755		197,249
PetMed Express, Inc.		10,169		169,110
Rite Aid Corp. (a)		360,867		1,825,987
Spartan Stores, Inc.		18,161		440,949
Supervalu, Inc. (a)		100,449		732,273
Susser Holdings Corp. (a)		8,927		584,629
Village Super Market, Inc., Class A		3,048		94,519
Weis Markets, Inc.		5,469		287,451
				7,100,609
Education Services — 0.5%
American Public Education, Inc. (a)		8,746		380,189
Bridgepoint Education, Inc. (a)		8,481		150,198
Bright Horizons Family Solutions, Inc. (a)		5,924		217,648
Capella Education Co.		5,482		364,224
Career Education Corp. (a)(b)		27,741		158,124
Chegg, Inc. (a)		7,301		62,131
Corinthian Colleges, Inc. (a)		38,574		68,662
Education Management Corp. (a)		11,775		118,810
Franklin Covey Co. (a)		4,431		88,088
Grand Canyon Education, Inc. (a)		22,462		979,343
HealthStream, Inc. (a)		9,978		326,979
Houghton Mifflin Harcourt Co. (a)		10,547		178,877
ITT Educational Services, Inc. (a)		11,583		388,957
K12, Inc. (a)		13,495		293,516
Lincoln Educational Services Corp.		11,733		58,430
Rosetta Stone, Inc. (a)		5,608		68,530
Strayer Education, Inc. (a)		5,453		187,965
Universal Technical Institute, Inc.		10,727		149,213
				4,239,884
Common Stocks	Shares		Value
Electronic Components — 0.7%
Acacia Research Corp.		24,422	$	355,096
Checkpoint Systems, Inc. (a)		20,374		321,298
InvenSense, Inc. (a)(b)		28,136		584,666
Kemet Corp. (a)		21,792		122,907
Methode Electronics, Inc.		18,345		627,215
Multi-Fineline Electronix, Inc. (a)		4,174		57,977
Neonode, Inc. (a)		13,197		83,405
NVE Corp. (a)		2,346		136,725
Park Electrochemical Corp.		10,347		297,166
Rogers Corp. (a)		8,446		519,429
Sanmina Corp. (a)		40,988		684,500
ScanSource, Inc. (a)		13,819		586,340
Sparton Corp. (a)		4,947		138,269
Speed Commerce, Inc. (a)		21,633		101,026
TTM Technologies, Inc. (a)		26,311		225,748
Universal Display Corp. (a)		19,910		684,108
Viasystems Group, Inc. (a)		1,775		24,282
				5,550,157
Electronic Entertainment — 0.1%
DTS, Inc. (a)		9,073		217,570
Glu Mobile, Inc. (a)		31,189		121,325
Take-Two Interactive Software, Inc. (a)		40,099		696,520
				1,035,415
Electronics — 0.4%
Agilysys, Inc. (a)		6,818		94,907
American Science & Engineering, Inc.		4,062		292,099
Coherent, Inc. (a)		12,030		894,912
Control4 Corp. (a)(b)		2,252		39,860
Daktronics, Inc.		18,219		285,674
II-VI, Inc. (a)		25,304		445,350
iRobot Corp. (a)(b)		13,994		486,571
Newport Corp. (a)		19,394		350,450
Richardson Electronics Ltd.		5,364		60,935
Rofin-Sinar Technologies, Inc. (a)		14,015		378,685
				3,329,443
Energy Equipment — 0.4%
C&J Energy Services, Inc. (a)		22,313		515,430
Capstone Turbine Corp. (a)		152,004		196,085
Dynegy, Inc. (a)		49,454		1,064,250
Enphase Energy, Inc. (a)(b)		7,781		49,332
FuelCell Energy, Inc. (a)(b)		77,218		108,878
Matador Resources Co. (a)		28,775		536,366
PowerSecure International, Inc. (a)		10,755		184,663
Silver Spring Networks, Inc. (a)		2,854		59,934
SunPower Corp. (a)		20,385		607,677
Uni-Pixel, Inc. (a)(b)		4,912		49,169
				3,371,784
Energy Equipment & Services — 0.1%
Geospace Technologies Corp. (a)		6,393		606,248
Pioneer Energy Services Corp. (a)		30,930		247,749
				853,997
Engineering & Contracting Services — 0.5%
Argan, Inc.		6,981		192,396
Dycom Industries, Inc. (a)		16,385		455,339
Engility Holdings, Inc. (a)		8,522		284,635
Exponent, Inc.		6,531		505,761
Furmanite Corp. (a)		18,637		197,925
Layne Christensen Co. (a)		9,979		170,441
MasTec, Inc. (a)		29,381		961,346
Mistras Group, Inc. (a)		7,989		166,810
MYR Group, Inc. (a)		10,426		261,484
Power Solutions International, Inc. (a)		1,050		78,855
Tetra Tech, Inc. (a)		32,117		898,634

See Notes to Financial Statements.

40 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Engineering & Contracting Services (concluded)
VSE Corp.		1,988	$	95,444
				4,269,070
Entertainment — 0.3%
Ascent Capital Group, Inc., Class A (a)		6,999		598,834
Carmike Cinemas, Inc. (a)		11,425		318,072
Live Nation Entertainment, Inc. (a)		69,583		1,374,960
Reading International, Inc., Class A (a)		8,224		61,598
Rentrak Corp. (a)(b)		5,195		196,839
Trans World Entertainment Corp. (a)		4,758		21,030
World Wrestling Entertainment, Inc.		14,321		237,442
				2,808,775
Environmental, Maintenance, & Security Service — 0.5%
ABM Industries, Inc.		27,105		774,932
The Brink’s Co.		23,782		811,917
G&K Services, Inc., Class A		9,698		603,506
Healthcare Services Group, Inc.		33,898		961,686
Mac-Gray Corp.		6,146		130,480
SP Plus Corp. (a)(b)		7,689		200,222
Swisher Hygiene, Inc. (a)		53,444		27,476
UniFirst Corp.		7,245		775,215
				4,285,434
Fertilizers — 0.1%
Intrepid Potash, Inc. (a)		27,139		429,882
Rentech, Inc. (a)		68,542		119,948
				549,830
Financial Data & Systems — 0.8%
Advent Software, Inc.		16,139		564,704
Cardtronics, Inc. (a)		22,153		962,548
Cass Information Systems, Inc.		5,098		343,350
Consumer Portfolio Services, Inc. (a)		8,783		82,472
Euronet Worldwide, Inc. (a)		24,643		1,179,167
EVERTEC, Inc.		14,651		361,294
Fair Isaac Corp.		17,734		1,114,405
Global Cash Access Holdings, Inc. (a)		32,864		328,311
Green Dot Corp., Class A (a)		12,817		322,347
Heartland Payment Systems, Inc.		17,982		896,223
Higher One Holdings, Inc. (a)		15,772		153,935
Xoom Corp. (a)		3,978	��	108,878
				6,417,634
Food & Staples Retailing — 0.0%
Fairway Group Holdings Corp. (a)		7,889		142,949
Natural Grocers by Vitamin Cottage, Inc. (a)		4,419		187,586
				330,535
Foods — 1.3%
Annie’s, Inc. (a)		6,799		292,629
B&G Foods, Inc.		26,174		887,560
Boulder Brands, Inc. (a)		29,489		467,696
The Chefs’ Warehouse, Inc. (a)		8,220		239,695
Chiquita Brands International, Inc. (a)		23,134		270,668
Diamond Foods, Inc. (a)		11,055		285,661
The Hain Celestial Group, Inc. (a)		18,977		1,722,732
Inventure Foods, Inc. (a)		6,754		89,558
J&J Snack Foods Corp.		7,398		655,389
John B Sanfilippo & Son, Inc.		3,893		96,079
Lancaster Colony Corp.		9,152		806,749
Lifeway Foods, Inc.		2,232		35,667
Medifast, Inc. (a)		6,915		180,689
Nature’s Sunshine Products, Inc.		5,268		91,242
Nutraceutical International Corp. (a)		4,114		110,173
Omega Protein Corp. (a)		9,684		119,016
Post Holdings, Inc. (a)(b)		16,170		796,696
Roundy’s, Inc.		12,789		126,100
Common Stocks	Shares		Value
Foods (concluded)
Seneca Foods Corp., Class A (a)		3,920	$	125,009
Snyders-Lance, Inc.		23,543		676,155
Synutra International, Inc. (a)		8,533		75,773
Tootsie Roll Industries, Inc.		9,718		316,224
TreeHouse Foods, Inc. (a)		17,903		1,233,875
United Natural Foods, Inc. (a)		24,373		1,837,480
				11,538,515
Forest Products — 0.1%
Boise Cascade Co. (a)		6,155		181,449
Deltic Timber Corp.		5,517		374,825
Universal Forest Products, Inc.		9,834		512,745
				1,069,019
Forms & Bulk Printing Services — 0.3%
Consolidated Graphics, Inc. (a)		3,586		241,840
Deluxe Corp.		25,143		1,312,213
Ennis, Inc.		13,047		230,932
InnerWorkings, Inc. (a)(b)		22,254		173,359
Multi-Color Corp.		6,065		228,893
Quad/Graphics, Inc.		12,417		338,115
Schawk, Inc.		6,483		96,402
				2,621,754
Funeral Parlors & Cemeteries — 0.2%
Carriage Services, Inc.		7,852		153,349
Hillenbrand, Inc.		27,183		799,724
Matthews International Corp., Class A		13,644		581,371
				1,534,444
Gas Pipeline — 0.3%
Crosstex Energy, Inc.		23,662		855,618
SemGroup Corp., Class A		20,895		1,362,981
				2,218,599
Glass — 0.1%
Apogee Enterprises, Inc.		14,249		511,682
Gold — 0.1%
Allied Nevada Gold Corp. (a)(b)		52,020		184,671
Coeur Mining, Inc. (a)		50,357		546,373
Gold Resource Corp.		16,268		73,694
Midway Gold Corp. (a)		51,812		41,968
				846,706
Health Care Facilities — 0.7%
Amsurg Corp. (a)		15,795		725,307
Capital Senior Living Corp. (a)(b)		14,180		340,178
Emeritus Corp. (a)		19,985		432,276
The Ensign Group, Inc.		9,593		424,682
Five Star Quality Care, Inc. (a)		20,704		113,665
Hanger, Inc. (a)		17,127		673,776
HealthSouth Corp.		43,178		1,438,691
Kindred Healthcare, Inc.		26,769		528,420
National Healthcare Corp.		5,332		287,448
Select Medical Holdings Corp.		24,390		283,168
Skilled Healthcare Group, Inc., Class A (a)		9,672		46,522
Surgical Care Affiliates, Inc. (a)		5,610		195,453
US Physical Therapy, Inc.		6,009		211,877
USMD Holdings, Inc. (a)		509		10,236
				5,711,699
Health Care Management Services — 0.6%
BioScrip, Inc. (a)		29,048		214,955
Centene Corp. (a)		26,894		1,585,401
Computer Programs & Systems, Inc.		5,514		340,821
Magellan Health Services, Inc. (a)		13,356		800,158
Molina Healthcare, Inc. (a)		14,019		487,160
Triple-S Management Corp. (a)		11,723		227,895

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 41

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Health Care Management Services (concluded)
Universal American Corp.		18,922	$	138,131
WellCare Health Plans, Inc. (a)		21,474		1,512,199
				5,306,720
Health Care Services — 2.0%
Acadia Healthcare Co., Inc. (a)		17,487		827,660
Accelerate Diagnostics, Inc. (a)(b)		5,392		65,782
Accretive Health, Inc. (a)		29,253		267,957
Addus HomeCare Corp. (a)		2,640		59,268
Air Methods Corp. (a)		19,213		1,120,694
Alliance HealthCare Services, Inc. (a)		2,415		59,747
Almost Family, Inc. (a)		4,018		129,902
Amedisys, Inc. (a)		15,649		228,945
AMN Healthcare Services, Inc. (a)		22,884		336,395
athenahealth, Inc. (a)(b)		18,158		2,442,251
Chemed Corp. (b)		8,729		668,816
Chindex International, Inc. (a)		6,067		105,748
Corvel Corp. (a)		5,660		264,322
Cross Country Healthcare, Inc. (a)		13,166		131,397
ExamWorks Group, Inc. (a)		14,979		447,423
Gentiva Health Services, Inc. (a)		15,589		193,459
Globus Medical, Inc., Class A (a)		27,022		545,304
Healthways, Inc. (a)		16,967		260,443
HMS Holdings Corp. (a)(b)		43,388		986,209
IPC The Hospitalist Co., Inc. (a)		8,287		492,165
LHC Group, Inc. (a)		5,846		140,538
Medidata Solutions, Inc. (a)(b)		26,280		1,591,780
MiMedx Group, Inc. (a)		44,943		392,802
MWI Veterinary Supply, Inc. (a)		6,323		1,078,641
NeoGenomics, Inc. (a)		16,029		58,025
Omnicell, Inc. (a)		17,016		434,418
OvaScience, Inc. (a)		4,281		39,128
PharMerica Corp. (a)		14,719		316,459
Quality Systems, Inc.		19,794		416,862
Ryman Hospitality Properties		21,967		917,781
Team Health Holdings, Inc. (a)		33,949		1,546,377
TearLab Corp. (a)(b)		14,093		131,629
Tetraphase Pharmaceuticals, Inc. (a)		6,804		91,990
WebMD Health Corp. (a)		14,062		555,449
				17,345,766
Health Care: Miscellaneous — 0.1%
MedAssets, Inc. (a)		30,155		597,974
The Providence Service Corp. (a)		5,118		131,635
				729,609
Home Building — 0.7%
Beazer Homes USA, Inc. (a)		12,494		305,104
Hovnanian Enterprises, Inc., Class A (a)(b)		56,057		371,097
KB Home		41,422		757,194
LGI Homes, Inc. (a)		4,403		78,329
M/I Homes, Inc. (a)		12,050		306,673
MDC Holdings, Inc. (a)		19,438		626,681
Meritage Homes Corp. (a)		17,908		859,405
The Ryland Group, Inc.		22,843		991,615
Standard Pacific Corp. (a)(b)		73,436		664,596
Tile Shop Holdings, Inc. (a)(b)		9,272		167,545
TRI Pointe Homes, Inc. (a)		7,486		149,196
UCP, Inc., Class A (a)		3,824		55,983
WCI Communities, Inc. (a)		3,372		64,371
William Lyon Homes, Class A (a)		6,941		153,674
				5,551,463
Hotel/Motel — 0.2%
Bloomin’ Brands, Inc. (a)		27,325		656,073
Marcus Corp.		9,690		130,234
Morgans Hotel Group Co. (a)		13,151		106,918
Common Stocks	Shares		Value
Hotel/Motel (concluded)
Orient-Express Hotels Ltd., Class A (a)		47,748	$	721,472
				1,614,697
Household Appliances — 0.0%
National Presto Industries, Inc. (a)		2,401		193,281
Household Equipment & Products — 0.2%
Blyth, Inc. (b)		4,563		49,646
Central Garden and Pet Co., Class A (a)		21,025		141,919
CSS Industries, Inc.		4,099		117,559
Helen of Troy Ltd. (a)		15,761		780,327
Libbey, Inc. (a)		10,427		218,967
Sears Hometown and Outlet Stores, Inc. (a)		4,236		108,018
				1,416,436
Household Furnishings — 0.3%
American Woodmark Corp. (a)		4,974		196,622
Bassett Furniture Industries, Inc.		5,225		79,838
Ethan Allen Interiors, Inc.		12,316		374,653
EveryWare Global, Inc. (a)		4,774		39,529
Flexsteel Industries, Inc.		2,312		71,048
Hooker Furniture Corp.		5,206		86,836
Kirkland’s, Inc. (a)		6,969		164,956
La-Z-Boy, Inc.		25,904		803,024
Lifetime Brands, Inc.		4,906		77,171
Norcraft Cos., Inc. (a)		3,604		70,711
Select Comfort Corp. (a)(b)		27,548		580,987
				2,545,375
Insurance: Life — 0.7%
American Equity Investment Life Holding Co.		31,644		834,769
Citizens, Inc. (a)(b)		21,677		189,674
CNO Financial Group, Inc.		109,796		1,942,291
FBL Financial Group, Inc., Class A		4,429		198,375
Health Insurance Innovations, Inc. (a)		2,129		21,524
Independence Holding Co.		3,721		50,196
Kansas City Life Insurance Co.		1,906		90,992
National Western Life Insurance Co., Class A		1,078		240,987
The Phoenix Cos., Inc. (a)		2,909		178,613
Primerica, Inc.		28,140		1,207,487
Symetra Financial Corp.		40,272		763,557
Third Point Reinsurance Ltd. (a)		12,664		234,664
				5,953,129
Insurance: Multi-Line — 0.3%
Crawford & Co., Class B		12,705		117,394
Eastern Insurance Holdings, Inc.		3,105		76,041
eHealth, Inc. (a)(b)		9,137		424,779
Fortegra Financial Corp. (a)		3,075		25,430
Horace Mann Educators Corp.		19,679		620,676
Maiden Holdings Ltd.		24,764		270,671
PICO Holdings, Inc. (a)		11,362		262,576
Platinum Underwriters Holdings Ltd.		14,497		888,376
				2,685,943
Insurance: Property-Casualty — 1.5%
Amerisafe, Inc.		9,131		385,693
Amtrust Financial Services, Inc. (b)		15,360		502,118
Argo Group International Holdings Ltd.		13,502		627,708
Baldwin & Lyons, Inc., Class B		4,537		123,951
Blue Capital Reinsurance Holdings Ltd. (a)		3,021		55,496
Donegal Group, Inc., Class A		3,599		57,224
EMC Insurance Group, Inc.		2,187		66,966
Employers Holdings, Inc.		15,357		486,049
Enstar Group Ltd. (a)(b)		4,700		652,877
Essent Group Ltd. (a)		11,294		271,734
First American Financial Corp.		53,579		1,510,928
Global Indemnity PLC (a)		4,019		101,681
Greenlight Capital Re Ltd. (a)		14,004		472,075

See Notes to Financial Statements.

42 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Insurance: Property-Casualty (concluded)
Hallmark Financial Services, Inc. (a)		6,764	$	60,098
HCI Group, Inc.		4,750		254,125
Hilltop Holdings, Inc. (a)		30,725		710,669
Infinity Property & Casualty Corp.		5,695		408,616
Investors Title Co.		632		51,179
Meadowbrook Insurance Group, Inc.		24,210		168,502
Montpelier Re Holdings Ltd.		21,839		635,515
National Interstate Corp.		3,229		74,267
The Navigators Group, Inc. (a)		5,156		325,653
OneBeacon Insurance Group Ltd.		11,461		181,313
Radian Group, Inc.		85,525		1,207,613
RLI Corp.		10,544		1,026,775
Safety Insurance Group, Inc.		6,457		363,529
Selective Insurance Group, Inc.		27,447		742,716
State Auto Financial Corp.		7,318		155,434
Stewart Information Services Corp.		10,609		342,352
Tower Group International Ltd.		28,732		97,114
United Fire Group, Inc.		10,230		293,192
Universal Insurance Holdings, Inc.		12,619		182,723
				12,595,885
International Trade & Diversified Logistic — 0.0%
Global Sources Ltd. (a)		9,154		74,422
Internet & Catalog Retail — 0.0%
Vitacost.com, Inc. (a)		10,795		62,503
Internet Software & Services — 0.1%
ChannelAdvisor Corp. (a)		3,093		129,009
E2open, Inc. (a)		7,360		175,978
eGain Corp. (a)		6,313		64,645
Global Eagle Entertainment, Inc. (a)		11,319		168,313
Gogo, Inc. (a)		5,563		138,018
				675,963
Leisure Time — 1.0%
Black Diamond, Inc. (a)		10,980		146,363
Callaway Golf Co.		35,370		298,169
Churchill Downs, Inc.		6,798		609,441
ClubCorp Holdings, Inc.		10,341		183,449
International Speedway Corp., Class A		13,753		488,094
Interval Leisure Group, Inc.		19,488		602,179
Johnson Outdoors, Inc.		2,321		62,551
Life Time Fitness, Inc. (a)		21,296		1,000,912
Marriott Vacations Worldwide Corp. (a)		14,541		767,183
Nautilus, Inc. (a)		15,061		126,964
Orbitz Worldwide, Inc. (a)		11,621		83,439
Pool Corp.		23,032		1,339,081
SFX Entertainment, Inc. (a)		9,718		116,616
Smith & Wesson Holding Corp. (a)(b)		27,602		372,351
Speedway Motorsports, Inc.		5,669		112,530
Sturm Ruger & Co., Inc. (b)		9,580		700,202
Town Sports International Holdings, Inc.		11,975		176,751
Vail Resorts, Inc.		17,782		1,337,740
West Marine, Inc. (a)		8,173		116,302
				8,640,317
Luxury Items — 0.0%
Movado Group, Inc.		8,759		385,484
Machinery: Agricultural — 0.2%
Alamo Group, Inc.		3,527		214,053
Lindsay Corp.		6,376		527,614
Titan International, Inc.		26,499		476,452
Titan Machinery, Inc. (a)(b)		8,651		154,161
				1,372,280
Machinery: Construction & Handling — 0.1%
Astec Industries, Inc.		10,079		389,352
Douglas Dynamics, Inc.		11,149		187,526
Common Stocks	Shares		Value
Machinery: Construction & Handling (concluded)
NACCO Industries, Inc., Class A		2,386	$	148,385
				725,263
Machinery: Engines — 0.1%
Briggs & Stratton Corp.		23,902		520,108
Machinery: Industrial — 1.5%
Actuant Corp., Class A		36,152		1,324,609
Altra Holdings, Inc.		13,359		457,145
Applied Industrial Technologies, Inc.		20,840		1,023,036
Chart Industries, Inc. (a)		14,989		1,433,548
Columbus McKinnon Corp. (a)		9,658		262,118
DXP Enterprises, Inc. (a)		4,680		539,136
EnPro Industries, Inc. (a)		10,327		595,352
The ExOne Co. (a)(b)		3,297		199,337
Flow International Corp. (a)		23,426		94,641
Graham Corp.		4,986		180,942
Hardinge, Inc.		5,649		81,741
Hyster-Yale Materials Handling, Inc.		5,200		484,432
John Bean Technologies Corp.		14,277		418,744
Kadant, Inc.		5,566		225,534
Manitex International, Inc. (a)		6,673		105,967
Middleby Corp. (a)(b)		9,281		2,227,162
MTS Systems Corp.		7,833		558,101
Omega Flex, Inc.		1,265		25,882
Proto Labs, Inc. (a)		8,430		600,047
Tecumseh Products Co., Class A (a)		8,921		80,735
Tennant Co.		9,091		616,461
Twin Disc, Inc.		4,023		104,156
Woodward, Inc.		33,989		1,550,238
				13,189,064
Machinery: Specialty — 0.1%
Albany International Corp., Class A		13,856		497,846
Hurco Cos., Inc.		3,095		77,406
Xerium Technologies, Inc. (a)		5,263		86,787
				662,039
Manufactured Housing — 0.0%
Cavco Industries, Inc. (a)(b)		3,472		238,526
Medical & Dental Instruments & Supplies — 2.1%
ABIOMED, Inc. (a)		19,183		512,953
Align Technology, Inc. (a)		36,147		2,065,801
Alphatec Holdings, Inc. (a)		30,132		60,565
AngioDynamics, Inc. (a)		12,218		210,027
Anika Therapeutics, Inc. (a)		5,961		227,472
Antares Pharma, Inc. (a)(b)		55,897		250,419
AtriCure, Inc. (a)		10,399		194,253
Atrion Corp.		771		228,409
Biolase, Inc. (a)		17,107		48,413
Cantel Medical Corp.		16,192		549,071
Cardiovascular Systems, Inc. (a)		12,158		416,898
Cerus Corp. (a)		34,636		223,402
CONMED Corp.		13,729		583,483
CryoLife, Inc.		13,340		147,941
Cutera, Inc. (a)		7,137		72,655
Derma Sciences, Inc. (a)		6,615		71,574
Endologix, Inc. (a)		31,078		542,000
Exactech, Inc. (a)		4,529		107,609
HeartWare International, Inc. (a)		8,089		760,042
ICU Medical, Inc. (a)		6,403		407,935
Insulet Corp. (a)		26,432		980,627
Integra LifeSciences Holdings Corp. (a)(b)		11,326		540,363
Invacare Corp.		15,836		367,554
Landauer, Inc.		4,768		250,845
LDR Holding Corp. (a)		2,783		65,679
Medical Action Industries, Inc. (a)		6,966		59,629
Meridian Bioscience, Inc.		20,581		546,014

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 43

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Medical & Dental Instruments & Supplies (concluded)
Merit Medical Systems, Inc. (a)		21,076	$	331,736
Navidea Biopharmaceuticals, Inc. (a)(b)		58,230		120,536
Neogen Corp. (a)		17,743		810,855
NuVasive, Inc. (a)		21,877		707,283
OraSure Technologies, Inc. (a)		27,840		175,114
Orthofix International NV (a)		9,709		221,559
Owens & Minor, Inc.		31,301		1,144,365
Quidel Corp. (a)		13,881		428,784
Staar Surgical Co. (a)		18,179		294,318
STERIS Corp.		29,111		1,398,784
SurModics, Inc. (a)		6,867		167,486
Tornier NV (a)		12,920		242,767
Unilife Corp. (a)(b)		48,407		212,991
Utah Medical Products, Inc.		1,581		90,370
Vascular Solutions, Inc. (a)		8,191		189,622
Volcano Corp. (a)		27,017		590,321
				17,618,524
Medical Equipment — 1.2%
Abaxis, Inc. (a)		10,949		438,179
Accuray, Inc. (a)		36,779		320,345
Affymetrix, Inc. (a)		35,235		301,964
Analogic Corp.		6,049		535,699
ArthroCare Corp. (a)		13,968		562,072
Cyberonics, Inc. (a)		13,663		895,063
Cynosure, Inc., Class A (a)		9,520		253,994
DexCom, Inc. (a)		34,943		1,237,332
Fluidigm Corp. (a)		12,585		482,257
Greatbatch, Inc. (a)		11,824		523,094
Haemonetics Corp. (a)		25,235		1,063,151
Luminex Corp. (a)		18,504		358,978
Masimo Corp. (a)		24,137		705,524
Merge Healthcare, Inc. (a)		31,669		73,472
Natus Medical, Inc. (a)		15,054		338,715
NxStage Medical, Inc. (a)		29,637		296,370
Oxford Immunotec Global PLC (a)		2,958		57,326
Solta Medical, Inc. (a)		34,592		102,046
Spectranetics Corp. (a)		19,986		499,650
Tandem Diabetes Care, Inc. (a)		4,462		114,986
Thoratec Corp. (a)		28,351		1,037,647
Zeltiq Aesthetics, Inc. (a)		8,853		167,410
				10,365,274
Medical Services — 0.2%
Bio-Reference Laboratories, Inc. (a)(b)		12,116		309,443
PAREXEL International Corp. (a)		28,109		1,269,964
				1,579,407
Metal Fabricating — 0.7%
Ampco-Pittsburgh Corp.		4,092		79,589
Compx International, Inc.		465		6,547
Dynamic Materials Corp.		6,620		143,919
Global Brass & Copper Holdings, Inc.		3,885		64,297
Haynes International, Inc.		6,110		337,516
LB Foster Co., Class A		5,059		239,240
Mueller Industries, Inc.		13,879		874,516
Mueller Water Products, Inc., Series A		78,181		732,556
NN, Inc.		8,546		172,544
Northwest Pipe Co. (a)		4,687		176,981
RBC Bearings, Inc. (a)		11,355		803,366
Rexnord Corp. (a)		15,001		405,177
RTI International Metals, Inc. (a)		15,491		529,947
Worthington Industries, Inc.		26,119		1,099,088
				5,665,283
Metals & Minerals: Diversified — 0.8%
Alpha Natural Resources, Inc. (a)(b)		109,375		780,938
AMCOL International Corp.		13,811		469,298
Common Stocks	Shares		Value
Metals & Minerals: Diversified (concluded)
Commercial Metals Co.		57,780	$	1,174,667
General Moly, Inc. (a)		28,738		38,509
Globe Specialty Metals, Inc.		31,947		575,365
Hecla Mining Co.		165,314		509,167
Materion Corp.		10,176		313,930
Minerals Technologies, Inc.		17,208		1,033,685
Molycorp, Inc. (a)(b)		73,902		415,329
Oil-Dri Corp. of America		2,320		87,789
Paramount Gold and Silver Corp. (a)(b)		66,768		62,214
SunCoke Energy, Inc. (a)		34,612		789,500
United States Lime & Minerals, Inc. (a)		913		55,848
Ur-Energy, Inc. (a)		58,932		81,326
US Silica Holdings, Inc.		10,622		362,316
				6,749,881
Miscellaneous Consumer Staples — 0.1%
Spectrum Brands Holdings, Inc.		10,622		749,382
Office Supplies & Equipment — 0.6%
ACCO Brands Corp. (a)		56,323		378,491
Electronics for Imaging, Inc. (a)		22,962		889,318
Herman Miller, Inc.		28,990		855,785
HNI Corp.		22,497		873,558
Kimball International, Inc., Class B		16,153		242,780
Knoll, Inc.		23,863		436,932
Steelcase, Inc., Class A		41,716		661,616
United Stationers, Inc.		20,050		920,094
				5,258,574
Offshore Drilling & Other Services — 0.1%
Hercules Offshore, Inc. (a)(b)		79,088		516,445
Vantage Drilling Co. (a)(b)		100,262		184,482
				700,927
Oil Well Equipment & Services — 1.1%
Basic Energy Services, Inc. (a)		14,885		234,885
Bolt Technology Corp.		4,124		90,769
Cal Dive International, Inc. (a)(b)		47,051		94,573
Dawson Geophysical Co. (a)		3,893		131,661
Exterran Holdings, Inc. (a)		28,477		973,913
Flotek Industries, Inc. (a)		23,630		474,254
Forum Energy Technologies, Inc. (a)		19,453		549,742
Global Geophysical Services, Inc. (a)		11,304		18,199
Gulf Island Fabrication, Inc.		7,000		162,540
Helix Energy Solutions Group, Inc. (a)		52,399		1,214,609
Hornbeck Offshore Services, Inc. (a)		17,700		871,371
ION Geophysical Corp. (a)		66,452		219,292
Key Energy Services, Inc. (a)		75,439		595,968
Matrix Service Co. (a)		12,935		316,520
Mitcham Industries, Inc. (a)		6,228		110,298
Natural Gas Services Group, Inc. (a)		6,144		169,390
Newpark Resources, Inc. (a)		42,608		523,652
Nuverra Environmental Solutions, Inc. (a)(b)		6,972		117,053
Parker Drilling Co. (a)		58,908		478,922
RigNet, Inc. (a)		5,849		280,343
SEACOR Holdings, Inc. (a)		9,929		905,525
Tesco Corp. (a)		14,952		295,751
TETRA Technologies, Inc. (a)		38,695		478,270
TGC Industries, Inc. (a)		7,698		56,195
Willbros Group, Inc. (a)		19,932		187,759
				9,551,454
Oil, Gas & Consumable Fuels — 0.3%
CARBO Ceramics, Inc.		9,787		1,140,479
Emerald Oil, Inc. (a)		28,172		215,797
EPL Oil & Gas, Inc. (a)		14,818		422,313
Equal Energy Ltd.		17,158		91,624
EXCO Resources, Inc. (a)(b)		65,329		10,453

See Notes to Financial Statements.

44 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Oil, Gas & Consumable Fuels (concluded)
EXCO Resources, Inc. (b)		84,324	$	447,760
				2,328,426
Oil: Crude Producers — 1.9%
Abraxas Petroleum Corp. (a)		39,854		130,721
Apco Oil and Gas International, Inc. (a)		4,389		68,425
Approach Resources, Inc. (a)		17,308		333,871
Athlon Energy, Inc. (a)		9,009		272,522
Bill Barrett Corp. (a)		24,127		646,121
Bonanza Creek Energy, Inc. (a)		14,561		632,967
BPZ Resources, Inc. (a)		57,134		103,984
Callon Petroleum Co. (a)		19,355		126,388
Carrizo Oil & Gas, Inc. (a)		22,470		1,005,982
Clayton Williams Energy, Inc. (a)		2,922		239,458
Comstock Resources, Inc.		23,976		438,521
Contango Oil & Gas Co. (a)		7,343		347,030
Diamondback Energy, Inc. (a)		9,647		509,940
Endeavour International Corp. (a)		22,946		120,466
Energy XXI Bermuda Ltd.		39,288		1,063,133
Evolution Petroleum Corp.		8,144		100,497
Forest Oil Corp. (a)		59,488		214,752
FX Energy, Inc. (a)		25,819		94,498
Gastar Exploration Ltd. (a)		27,702		191,698
Goodrich Petroleum Corp. (a)		15,555		264,746
Halcon Resources Corp. (a)(b)		114,815		443,186
Isramco, Inc. (a)		441		56,029
Jones Energy, Inc., Class A (a)		5,375		77,830
Kodiak Oil & Gas Corp. (a)		131,241		1,471,212
Magnum Hunter Resources Corp. (a)		85,066		621,832
Midstates Petroleum Co., Inc. (a)(b)		16,182		107,125
Northern Oil and Gas, Inc. (a)		31,570		475,760
Panhandle Oil and Gas, Inc.		3,343		111,690
PDC Energy, Inc. (a)		17,617		937,577
Penn Virginia Corp. (a)		27,423		258,599
PetroQuest Energy, Inc. (a)(b)		27,744		119,854
Quicksilver Resources, Inc. (a)(b)		62,357		191,436
Resolute Energy Corp. (a)(b)		33,609		303,489
Rex Energy Corp. (a)		22,396		441,425
Rosetta Resources, Inc. (a)		30,211		1,451,336
Sanchez Energy Corp. (a)		18,870		462,504
Stone Energy Corp. (a)		24,731		855,445
Swift Energy Co. (a)(b)		21,565		291,127
Synergy Resources Corp. (a)		25,108		232,500
Triangle Petroleum Corp. (a)		33,696		280,351
Vaalco Energy, Inc. (a)		28,910		199,190
W&T Offshore, Inc.		17,319		277,104
Warren Resources, Inc. (a)		35,323		110,914
ZaZa Energy Corp. (a)		17,618		16,836
				16,700,071
Oil: Integrated — 0.2%
Targa Resources Corp.		16,250		1,432,763
Oil: Refining & Marketing — 0.3%
Adams Resources & Energy, Inc.		1,039		71,172
Alon USA Energy, Inc.		11,783		194,891
Arabian American Development Co. (a)		9,774		122,664
Clean Energy Fuels Corp. (a)(b)		34,115		439,401
Delek US Holdings, Inc.		18,456		635,071
Miller Energy Resources, Inc. (a)		14,831		104,410
Renewable Energy Group, Inc. (a)		10,494		120,261
Western Refining, Inc.		26,908		1,141,168
				2,829,038
Paints & Coatings — 0.2%
Chase Corp.		3,104		109,571
Ferro Corp. (a)		35,824		459,622
Common Stocks	Shares		Value
Paints & Coatings (concluded)
HB Fuller Co.		24,846		1,292,986
				1,862,179
Paper — 0.5%
Clearwater Paper Corp. (a)		10,401		546,053
KapStone Paper and Packaging Corp. (a)		20,166		1,126,473
Neenah Paper, Inc.		7,907		338,182
PH Glatfelter Co.		21,217		586,438
Resolute Forest Products (a)		34,567		553,763
Schweitzer-Mauduit International, Inc.		15,518		798,711
Wausau Paper Corp.		24,482		310,432
				4,260,052
Personal Care — 0.1%
The Female Health Co.		10,474		89,029
Orchids Paper Products Co.		2,900		95,236
PhotoMedex, Inc. (a)(b)		6,351		82,245
USANA Health Sciences, Inc. (a)		2,984		225,531
WD-40 Co.		7,646		571,003
				1,063,044
Pharmaceuticals — 1.9%
ACADIA Pharmaceuticals, Inc. (a)		34,666		866,303
AcelRx Pharmaceuticals, Inc. (a)(b)		11,334		128,188
Achillion Pharmaceuticals, Inc. (a)		48,523		161,096
Aerie Pharmaceuticals, Inc. (a)		3,739		67,152
Agios Pharmaceuticals, Inc. (a)		3,309		79,251
Akorn, Inc. (a)		28,774		708,704
American Pacific Corp. (a)		2,860		106,564
Ampio Pharmaceuticals, Inc. (a)(b)		15,079		107,513
Anacor Pharmaceuticals, Inc. (a)		12,596		211,361
Aratana Therapeutics, Inc. (a)		3,219		61,483
Auxilium Pharmaceuticals, Inc. (a)		24,476		507,632
AVANIR Pharmaceuticals, Inc. (a)		72,066		242,142
Cadence Pharmaceuticals, Inc. (a)		30,629		277,192
Cambrex Corp. (a)		14,874		265,203
Cempra, Inc. (a)		9,568		118,548
Chimerix, Inc. (a)		4,110		62,102
Conatus Pharmaceuticals, Inc. (a)		2,902		18,718
Corcept Therapeutics, Inc. (a)		25,578		82,361
Depomed, Inc. (a)		28,051		296,780
Enanta Pharmaceuticals, Inc. (a)		1,791		48,858
Endocyte, Inc. (a)		15,279		163,333
Esperion Therapeutics, Inc. (a)		2,241		30,791
Hi-Tech Pharmacal Co., Inc. (a)		5,511		239,122
Impax Laboratories, Inc. (a)		33,900		852,246
Infinity Pharmaceuticals, Inc. (a)		23,796		328,623
Ironwood Pharmaceuticals, Inc. (a)(b)		46,161		535,929
Isis Pharmaceuticals, Inc. (a)(b)		55,517		2,211,797
Lannett Co., Inc. (a)		9,252		306,241
Lifevantage Corp. (a)		49,992		82,487
The Medicines Co. (a)		31,273		1,207,763
MEI Pharma, Inc. (a)		5,876		47,067
Pacira Pharmaceuticals, Inc. (a)		13,631		783,646
Pernix Therapeutics Holdings (a)		8,814		22,211
Portola Pharmaceuticals, Inc. (a)		5,510		141,883
Pozen, Inc. (a)		13,140		105,646
Prestige Brands Holdings, Inc. (a)		25,280		905,024
Questcor Pharmaceuticals, Inc.		25,653		1,396,806
Receptos, Inc. (a)		2,795		81,027
Relypsa, Inc. (a)		2,957		73,925
Sagent Pharmaceuticals, Inc. (a)		9,331		236,821
Santarus, Inc. (a)		26,913		860,139
Sciclone Pharmaceuticals, Inc. (a)		27,173		136,952
SIGA Technologies, Inc. (a)(b)		17,939		58,661
Spectrum Pharmaceuticals, Inc. (a)		31,474		278,545
Supernus Pharmaceuticals, Inc. (a)(b)		7,909		59,634
T.G. Therapeutics, Inc. (a)		7,510		29,289

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 45

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares			Value
Pharmaceuticals (concluded)
TherapeuticsMD, Inc. (a)		42,900		$	223,509
Vical, Inc. (a)		37,258			43,964
Vivus, Inc. (a)(b)		49,925			453,319
XenoPort, Inc. (a)		21,075			121,181
Zogenix, Inc. (a)		49,418			169,998
					16,604,730
Plastics — 0.1%
A. Schulman, Inc.		14,570			513,738
Ply Gem Holdings, Inc. (a)		7,999			144,222
					657,960
Power Transmission Equipment — 0.3%
Advanced Energy Industries, Inc. (a)		19,434			444,261
Generac Holdings, Inc.		25,462			1,442,168
Global Power Equipment Group, Inc.		8,472			165,797
Maxwell Technologies, Inc. (a)		14,163			110,047
Powell Industries, Inc.		4,539			304,068
Vicor Corp. (a)		8,532			114,499
					2,580,840
Precious Metals & Minerals — 0.1%
Horsehead Holding Corp. (a)		24,956			404,537
Stillwater Mining Co. (a)		58,442			721,174
					1,125,711
Printing & Copying Services — 0.1%
Casella Waste Systems, Inc. (a)		18,624			108,019
Cenveo, Inc. (a)		26,099	��		89,781
VistaPrint NV (a)		16,125			916,706
					1,114,506
Producer Durables: Miscellaneous — 0.1%
Blount International, Inc. (a)		24,396			353,010
Park-Ohio Holdings Corp. (a)		4,308			225,739
					578,749
Production Technology Equipment — 1.0%
ATMI, Inc. (a)		15,790			477,016
Axcelis Technologies, Inc. (a)		52,483			128,058
Brooks Automation, Inc.		33,015			346,327
Cognex Corp. (a)		42,960			1,640,213
Cohu, Inc.		12,407			130,273
Electro Scientific Industries, Inc.		12,002			125,541
Entegris, Inc. (a)		68,951			799,832
FEI Co.		20,620			1,842,603
GSI Group, Inc. (a)		15,118			169,926
LTX-Credence Corp. (a)		23,743			189,707
MKS Instruments, Inc.		26,247			785,835
Nanometrics, Inc. (a)		11,471			218,523
Photronics, Inc. (a)		30,109			271,884
Rudolph Technologies, Inc. (a)		16,270			191,010
Tessera Technologies, Inc.		26,198			516,363
Ultra Clean Holdings, Inc. (a)		11,566			116,007
Ultratech, Inc. (a)		13,760			399,040
Veeco Instruments, Inc. (a)		19,386			637,993
					8,986,151
Publishing — 0.4%
AH Belo Corp.		9,103			67,999
Courier Corp.		5,551			100,418
Daily Journal Corp. (a)		428			79,176
Dex Media, Inc. (a)(b)		8,408			57,006
Journal Communications, Inc., Class A (a)		21,967			204,513
Martha Stewart Living Omnimedia, Class A (a)		11,716			49,207
The McClatchy Co., Class A (a)		29,524			100,382
Media General, Inc., Class A (a)(b)		9,740			220,124
Meredith Corp.		17,663			914,943
Common Stocks	Shares			Value
Publishing (concluded)
The New York Times Co., Class A		63,755			1,011,792
Scholastic Corp.		13,122			446,279
					3,251,839
Radio & TV Broadcasters — 0.4%
Beasley Broadcasting Group, Inc., Class A		2,018			17,617
Central European Media Enterprises Ltd. (a)		38,685			148,550
Crown Media Holdings, Inc., Class A (a)		17,005			60,028
Cumulus Media, Inc., Class A (a)		42,854			331,261
Entercom Communications Corp., Class A (a)		11,651			122,452
Entravision Communications Corp., Class A		27,631			168,273
Gray Television, Inc. (a)		24,916			370,750
Nexstar Broadcasting Group, Inc., Class A		14,518			809,088
Saga Communications, Inc., Class A		2,354			118,406
Salem Communications Corp., Class A		5,038			43,831
Sinclair Broadcast Group, Inc., Class A		33,849			1,209,425
					3,399,681
Railroad Equipment — 0.1%
American Railcar Industries, Inc.		4,747			217,176
FreightCar America, Inc.		6,081			161,876
Greenbrier Cos., Inc. (a)(b)		12,124			398,152
					777,204
Real Estate — 0.2%
AV Homes, Inc. (a)		4,569			83,019
Consolidated-Tomoka Land Co.		2,836			102,918
Forestar Group, Inc. (a)		17,185			365,525
Griffin Land & Nurseries, Inc.		1,248			41,658
HFF, Inc., Class A (a)		16,396			440,233
Kennedy-Wilson Holdings, Inc.		28,070			624,558
Tejon Ranch Co. (a)		6,845			251,622
					1,909,533
Real Estate Investment Trusts (REITs) — 6.9%
Acadia Realty Trust		27,437			681,261
AG Mortgage Investment Trust, Inc.		14,422			225,560
Agree Realty Corp.		7,570			219,681
Alexander & Baldwin, Inc.		21,312			889,350
Alexander’s, Inc.		1,054			347,820
Altisource Residential Corp.		20,964			631,226
American Assets Trust, Inc.		15,430			484,965
American Capital Mortgage Investment Corp.		26,585			464,174
American Realty Capital Properties, Inc.		76,586			984,896
American Residential Properties, Inc. (a)		6,993			120,000
AmREIT, Inc., Class B		10,095			169,596
Anworth Mortgage Asset Corp.		73,405			309,035
Apollo Commercial Real Estate Finance, Inc.		18,954			308,003
Ares Commercial Real Estate Corp.		10,932			143,209
Armada Hoffler Properties, Inc.		9,299			86,295
ARMOUR Residential REIT, Inc.		186,915			749,529
Ashford Hospitality Prime, Inc.		5,980			108,836
Ashford Hospitality Trust, Inc.		30,835			255,314
Associated Estates Realty Corp.		28,778			461,887
Aviv REIT, Inc.		5,843			138,479
Campus Crest Communities, Inc.		32,391			304,799
Capstead Mortgage Corp.		44,425			536,654
Cedar Realty Trust, Inc.		36,416			227,964
Chambers Street Properties		117,399			898,102
Chatham Lodging Trust		13,205			270,042
Chesapeake Lodging Trust		24,223			612,600
Colony Financial, Inc.		38,240			775,890
Coresite Realty Corp.		10,253			330,044
Cousins Properties, Inc.		83,421			859,236
CubeSmart		66,043			1,052,725
CyrusOne, Inc.		9,307			207,825
CYS Investments, Inc.		87,281			646,752
DCT Industrial Trust, Inc.		144,200			1,028,146

See Notes to Financial Statements.

46 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Real Estate Investment Trusts (REITs) (continued)
DiamondRock Hospitality Co.		96,846	$	1,118,571
DuPont Fabros Technology, Inc.		30,885		763,168
Dynex Capital, Inc.		27,992		223,936
EastGroup Properties, Inc.		15,046		871,615
Education Realty Trust, Inc.		56,356		497,060
Ellington Residential Mortgage REIT		3,161		48,616
Empire State Realty Trust, Inc., Class A		40,889		625,602
EPR Properties		25,623		1,259,627
Equity One, Inc.		30,009		673,402
Excel Trust, Inc.		24,272		276,458
FelCor Lodging Trust, Inc. (a)		61,577		502,468
First Industrial Realty Trust, Inc.		53,309		930,242
First Potomac Realty Trust		29,034		337,665
Franklin Street Properties Corp.		45,132		539,327
The Geo Group, Inc.		32,441		1,045,249
Getty Realty Corp.		12,943		237,763
Gladstone Commercial Corp.		8,334		149,762
Glimcher Realty Trust		71,420		668,491
Government Properties Income Trust		24,755		615,162
Gramercy Property Trust, Inc. (a)		29,839		171,574
Healthcare Realty Trust, Inc.		47,873		1,020,174
Hersha Hospitality Trust (b)		101,050		562,849
Highwoods Properties, Inc.		44,532		1,610,722
Hudson Pacific Properties, Inc.		21,666		473,835
Inland Real Estate Corp.		42,713		449,341
Invesco Mortgage Capital, Inc.		67,547		991,590
Investors Real Estate Trust		50,543		433,659
iStar Financial, Inc. (a)		42,193		602,094
JAVELIN Mortgage Investment Corp.		7,395		103,012
Kite Realty Group Trust		64,578		424,278
KYTHERA Biopharmaceuticals, Inc. (a)		5,859		218,248
LaSalle Hotel Properties (b)		51,385		1,585,741
Lexington Realty Trust		76,664		782,739
LTC Properties, Inc.		17,348		613,946
Medical Properties Trust, Inc.		80,224		980,337
Monmouth Real Estate Investment Corp., Class A		23,247		211,315
National Health Investors, Inc.		14,532		815,245
New Residential Investment Corp.		125,473		838,160
New York Mortgage Trust, Inc.		32,220		225,218
NorthStar Realty Finance Corp.		143,488		1,929,914
One Liberty Properties, Inc.		6,105		122,894
Parkway Properties, Inc.		27,536		531,164
Pebblebrook Hotel Trust		30,469		937,226
Pennsylvania Real Estate Investment Trust		33,873		642,910
PennyMac Mortgage Investment Trust (c)		28,588		656,381
Physicians Realty Trust		10,315		131,413
Potlatch Corp.		20,120		839,809
PS Business Parks, Inc.		9,600		733,632
QTS Realty Trust, Inc., Class A		7,100		175,938
RAIT Financial Trust		34,578		310,165
Ramco-Gershenson Properties Trust		33,249		523,339
Redwood Trust, Inc.		40,821		790,703
Resource Capital Corp.		63,665		377,533
Retail Opportunity Investments Corp.		35,763		526,431
Rexford Industrial Realty, Inc.		8,276		109,243
RLJ Lodging Trust		61,127		1,486,609
Rouse Properties, Inc.		11,235		249,305
Sabra Health Care REIT, Inc.		18,635		487,119
Saul Centers, Inc.		3,996		190,729
Select Income REIT		11,116		297,242
Silver Bay Realty Trust Corp.		7,780		124,402
Sovran Self Storage, Inc.		15,577		1,015,153
STAG Industrial, Inc.		20,955		427,272
Strategic Hotels & Resorts, Inc. (a)		89,789		848,506
Summit Hotel Properties, Inc.		40,422		363,798
Sun Communities, Inc.		17,887		762,702
Sunstone Hotel Investors, Inc.		90,570		1,213,638
Common Stocks	Shares		Value
Real Estate Investment Trusts (REITs) (concluded)
Terreno Realty Corp.		12,627		223,498
UMH Properties, Inc.		8,491		79,985
Universal Health Realty Income Trust		5,453		218,447
Urstadt Biddle Properties, Inc., Class A		11,450		211,253
Walter Investment Management Corp. (a)		18,254		645,461
Washington Real Estate Investment Trust		33,241		776,510
Western Asset Mortgage Capital Corp. (b)		12,616		187,726
Whitestone REIT		11,391		152,298
Winthrop Realty Trust		16,255		179,618
ZAIS Financial Corp.		2,791		44,740
				59,552,862
Recreational Vehicles & Boats — 0.4%
Arctic Cat, Inc.		6,534		372,307
Brunswick Corp.		44,717		2,059,665
Drew Industries, Inc.		11,345		580,864
Marine Products Corp.		5,212		52,381
Winnebago Industries, Inc. (a)		13,890		381,280
				3,446,497
Rental & Leasing Services: Consumer — 0.1%
Rent-A-Center, Inc.		26,394		879,976
Restaurants — 1.6%
AFC Enterprises, Inc. (a)		11,810		454,685
Biglari Holdings, Inc. (a)		716		362,754
BJ’s Restaurants, Inc. (a)(b)		12,234		379,988
Bob Evans Farms, Inc.		13,801		698,193
Bravo Brio Restaurant Group, Inc. (a)		9,812		159,641
Buffalo Wild Wings, Inc. (a)		9,264		1,363,661
Carrols Restaurant Group, Inc. (a)		11,423		75,506
CEC Entertainment, Inc.		8,813		390,240
The Cheesecake Factory, Inc.		26,365		1,272,639
Cracker Barrel Old Country Store, Inc.		9,707		1,068,449
Denny’s Corp. (a)		45,469		326,922
Diamond Resorts International, Inc. (a)		9,092		167,838
DineEquity, Inc.		8,196		684,776
Diversified Restaurant Holdings, Inc. (a)		5,300		25,281
Einstein Noah Restaurant Group, Inc.		3,214		46,603
Ellie Mae, Inc. (a)		13,035		350,250
Fiesta Restaurant Group, Inc. (a)		11,080		578,819
Ignite Restaurant Group, Inc. (a)		3,527		44,087
Jack in the Box, Inc. (a)		21,982		1,099,540
Jamba, Inc. (a)		8,090		100,559
Krispy Kreme Doughnuts, Inc. (a)		32,393		624,861
Luby’s, Inc. (a)		9,547		73,703
Nathan’s Famous, Inc. (a)		1,304		65,735
Noodles & Co. (a)		2,996		107,616
Papa John’s International, Inc.		15,834		718,864
Potbelly Corp. (a)		4,198		101,927
Red Robin Gourmet Burgers, Inc. (a)		7,004		515,074
Ruby Tuesday, Inc. (a)		30,360		210,395
Ruth’s Hospitality Group, Inc.		17,802		252,966
Sonic Corp. (a)(b)		27,793		561,141
Texas Roadhouse, Inc.		30,862		857,964
				13,740,677
Scientific Instruments: Control & Filter — 0.6%
Brady Corp., Class A		22,877		707,586
CIRCOR International, Inc.		8,679		701,090
Energy Recovery, Inc. (a)		21,459		119,312
ESCO Technologies, Inc.		13,109		449,114
The Gorman-Rupp Co.		9,331		311,927
Mine Safety Appliances Co.		14,003		717,094
PMFG, Inc. (a)		10,067		91,106
Sun Hydraulics Corp.		10,653		434,962
Thermon Group Holdings, Inc. (a)		13,411		366,523
Watts Water Technologies, Inc., Class A		14,096		872,119
				4,770,833

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 47

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Scientific Instruments: Electrical — 0.7%
American Superconductor Corp. (a)		24,270	$	39,803
AZZ, Inc.		12,597		615,489
Coleman Cable, Inc.		4,401		115,394
EnerSys, Inc.		23,761		1,665,409
Franklin Electric Co., Inc.		23,421		1,045,513
GrafTech International Ltd. (a)		57,816		649,274
Houston Wire & Cable Co.		8,656		115,817
Littelfuse, Inc.		10,929		1,015,632
Preformed Line Products Co.		1,248		91,304
Taser International, Inc. (a)		25,341		402,415
				5,756,050
Scientific Instruments: Gauges & Meters — 0.3%
Badger Meter, Inc.		7,123		388,204
FARO Technologies, Inc. (a)		8,468		493,685
Itron, Inc. (a)		19,579		811,158
Measurement Specialties, Inc. (a)		7,631		463,125
Mesa Laboratories, Inc.		1,273		100,032
Vishay Precision Group, Inc. (a)		5,947		88,551
Zygo Corp. (a)		8,036		118,772
				2,463,527
Scientific Instruments: Pollution Control — 0.3%
Ceco Environmental Corp.		8,528		137,898
Darling International, Inc. (a)		78,246		1,633,776
Heritage-Crystal Clean, Inc. (a)		4,246		87,001
Team, Inc. (a)		10,230		433,138
TRC Cos., Inc. (a)		7,864		56,149
US Ecology, Inc.		10,665		396,631
				2,744,593
Securities Brokerage & Services — 0.3%
BGC Partners, Inc., Class A		63,141		382,634
FXCM, Inc.		18,081		322,565
Gain Capital Holdings, Inc.		5,398		40,539
GFI Group, Inc.		33,860		132,393
Gladstone Investment Corp.		12,913		104,079
INTL. FCStone, Inc. (a)		6,732		124,811
Investment Technology Group, Inc. (a)		18,421		378,736
Ladenburg Thalmann Financial Services, Inc. (a)		51,518		161,251
MarketAxess Holdings, Inc.		18,516		1,238,165
SWS Group, Inc. (a)		13,948		84,804
				2,969,977
Semiconductors & Components — 2.2%
Aeroflex Holding Corp. (a)		9,451		61,432
Alpha & Omega Semiconductor Ltd. (a)		8,391		64,695
Amkor Technology, Inc. (a)		34,936		214,158
ANADIGICS, Inc. (a)		39,976		73,556
Applied Micro Circuits Corp. (a)(b)		36,192		484,249
Audience, Inc. (a)		4,700		54,708
Cavium, Inc. (a)		25,413		877,003
Ceva, Inc. (a)		11,073		168,531
Cirrus Logic, Inc. (a)		31,389		641,277
Cypress Semiconductor Corp. (a)		72,882		765,261
Diodes, Inc. (a)		17,776		418,803
DSP Group, Inc. (a)		9,471		91,963
Entropic Communications, Inc. (a)		44,638		210,245
Exar Corp. (a)		18,962		223,562
FormFactor, Inc. (a)(b)		26,985		162,450
GT Advanced Technologies, Inc. (a)		66,385		578,877
Hittite Microwave Corp. (a)		15,587		962,186
Inphi Corp. (a)		13,062		168,500
Integrated Device Technology, Inc. (a)		65,223		664,622
Integrated Silicon Solution, Inc. (a)		14,028		169,599
Intermolecular, Inc. (a)		8,231		40,497
International Rectifier Corp. (a)		34,366		895,922
Intersil Corp., Class A		63,000		722,610
Common Stocks	Shares		Value
Semiconductors & Components (concluded)
IXYS Corp.		11,708		151,853
Kopin Corp. (a)		33,170		139,977
Lattice Semiconductor Corp. (a)		57,282		315,624
M/A-COM Technology Solutions Holdings, Inc. (a)		5,099		86,632
MaxLinear, Inc., Class A (a)		11,746		122,511
Micrel, Inc.		23,167		228,658
Microsemi Corp. (a)		45,927		1,145,879
Monolithic Power Systems, Inc. (a)		18,217		631,401
MoSys, Inc. (a)		22,743		125,541
OmniVision Technologies, Inc. (a)		26,737		459,876
Pericom Semiconductor Corp. (a)		11,001		97,469
PLX Technology, Inc. (a)		22,057		145,135
PMC-Sierra, Inc. (a)		101,019		649,552
Power Integrations, Inc.		14,331		799,956
Rambus, Inc. (a)		55,279		523,492
RF Micro Devices, Inc. (a)		139,176		718,148
Rubicon Technology, Inc. (a)(b)		8,597		85,540
Semtech Corp. (a)(b)		33,305		841,950
Sigma Designs, Inc. (a)		14,774		69,733
Silicon Image, Inc. (a)		38,409		236,215
Spansion, Inc., Class A (a)		23,449		325,707
SunEdison, Inc. (a)		131,723		1,718,985
Supertex, Inc. (a)		4,749		118,962
TriQuint Semiconductor, Inc. (a)		80,791		673,797
				19,127,299
Semiconductors & Semiconductor Equipment — 0.0%
Ambarella, Inc. (a)		9,168		311,070
Shipping — 0.5%
Frontline Ltd. (a)		25,184		94,188
GasLog Ltd.		13,143		224,614
Gulfmark Offshore, Inc., Class A		13,226		623,341
International Shipholding Corp.		2,703		79,739
Knightsbridge Tankers Ltd.		15,387		141,407
Matson, Inc.		21,158		552,435
Nordic American Tankers Ltd.		37,492		363,672
Scorpio Tankers, Inc.		91,283		1,076,227
Ship Finance International Ltd.		27,833		455,905
Teekay Tankers Ltd., Class A		30,357		119,303
Ultrapetrol Bahamas Ltd. (a)		10,218		38,215
UTI Worldwide, Inc.		44,875		788,005
				4,557,051
Software — 0.3%
Comverse, Inc. (a)		11,013		427,304
FleetMatics Group PLC (a)		8,602		372,037
Fusion-io, Inc. (a)		40,554		361,336
Gigamon, Inc. (a)		3,775		106,002
Model N, Inc. (a)		3,970		46,806
Qualys, Inc. (a)		7,415		171,361
Rally Software Development Corp. (a)		3,345		65,060
Trulia, Inc. (a)		13,729		484,222
Vringo, Inc. (a)(b)		32,568		96,401
				2,130,529
Specialty Retail — 3.2%
1-800-Flowers.com, Inc., Class A (a)		12,435		67,273
America’s Car-Mart, Inc. (a)(b)		4,013		169,469
ANN, Inc. (a)		23,347		853,566
Asbury Automotive Group, Inc. (a)		15,420		828,671
Aéropostale, Inc. (a)(b)		38,965		354,192
Barnes & Noble, Inc. (a)		20,026		299,389
bebe Stores, Inc.		16,724		88,972
Big 5 Sporting Goods Corp.		8,428		167,043
Blue Nile, Inc. (a)		6,153		289,745
Body Central Corp. (a)		7,986		31,465
Brown Shoe Co., Inc.		21,422		602,815

See Notes to Financial Statements.

48 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Specialty Retail (concluded)
The Buckle, Inc.		13,830	$	726,905
Burlington Stores, Inc. (a)		7,625		244,000
The Cato Corp., Class A		13,681		435,056
The Children’s Place Retail Stores, Inc. (a)		11,440		651,737
Christopher & Banks Corp. (a)		18,172		155,189
Citi Trends, Inc. (a)		7,764		131,988
Conn’s, Inc. (a)		11,092		873,939
The Container Store Group, Inc. (a)		7,124		332,050
Destination Maternity Corp.		6,748		201,630
Destination XL Group, Inc. (a)		21,126		138,798
Express, Inc. (a)		42,226		788,359
The Finish Line, Inc., Class A		24,391		687,094
Five Below, Inc. (a)		16,261		702,475
Francesca’s Holdings Corp. (a)		21,876		402,737
FTD Cos., Inc. (a)		9,189		299,378
Genesco, Inc. (a)		11,879		867,880
Group 1 Automotive, Inc.		10,762		764,317
Haverty Furniture Cos., Inc.		9,777		306,020
hhgregg, Inc. (a)		6,216		86,837
Hibbett Sports, Inc. (a)(b)		12,849		863,581
Jos A. Bank Clothiers, Inc. (a)		13,840		757,463
Lithia Motors, Inc., Class A		10,982		762,370
Lumber Liquidators Holdings, Inc. (a)		13,577		1,396,938
MarineMax, Inc. (a)		11,640		187,171
Mattress Firm Holding Corp. (a)		6,665		286,862
The Men’s Wearhouse, Inc.		23,054		1,177,598
Monro Muffler Brake, Inc.		15,479		872,396
New York & Co., Inc. (a)		13,936		60,900
Office Depot, Inc. (a)		237,459		1,256,158
Pacific Sunwear of California, Inc. (a)		22,503		75,160
Penske Automotive Group, Inc.		20,879		984,654
The Pep Boys-Manny Moe & Jack (a)		26,321		319,537
Pier 1 Imports, Inc.		46,887		1,082,152
RadioShack Corp. (a)(b)		48,417		125,884
Regis Corp.		23,649		343,147
Restoration Hardware Holdings, Inc. (a)		8,727		587,327
RetailMeNot, Inc. (a)		4,747		136,666
Shoe Carnival, Inc.		7,489		217,256
Shutterfly, Inc. (a)		18,778		956,364
Sonic Automotive, Inc., Class A		19,297		472,391
Stage Stores, Inc.		16,257		361,231
Stamps.com, Inc. (a)		6,468		272,303
Stein Mart, Inc.		13,834		186,067
Systemax, Inc. (a)		5,221		58,736
Tilly’s, Inc., Class A (a)		4,755		54,445
Vitamin Shoppe, Inc. (a)		15,025		781,450
The Wet Seal, Inc., Class A (a)		43,082		117,614
Zale Corp. (a)		16,100		253,897
Zumiez, Inc. (a)		10,470		272,220
				27,828,927
Steel — 0.2%
AK Steel Holding Corp. (a)		67,594		554,271
Carbonite, Inc. (a)		5,837		69,052
Handy & Harman Ltd. (a)		2,641		63,938
Olympic Steel, Inc.		4,364		126,469
Schnitzer Steel Industries, Inc., Class A		12,802		418,241
Shiloh Industries, Inc. (a)		2,966		57,837
Universal Stainless & Alloy Products, Inc. (a)		3,347		120,693
				1,410,501
Synthetic Fibers & Chemicals — 0.0%
Zoltek Cos., Inc. (a)		13,627		228,252
Technology: Miscellaneous — 0.3%
Acorn Energy, Inc.		10,767		43,822
Benchmark Electronics, Inc. (a)		26,897		620,783
CTS Corp.		16,598		330,466
Fabrinet (a)		14,035		288,560
Common Stocks	Shares		Value
Technology: Miscellaneous (concluded)
Hutchinson Technology, Inc. (a)		11,080		35,456
Pendrell Corp. (a)		78,535		157,855
Plexus Corp. (a)		16,870		730,302
Vocus, Inc. (a)		9,166		104,401
				2,311,645
Telecommunications Equipment — 0.3%
Applied Optoelectronics, Inc. (a)		2,009		30,155
ARRIS Group, Inc. (a)		57,602		1,403,473
CalAmp Corp. (a)(b)		17,341		485,028
Inteliquent, Inc.		16,217		185,198
Tessco Technologies, Inc.		2,655		107,050
Ubiquiti Networks, Inc. (a)		6,236		286,606
Vocera Communications, Inc. (a)		10,566		164,935
				2,662,445
Textile Products — 0.1%
Culp, Inc.		3,901		79,776
Interface, Inc.		29,365		644,855
Unifi, Inc. (a)		7,420		202,121
				926,752
Textiles Apparel & Shoes — 1.3%
American Apparel, Inc. (a)(b)		28,431		34,970
Columbia Sportswear Co.		6,387		502,976
Crocs, Inc. (a)		43,584		693,857
Fifth & Pacific Cos., Inc. (a)		59,301		1,901,783
G-III Apparel Group Ltd. (a)		8,307		612,974
Iconix Brand Group, Inc. (a)		25,477		1,011,437
The Jones Group, Inc.		39,722		594,241
Oxford Industries, Inc.		6,668		537,908
Perry Ellis International, Inc. (a)		5,983		94,472
Quiksilver, Inc. (a)(b)		65,575		575,093
RG Barry Corp.		4,759		91,849
Skechers U.S.A., Inc., Class A (a)		19,128		633,711
Steven Madden Ltd. (a)		29,727		1,087,711
Tumi Holdings, Inc. (a)		23,737		535,269
Vera Bradley, Inc. (a)		10,763		258,742
Vince Holding Corp. (a)		5,754		176,475
Weyco Group, Inc.		3,116		91,704
Wolverine World Wide, Inc.		49,592		1,684,144
				11,119,316
Tobacco — 0.2%
Alliance One International, Inc. (a)		42,204		128,722
Star Scientific, Inc. (a)(b)		81,103		94,080
Universal Corp.		11,535		629,811
Vector Group Ltd.		31,509		515,802
				1,368,415
Toys — 0.0%
JAKKS Pacific, Inc.		9,464		63,693
LeapFrog Enterprises, Inc. (a)		31,647		251,277
				314,970
Transportation Miscellaneous — 0.3%
Echo Global Logistics, Inc. (a)		8,868		190,485
Hub Group, Inc., Class A (a)(b)		18,293		729,525
Odyssey Marine Exploration, Inc. (a)		40,678		82,170
Pacer International, Inc. (a)		17,067		140,973
Textainer Group Holdings Ltd.		10,598		426,251
Wesco Aircraft Holdings, Inc. (a)(b)		20,349		446,050
XPO Logistics, Inc. (a)(b)		14,549		382,493
				2,397,947
Truckers — 0.6%
Arkansas Best Corp.		12,725		428,578
Celadon Group, Inc.		10,000		194,800
Forward Air Corp.		14,927		655,445
Heartland Express, Inc.		22,767		446,689

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 49

Schedule of Investments (continued) Master Small Cap Index Series (Percentages shown are based on Net Assets)

Common Stocks	Shares		Value
Truckers (concluded)
Knight Transportation, Inc.		29,058	$	532,924
Marten Transport Ltd.		11,607		234,345
Patriot Transportation Holding, Inc. (a)		3,142		130,424
Quality Distribution, Inc. (a)		10,191		130,751
Roadrunner Transportation Systems, Inc. (a)		9,235		248,883
Saia, Inc. (a)		11,992		384,344
Swift Transportation Co. (a)		41,445		920,493
Universal Truckload Services, Inc.		2,644		80,668
Werner Enterprises, Inc.		22,588		558,601
YRC Worldwide, Inc. (a)		5,301		92,078
				5,039,023
Utilities: Electrical — 1.7%
ALLETE, Inc.		19,735		984,382
Atlantic Power Corp.		60,180		209,426
Avista Corp.		29,696		837,130
Black Hills Corp.		21,958		1,153,015
Cleco Corp.		29,829		1,390,628
El Paso Electric Co.		19,888		698,268
Empire District Electric Co.		21,142		479,712
Genie Energy Ltd. (a)		6,278		64,098
IDACORP, Inc.		24,792		1,285,217
MGE Energy, Inc.		11,419		661,160
NorthWestern Corp.		18,730		811,384
NRG Yield, Inc., Class A		11,153		446,231
Otter Tail Corp.		17,995		526,714
Pattern Energy Group, Inc.		9,150		277,336
Pike Electric Corp. (a)		12,902		136,374
PNM Resources, Inc.		39,440		951,293
Portland General Electric Co.		37,391		1,129,208
UIL Holdings Corp.		27,960		1,083,450
Unitil Corp.		6,938		211,540
UNS Energy Corp.		20,509		1,227,464
				14,564,030
Utilities: Gas Distributors — 0.8%
Chesapeake Utilities Corp.		4,770		286,295
Delta Natural Gas Co., Inc.		3,287		73,563
The Laclede Group, Inc.		16,184		737,019
New Jersey Resources Corp.		20,666		955,596
Northwest Natural Gas Co.		13,320		570,362
Piedmont Natural Gas Co., Inc.		37,318		1,237,465
South Jersey Industries, Inc.		15,810		884,728
Southwest Gas Corp.		22,857		1,277,935
WGL Holdings, Inc.		25,598		1,025,456
				7,048,419
Utilities: Miscellaneous — 0.0%
Ormat Technologies, Inc.		8,771		238,659
Utilities: Telecommunications — 0.9%
8x8, Inc. (a)		43,316		440,091
Atlantic Tele-Network, Inc.		4,548		257,280
Boingo Wireless, Inc. (a)		8,983		57,581
Cbeyond, Inc. (a)		12,902		89,024
Cincinnati Bell, Inc. (a)		103,109		367,068
Cogent Communications Group, Inc.		23,354		943,735
Consolidated Communications Holdings, Inc.		19,907		390,775
Fairpoint Communications, Inc. (a)		9,987		112,953
General Communication, Inc., Class A (a)		15,661		174,620
Hawaiian Telcom Holdco, Inc. (a)(b)		5,146		151,138
HickoryTech Corp.		6,583		84,460
IDT Corp., Class B		7,746		138,421
inContact, Inc. (a)		26,457		206,629
Iridium Communications, Inc. (a)(b)		31,970		200,132
j2 Global, Inc.		22,718		1,136,127
Leap Wireless International, Inc. (a)		26,734		465,172
Lumos Networks Corp.		7,715		162,015
magicJack VocalTec Ltd. (a)(b)		9,001		107,292
Common Stocks	Shares		Value
Utilities: Telecommunications (concluded)
NII Holdings, Inc. (a)(b)		85,752		235,818
NTELOS Holdings Corp.		7,747		156,722
ORBCOMM, Inc. (a)		17,457		110,678
Premiere Global Services, Inc. (a)		23,854		276,468
Shenandoah Telecommunications Co.		11,890		305,216
Straight Path Communications, Inc., Class B (a)		3,754		30,745
Towerstream Corp. (a)		32,095		95,001
USA Mobility, Inc.		10,543		150,554
Vonage Holdings Corp. (a)		76,937		256,200
West Corp.		10,631		273,323
				7,375,238
Utilities: Water — 0.2%
American States Water Co.		19,093		548,542
Artesian Resources Corp., Class A		3,618		83,033
California Water Service Group		23,643		545,444
Connecticut Water Service, Inc.		5,419		192,429
Consolidated Water Co. Ltd.		7,173		101,139
Middlesex Water Co.		7,938		166,222
Pure Cycle Corp. (a)		8,135		51,494
SJW Corp.		7,704		229,502
York Water Co.		6,201		129,787
				2,047,592
Total Common Stocks — 95.6%				821,638,020
Investment Companies
BlackRock Kelso Capital Corp. (c)		37,065		345,817
Firsthand Technology Value Fund, Inc. (a)		4,400		101,948
Gladstone Capital Corp.		10,292		98,803
Hercules Technology Growth Capital, Inc.		30,536		500,791
PennantPark Investment Corp.		33,124		384,238
Prospect Capital Corp.		138,323		1,551,984
Total Investment Companies — 0.4%				2,983,581
Other Interests (e) — 0.0%	Beneficial Interest (000)
Gerber Scientific, Inc.	$	12,866		—
Warrants (f) — 0.0%	Shares
Oil: Crude Producers — 0.0%
Magnum Hunter Resources Corp., (Issued 9/12/13, 1 Share for 1 Warrant, Expires 4/15/16, Strike Price $8.50)		7,791		—
Total Long-Term Investments (Cost — $530,741,513) — 96.0%				824,621,601
Short-Term Securities
BlackRock Liquidity Funds, TempFund, Institutional Class, 0.05% (c)(g)		48,629,247		48,629,247
	Beneficial Interest (000)
BlackRock Liquidity Series, LLC, Money Market Series, 0.19% (c)(g)(h)	$	45,115		45,115,062
Total Short-Term Securities (Cost — $93,744,309) — 10.9%				93,744,309
Total Investments (Cost — $624,485,822*) — 106.9%				918,365,910
Liabilities in Excess of Other Assets — (6.9)%				(58,967,630	)
Net Assets — 100.0%			$	859,398,280

See Notes to Financial Statements.

50 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Schedule of Investments (continued) Master Small Cap Index Series

Notes to Schedule of investments

* As of December 31, 2013, gross unrealized appreciation and depreciation based on cost for federal income tax purposes were as follows:

Tax cost	$	642,535,415
Gross unrealized appreciation	$	310,595,629
Gross unrealized depreciation		(34,765,134	)
Net unrealized appreciation	$	275,830,495

(a) Non-income producing security.

(b) Security, or a portion of security, is on loan.

(c) Investments in issuers considered to be an affiliate of the Series during the year ended December 31, 2013, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

Affiliate	Shares/ Beneficial Interest Held at December 31, 2012		Shares/ Beneficial Interest Purchased			Shares/ Beneficial Interest Sold			Shares/ Beneficial Interest Held at December 31, 2013		Value at December 31, 2013		Income		Realized Gain (Loss)
BlackRock Kelso Capital Corp.		24,999		14,246			(2,180	)		37,065	$	345,817	$	33,643	$	(1,280	)
BlackRock Liquidity Funds, TempFund, Institutional Class		20,512,415		28,116,832	1		—			48,629,247	$	48,629,247	$	15,390		—
BlackRock Liquidity Series, LLC, Money Market Series	$	36,877,998	$	8,237,064	1		—		$	45,115,062	$	45,115,062	$	1,093,478		—
PennyMac Financial Services, Inc.		—		5,912	1		—			5,912	$	103,755		—		—
PennyMac Mortgage Investment Trust		27,689		899	1		—			28,588	$	656,381	$	65,181		—
1   Represents net shares/beneficial interest purchased.

(d) All or a portion of security has been pledged in connection with outstanding financial futures contracts.

(e) Other interests represent beneficial interests in liquidation trusts and other reorganization or private entities.

(f) Warrants entitle the Series to purchase a predetermined number of shares of common stock and are non-income producing. The purchase price and number of shares are subject to adjustment under certain conditions until the expiration date of the warrants, if any.

(g) Represents the current yield as of report date.

(h) Security was purchased with the cash collateral from loaned securities. The Series may withdraw up to 25% of its investment daily, although the manager of the BlackRock Liquidity Series, LLC, Money Market Series, in its sole discretion, may permit an investor to withdraw more than 25% on any one day.

Ÿ Financial futures contracts outstanding as of December 31, 2013 were as follows:

Contracts Purchased		Issue	Exchange	Expiration	Notional Value		Unrealized Appreciation
	291	Russell 2000 Mini Index	ICE Futures US Indicies	March 2014	$	33,796,740	$	1,511,477

Ÿ Fair Value Measurements — Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a disclosure hierarchy consisting of three broad levels for financial statement purposes as follows:

Ÿ Level 1 — unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Series has the ability to access

Ÿ Level 2 — other observable inputs (including, but not limited to, quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

Ÿ Level 3 — unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Series’ own assumptions used in determining the fair value of investments and derivative financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety.

Changes in valuation techniques may result in transfers into or out of an assigned level within the disclosure hierarchy. In accordance with the Series’ policy, transfers between different levels of the fair value disclosure hierarchy are deemed to have occurred as of the beginning of the reporting period. The categorization of a value determined for investments and derivative financial instruments is based on the pricing transparency of the investment and derivative financial instrument and is not necessarily an indication of the risks associated with investing in those securities. For information about the Series’ policy regarding valuation of investments and derivative financial instruments, please refer to Note 2 of the Notes to Financial Statements. The following tables summarize the Series’ investments and derivative financial instruments categorized in the disclosure hierarchy as of December 31, 2013:

	Level 1		Level 2		Level 3		Total
Assets:
Investments:
Long-Term Investments1
Common Stocks	$	821,612,551	$	25,469		—	$	821,638,020
Investment Companies		2,983,581		—		—		2,983,581
Short-Term Securities		48,629,247		45,115,062		—		93,744,309
Total	$	873,225,379	$	45,140,531		—	$	918,365,910
1   See above Schedule of Investments for values in each sector.

See Notes to Financial Statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 51

Schedule of Investments (concluded) Master Small Cap Index Series

	Level 1		Level 2		Level 3		Total
Derivative Financial Instruments1
Assets:
Equity contracts	$	1,511,477		—		—	$	1,511,477
1   Derivative financial instruments are financial futures contracts, which are valued at the unrealized appreciation/depreciation on the instrument.

The carrying amount for certain of the Series’ assets and/or liabilities approximates fair value for financial statement purposes. As of December 31, 2013, such assets and/or liabilities are categorized within the disclosure hierarchy as follows:

	Level 1		Level 2			Level 3		Total
Assets:
Cash	$	131,990		—			—	$	131,990
Cash pledged for financial futures contracts		898,000		—			—		898,000
Liabilities:
Collateral on securities loaned at value		—	$	(45,115,062	)		—		(45,115,062	)
Total	$	1,029,990	$	(45,115,062	)		—	$	(44,085,072	)

There were no transfers between levels during the year ended December 31, 2013.

See Notes to Financial Statements.

52 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Statements of Assets and Liabilities

December 31, 2013	Master International Index Series		Master Small Cap Index Series
Assets
Investments at value — unaffiliated1,2	$	986,548,467	$	823,515,648
Investments at value — affiliated3		1,116,398		94,850,262
Cash		—		131,990
Cash pledged for financial futures contracts		1,604,000		898,000
Foreign currency at value4		19,997,903		—
Dividends receivable — unaffiliated		3,244,451		956,305
Contributions receivable from investors		1,330,370		—
Investments sold receivable		1,133,292		—
Securities lending income receivable — affiliated		5,748		108,962
Variation margin receivable on financial futures contracts		—		142,620
Dividends receivable — affiliated		—		9,380
Unrealized appreciation on foreign currency exchange contracts		175		—
Other income receivable — affiliated		18,899		155,381
Other assets		14,412		—
Prepaid expenses		8,140		5,755
Total assets		1,015,022,255		920,774,303
Liabilities
Collateral on securities loaned at value		528,856		45,115,062
Investments purchased payable		485,619		14,938,787
Bank overdraft		1,018,673		—
Investment advisory fees payable		8,128		4,977
Directors’ fees payable		7,866		5,064
Variation margin payable on financial futures contracts		4,652		—
Other affiliates payable		2,162		1,766
Withdrawals payable to investors		—		1,175,211
Other payable		—		6,586
Other accrued expenses payable		152,290		128,570
Total liabilities		2,208,246		61,376,023
Net Assets	$	1,012,814,009	$	859,398,280
Net Assets Consist of
Investors’ capital	$	709,673,655	$	564,006,707
Net unrealized appreciation/depreciation		303,140,354		295,391,573
Net Assets	$	1,012,814,009	$	859,398,280
1 Investments at cost — unaffiliated	$	684,439,924	$	529,714,500
2 Securities loaned at value	$	503,223	$	43,907,066
3 Investments at cost — affiliated	$	1,116,398	$	94,771,322
4 Foreign currency at cost	$	19,997,162		—

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	53

Statements of Operations

Year Ended December 31, 2013	Master International Index Series			Master Small Cap Index Series
Investment Income
Dividends — unaffiliated	$	28,689,334		$	9,350,038
Foreign taxes withheld		(2,404,483	)		(10,841	)
Securities lending — affiliated — net		11,250			1,093,478
Other income — affiliated		315,399			155,381
Dividends — affiliated		2,127			114,214
Total income		26,613,627			10,702,270
Expenses
Investment advisory		87,757			70,287
Accounting services		134,254			131,710
Custodian		151,118			113,135
Professional		71,314			68,008
Directors		30,215			24,718
Printing		21,308			23,974
Miscellaneous		87,063			38,472
Total expenses		583,029			470,304
Less fees waived and/or reimbursed by Manager		(1,880	)		(30,330	)
Total expenses after fees waived and/or reimbursed		581,149			439,974
Net investment income		26,032,478			10,262,296
Realized and Unrealized Gain (Loss)
Net realized gain (loss) from:
Investments — unaffiliated		(10,140,808	)		30,264,603
Investments — affiliated		—			1,280
Financial futures contracts		2,104,626			7,529,321
Foreign currency transactions		(826,614	)		(132	)
		(8,862,796	)		37,795,072
Net change in unrealized appreciation/depreciation on:
Investments		154,717,985			180,052,993
Financial futures contracts		639,613			1,093,430
Foreign currency translations		84,313			14
		155,441,911			181,146,437
Total realized and unrealized gain		146,579,115			218,941,509
Net Increase in Net Assets Resulting from Operations	$	172,611,593		$	229,203,805

See Notes to Financial Statements.
54	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013

Statements of Changes in Net Assets

	Master International Index Series						Master Small Cap Index Series
	Year Ended December 31,						Year Ended December 31,
Increase (Decrease) in Net Assets:	2013			2012			2013			2012
Operations
Net investment income	$	26,032,478		$	22,971,640		$	10,262,296		$	10,865,791
Net realized gain (loss)		(8,862,796	)		(61,304,658	)		37,795,072			7,464,862
Net change in unrealized appreciation/depreciation		155,441,911			182,573,315			181,146,437			65,437,618
Net increase in net assets resulting from operations		172,611,593			144,240,297			229,203,805			83,768,271
Capital Transactions
Proceeds from contributions		274,848,943			279,030,661			223,976,607			389,096,894
Value of withdrawals		(192,790,156	)		(520,908,247	)		(175,553,424	)		(420,147,450	)
Net increase (decrease) in net assets derived from capital transactions		82,058,787			(241,877,586	)		48,423,183			(31,050,556	)
Net Assets
Total increase (decrease) in net assets		254,670,380			(97,637,289	)		277,626,988			52,717,715
Beginning of year		758,143,629			855,780,918			581,771,292			529,053,577
End of year	$	1,012,814,009		$	758,143,629		$	859,398,280		$	581,771,292

See Notes to Financial Statements.
	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013	55

Financial Highlights Master International Index Series

	Year Ended December 31,
	2013		2012		2011		2010		2009
Total Investment Return
Total investment return		21.94%		19.01%		(12.34)%		7.66%		28.99%
Ratios to Average Net Assets
Total expenses		0.07%		0.06%		0.08%		0.11%		0.09%
Total expenses after fees waived and paid indirectly		0.07%		0.06%		0.08%		0.10%		0.09%
Net investment income		2.97%		3.36%		3.38%		2.73%		2.98%
Supplemental Data
Net assets, end of year (000)	$	1,012,814	$	758,144	$	855,781	$	922,700	$	749,280
Portfolio turnover		8%		21%		6%		8%		30%

Master Small Cap Index Series

	Year Ended December 31,
	2013		2012		2011			2010		2009
Total Investment Return
Total investment return		39.11%		16.52%		(4.30	)%		27.19%		27.37%
Ratios to Average Net Assets
Total expenses		0.07%		0.14%		0.09%			0.12%		0.09%
Total expenses after fees waived and/or reimbursed		0.06%		0.08%		0.07%			0.08%		0.07%
Net investment income		1.46%		2.13%		1.46%			1.27%		1.27%
Supplemental Data
Net assets, end of year (000)	$	859,398	$	581,771	$	529,054		$	338,172	$	229,637
Portfolio turnover		22%		68%		31%			42%		43%

See Notes to Financial Statements.
56	BLACKROCK INDEX FUNDS, INC.	DECEMBER 31, 2013

Notes to Financial Statements Quantitative Master Series LLC

1. Organization:

Master International Index Series (“Master International Index”) and Master Small Cap Index Series (“Master Small Cap Index”) (collectively, the “Series”, or individually, a “Series”) are a series of Quantitative Master Series LLC (the “Master LLC”), which is registered as an open-end management investment company under the Investment Company Act of 1940, as amended (the “1940 Act”), and is organized as a Delaware limited liability company. Each Series is classified as diversified. The Master LLC’s Limited Liability Company Agreement permits the Board of Directors of the Master LLC (the “Board”) to issue non-transferable interests in the Master LLC, subject to certain limitations.

2. Significant Accounting Policies:

The Series’ financial statements are prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”), which may require management to make estimates and assumptions that affect the reported amounts of assets and liabilities in the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Series:

Valuation: US GAAP defines fair value as the price the Series would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. The Series determine the fair values of their financial instruments at market value using independent dealers or pricing services under policies approved by the Board. The BlackRock Global Valuation Methodologies Committee (the “Global Valuation Committee”) is the committee formed by management to develop global pricing policies and procedures and to provide oversight of the pricing function for the Series for all financial instruments.

Equity investments traded on a recognized securities exchange or the NASDAQ Global Market System (“NASDAQ”) are valued at the last reported sale price that day or the NASDAQ official closing price, if applicable. For equity investments traded on more than one exchange, the last reported sale price on the exchange where the stock is primarily traded is used. Equity investments traded on a recognized exchange for which there were no sales on that day are valued at the last available bid (long positions) or ask (short positions) price. Financial futures contracts traded on exchanges are valued at their last sale price. Investments in open-end registered investment companies are valued at NAV each business day.

The Series values its investments in BlackRock Liquidity Series, LLC, Money Market Series (the “Money Market Series”) at fair value, which is ordinarily based upon its pro rata ownership in the underlying fund’s net assets. The Money Market Series seeks current income consistent with maintaining liquidity and preserving capital. Although the Money Market Series is not registered under the 1940 Act, its investments will follow the parameters of investments by a money market fund that is subject to Rule 2a-7 under the 1940 Act. The Series may withdraw up to 25% of its investment daily, although the manager of the Money Market Series, in its sole discretion, may permit an investor to withdraw more than 25% on any one day.

Securities and other assets and liabilities denominated in foreign currencies are translated into US dollars using exchange rates determined as of the close of business on the New York Stock Exchange (“NYSE”). Foreign currency exchange contracts are valued at the mean between the bid and ask prices and are determined as of the close of business on the NYSE. Interpolated values are derived when the settlement date of the contract is an interim date for which quotations are not available.

In the event that application of these methods of valuation results in a price for an investment that is deemed not to be representative of the market value of such investment, or if a price is not available, the investment will be valued by the Global Valuation Committee, or its delegate, in accordance with a policy approved by the Board as reflecting fair value (“Fair Value Assets”). When determining the price for Fair Value Assets, the Global Valuation Committee, or its delegate, seeks to determine the price that the Series might reasonably expect to receive from the current sale of that asset in an arm’s-length transaction. Fair value determinations shall be based upon all available factors that the Global Valuation Committee or its delegate, deem relevant consistent with the principles of fair value measurement which include the market approach, income approach and/or in the case of recent investments, the cost approach, as appropriate. The market approach generally consists of using comparable market transactions. The income approach generally is used to discount future cash flows to present value and is adjusted for liquidity as appropriate. These factors include but are not limited to: (i) attributes specific to the investment or asset; (ii) the principal market for the investment or asset; (iii) the customary participants in the principal market for the investment or asset; (iv) data assumptions by market participants for the investment or asset, if reasonably available; (v) quoted prices for similar investments or assets in active markets; and (vi) other factors, such as future cash flows, interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks, recovery rates, liquidation amounts and/or default rates. Due to the inherent uncertainty of valuations of such investments, the fair values may differ from the values that would have been used had an active market existed. The Global Valuation Committee, or its delegate, employs various methods for calibrating valuation approaches for investments where an active market does not exist, including regular due diligence of the Series’ pricing vendors, a regular review of key inputs and assumptions, transactional back-testing or disposition analysis to compare unrealized gains and losses to realized gains and losses, reviews of missing or stale prices and large movements in market values and reviews of any market related activity. The pricing of all Fair Value Assets is subsequently reported to the Board or a committee thereof on a quarterly basis.

Generally, trading in foreign instruments is substantially completed each day at various times prior to the close of business on the NYSE. Occasionally, events affecting the values of such instruments may occur between the foreign market close and the close of business on the NYSE that may not be reflected in the computation of the Series’ net assets. If events (for example, a company announcement, market volatility or a natural disaster) occur during such periods that are expected to affect the value of such instruments materially, those instruments may be Fair Value Assets and valued at their fair value, as determined in good faith by the Global Valuation Committee, or its delegate, using a pricing service and/or policies

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 57

Notes to Financial Statements (continued) Quantitative Master Series LLC

approved by the Board. Each business day, the Series use a pricing service to assist with the valuation of certain foreign exchange-traded equity securities and foreign exchange-traded and over-the-counter (“OTC”) options (the “Systematic Fair Value Price”). Using current market factors, the Systematic Fair Value Price is designed to value such foreign securities and foreign options at fair value as of the close of business on the NYSE, which follows the close of the local markets.

Foreign Currency: The Series’ books and records are maintained in US dollars. Purchases and sales of investment securities are recorded at the rates of exchange prevailing on the respective date of such transactions. Generally, when the US dollar rises in value against a foreign currency, the Series’ investments denominated in that currency will lose value because that currency is worth fewer US dollars; the opposite effect occurs if the US dollar falls in relative value.

The Series do not isolate the portion of the results of operations arising as a result of changes in the foreign exchange rates from the changes in the market prices of investments held or sold for financial reporting purposes. Accordingly, the effects of changes in foreign currency exchange rates on investments are not segregated in the Statements of Operations from the effects of changes in market prices of those investments but are included as a component of net realized and unrealized gain (loss) from investments. The Series report realized currency gains (losses) on foreign currency related transactions as components of net realized gain (loss) for financial reporting purposes, whereas such components may be treated as ordinary income for federal income tax purposes.

Segregation and Collateralization: In cases where a Series enters into certain investments (e.g., financial futures contracts and foreign currency exchange contracts) that would be “senior securities” for 1940 Act purposes, the Series may segregate or designate on its books and records cash or liquid securities having a market value at least equal to the amount of the Series’ future obligations under such investments. Doing so allows the investment to be excluded from treatment as a “senior security”. Furthermore, if required by an exchange or counterparty agreement, the Series may be required to deliver/deposit cash and/or securities to/with an exchange, or broker-dealer or custodian as collateral for certain investments or obligations.

Investment Transactions and Investment Income: For financial reporting purposes, investment transactions are recorded on the dates the transactions are entered into (the trade dates). Realized gains and losses on investment transactions are determined on the identified cost basis. Dividend income is recorded on the ex-dividend dates. Dividends from foreign securities where the ex-dividend date may have passed are subsequently recorded when the Series is informed of the ex-dividend date. Under the applicable foreign tax laws, a withholding tax at various rates may be imposed on capital gains, dividends and interest. Upon notification from issuers, some of the dividend income received from a real estate investment trust may be redesignated as a reduction of cost of the related investment and/or realized gain.

Income Taxes: The Series are classified as partnerships for federal income tax purposes. As such, each investor in the Series is treated as the owner of its proportionate share of net assets, income, expenses and realized and unrealized gains and losses of the Series. Therefore, no federal income tax provision is required. It is intended that the Series’ assets will be managed so an investor in the Series can satisfy the requirements of Subchapter M of the Internal Revenue Code of 1986, as amended.

The Series file US federal and various state and local tax returns. No income tax returns are currently under examination. The statute of limitations on the Series’ US federal tax returns remains open for each of the four years ended December 31, 2013. The statutes of limitations on the Series’ state and local tax returns may remain open for an additional year depending upon the jurisdiction.

Management has analyzed tax laws and regulations and their application to the Series’ facts and circumstances and does not believe there are any uncertain tax positions that require recognition of a tax liability.

Other: Expenses directly related to the Series are charged to the Series. Other operating expenses shared by several funds are pro rated among those funds on the basis of relative net assets or other appropriate methods.

The Series have an arrangement with the custodian whereby fees may be reduced by credits earned on uninvested cash balances, which, if applicable, are shown as fees paid indirectly in the Statements of Operations. The custodian imposes fees on overdrawn cash balances, which can be offset by accumulated credits earned or may result in additional custody charges.

3. Securities and Other Investments:

Securities Lending: The Series may lend securities to approved borrowers, such as banks, brokers and other financial institutions. The borrower pledges cash, securities issued or guaranteed by the US government or irrevocable letters of credit issued by a bank as collateral. The initial collateral received by the Series should have a value of at least 102% of the current value of the loaned securities for securities traded on US exchanges and a value of at least 105% for all other securities. The collateral is maintained thereafter in an amount equal to at least 100% of the current market value of the loaned securities. The market value of the loaned securities is determined at the close of business of the Series and any additional required collateral is delivered to the Series on the next business day. Securities lending income, as disclosed in the Statements of Operations, represents the income earned from the investment of the cash collateral, net of rebates paid to, or fees paid by, borrowers and less the fees paid to the securities lending agent. During the term of the loan, the Series earns dividend or interest income on the securities loaned but does not receive interest income on the securities received as collateral. Loans of securities are terminable at any time and the borrower, after notice, is required to return borrowed securities within the standard time period for settlement of securities transactions.

The market value of securities on loan and the value of the related collateral are shown separately in the Statements of Assets and Liabilities as a component of investments at value, and collateral on securities loaned at value, respectively. The cash collateral invested by the securities lending agent, BlackRock Investment Management, LLC (“BIM”), if any, is disclosed in the Schedules of Investments.

58 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Notes to Financial Statements (continued) Quantitative Master Series LLC

Securities lending transactions are entered into by the Series under Master Securities Lending Agreements (“MSLA”) which provide the right, in the event of default (including bankruptcy or insolvency) for the non-defaulting party to liquidate the collateral and calculate a net exposure to the defaulting party or request additional collateral. In the event that a borrower defaults, the Series, as lender, would offset the market value of the collateral received against the market value of the securities loaned. The value of the collateral is typically greater than that of the market value of the securities loaned, leaving the lender with a net amount payable to the defaulting party. However, bankruptcy or insolvency laws of a particular jurisdiction may impose restrictions on or prohibitions against such a right of offset in the event of a MSLA counterparty’s bankruptcy or insolvency. Under the MSLA, the borrower can resell or re-pledge the loaned securities, and the Series can reinvest cash collateral, or, upon an event of default, resell or re-pledge the collateral.

The following tables are a summary of the Series’ securities lending agreements by counterparty which are subject to offset under a MSLA as of December 31, 2013:

Master International Index
Counterparty	Securities Loaned at Value		Cash Collateral Received1			Net Amount
Deutsche Bank Securities, Inc.	$	377,580	$	(377,580	)		—
Morgan Stanley		125,643		(125,643	)		—
Total	$	503,223	$	(503,223	)		—

¹ Collateral with a value of $528,856 has been received in connection with securities lending agreements. Excess of collateral received from the individual counterparty is not shown for financial reporting purposes.

Master Small Cap Index
Counterparty	Securities Loaned at Value		Cash Collateral Received2			Net Amount
Barclays Capital, Inc.	$	925,328	$	(925,328	)		—
BNP Paribas S.A.		112,110		(112,110	)		—
Citigroup Global Markets, Inc.		230,064		(230,064	)		—
Credit Suisse Securities (USA) LLC		2,484,874		(2,484,874	)		—
Deutsche Bank Securities, Inc.		2,405,655		(2,405,655	)		—
Goldman Sachs & Co.		8,068,035		(8,068,035	)		—
JP Morgan Securities LLC		3,817,787		(3,817,787	)		—
Merrill Lynch, Pierce, Fenner & Smith Inc.		5,094,247		(5,094,247	)		—
Morgan Stanley		19,616,198		(19,616,198	)		—
Nomura Securites International, Inc.		54,918		(54,918	)		—
UBS Securities LLC		1,097,850		(1,097,850	)		—
Total	$	43,907,066	$	(43,907,066	)		—

²  Collateral with a value of $45,115,062 has been received in connection with securities lending agreements. Excess of collateral received from the individual counterparty is not shown for financial reporting purposes.

The risks of securities lending also include the risk that the borrower may not provide additional collateral when required or may not return the securities when due. To mitigate this risk, the Series benefit from a borrower default indemnity provided by BlackRock, Inc. (“BlackRock”). BlackRock’s indemnity allows for full replacement of the securities lent. The Series also could suffer a loss if the value of an investment purchased with cash collateral falls below the market value of loaned securities or if the value of an investment purchased with cash collateral falls below the value of the original cash collateral received. During the year ended December 31, 2013, any securities on loan were collateralized by cash.

4. Derivative Financial Instruments:

The Series engage in various portfolio investment strategies using derivative contracts both to increase the returns of the Series and/or to economically hedge their exposure to certain risks such as equity risk or foreign currency exchange rate risk. These contracts may be transacted on an exchange or OTC.

Financial Futures Contracts: The Series purchase and/or sell financial futures contracts and options on financial futures contracts to gain exposure to, or economically hedge against, changes in the value of equity securities (equity risk) or foreign currencies (foreign currency exchange rate risk). Financial futures contracts are agreements between the Series and a counterparty to buy or sell a specific quantity of an underlying instrument at a specified price and at a specified date. Depending on the terms of the particular contract, financial futures contracts are settled either through physical delivery of the underlying instrument on the settlement date or by payment of a cash settlement amount on the settlement date.

Upon entering into a financial futures contract, the Series are required to deposit initial margin with the broker in the form of cash or securities in an amount that varies depending on a contract’s size and risk profile. The initial margin deposit must then be maintained at an established level over the life of the contract. Securities deposited as initial margin are designated on the Schedules of Investments and cash deposited, if any, is recorded on the Statements of Assets and Liabilities as cash pledged for financial futures contracts. Pursuant to the contract, the Series agree 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. Variation margin is recorded by the Series as unrealized appreciation or depreciation, and if applicable, as a receivable or payable for variation margin in the Statements of Assets and Liabilities.

When the contract is closed, the Series 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 at the time it was closed. The use of financial futures contracts involves the risk of an imperfect correlation in the movements in the price of financial futures contracts, interest or foreign currency exchange rates and the underlying assets.

Foreign Currency Exchange Contracts: The Series enter into foreign currency exchange contracts as an economic hedge against either specific transactions or portfolio instruments or to obtain exposure to, or hedge exposure away from, foreign currencies (foreign currency exchange rate risk). A foreign currency exchange contract is an agreement between two parties to buy and sell a currency at a set exchange rate on a future date. Foreign currency exchange contracts, when used by the Series, help to manage the overall exposure to the currencies in which some of the investments held by the Series are denominated. The contract is marked-to-market daily and the change in market value is recorded by the Series as an unrealized gain or loss. When the contract is closed, the Series record a realized gain or loss equal to the difference between the value at the time it was opened and the value at the time it was closed. The use of foreign currency exchange contracts involves the risk that the value of a foreign currency exchange contract changes unfavorably due to movements in the value of the referenced foreign currencies.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 59

Notes to Financial Statements (continued) Quantitative Master Series LLC

The following is a summary of the Series’ derivative financial instruments categorized by risk exposure:

Fair Values of Derivative Financial Instruments as of December 31, 2013
	Derivative Assets
	Statements of Assets and Liabilities Location	Value
		Master International Index		Master Small Cap Index
Equity contracts	Net unrealized appreciation/ depreciation1	$	758,715	$	1,511,477
Foreign currency exchange contracts	Unrealized appreciation on foreign currency exchange contracts		175		—
Total		$	758,890	$	1,511,477

¹  Includes cumulative appreciation/depreciation on financial futures contracts as reported in the Schedules of Investments. Only current day’s variation margin is reported within the Statements of Assets and Liabilities.

The Effect of Derivative Financial Instruments in the Statements of Operations Year Ended December 31, 2013
	Net Realized Gain (Loss) From
	Master International Index			Master Small Cap Index
Equity contracts:
Financial futures contracts	$	2,104,626		$	7,529,321
Foreign currency exchange contracts:
Foreign currency transactions		(143,049	)		(2	)
Total	$	1,961,577		$	7,529,319
	Net Change in Unrealized Appreciation/Depreciation on
	Master International Index			Master Small Cap Index
Equity contracts:
Financial futures contracts	$	639,613		$	1,093,430
Foreign currency exchange contracts:
Foreign currency translations		(610	)		—
Total	$	639,003		$	1,093,430

For the year ended December 31, 2013, the average quarterly balances of outstanding derivative financial instruments were as follows:

	Master International Index		Master Small Cap Index
Financial futures contracts:
Average number of contracts purchased		285		202
Average notional value of contracts purchased	$	18,173,784	$	21,314,603
Foreign currency exchange contracts:
Average number of contracts — US dollars purchased		1		—
Average number of contracts — US dollars sold		1		—
Average US dollar amounts purchased	$	105,175		—
Average US dollar amounts sold	$	525,000		—

Counterparty Credit Risk: A derivative contract may suffer a mark to market loss if the value of the contract decreases due to an unfavorable change in the market rates or values of the underlying instrument. Losses can also occur if the counterparty does not perform under the contract.

The Series’ risk of loss from counterparty credit risk on OTC derivatives is generally limited to the aggregate unrealized gain netted against any collateral held by such Series. For OTC options purchased, the Series bear the risk of loss of the amount of the premiums paid plus the positive change in market values net of any collateral held by such Series should the counterparty fail to perform under the contracts. Options written by the Series do not typically give rise to counterparty credit risk, as options written generally obligate the Series, and not the counterparty, to perform.

With exchange-traded futures, there is less counterparty credit risk to the Series since the exchange or clearinghouse, as counterparty to such instruments, guarantees against a possible default. The clearinghouse stands between the buyer and the seller of the contract; therefore, credit risk is limited to failure of the clearinghouse. Credit risk still exists in exchange traded futures with respect to initial and variation margin that is held in a clearing broker’s customer accounts. While clearing brokers are required to segregate customer margin from their own assets, in the event that a clearing broker becomes insolvent or goes into bankruptcy and at that time there is a shortfall in the aggregate amount of margin held by the clearing broker for all its clients, typically the shortfall would be allocated on a pro rata basis across all the clearing broker’s customers, potentially resulting in losses to the Series.

In order to better define its contractual rights and to secure rights that will help the Series mitigate its counterparty risk, the Series may enter into an International Swaps and Derivatives Association, Inc. Master Agreement (“ISDA Master Agreement”) or similar agreement with its derivative contract counterparties. An ISDA Master Agreement is a bilateral agreement between the Series and a counterparty that governs certain OTC derivatives and typically contains, among other things, collateral posting terms and netting provisions in the event of a default and/or termination event. Under an ISDA Master Agreement, the Series may, under certain circumstances, offset with the counterparty certain derivative financial instruments’ payables and/or receivables with collateral held and/or posted and create one single net payment. The provisions of the ISDA Master Agreement typically permit a single net payment in the event of default including the bankruptcy or insolvency of the counterparty. However, that bankruptcy or insolvency laws of a particular jurisdiction may impose restrictions on or prohibitions against the right of offset in bankruptcy, insolvency or other events. In addition, certain ISDA Master Agreements allow counterparties to OTC derivatives to terminate derivative contracts prior to maturity in the event the Series’ net assets decline by a stated percentage or the Series fails to meet the terms of their ISDA Master Agreements, which would cause the Series to accelerate payment of any net liability owed to the counterparty.

Collateral Requirements: For derivatives traded under an ISDA Master Agreement, the collateral requirements are typically calculated by netting the mark to market amount for each transaction under such agreement and comparing that amount to the value of any collateral currently pledged by the Series and the counterparty.

Cash collateral that has been pledged to cover obligations of the Series and cash collateral received from the counterparty, if any, is reported separately on the Statements of Assets and Liabilities as cash pledged as

60 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Notes to Financial Statements (continued) Quantitative Master Series LLC

collateral and cash received as collateral, respectively. Non-cash collateral pledged by the Series, if any, is noted in the Schedules of Investments. Generally, the amount of collateral due from or to a party has to exceed a minimum transfer amount threshold (e.g. $500,000) before a transfer is required, which is determined at the close of business of the Series and additional required collateral is delivered to/pledged by the Series on the next business day. Typically, the Series and counterparties are permitted to sell, re-pledge or use the collateral they receive. To the extent amounts due to the Series from its counterparties are not fully collateralized, contractually or otherwise, the Series bear the risk of loss from counterparty non-performance. The Series attempts to mitigate counterparty risk by entering into agreements only with counterparties that it believes have the financial resources to honor their obligations and by monitoring the financial stability of those counterparties.

For financial reporting purposes, the Series do not offset derivative assets and derivative liabilities that are subject to netting arrangements in the Statements of Assets and Liabilities.

At December 31, 2013, the Series’ derivative assets and liabilities (by type) are as follows:

	Master International Index					Master Small Cap Index
	Assets		Liabilities			Assets			Liabilities
Derivative Financial Instruments:
Financial futures contracts		—	$	4,652		$	142,620			—
Foreign currency exchange contracts	$	175		—			—			—
Total derivative assets and liabilities in the Statements of Assets and Liabilities		175		4,652			142,620			—
Derivatives not subject to a master netting agreement or similar agreement (“MNA”)		—		(4,652	)		(142,620	)		—
Total assets and liabilities subject to a MNA	$	175		—			—			—

The following table presents the Series’ derivative assets by counterparty net of amounts available for offset under a MNA and net of the related collateral received by the Series as of December 31, 2013:

Master International Index
Counterparty	Derivative Assets Subject to a MNA by Counterparty		Derivatives Available for Offset		Non-Cash Collateral Received		Cash Collateral Received		Net Amount of Derivative Assets1
Deutsche Bank Securities, Inc.	$	175		—		—		—	$	175

¹  Net amount represents the net amount receivable from the counterparty in the event of default.

5. Investment Advisory Agreement and Other Transactions with Affiliates:

The PNC Financial Services Group, Inc. is the largest stockholder and an affiliate, for 1940 Act purposes, of BlackRock.

The Master LLC, on behalf of the Series, entered into an Investment Advisory Agreement with BlackRock Advisors, LLC (the “Manager”), the Series’ investment advisor, an indirect, wholly owned subsidiary of BlackRock, to provide investment advisory and administration services. The Manager is responsible for the management of the Series’ portfolios and provides the necessary personnel, facilities, equipment and certain other services necessary to the operations of the Series. For such services, the Series pay the Manager a monthly fee at an annual rate of 0.01% of the Series’ average daily net assets.

The Manager contractually agreed to waive and/or reimburse fees or expenses in order to limit expenses, excluding interest expense, dividend expense, acquired fund fees and expenses and certain other fund expenses, which constitute extraordinary expenses not incurred in the ordinary course of the Series’ business. The expense limitation as a percentage of average daily net assets is 0.12% for Master International Index and 0.08% for Master Small Cap Index.

The Manager has agreed not to reduce or discontinue this contractual waiver or reimbursement prior to May 1, 2014 unless approved by the Board, including a majority of the Independent Directors.

The Manager voluntarily agreed to waive its investment advisory fees by the amount of investment advisory fees the Series pays to the Manager indirectly through its investment in affiliated money market funds. However, the Manager does not waive its investment advisory fees by the amount of investment advisory fees paid in connection with the Series’ investment in other affiliated investment companies, if any. These amounts are included in fees waived by Manager in the Statements of Operations. For the year ended December 31, 2013, the amounts waived for Master International Index and Master Small Cap Index, were $1,880 and $30,330, respectively.

The Manager entered into a sub-advisory agreement with BIM, an affiliate of the Manager. The Manager pays BIM, for services it provides, a monthly fee that is a percentage of the investment advisory fees paid by the Series to the Manager.

For the year ended December 31, 2013, Master International Index and Master Small Cap Index, reimbursed the Manager, $6,119 and $5,021, respectively, for certain accounting services, which are included in accounting services in the Statements of Operations.

The Master LLC, on behalf of the Series, received an exemptive order from the SEC permitting it, among other things, to pay an affiliated securities lending agent a fee based on a share of the income derived from the securities lending activities and has retained BIM as the securities lending agent. BIM may, on behalf of the Series, invest cash collateral received by

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 61

Notes to Financial Statements (continued) Quantitative Master Series LLC

the Series for such loans in a private investment company managed by the Manager or in registered money market funds advised by the Manager or its affiliates. The market value of securities on loan and the value of the related collateral, if applicable, is shown in the Statements of Assets and Liabilities as securities loaned at value and collateral on securities loaned at value, respectively. The cash collateral invested by BIM, if any, is disclosed in the Schedules of Investments. Securities lending income is equal to the total of income earned from the reinvestment of cash collateral, net of rebates paid to, or fees paid by, borrowers of securities. The Series retains 65% of securities lending income and pays a fee to BIM equal to 35% of such income. The Series benefit from a borrower default indemnity provided by BlackRock. As securities lending agent, BIM bears all operational costs directly related to securities lending as well as the cost of borrower default indemnification. BIM does not receive any fees for managing the cash collateral. The share of income earned by the Series is shown as securities lending — affiliated — net in the Statements of Operations. For the year ended December 31, 2013, BIM received $6,062 and $588,039 in securities lending agent fees related to securities lending activities for Master International Index and Master Small Cap Index, respectively.

Master International Index and Master Small Cap Index recorded a payment from an affiliate to compensate for foregone securities lending revenue, which is shown as Other income — affiliated in the Statements of Operations.

Certain officers and/or directors of the Master LLC are officers and/or directors of BlackRock or its affiliates.

The Series may purchase securities from, or sell securities to, an affiliated fund provided the affiliation is solely due to having a common investment adviser, common officers, or common directors. For the year ended December 31, 2013, the purchase and sale transactions with an affiliated fund in compliance with Rule 17a-7 under the 1940 Act were as follows:

	Purchases		Sales
Master International Index		—		—
Master Small Cap Index	$	20,873,303	$	40,607,415

6. Purchases and Sales:

Purchases and sales of investments, excluding short-term securities, for the year ended December 31, 2013 were as follows:

	Purchases		Sales
Master International Index	$	179,349,421	$	71,433,871
Master Small Cap Index	$	209,028,210	$	152,670,827

7. Bank Borrowings:

The Series, along with certain other funds managed by the Manager and its affiliates (“Participating Funds”), is a party to a 364-day, $800 million credit agreement with a group of lenders, under which the Series may borrow to fund shareholder redemptions. The agreement expires in April 2014. Excluding commitments designated for a certain individual fund, other Participating Funds, including the Series, can borrow up to an aggregate commitment amount of $500 million, subject to asset coverage and other limitations as specified in the agreement. The credit agreement has the following terms: a fee of 0.065% per annum on unused commitment amounts and interest at a rate equal to the higher of (a) the one-month LIBOR plus 0.80% per annum or (b) the Fed Funds rate plus 0.80% per annum on amounts borrowed. Participating Funds paid administration and arrangement fees, which, along with commitment fees, were allocated among such funds based upon portions of the aggregate commitment available to them and relative net assets of Participating Funds. The Series did not borrow under the credit agreement during the year ended December 31, 2013.

8. Concentration, Market and Credit Risk:

In the normal course of business, the Series invest in securities and enter into transactions where risks exist due to fluctuations in the market (market risk) or failure of the issuer of a security to meet all its obligations (issuer credit risk). The value of securities held by the Series may decline in response to certain events, including those directly involving the issuers whose securities are owned by the Series; conditions affecting the general economy; overall market changes; local, regional or global political, social or economic instability; and currency and interest rate and price fluctuations. Similar to issuer credit risk, the Series may be exposed to counterparty credit risk, or the risk that an entity with which the Series have unsettled or open transactions may fail to or be unable to perform on its commitments. The Series manage counterparty credit risk by entering into transactions only with counterparties that it believes have the financial resources to honor their obligations and by monitoring the financial stability of those counterparties. Financial assets, which potentially expose the Series to market, issuer and counterparty credit risks, consist principally of financial instruments and receivables due from counterparties. The extent of the Series’ exposure to market, issuer and counterparty credit risks with respect to these financial assets is generally approximated by their value recorded in the Statements of Assets and Liabilities, less any collateral held by the Series.

Master International Index invests a substantial amount of its assets in issuers located in a single country or a limited number of countries. When the Series concentrates its investments in this manner, it assumes the risk that economic, political and social conditions in those countries may have a significant impact on its investment performance. Foreign issuers may not be subject to the same uniform accounting, auditing and financial reporting standards and practices as used in the United States. Foreign securities markets may also be less liquid, more volatile, and less subject to governmental supervision not typically associated with investing in US securities. Please see the Schedule of Investments for concentrations in specific countries.

Master International Index invests a significant portion of its assets in securities of issuers located in Europe or with significant exposure to European issuers or countries. The European financial markets have recently experienced volatility and adverse trends due to concerns about economic downturns in, or rising government debt levels of several European countries. These events may spread to other countries in Europe and may affect the value and liquidity of certain of Master International Index’s investments.

62 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Notes to Financial Statements (concluded) Quantitative Master Series LLC

As of December 31, 2013, Master Small Cap Index invested a significant portion of its assets in securities in the financials sector. Changes in economic conditions affecting the financials sector would have a greater impact on Master Small Cap Index and could affect the value, income and/or liquidity of positions in such securities.

As of December 31, 2013, the Series had the following industry classifications:

Master International Index
Industry	Percent of Long-Term Investments
Commercial Banks		13	%
Pharmaceuticals		8	%
Oil, Gas & Consumable Fuels		6	%
Insurance		5	%
Other1		68	%

Master Small Cap Index
Industry	Percent of Long-Term Investments
Real Estate Investment Trusts		7	%
Banks: Diversified		7	%
Computer Services Software & Systems		6	%
Other1		80	%

¹ All other industries held were less than 5% of long-term investments.

9. Subsequent Events:

Management has evaluated the impact of all subsequent events on the Series through the date the financial statements were issued and has determined that there were no subsequent events requiring adjustment or additional disclosure in the financial statements.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 63

Report of Independent Registered Public Accounting Firm Quantitative Master Series LLC

To the Investors of Master International Index Series and Master Small Cap Index Series and Board of Directors of Quantitative Master Series LLC:

We have audited the accompanying statements of assets and liabilities, including the schedules of investments, of Master International Index Series and Master Small Cap Index Series, each one of the series constituting Quantitative Master Series LLC, (the “Series”) as of December 31, 2013, 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 Series’ 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 audits to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Series is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included 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 on the effectiveness of the Series’ 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 significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2013, 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 Master International Index Series and Master Small Cap Index Series, of Quantitative Master Series LLC, as of December 31, 2013, 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 18, 2014

64 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Officers and Directors

Name, Address and Year of Birth	Position(s) Held with Corporation/ Master LLC	Length of Time Served as a Director2	Principal Occupation(s) During Past Five Years	Number of BlackRock- Advised Registered Investment Companies (“RICs”) Consisting of Investment Portfolios (“Portfolios”) Overseen	Public Directorships
Independent Directors1
Ronald W. Forbes 55 East 52nd Street New York, NY 10055 1940	Co-Chairman of the Board and Director	Since 2007	Professor Emeritus of Finance, School of Business, State University of New York at Albany since 2000.	33 RICs consisting of 107 Portfolios	None
Rodney D. Johnson 55 East 52nd Street New York, NY 10055 1941	Co-Chairman of the Board and Director	Since 2007	President, Fairmount Capital Advisors, Inc. from 1987 to 2013; Member of the Archdiocesan Investment Committee of the Archdiocese of Philadelphia from 2004 to 2012; Director, The Committee of Seventy (civic) from 2006 to 2012; Director, Fox Chase Cancer Center from 2004 to 2011.	33 RICs consisting of 107 Portfolios	None
David O. Beim 55 East 52nd Street New York, NY 10055 1940	Director	Since 2007	Professor of Professional Practice at the Columbia University Graduate School of Business since 1991; Trustee, Phillips Exeter Academy from 2002 to 2012; Chairman, Wave Hill, Inc. (public garden and cultural center) from 1990 to 2006.	33 RICs consisting of 107 Portfolios	None
Dr. Matina S. Horner 55 East 52nd Street New York, NY 10055 1939	Director	Since 2007	Executive Vice President, Teachers Insurance and Annuity Association and College Retirement Equities Fund from 1989 to 2003.	33 RICs consisting of 107 Portfolios	NSTAR (electric and gas utility)
Herbert I. London 55 East 52nd Street New York, NY 10055 1939	Director	Since 2007	President, London Center for Policy Research since 2012; Professor Emeritus, New York University since 2005; John M. Olin Professor of Humanities, New York University from 1993 to 2005 and Professor thereof from 1980 to 2005; President Emeritus, Hudson Institute (policy research organization) from 2011 to 2012, President thereof from 1997 to 2011 and Trustee from 1980 to 2012; Chairman of the Board of Trustees for Grantham University since 2006; Director, InnoCentive, Inc. (global internet services) since 2005; Director, Cerego, LLC (educational software) since 2005; Director, Cybersettle (online adjudication) since 2009; Director, AIMS Worldwide, Inc. (marketing) from 2007 to 2012.	33 RICs consisting of 107 Portfolios	None
Ian A. MacKinnon 55 East 52nd Street New York, NY 10055 1948	Director	Since 2012	Director, Kennett Capital, Inc. (investments) since 2006; Director, Free Library of Philadelphia from 1998 to 2008.	33 RICs consisting of 107 Portfolios	None
Cynthia A. Montgomery 55 East 52nd Street New York, NY 10055 1952	Director	Since 2007	Professor, Harvard Business School since 1989; Director, McLean Hospital from 2005 to 2012; Director, Harvard Business School Publishing from 2005 to 2010.	33 RICs consisting of 107 Portfolios	Newell Rubbermaid, Inc. (manufacturing)
Joseph P. Platt 55 East 52nd Street New York, NY 10055 1947	Director	Since 2007	Director, Jones and Brown (Canadian insurance broker) since 1998; General Partner, Thorn Partners, LP (private investments) since 1998; Director, WQED Multi-Media (public broadcasting not-for-profit) since 2001; Director, The West Penn Allegheny Health System (a not-for-profit health system) from 2008 to 2013; Partner, Amarna Corporation, LLC (private investment company) from 2002 to 2008.	33 RICs consisting of 107 Portfolios	Greenlight Capital Re, Ltd. (reinsurance company)
Robert C. Robb, Jr. 55 East 52nd Street New York, NY 10055 1945	Director	Since 2007	Partner, Lewis, Eckert, Robb and Company (management and financial consulting firm) since 1981.	33 RICs consisting of 107 Portfolios	None

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 65

Officers and Directors (continued)

Name, Address and Year of Birth	Position(s) Held with Corporation/ Master LLC	Length of Time Served as a Director2	Principal Occupation(s) During Past Five Years	Number of BlackRock- Advised Registered Investment Companies (“RICs”) Consisting of Investment Portfolios (“Portfolios”) Overseen	Public Directorships
Independent Directors1 (concluded)
Toby Rosenblatt 55 East 52nd Street New York, NY 10055 1938	Director	Since 2007	President, Founders Investments Ltd. (private investments) since 1999; Director, Forward Management, LLC since 2007; Director, College Access Foundation of California (philanthropic foundation) since 2009; Director, A.P. Pharma, Inc. (specialty pharmaceuticals) from 1983 to 2011; Director, The James Irvine Foundation (philanthropic foundation) from 1998 to 2008.	33 RICs consisting of 107 Portfolios	None
Kenneth L. Urish 55 East 52nd Street New York, NY 10055 1951	Director	Since 2007	Managing Partner, Urish Popeck & Co., LLC (certified public accountants and consultants) since 1976; Immediate past-Chairman of the Professional Ethics Committee of the Pennsylvania Institute of Certified Public Accountants and Committee Member thereof since 2007; Member of External Advisory Board, The Pennsylvania State University Accounting Department since 2001; Principal, UP Strategic Wealth Investment Advisors, LLC since 2013; Trustee, The Holy Family Institute from 2001 to 2010; President and Trustee, Pittsburgh Catholic Publishing Associates from 2003 to 2008; Director, Inter-Tel from 2006 to 2007.	33 RICs consisting of 107 Portfolios	None
Frederick W. Winter 55 East 52nd Street New York, NY 10055 1945	Director	Since 2007	Director, Alkon Corporation (pneumatics) since 1992; Professor and Dean Emeritus of the Joseph M. Katz School of Business, University of Pittsburgh from 2005 to 2013 and Dean thereof from 1997 to 2005; Director, Tippman Sports (recreation) from 2005 to 2013; Director, Indotronix International (IT services) from 2004 to 2008.	33 RICs consisting of 107 Portfolios	None
	1   Directors serve until their resignation, removal or death, or until December 31 of the year in which they turn 72. The Board has approved extensions in terms of Directors who turn 72 prior to December 31, 2013.
	2   Date shown is the earliest date a person has served for the Corporation/Master LLC covered by this annual report. Following the combination of Merrill Lynch Investment Managers, L.P. (“MLIM”) and BlackRock, Inc. (“BlackRock”) in September 2006, the various legacy MLIM and legacy BlackRock fund boards were realigned and consolidated into three new fund boards in 2007. As a result, although the chart shows certain Directors as joining the Corporation’s/Master LLC’s board in 2007, those Directors first became members of the boards of other legacy MLIM or legacy BlackRock funds as follows: David O. Beim, 1998; Ronald W. Forbes, 1977; Dr. Matina S. Horner, 2004; Rodney D. Johnson, 1995; Herbert I. London, 1987; Cynthia A. Montgomery, 1994; Joseph P. Platt, 1999; Robert C. Robb, Jr., 1998; Toby Rosenblatt, 2005; Kenneth L. Urish, 1999; and Frederick W. Winter, 1999.
Interested Directors3
Paul L. Audet 55 East 52nd Street New York, NY 10055 1953	Director	Since 2011	Senior Managing Director of BlackRock and Head of U.S. Mutual Funds since 2011; Chair of the U.S. Mutual Funds Committee reporting to the Global Executive Committee since 2011; Head of BlackRock’s Real Estate business from 2008 to 2011; Member of BlackRock’s Global Operating and Corporate Risk Management Committees and of the BlackRock Alternative Investors Executive Committee and Investment Committee for the Private Equity Fund of Funds business since 2008; Head of BlackRock’s Global Cash Management business from 2005 to 2010; Acting Chief Financial Officer of BlackRock from 2007 to 2008; Chief Financial Officer of BlackRock from 1998 to 2005.	144 RICs consisting of 278 Portfolios	None
Henry Gabbay 55 East 52nd Street New York, NY 10055 1947	Director	Since 2007	Consultant, BlackRock from 2007 to 2008; Managing Director, BlackRock from 1989 to 2007; Chief Administrative Officer, BlackRock Advisors, LLC from 1998 to 2007; President of BlackRock Funds and BlackRock Allocation Target Shares (formerly BlackRock Bond Allocation Target Shares) from 2005 to 2007 and Treasurer of certain closed-end funds in the BlackRock fund complex from 1989 to 2006.	144 RICs consisting of 278 Portfolios	None
	3   Mr. Audet is an “interested person,” as defined in the 1940 Act, of the Corporation/Master LLC based on his position with BlackRock and its affiliates. Mr. Gabbay is an “interested person” of the Corporation/Master LLC based on his former positions with BlackRock and its affiliates as well as his ownership of BlackRock and The PNC Financial Services Group, Inc. securities. Mr. Audet and Mr. Gabbay are also Directors of the BlackRock registered closed-end funds and Directors of other BlackRock registered open-end funds. Directors serve until their resignation, removal or death, or until December 31 of the year in which they turn 72.

66 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Officers and Directors (concluded)

Name, Address and Year of Birth	Position(s) Held with Corporation/ Master LLC	Length of Time Served	Principal Occupation(s) During Past Five Years
Officers1
John M. Perlowski 55 East 52nd Street New York, NY 10055 1964	President and Chief Executive Officer	Since 2010	Managing Director of BlackRock since 2009; Global Head of BlackRock Fund Services since 2009; Managing Director and Chief Operating Officer of the Global Product Group at Goldman Sachs Asset Management, L.P. from 2003 to 2009; Treasurer of Goldman Sachs Mutual Funds from 2003 to 2009 and Senior Vice President thereof from 2007 to 2009; Director of Goldman Sachs Offshore Funds from 2002 to 2009; Director of Family Resource Network (charitable foundation) since 2009.
Brendan Kyne 55 East 52nd Street New York, NY 10055 1977	Vice President	Since 2009	Managing Director of BlackRock since 2010; Director of BlackRock from 2008 to 2009; Head of Product Development and Management for BlackRock’s U.S. Retail Group since 2009 and Co-head thereof from 2007 to 2009; Vice President of BlackRock from 2005 to 2008.
Neal Andrews 55 East 52nd Street New York, NY 10055 1966	Chief Financial Officer	Since 2007	Managing Director of BlackRock since 2006; Senior Vice President and Line of Business Head of Fund Accounting and Administration at PNC Global Investment Servicing (U.S.) Inc. from 1992 to 2006.
Jay Fife 55 East 52nd Street New York, NY 10055 1970	Treasurer	Since 2007	Managing Director of BlackRock since 2007; Director of BlackRock in 2006; Assistant Treasurer of the MLIM and Fund Asset Management, L.P. advised funds from 2005 to 2006; Director of MLIM Fund Services Group from 2001 to 2006.
Brian Kindelan 55 East 52nd Street New York, NY 10055 1959	Chief Compliance Officer and Anti-Money Laundering Officer	Since 2007	Chief Compliance Officer of the BlackRock-advised funds since 2007; Managing Director and Senior Counsel of BlackRock since 2005.
Benjamin Archibald 55 East 52nd Street New York, NY 10055 1975	Secretary	Since 2012	Managing Director of BlackRock since 2014; Director of BlackRock from 2010 to 2013; Assistant Secretary of the BlackRock-advised funds from 2010 to 2012; General Counsel and Chief Operating Officer of Uhuru Capital Management from 2009 to 2010; Executive Director and Counsel of Goldman Sachs Asset Management from 2005 to 2009.
	1   Officers of the Corporation/Master LLC serve at the pleasure of the Board.
	Further information about the Officers and Directors is available in the Corporation’s/Master LLC’s Statement of Additional Information, which can be obtained without charge by calling (800) 441-7762.

Investment Advisor BlackRock Advisors, LLC Wilmington, DE 19809	Custodians JPMorgan Chase Bank, N.A.2 Brooklyn, NY 11245 State Street Bank and Trust Company3 Boston, MA 02110	Accounting Agent State Street Bank and Trust Company Boston, MA 02110	Distributor BlackRock Investments, LLC New York, NY 10022	Address of the Funds 100 Bellevue Parkway Wilmington, DE 19809
Sub-Advisor BlackRock Investment Management, LLC Princeton, NJ 08540	Transfer Agent BNY Mellon Investment Servicing (US) Inc. Wilmington, DE 19809	Independent Registered Public Accounting Firm Deloitte & Touche LLP Boston, MA 02116	Legal Counsel Sidley Austin LLP New York, NY 10019

²  For International Index Fund.

³  For Small Cap Index Fund.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 67

Additional Information

General Information

Electronic Delivery

Electronic copies of most financial reports and prospectuses are available on the Funds’ website or shareholders can sign up for e-mail notifications of quarterly statements, annual and semi-annual reports and prospectuses by enrolling in the Funds’ electronic delivery program.

To enroll:

Shareholders Who Hold Accounts with Investment Advisors, Banks or Brokerages:

Please contact your financial advisor. Please note that not all investment advisors, banks or brokerages may offer this service.

Shareholders Who Hold Accounts Directly with BlackRock:

1) Access the BlackRock website at http://www.blackrock.com/edelivery

2) Select “eDelivery” under the “More Information” section

3) Log into your account

Householding

The Funds will mail only one copy of shareholder documents, including prospectuses, annual and semi-annual reports and proxy statements, to shareholders with multiple accounts at the same address. This practice is commonly called “householding” and is intended to reduce expenses and eliminate duplicate mailings of shareholder documents. Mailings of your shareholder documents may be householded indefinitely unless you instruct us otherwise. If you do not want the mailing of these documents to be combined with those for other members of your household, please call the Funds at (800) 441-7762.

Availability of Quarterly Schedule of Investments

The Funds/Series 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’/Series’ Forms N-Q are available on the SEC’s website at http://www.sec.gov and may also be reviewed and copied at the SEC’s Public Reference Room in Washington, DC. Information on how to access documents on the SEC’s website without charge may be obtained by calling (800) SEC-0330. The Funds’/Series’ Forms N-Q may also be obtained upon request and without charge by calling (800) 441-7762.

Availability of Proxy Voting Policies and Procedures

A description of the policies and procedures that the Funds/Series use to determine how to vote proxies relating to portfolio securities is available (1) without charge, upon request, by calling (800) 441-7762; (2) at http://www.blackrock.com; and (3) on the SEC’s website at http://www.sec.gov.

Availability of Proxy Voting Record

Information about how the Funds/Series voted proxies relating to securities held in the Funds’/Series’ portfolio during the most recent 12-month period ended June 30 is available upon request and without charge (1) at http://www.blackrock.com or by calling (800) 441-7762 and (2) on the SEC’s website at http://www.sec.gov.

68 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

Additional Information (concluded)

Shareholder Privileges

Account Information

Call us at (800) 441-7762 from 8:00 AM to 6:00 PM EST on any business day to get information about your account balances, recent transactions and share prices. You can also reach us on the Web at http://www.blackrock.com/funds.

Automatic Investment Plans

Investor Class shareholders who want to invest regularly can arrange to have $50 or more automatically deducted from their checking or savings account and invested in any of the BlackRock funds.

Systematic Withdrawal Plans

Investor Class shareholders can establish a systematic withdrawal plan and receive periodic payments of $50 or more from their BlackRock funds, as long as their account balance is at least $10,000.

Retirement Plans

Shareholders may make investments in conjunction with Traditional, Rollover, Roth, Coverdell, Simple IRAs, SEP IRAs and 403(b) Plans.

BlackRock Privacy Principles

BlackRock is committed to maintaining the privacy of its current and former fund investors and individual clients (collectively, “Clients”) and to safeguarding their non-public personal information. The following information is provided to help you understand what personal information BlackRock collects, how we protect that information and why in certain cases we share such information with select parties.

If you are located in a jurisdiction where specific laws, rules or regulations require BlackRock to provide you with additional or different privacy-related rights beyond what is set forth below, then BlackRock will comply with those specific laws, rules or regulations.

BlackRock obtains or verifies personal non-public information from and about you from different sources, including the following: (i) information we receive from you or, if applicable, your financial intermediary, on applications, forms or other documents; (ii) information about your transactions with us, our affiliates, or others; (iii) information we receive from a consumer reporting agency; and (iv) from visits to our websites.

BlackRock does not sell or disclose to non-affiliated third parties any non-public personal information about its Clients, except as permitted by law or as is necessary to respond to regulatory requests or to service Client accounts. These non-affiliated third parties are required to protect the confidentiality and security of this information and to use it only for its intended purpose.

We may share information with our affiliates to service your account or to provide you with information about other BlackRock products or services that may be of interest to you. In addition, BlackRock restricts access to non-public personal information about its Clients to those BlackRock employees with a legitimate business need for the information. BlackRock maintains physical, electronic and procedural safeguards that are designed to protect the non-public personal information of its Clients, including procedures relating to the proper storage and disposal of such information.

BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013 69

A World-Class Mutual Fund Family

BlackRock offers a diverse lineup of open-end mutual funds crossing all investment styles and managed by experts in equity, fixed income and tax-exempt investing.

Equity Funds

BlackRock ACWI ex-US Index Fund

BlackRock All-Cap Energy & Resources Portfolio

BlackRock Basic Value Fund

BlackRock Capital Appreciation Fund

BlackRock Commodity Strategies Fund

BlackRock Disciplined Small Cap Core Fund

BlackRock Emerging Markets Fund

BlackRock Emerging Markets Dividend Fund

BlackRock Emerging Markets Long/Short Equity Fund

BlackRock Energy & Resources Portfolio

BlackRock Equity Dividend Fund

BlackRock EuroFund

BlackRock Flexible Equity Fund

BlackRock Focus Growth Fund

BlackRock Global Dividend Income Portfolio

BlackRock Global Long/Short Equity Fund

BlackRock Global Opportunities Portfolio

BlackRock Global SmallCap Fund

BlackRock Health Sciences Opportunities Portfolio

BlackRock International Fund

BlackRock International Index Fund

BlackRock International Opportunities Portfolio

BlackRock Large Cap Core Fund

BlackRock Large Cap Core Plus Fund

BlackRock Large Cap Growth Fund

BlackRock Large Cap Value Fund

BlackRock Latin America Fund

BlackRock Long-Horizon Equity Fund

BlackRock Mid-Cap Growth Equity Portfolio

BlackRock Mid Cap Value Opportunities Fund

BlackRock Natural Resources Trust

BlackRock Pacific Fund

BlackRock Real Estate Securities Fund

BlackRock Russell 1000^® Index Fund

BlackRock Science & Technology Opportunities Portfolio

BlackRock Small Cap Growth Equity Portfolio

BlackRock Small Cap Growth Fund II

BlackRock Small Cap Index Fund

BlackRock S&P 500 Stock Fund

BlackRock U.S. Opportunities Portfolio

BlackRock Value Opportunities Fund

Taxable Fixed Income Funds

BlackRock Bond Index Fund

BlackRock Core Bond Portfolio

BlackRock CoreAlpha Bond Fund

BlackRock CoRI Funds

2015

2017

2019

2021

2023

BlackRock Emerging Markets Flexible Dynamic Bond Portfolio

BlackRock Floating Rate Income Portfolio

BlackRock Global Long/Short Credit Fund

BlackRock GNMA Portfolio

BlackRock High Yield Bond Portfolio

BlackRock Inflation Protected Bond Portfolio

BlackRock International Bond Portfolio

BlackRock Investment Grade Bond Portfolio

BlackRock Low Duration Bond Portfolio

BlackRock Secured Credit Portfolio

BlackRock Short Obligations Fund

BlackRock Short-Term Treasury Fund

BlackRock Strategic Income Opportunities Portfolio

BlackRock Total Return Fund

BlackRock U.S. Government Bond Portfolio

BlackRock U.S. Mortgage Portfolio

BlackRock Ultra-Short Obligations Fund

BlackRock World Income Fund

Municipal Fixed Income Funds

BlackRock California Municipal Bond Fund

BlackRock High Yield Municipal Fund

BlackRock National Municipal Fund

BlackRock New Jersey Municipal Bond Fund

BlackRock New York Municipal Bond Fund

BlackRock Pennsylvania Municipal Bond Fund

BlackRock Short-Term Municipal Fund

BlackRock Strategic Municipal Opportunities Fund

Mixed Asset Funds

BlackRock Balanced Capital Fund	LifePath Active Portfolios			LifePath Index Portfolios
BlackRock Emerging Market Allocation Portfolio		2015	2040		Retirement	2040
BlackRock Global Allocation Fund		2020	2045		2020	2045
BlackRock Managed Volatility Portfolio		2025	2050		2025	2050
BlackRock Multi-Asset Income Portfolio		2030	2055		2030	2055
BlackRock Multi-Asset Real Return Fund		2035			2035
BlackRock Strategic Risk Allocation Fund
BlackRock Prepared Portfolios	LifePath Portfolios
Conservative Prepared Portfolio		Retirement	2040
Moderate Prepared Portfolio		2020	2045
Growth Prepared Portfolio		2025	2050
Aggressive Growth Prepared Portfolio		2030	2055
		2035

BlackRock mutual funds are currently distributed by BlackRock Investments, LLC. You should consider the investment objectives, risks, charges and expenses of the funds under consideration carefully before investing. Each fund’s prospectus contains this and other information and is available at www.blackrock.com or by calling (800) 441-7762 or from your financial advisor. The prospectus should be read carefully before investing.

70 BLACKROCK INDEX FUNDS, INC. DECEMBER 31, 2013

This report is transmitted to shareholders only. It is not authorized for use as an offer of sale or a solicitation of an offer to buy shares of a Fund, unless accompanied or preceded by that Fund’s current prospectus. Past performance results shown in this report should not be considered a representation of future performance. Investment returns and principal value of shares will fluctuate so that shares, when redeemed, may be worth more or less than their original cost. Statements and other information herein are as dated and are subject to change. Please see each Fund’s prospectus for a description of risks associated with global investments.

Index2-12/13-AR

Item 2 – Code of Ethics – Each registrant (or “Fund”) has adopted a code of ethics, as of the end of the period covered by this report, applicable to the registrant’s principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions. During the period covered by this report, there have been no amendments to or waivers granted under the code of ethics. A copy of the code of ethics is available without charge at www.blackrock.com.

Item 3 – Audit Committee Financial Expert – Each registrant’s board of directors (the “board of directors”), has determined that (i) the registrant has the following audit committee financial expert serving on its audit committee and (ii) each audit committee financial expert is independent: Kenneth L. Urish

Under applicable securities laws, a person determined to be an audit committee financial expert will not be deemed an “expert” for any purpose, including without limitation for the purposes of Section 11 of the Securities Act of 1933, as a result of being designated or identified as an audit committee financial expert. The designation or identification of a person as an audit committee financial expert does not impose on such person any duties, obligations, or liabilities greater than the duties, obligations, and liabilities imposed on such person as a member of the audit committee and board of directors in the absence of such designation or identification.

Item 4 – Principal Accountant Fees and Services

The following table presents fees billed by Deloitte & Touche LLP (“D&T”) in each of the last two fiscal years for the services rendered to the Funds:

	(a) Audit Fees				(b) Audit-Related Fees1				(c) Tax Fees2				(d) All Other Fees3
Entity Name	Current Fiscal Year End		Previous Fiscal Year End		Current Fiscal Year End		Previous Fiscal Year End		Current Fiscal Year End		Previous Fiscal Year End		Current Fiscal Year End		Previous Fiscal Year End
BlackRock International Index Fund of BlackRock Index Funds, Inc.	$	7,363	$	7,100	$	0	$	0	$	9,100	$	8,600	$	0	$	0
BlackRock Small Cap Index Fund of BlackRock Index Funds, Inc.	$	7,363	$	7,100	$	0	$	0	$	11,200	$	10,700	$	0	$	0
Master International Index Series of Quantitative Master Series LLC	$	37,563	$	37,300	$	0	$	0	$	17,000	$	17,000	$	0	$	0
Master Small Cap Index Series of Quantitative Master Series LLC	$	38,763	$	38,500	$	0	$	0	$	17,000	$	17,000	$	0	$	0

The following table presents fees billed by D&T that were required to be approved by each registrant’s audit committee (each a “Committee”) for services that relate directly to the operations or financial reporting of the Fund and that are rendered on behalf of BlackRock Advisors, LLC (“Investment Adviser” or “BlackRock”) and entities controlling, controlled by, or under common control with BlackRock (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser) that provide ongoing services to the Fund (“Fund Service Providers”):

	Current Fiscal Year End		Previous Fiscal Year End
(b) Audit-Related Fees1	$	0	$	0
(c) Tax Fees2	$	0	$	0
(d) All Other Fees3	$	2,865,000	$	2,970,000

2

¹  The nature of the services includes assurance and related services reasonably related to the performance of the audit of financial statements not included in Audit Fees.

²  The nature of the services includes tax compliance, tax advice and tax planning.

³  Aggregate fees borne by BlackRock in connection with the review of compliance procedures and attestation thereto performed by D&T with respect to all of the registered closed-end funds and some of the registered open-end funds advised by BlackRock.

(e) (1) Audit Committee Pre-Approval Policies and Procedures:

Each Committee has adopted policies and procedures with regard to the pre-approval of services. Audit, audit-related and tax compliance services provided to the registrant on an annual basis require specific pre-approval by the registrant’s Committee. The Committee also must approve other non-audit services provided to the registrant and those non-audit services provided to the Investment Adviser and Fund Service Providers that relate directly to the operations and the financial reporting of the registrant. Certain of these non-audit services that the Committee believes are (a) consistent with the SEC’s auditor independence rules and (b) routine and recurring services that will not impair the independence of the independent accountants may be approved by the Committee without consideration on a specific case-by-case basis (“general pre-approval”). The term of any general pre-approval is 12 months from the date of the pre-approval, unless the Committee provides for a different period. Tax or other non-audit services provided to the registrants which have a direct impact on the operations or financial reporting of the registrant will only be deemed pre-approved provided that any individual project does not exceed $10,000 attributable to the registrant or $50,000 per project. For this purpose, multiple projects will be aggregated to determine if they exceed the previously mentioned cost levels.

Any proposed services exceeding the pre-approved cost levels will require specific pre-approval by the registrant’s Committee, as will any other services not subject to general pre-approval (e.g., unanticipated but permissible services). The Committee is informed of each service approved subject to general pre-approval at the next regularly scheduled in-person board meeting. At this meeting, an analysis of such services is presented to the Committee for ratification. The Committee may delegate to the Committee Chairman the authority to approve the provision of and fees for any specific engagement of permitted non-audit services, including services exceeding pre-approved cost levels.

(e)(2) None of the services described in each of Items 4(b) through (d) were approved by either Committee pursuant to the de minimus exception in paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

(f) Not Applicable

(g) The aggregate non-audit fees paid to the accountant for services rendered by the accountant to the registrant, the Investment Adviser and the Fund Service Providers were:

Entity Name	Current Fiscal Year End		Previous Fiscal Year End
BlackRock International Index Fund of BlackRock Index Funds, Inc.	$	9,100	$	8,600
BlackRock Small Cap Index Fund of BlackRock Index Funds, Inc.	$	11,200	$	10,700
Master International Index Series of Quantitative Master Series LLC	$	17,000	$	17,000
Master Small Cap Index Series of Quantitative Master Series LLC	$	17,000	$	18,600

3

Additionally, SSAE 16 Review (Formerly, SAS No. 70) fees for the current and previous fiscal years of $2,865,000 and $2,970,000, respectively, were billed by D&T to the Investment Adviser.

(h) Each Committee has considered and determined that the provision of non-audit services that were rendered to the Investment Adviser and the Fund Service Providers that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant’s independence.

Item 5 – Audit Committee of Listed Registrants – Not Applicable

Item 6 – Investments

(a) The registrants’ Schedules of Investments are included as part of the Report to Stockholders filed under Item 1 of this Form.

(b) Not Applicable due to no such divestments during the semi-annual period covered since the previous Form N-CSR filing.

Item 7 – Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies – Not Applicable

Item 8 – Portfolio Managers of Closed-End Management Investment Companies – Not Applicable

Item 9 – Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers – Not Applicable

Item 10 – Submission of Matters to a Vote of Security Holders – There have been no material changes to these procedures.

Item 11 – Controls and Procedures

(a) – The registrants’ principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrants’ disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 15(d)-15(b) under the Securities Exchange Act of 1934, as amended.

(b) – There were no changes in the registrants’ internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act) that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrants’ internal control over financial reporting.

Item 12 – Exhibits attached hereto

(a)(1) – Code of Ethics – See Item 2

(a)(2) – Certifications – Attached hereto

(a)(3) – Not Applicable

(b) –     Certifications – Attached hereto

4

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, each registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

BlackRock Index Funds, Inc. and Quantitative Master Series LLC

By:	/s/ John M. Perlowski
	John M. Perlowski

       Chief Executive Officer (principal executive officer) of

       BlackRock Index Funds, Inc. and Quantitative Master Series LLC

Date: February 28, 2014

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 each registrant and in the capacities and on the dates indicated.

By:	/s/ John M. Perlowski
	John M. Perlowski

       Chief Executive Officer (principal executive officer) of

       BlackRock Index Funds, Inc. and Quantitative Master Series LLC

Date: February 28, 2014

By:	/s/ Neal J. Andrews
	Neal J. Andrews

       Chief Financial Officer (principal financial officer) of

       BlackRock Index Funds, Inc. and Quantitative Master Series LLC

Date: February 28, 2014

5