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 811-9637

Name of Fund: Merrill Lynch Large Cap Growth Fund
              Master Large Cap Growth Portfolio

Fund Address: P.O. Box 9011
              Princeton, NJ 08543-9011

Name and address of agent for service: Terry K. Glenn, President, Merrill Lynch
        Large Cap Growth Fund, 800 Scudders Mill Road, Plainsboro, NJ 08536.
        Mailing address: P.O. Box 9011, Princeton, NJ 08543-9011

Registrant's telephone number, including area code: (609) 282-2800

Date of fiscal year end: 04/30/03

Date of reporting period: 11/01/02 - 04/30/03

Item 1 - Attach shareholder report




[LOGO] Merrill Lynch Investment Managers

Semi-Annual Report
April 30, 2003

Merrill Lynch
Large Cap
Growth Fund
Of Merrill Lynch Large Cap Series Funds, Inc.

www.mlim.ml.com


                       MERRILL LYNCH LARGE CAP GROWTH FUND

Portfolio
Information as of
April 30, 2003

                                                                      Percent of
Ten Largest Equity Holdings                                           Net Assets
- --------------------------------------------------------------------------------
General Electric Company ............................................     4.5%
Pfizer Inc. .........................................................     3.6
Microsoft Corporation ...............................................     3.4
Merck & Co., Inc. ...................................................     2.8
Fannie Mae ..........................................................     2.6
Dell Computer Corporation ...........................................     2.4
Oracle Corporation ..................................................     2.0
Johnson & Johnson ...................................................     2.0
First Data Corporation ..............................................     1.8
QUALCOMM Inc. .......................................................     1.6
- --------------------------------------------------------------------------------

                                                                      Percent of
Five Largest Industries*                                              Net Assets
- --------------------------------------------------------------------------------
Pharmaceuticals .....................................................    13.1%
Software ............................................................    12.9
Health Care Equipment & Supplies ....................................     6.8
Commercial Services & Supplies ......................................     6.6
Communications Equipment ............................................     5.5
- --------------------------------------------------------------------------------

*     For Portfolio compliance purposes, "Industry" means any one or more of the
      industry sub-classifications used by one or more widely recognized market
      indexes or ratings group indexes, and/or as defined by Portfolio
      management. This definition may not apply for purposes of this report,
      which may combine such industry sub-classifications for reporting ease.


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

DEAR SHAREHOLDER

Effective April 14, 2003, the share class names for the Merrill Lynch family of
mutual funds were changed to be consistent with the standard share classes of
most other mutual fund families. As of that date, all Class A Shares were
redesignated Class I Shares. At the same time, Class D Shares were redesignated
Class A Shares. There are no changes to the Class B or Class C share class
labels. Trading symbols have not changed nor have current eligibility rules or
pricing structures. This redesignation of share classes does not impact your
investment in any way.

Merrill Lynch Large Cap Growth Fund invests primarily in a diversified portfolio
of equity securities of large cap companies that Fund management selects from
among the securities found in the Russell 1000 Growth Index. Our investment
process attempts to add value through both security selection and portfolio
construction. Security selection involves the use of quantitative selection
criteria including earnings momentum, earnings surprise and valuation. These
criteria are input into a proprietary quantitative model and are subject to
selective fundamental overrides. Portfolio construction consists of an
optimization process with risk management controlling style, capitalization,
sector and individual security selection.

Fund Performance

For the six months ended April 30, 2003, the Fund's Class A, Class B, Class C
and Class I Shares had total returns of -1.25%, -1.60%, -1.60% and -1.09%,
respectively. (Fund results shown do not reflect sales charges, and would be
lower if sales charges were included. Complete performance information can be
found on pages 4 and 5 of this report to shareholders.) The Fund's results were
below the +4.28% total return of the benchmark, the unmanaged Russell 1000
Growth Index for the same six-month period.

The past six months have been challenging. Our relative performance trailed the
Fund's benchmark. Overall, most of the underperformance was attributable to
stock selection, particularly in information technology, health care and
consumer discretionary. On the positive side, the Portfolio benefited from stock
selection in financials and consumer staples. The Portfolio's underweight in
consumer staples also contributed to performance. At the individual stock level,
the largest positive contributors to performance were The Ryland Group, Inc.,
CheckFree Corp., Apollo Group, Inc., Coach, Inc. and Accredo Health,
Incorporated. We also benefited from our underweights in Coca-Cola Enterprises
Inc. and Altria Group Inc. (formerly Philip Morris Companies Inc.). The largest
detractors to performance included PETsMART, Inc., Michael's Stores and Charles
River Laboratories International Inc. In addition, underweights in Amgen Inc.,
Cisco Systems, Inc. and Tenet Healthcare Corporation had a negative impact on
performance. Our largest purchases during the period included First Data
Corporation, Merck & Co., Inc., Oracle Corporation, QUALCOMM Inc. and Nextel
Communications, Inc., while our largest sales included H&R Block, Inc., Mohawk
Industries, Inc., The Procter and Gamble Company, UnitedHealth Group
Incorporated and HCA Inc.

During the course of the period, we increased our positions relative to the
benchmark in technology and telecommunication services, and reduced our holdings
in consumer staples and consumer discretionary. Our largest overweights were in
information technology and consumer discretionary, while our largest
underweights were in consumer staples and financials. We are positioned for an
improvement in economic activity, continued positive earnings comparisons, and
an eventual uptick in interest rates. As always, we seek to own companies that
we believe have improving earnings momentum, a high probability of positive
earnings surprises, and reasonable valuations.

Economic Environment

To provide a larger context in which to view the portfolio, it is important to
understand that the economy has suffered a sharp loss of confidence this year.
The Conference Board survey showed that employment conditions are at risk of
deteriorating. Although new unemployment claims have not surged, jobs are still
seen as hard to come by, indicating that new job creation is still weak. The
risk is that a new round of layoffs and investment cutbacks will occur if the
business sector sees final demand slipping. Consumption has slowed in the past
two months, partly owing to bad weather, but also because confidence was hit by
the deterioration in the geopolitical backdrop and energy price crunch. While
there has been a modest drop in oil and natural gas prices recently, the relief
is not sufficient to offset renewed concerns about employment.

Treasury securities remain overvalued, but are likely to remain so until
economic expectations stabilize and deflation fears ease. The Federal Reserve
Board is going to continue to focus on trying to boost the economy and will not
contemplate shifting from this stance until well after the economy has
strengthened. In our opinion, longer-term investors should stay underweight in
bonds (slightly below-average duration), and within bond portfolios maintain an
overweight stance on corporates. Corporate bonds have weathered a difficult
economic patch in recent months, underscoring the power of good value and
improving corporate balance sheets.

The Standard & Poor's 500 Index is roughly in the middle of its trading range
(800 - 950), and we remain hopeful that a test of the upper end will develop. A
break to the upside would likely occur if the economy and corporate earnings
improve in a sustainable fashion. While profits have managed to do a bit better
than expected, some of this has been driven by cutbacks in investment and labor,
which have been economically bearish. Continued strong productivity growth
helped to contain unit labor costs, while pricing power improved a bit. Profits
likely suffered a setback in the first quarter given the spike in energy costs
and softness in overall demand. The budding stability in pricing power will be
in jeopardy unless demand growth re-accelerates. The profit environment will
remain tough, but the corporate sector is still focused on boosting the bottom
line, raising the hope that better times loom once the drag from the war lifts
and oil prices correct further. Investors need to believe that corporate profits
will rise in a self-reinforcing fashion before they will shift funds into
equities, particularly given the lack of great value in the market. It could be
a few months before the economic data clarifies whether the economy is still on
a recovery track or has been delayed or derailed. Until then, equities are
likely to remain trendless. While other investments are not offering much
competition to stocks, investors also have lost considerable capital in the
equity market since March 2000, and will remain leery, absent clear evidence
that the world economy is healing.

The bottom line is that the economy has taken a hard blow this year, but it is
not yet down for the count. If the economy does not revive soon, then hopes for
another equity upleg are likely to be dashed. Worse, equities could break below
their October 2002 low if the economy falters. Investors are already deeply
pessimistic and monetary policy will stay highly reflationary, but these
conditions are not sufficient to spur a bull market in the absence of stronger
earnings. Importantly, investors and the business sector need greater confidence
and rising hopes for a more profitable future in order to take risks. The energy
market and geopolitical backdrop have punished risk-taking and only these
factors can help restore some vitality.

In Conclusion

We appreciate your investment in Merrill Lynch Large Cap Growth Fund, and we
look forward to serving your financial needs in the months and years ahead.

Sincerely,


/s/ Terry K. Glenn

Terry K. Glenn
President and Director/Trustee


/s/ Robert C. Doll, Jr.

Robert C. Doll, Jr.
Senior Vice President and
Portfolio Manager

May 27, 2003


                                      2 & 3


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

PERFORMANCE DATA

About Fund
Performance

Effective April 14, 2003, Class A Shares were redesignated Class I Shares and
Class D Shares were redesignated Class A Shares. Investors are able to purchase
shares of the Fund through multiple pricing alternatives:

o     Class A Shares incur a maximum initial sales charge of 5.25% and an
      account maintenance fee of 0.25% (but no distribution fee).

o     Effective June 1, 2001, Class B Shares are subject to a maximum contingent
      deferred sales charge of 4% declining to 0% after six years. All Class B
      Shares purchased prior to June 1, 2001 will maintain the four-year
      schedule. In addition, Class B Shares are subject to a distribution fee of
      0.75% and an account maintenance fee of 0.25%. These shares automatically
      convert to Class A Shares after approximately eight years. (There is no
      initial sales charge for automatic share conversions.)

o     Class C Shares are subject to a distribution fee of 0.75% and an account
      maintenance fee of 0.25%. In addition, Class C Shares are subject to a 1%
      contingent deferred sales charge if redeemed within one year of purchase.

o     Class I Shares incur a maximum initial sales charge (front-end load) of
      5.25% and bear no ongoing distribution or account maintenance fees. Class
      I Shares are available only to eligible investors.

o     Class R Shares do not incur a maximum sales charge (front-end load) or
      deferred sales charge. These shares are subject to a distribution fee of
      0.25% and an account maintenance fee of 0.25%. Class R Shares are
      available only to certain retirement plans.

None of the past results shown should be considered a representation of future
performance. 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 each of the following tables assume reinvestment of all
dividends and capital gains distributions at net asset value 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 account maintenance, distribution and transfer agency fees applicable to each
class, which are deducted from the income available to be paid to shareholders.

Recent
Performance
Results



                                                 6-Month          12-Month       Since Inception
As of April 30, 2003                          Total Return      Total Return       Total Return
================================================================================================
                                                                          
ML Large Cap Growth Fund Class A Shares*          -1.25%           -19.31%            -36.87%
- ------------------------------------------------------------------------------------------------
ML Large Cap Growth Fund Class B Shares*          -1.60            -20.03             -38.49
- ------------------------------------------------------------------------------------------------
ML Large Cap Growth Fund Class C Shares*          -1.60            -19.92             -38.48
- ------------------------------------------------------------------------------------------------
ML Large Cap Growth Fund Class I Shares*          -1.09            -19.06             -36.27
- ------------------------------------------------------------------------------------------------
ML Large Cap Growth Fund Class R Shares*             --                --             + 0.32
- ------------------------------------------------------------------------------------------------
Russell 1000 Growth Index**                       +4.28            -14.35          -51.62/+2.81
================================================================================================


*     Investment results shown do not reflect sales charges; results shown would
      be lower if a sales charge was included. Total investment returns are
      based on changes in net asset values for the periods shown, and assume
      reinvestment of all dividends and capital gains distributions at net asset
      value on the ex-dividend date. Performance results are for a limited asset
      pool. The Fund's since inception periods are from 12/22/99 for Class A,
      Class B, Class C & Class I Shares and from 1/03/03 for Class R Shares.
**    This unmanaged broad-based Index is a subset of the Russell 1000 Index
      consisting of those Russell 1000 securities with a greater-than-average
      growth orientation. The since inception total returns are from 12/22/99
      and 1/03/03.

Average Annual
Total Return

                                               % Return Without   % Return With
                                                 Sales Charge     Sales Charge**
================================================================================
Class A Shares*
================================================================================
One Year Ended 4/30/03                              -19.31%           -23.55%
- --------------------------------------------------------------------------------
Inception (12/22/99)
through 4/30/03                                     -12.81            -14.20
- --------------------------------------------------------------------------------

*     Maximum sales charge is 5.25%.
**    Assuming maximum sales charge.

                                                   % Return           % Return
                                                 Without CDSC       With CDSC**
================================================================================
Class B Shares*
================================================================================
One Year Ended 4/30/03                              -20.03%           -23.22%
- --------------------------------------------------------------------------------
Inception (12/22/99)
through 4/30/03                                     -13.48            -14.26
- --------------------------------------------------------------------------------

*     Maximum contingent deferred sales charge is 4% and is reduced to 0% after
      six years.
**    Assuming payment of applicable contingent deferred sales charge.

================================================================================
                                                   % Return           % Return
                                                 Without CDSC       With CDSC**
================================================================================
Class C Shares*
================================================================================
One Year Ended 4/30/03                              -19.92%           -20.72%
- --------------------------------------------------------------------------------
Inception (12/22/99)
through 4/30/03                                     -13.48            -13.48
- --------------------------------------------------------------------------------

*     Maximum contingent deferred sales charge is 1% and is reduced to 0% after
      one year.
**    Assuming payment of applicable contingent deferred sales charge.

================================================================================
                                               % Return Without   % Return With
                                                 Sales Charge     Sales Charge**
================================================================================
Class I Shares*
================================================================================
One Year Ended 4/30/03                              -19.06%           -23.31%
- --------------------------------------------------------------------------------
Inception (12/22/99)
through 4/30/03                                     -12.56            -13.95
- --------------------------------------------------------------------------------

*     Maximum sales charge is 5.25%.
**    Assuming maximum sales charge.

Aggregate
Total Return

                                                                % Return Without
                                                                  Sales Charge
================================================================================
Class R Shares
================================================================================
Inception (1/03/03)
through 4/30/03                                                       +0.32%
- --------------------------------------------------------------------------------


                                      4 & 5


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

STATEMENT OF ASSETS AND LIABILITIES



MERRILL LYNCH
LARGE CAP
GROWTH FUND         As of April 30, 2003
=================================================================================================================================
                                                                                                            
Assets:             Investment in Master Large Cap Growth Portfolio, at value (identified
                    cost--$178,805,707) ............................................................                 $191,882,598
                    Prepaid registration fees and expenses .........................................                       55,329
                                                                                                                     ------------
                    Total assets ...................................................................                  191,937,927
                                                                                                                     ------------
=================================================================================================================================
Liabilities:        Payables:
                      Distributor .................................................................. $    112,526
                      Other affiliates .............................................................       53,950
                      Administrator ................................................................       49,085         215,561
                                                                                                     ------------
                    Accrued expenses ...............................................................                       96,223
                                                                                                                     ------------
                    Total liabilities ..............................................................                      311,784
                                                                                                                     ------------
=================================================================================================================================
Net Assets:         Net assets .....................................................................                 $191,626,143
                                                                                                                     ============
=================================================================================================================================
Net Assets          Class A Shares of Common Stock, $.10 par value, 100,000,000 shares authorized ..                 $    287,080
Consist of:         Class B Shares of Common Stock, $.10 par value, 200,000,000 shares authorized ..                    1,338,575
                    Class C Shares of Common Stock, $.10 par value, 100,000,000 shares authorized ..                      883,368
                    Class I Shares of Common Stock, $.10 par value, 100,000,000 shares authorized ..                      578,432
                    Class R Shares of Common Stock, $.10 par value, 200,000,000 shares authorized ..                            2
                    Paid-in capital in excess of par ...............................................                  310,307,825
                    Accumulated investment loss--net ............................................... $ (1,260,127)
                    Accumulated realized capital losses on investments from the Portfolio--net ..... (133,585,903)
                    Unrealized appreciation on investments from the Portfolio--net .................   13,076,891
                                                                                                     ------------
                    Total accumulated losses--net ..................................................                 (121,769,139)
                                                                                                                     ------------
                    Net assets .....................................................................                 $191,626,143
                                                                                                                     ============
=================================================================================================================================
Net Asset           Class A--Based on net assets of $18,116,173 and 2,870,800 shares outstanding ...                 $       6.31
Value:                                                                                                               ============
                    Class B--Based on net assets of $82,376,966 and 13,385,750 shares outstanding ..                 $       6.15
                                                                                                                     ============
                    Class C--Based on net assets of $54,305,646 and 8,833,678 shares outstanding ...                 $       6.15
                                                                                                                     ============
                    Class I--Based on net assets of $36,827,258 and 5,784,316 shares outstanding ...                 $       6.37
                                                                                                                     ============
                    Class R--Based on net assets of $100.36 and 16.23 shares outstanding ...........                 $       6.18
                                                                                                                     ============
=================================================================================================================================


      See Notes to Financial Statements.

STATEMENT OF OPERATIONS



MERRILL LYNCH
LARGE CAP
GROWTH FUND         For the Six Months Ended April 30, 2003
=================================================================================================================================
                                                                                                            
Investment          Net investment income allocated from the Portfolio:
Income from the       Dividends ....................................................................                 $    591,063
Portfolio--Net:       Securities lending--net ......................................................                        9,499
                      Interest .....................................................................                        2,188
                      Expenses .....................................................................                     (572,224)
                                                                                                                     ------------
                    Net investment income from the Portfolio .......................................                       30,526
                                                                                                                     ------------
=================================================================================================================================
Expenses:           Account maintenance and distribution fees--Class B ............................. $    397,641
                    Account maintenance and distribution fees--Class C .............................      261,434
                    Administration fees ............................................................      226,427
                    Transfer agent fees--Class B ...................................................      133,839
                    Transfer agent fees--Class C ...................................................       88,542
                    Transfer agent fees--Class I ...................................................       47,189
                    Registration fees ..............................................................       31,111
                    Printing and shareholder reports ...............................................       27,868
                    Transfer agent fees--Class A ...................................................       23,313
                    Account maintenance fees--Class A ..............................................       20,390
                    Professional fees ..............................................................       15,241
                    Other ..........................................................................       17,658
                                                                                                     ------------
                    Total expenses .................................................................                    1,290,653
                                                                                                                     ------------
                    Investment loss--net ...........................................................                   (1,260,127)
                                                                                                                     ------------
=================================================================================================================================
Realized &          Realized loss from the Portfolio--net ..........................................                  (12,630,179)
Unrealized Gain     Change in unrealized appreciation/depreciation on investments from the
(Loss) from the     Portfolio--net .................................................................                   10,943,833
Portfolio--Net:                                                                                                      ------------
                    Total realized and unrealized loss from the Portfolio--net .....................                   (1,686,346)
                                                                                                                     ------------
                    Net Decrease in Net Assets Resulting from Operations ...........................                  $(2,946,473)
                                                                                                                     ============
=================================================================================================================================


      See Notes to Financial Statements.


                                      6 & 7


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

STATEMENTS OF CHANGES IN NET ASSETS



                                                                                                     For the Six       For the
MERRILL LYNCH                                                                                        Months Ended     Year Ended
LARGE CAP                                                                                              April 30,     October 31,
GROWTH FUND         Increase (Decrease) in Net Assets:                                                   2003            2002
=================================================================================================================================
                                                                                                            
Operations:         Investment loss--net ........................................................... $ (1,260,127)   $ (2,494,722)
                    Realized loss on investments from the Portfolio--net ...........................  (12,630,179)    (42,414,061)
                    Change in unrealized appreciation/depreciation on investments from the
                    Portfolio--net .................................................................   10,943,833       8,543,095
                                                                                                     ------------    ------------
                    Net decrease in net assets resulting from operations ...........................   (2,946,473)    (36,365,688)
                                                                                                     ------------    ------------
=================================================================================================================================
Capital Share       Net increase in net assets derived from capital share transactions .............   10,111,909      73,087,011
Transactions:                                                                                        ------------    ------------
=================================================================================================================================
Net Assets:         Total increase in net assets ...................................................    7,165,436      36,721,323
                    Beginning of period ............................................................  184,460,707     147,739,384
                                                                                                     ------------    ------------
                    End of period* ................................................................. $191,626,143    $184,460,707
                                                                                                     ============    ============
=================================================================================================================================
                   *Accumulated investment loss--net ............................................... $ (1,260,127)             --
                                                                                                     ============    ============
=================================================================================================================================


      See Notes to Financial Statements.

FINANCIAL HIGHLIGHTS



                                                                                                     Class A+++
                                                                                 ------------------------------------------------
                                                                                                                          For the
                                                                                 For the                                  Period
                    The following per share data and ratios have been derived   Six Months       For the Year Ended       Dec. 22,
MERRILL LYNCH       from information provided in the financial statements.        Ended              October 31,         1999+ to
LARGE CAP                                                                        April 30,     ---------------------      Oct. 31,
GROWTH FUND         Increase (Decrease) in Net Asset Value:                        2003          2002          2001         2000
=================================================================================================================================
                                                                                                           
Per Share           Net asset value, beginning of period ....................... $  6.39       $  7.47       $ 11.32      $ 10.00
Operating                                                                        -------       -------       -------      -------
Performance:        Investment loss--net .......................................    (.03)@@@      (.06)@@@      (.07)@@@     (.01)
                    Realized and unrealized gain (loss) on investments from the
                    Portfolio--net .............................................    (.05)        (1.02)        (3.78)        1.33
                                                                                 -------       -------       -------      -------
                    Total from investment operations ...........................    (.08)        (1.08)        (3.85)        1.32
                                                                                 -------       -------       -------      -------
                    Less distributions in excess of realized gain on investments
                    from the Portfolio--net ....................................      --            --            --@@         --
                                                                                 -------       -------       -------      -------
                    Net asset value, end of period ............................. $  6.31       $  6.39       $  7.47      $ 11.32
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Total Investment    Based on net asset value per share .........................   (1.25%)@     (14.46%)      (33.98%)      13.20%@
Return:**                                                                        =======       =======       =======      =======
=================================================================================================================================
Ratios to Average   Expenses, net of reimbursement++ ...........................    1.52%*        1.54%         1.38%        1.74%*
Net Assets:                                                                      =======       =======       =======      =======
                    Expenses++ .................................................    1.52%*        1.56%         1.38%        3.94%*
                                                                                 =======       =======       =======      =======
                    Investment loss--net .......................................    (.86%)*       (.88%)        (.90%)      (1.14%)*
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Supplemental        Net assets, end of period (in thousands) ................... $18,116       $15,874       $15,032      $ 7,540
Data:                                                                            =======       =======       =======      =======
                    Portfolio turnover .........................................   90.28%       177.46%       230.34%       94.75%
                                                                                 =======       =======       =======      =======
=================================================================================================================================


                                                                                                      Class B
                                                                                 ------------------------------------------------
                                                                                                                          For the
                                                                                 For the                                  Period
                    The following per share data and ratios have been derived   Six Months       For the Year Ended       Dec. 22,
                    from information provided in the financial statements.        Ended              October 31,         1999+ to
                                                                                 April 30,     ---------------------      Oct. 31,
                    Increase (Decrease) in Net Asset Value:                        2003          2002          2001         2000
=================================================================================================================================
                                                                                                           
Per Share           Net asset value, beginning of period ....................... $  6.25       $  7.37       $ 11.26      $ 10.00
Operating                                                                        -------       -------       -------      -------
Performance:        Investment loss--net .......................................    (.05)@@@      (.12)@@@      (.14)@@@     (.01)
                    Realized and unrealized gain (loss) on investments from the
                    Portfolio--net .............................................    (.05)        (1.00)        (3.75)        1.27
                                                                                 -------       -------       -------      -------
                    Total from investment operations ...........................    (.10)        (1.12)        (3.89)        1.26
                                                                                 -------       -------       -------      -------
                    Less distributions in excess of realized gain on investments
                    from the Portfolio--net ....................................      --            --            --@@         --
                                                                                 -------       -------       -------      -------
                    Net asset value, end of period ............................. $  6.15       $  6.25       $  7.37      $ 11.26
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Total Investment    Based on net asset value per share .........................   (1.60%)@     (15.20%)      (34.54%)      12.60%@
Return:**                                                                        =======       =======       =======      =======
=================================================================================================================================
Ratios to Average   Expenses, net of reimbursement++ ...........................    2.32%*        2.32%         2.17%        2.56%*
Net Assets:                                                                      =======       =======       =======      =======
                    Expenses++ .................................................    2.32%*        2.34%         2.17%        4.14%*
                                                                                 =======       =======       =======      =======
                    Investment loss--net .......................................   (1.65%)*      (1.66%)       (1.67%)      (1.82%)*
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Supplemental        Net assets, end of period (in thousands) ................... $82,377       $83,726       $70,428      $47,370
Data:                                                                            =======       =======       =======      =======
                    Portfolio turnover .........................................   90.28%       177.46%       230.34%       12.60%
                                                                                 =======       =======       =======      =======
=================================================================================================================================


*     Annualized.
**    Total investment returns exclude the effects of sales charges.
+     Commencement of operations.
++    Includes the Fund's share of the Portfolio's allocated expenses.
+++   Effective April 14, 2003, Class D Shares were redesignated Class A Shares.
@     Aggregate total investment return.
@@    Amount is less than $(.01) per share.
@@@   Based on average shares outstanding.

      See Notes to Financial Statements.


                                      8 & 9


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

FINANCIAL HIGHLIGHTS (concluded)



                                                                                                      Class C
                                                                                -------------------------------------------------
                                                                                                                          For the
                                                                                 For the                                  Period
                    The following per share data and ratios have been derived   Six Months       For the Year Ended       Dec. 22,
MERRILL LYNCH       from information provided in the financial statements.        Ended              October 31,         1999+ to
LARGE CAP                                                                        April 30,     ---------------------      Oct. 31,
GROWTH FUND         Increase (Decrease) in Net Asset Value:                        2003          2002          2001         2000
=================================================================================================================================
                                                                                                           
Per Share           Net asset value, beginning of period ....................... $  6.25       $  7.36       $ 11.25      $ 10.00
Operating                                                                        -------       -------       -------      -------
Performance:        Investment loss--net .......................................    (.05)@@@      (.12)@@@      (.14)@@@     (.01)
                    Realized and unrealized gain (loss) on investments from the
                    Portfolio--net .............................................    (.05)         (.99)        (3.75)        1.26
                                                                                 -------       -------       -------      -------
                    Total from investment operations ...........................    (.10)        (1.11)        (3.89)        1.25
                                                                                 -------       -------       -------      -------
                    Less distributions in excess of realized gain on investments
                    from the Portfolio--net ....................................      --            --            --@@         --
                                                                                 -------       -------       -------      -------
                    Net asset value, end of period ............................. $  6.15       $  6.25       $  7.36      $ 11.25
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Total Investment    Based on net asset value per share .........................   (1.60%)@     (15.08%)      (34.56%)      12.50%@
Return:**                                                                        =======       =======       =======      =======
=================================================================================================================================
Ratios to Average   Expenses, net of reimbursement++ ...........................    2.32%*        2.33%         2.17%        2.56%*
Net Assets:                                                                      =======       =======       =======      =======
                    Expenses++ .................................................    2.32%*        2.35%         2.17%        4.16%*
                                                                                 =======       =======       =======      =======
                    Investment loss--net .......................................   (1.66%)*      (1.67%)       (1.68%)      (1.83%)*
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Supplemental        Net assets, end of period (in thousands) ................... $54,306       $52,872       $39,167      $23,736
Data:                                                                            =======       =======       =======      =======
                    Portfolio turnover .........................................   90.28%       177.46%       230.34%       94.75%
                                                                                 =======       =======       =======      =======
=================================================================================================================================


                                                                                                    Class I++++
                                                                                -------------------------------------------------
                                                                                                                          For the
                                                                                 For the                                  Period
                    The following per share data and ratios have been derived   Six Months       For the Year Ended       Dec. 22,
                    from information provided in the financial statements.        Ended              October 31,         1999+ to
                                                                                 April 30,     ---------------------      Oct. 31,
                    Increase (Decrease) in Net Asset Value:                        2003          2002          2001         2000
=================================================================================================================================
                                                                                                           
Per Share           Net asset value, beginning of period ....................... $  6.44       $  7.50       $ 11.35      $ 10.00
Operating                                                                        -------       -------       -------      -------
Performance:        Investment loss--net .......................................    (.02)@@@      (.05)@@@      (.06)@@@     (.02)
                    Realized and unrealized gain (loss) on investments from the
                    Portfolio--net .............................................    (.05)        (1.01)        (3.78)        1.37
                                                                                 -------       -------       -------      -------
                    Total from investment operations ...........................    (.07)        (1.06)        (3.84)        1.35
                                                                                 -------       -------       -------      -------
                    Less distributions in excess of realized gain on investments
                    from the Portfolio--net ....................................      --            --          (.01)          --
                                                                                 -------       -------       -------      -------
                    Net asset value, end of period ............................. $  6.37       $  6.44       $  7.50      $ 11.35
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Total Investment    Based on net asset value per share .........................   (1.09%)@     (14.13%)      (33.89%)      13.50%@
Return:**                                                                        =======       =======       =======      =======
=================================================================================================================================
Ratios to Average   Expenses, net of reimbursement++ ...........................    1.27%*        1.29%         1.14%        1.38%*
Net Assets:                                                                      =======       =======       =======      =======
                    Expenses++ .................................................    1.27%*        1.31%         1.14%        4.77%*
                                                                                 =======       =======       =======      =======
                    Investment loss--net .......................................    (.61%)*       (.63%)        (.65%)      (1.04%)*
                                                                                 =======       =======       =======      =======
=================================================================================================================================
Supplemental        Net assets, end of period (in thousands) ................... $36,827       $31,989       $23,112      $18,859
Data:                                                                            =======       =======       =======      =======
                    Portfolio turnover .........................................   90.28%       177.46%       230.34%       94.75%
                                                                                 =======       =======       =======      =======
=================================================================================================================================


                                                                                                                        Class R
                                                                                                                      -----------
                                                                                                                        For the
                                                                                                                         Period
                    The following per share data and ratios have been derived                                          January 3,
                    from information provided in the financial statements.                                              2003+ to
                                                                                                                        April 30,
                    Increase (Decrease) in Net Asset Value:                                                               2003
=================================================================================================================================
                                                                                                                
Per Share           Net asset value, beginning of period ............................................................ $      6.22
Operating                                                                                                             -----------
Performance:        Investment loss--net@@@ .........................................................................          --@@
                    Realized and unrealized loss on investments from the Portfolio--net .............................        (.04)
                                                                                                                      -----------
                    Total from investment operations ................................................................        (.04)
                                                                                                                      -----------
                    Net asset value, end of period .................................................................. $      6.18
                                                                                                                      ===========
=================================================================================================================================
Total Investment    Based on net asset value per share ..............................................................         .32%@
Return:**                                                                                                             ===========
=================================================================================================================================
Ratios to Average   Expenses++ ......................................................................................        1.75%*
Net Assets:                                                                                                           ===========
                    Investment loss--net ............................................................................       (1.13%)*
                                                                                                                      ===========
=================================================================================================================================
Supplemental        Net assets, end of period (in thousands) ........................................................          --+++
Data:                                                                                                                 ===========
                    Portfolio turnover ..............................................................................       90.28%
                                                                                                                      ===========
=================================================================================================================================


*     Annualized.
**    Total investment returns exclude the effects of sales charges.
+     Commencement of operations.
++    Includes the Fund's share of the Portfolio's allocated expenses.
+++   Amount is less than $1,000.
++++  Effective April 14, 2003, Class A Shares were redesignated Class I Shares.
@     Aggregate total investment return.
@@    Amount is less than $(.01) per share.
@@@   Based on average shares outstanding.

      See Notes to Financial Statements.


                                     10 & 11


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

NOTES TO FINANCIAL STATEMENTS

MERRILL LYNCH
LARGE CAP
GROWTH FUND

1. Significant Accounting Policies:

Merrill Lynch Large Cap Growth Fund of Merrill Lynch Large Cap Series Funds,
Inc. (the "Fund") is registered under the Investment Company Act of 1940 as a
diversified mutual fund. The Fund seeks to achieve its investment objective by
investing all of its assets in the Master Large Cap Growth Portfolio (the
"Portfolio"), which is a portfolio of Master Large Cap Series Trust that has the
same investment objective as the Fund. The value of the Fund's investment in the
Portfolio reflects the Fund's proportionate interest in the net assets of the
Portfolio. The performance of the Fund is directly affected by the performance
of the Portfolio. The financial statements of the Portfolio, including the
Schedule of Investments, are included elsewhere in this report and should be
read in conjunction with the Fund's financial statements. The Fund's financial
statements are prepared in conformity with accounting principles generally
accepted in the United States of America, which may require the use of
management accruals and estimates. These unaudited financial statements reflect
all adjustments, which are, in the opinion of management, necessary to a fair
statement of the results for the interim period presented. All such adjustments
are of a normal, recurring nature. The percentage of the Portfolio owned by the
Fund at April 30, 2003 was 100%. The Fund offers multiple classes of shares.
Effective April 14, 2003, Class A Shares were redesignated Class I Shares and
Class D Shares were redesignated Class A Shares. The Fund's financial statements
and financial highlights contained within this report reflect the new share
class redesignation. Shares of Class A and Class I are sold with a front-end
sales charge. Shares of Class B and Class C may be subject to a contingent
deferred sales charge. Class R Shares are sold only to certain retirement plans.
All classes of shares have identical voting, dividend, liquidation and other
rights and the same terms and conditions, except that Class A, Class B, Class C
and Class R Shares bear certain expenses related to the account maintenance of
such shares, and Class B, Class C and Class R Shares also bear certain expenses
related to the distribution of such shares. Each class has exclusive voting
rights with respect to matters relating to its account maintenance and
distribution expenditures. Income, expenses (other than expenses attributable to
a specific class) and realized and unrealized gains and losses on investments
are allocated daily to each class based on its relative net assets. The
following is a summary of significant accounting policies followed by the Fund.

(a) Valuation of investments -- The Fund records its investment in the Portfolio
at fair value. Valuation of securities held by the Portfolio is discussed in
Note 1a of the Portfolio's Notes to Financial Statements, which are included
elsewhere in this report.

(b) Investment income and expenses -- The Fund records daily its proportionate
share of the Portfolio's income, expenses and realized and unrealized gains and
losses. In addition, the Fund accrues its own expenses.

(c) Income taxes -- It is the Fund's policy to comply with the requirements of
the Internal Revenue Code applicable to regulated investment companies and to
distribute substantially all of its taxable income to shareholders. Therefore,
no Federal income tax provision is required. Under the applicable foreign tax
law, a withholding tax may be imposed on interest, dividends and capital gains
at various rates.

(d) Prepaid registration fees -- Prepaid registration fees are charged to
expenses as the related shares are issued.

(e) Dividends and distributions -- Dividends and distributions paid by the Fund
are recorded on the ex-dividend dates.

(f) Investment transactions -- Investment transactions in the Portfolio are
accounted for on a trade date basis.

2. Transactions with Affiliates:

The Fund has entered into an Administration Agreement with Fund Asset
Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc.
("PSI"), a wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML & Co."),
which is the limited partner. The Fund pays a monthly fee at an annual rate of
..25% of the Fund's average daily net assets for the performance of
administrative services (other than investment advice and related portfolio
activities) necessary for the operation of the Fund.

The Fund has entered into a Distribution Agreement and Distribution Plans with
FAM Distributors, Inc. ("FAMD" or the "Distributor"), which is a wholly-owned
subsidiary of Merrill Lynch Group, Inc. Pursuant to the Distribution Plans
adopted by the Fund in accordance with Rule 12b-1 under the Investment Company
Act of 1940, the Fund pays the Distributor ongoing account maintenance and
distribution fees. The fees are accrued daily and paid monthly at annual rates
based upon the average daily net assets of the shares as follows:

- --------------------------------------------------------------------------------
                                                   Account          Distribution
                                               Maintenance Fee          Fee
- --------------------------------------------------------------------------------
Class A ......................................      .25%                 --
Class B ......................................      .25%                .75%
Class C ......................................      .25%                .75%
Class R ......................................      .25%                .25%
- --------------------------------------------------------------------------------

Pursuant to a sub-agreement with the Distributor, Merrill Lynch, Pierce, Fenner
& Smith Incorporated ("MLPF&S"), a subsidiary of ML & Co., also provides account
maintenance and distribution services to the Fund. The ongoing account
maintenance fee compensates the Distributor and MLPF&S for providing account
maintenance services to Class A, Class B, Class C and Class R shareholders. The
ongoing distribution fee compensates the Distributor and MLPF&S for providing
shareholder and distribution-related services to Class B, Class C and Class R
shareholders.

For the six months ended April 30, 2003, FAMD earned underwriting discounts and
MLPF&S earned dealer concessions on sales of the Fund's Class A and Class I
Shares as follows:

- --------------------------------------------------------------------------------
                                                    FAMD               MLPF&S
- --------------------------------------------------------------------------------
Class A .......................................... $1,618             $22,722
Class I .......................................... $    3             $    69
- --------------------------------------------------------------------------------

For the six months ended April 30, 2003, MLPF&S received contingent deferred
sales charges of $122,749 and $8,104 relating to transactions in Class B and
Class C Shares, respectively. Furthermore, MLPF&S received contingent deferred
sales charges of $443 relating to transactions subject to front-end sales charge
waivers in Class A Shares.

Financial Data Services, Inc. ("FDS"), an indirect, wholly-owned subsidiary of
ML & Co., is the Fund's transfer agent.

Certain officers and/or directors of the Fund are officers and/or directors of
FAM, FAMD, FDS, and/or ML & Co.

3. Capital Share Transactions:

Net increase in net assets derived from capital share transactions was
$10,111,909 and $73,087,011 for the six


                                     12 & 13


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

NOTES TO FINANCIAL STATEMENTS (concluded)

MERRILL LYNCH
LARGE CAP
GROWTH FUND

months ended April 30, 2003 and for the year ended October 31, 2002,
respectively.

Transactions in capital shares for each class were as follows:

- -------------------------------------------------------------------------------
Class A Shares for the Six Months                                     Dollar
Ended April 30, 2003+                                Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................      988,682     $  6,055,536
Shares issued resulting from
reorganization ..................................       24,369          150,353
Automatic conversion of shares ..................        5,255           31,405
                                                  ------------     ------------
Total issued ....................................    1,018,306        6,237,294
Shares redeemed .................................     (632,521)      (3,820,248)
                                                  ------------     ------------
Net increase ....................................      385,785     $  2,417,046
                                                  ============     ============
- -------------------------------------------------------------------------------

+     Effective April 14, 2003, Class D Shares were redesignated Class A Shares.

- -------------------------------------------------------------------------------
Class A Shares for the Year                                           Dollar
Ended October 31, 2002+                              Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    1,021,591     $  7,623,601
Automatic conversion of shares ..................        7,612           49,465
Shares issued resulting from
reorganization ..................................      804,357        6,401,055
                                                  ------------     ------------
Total issued ....................................    1,833,560       14,074,121
Shares redeemed .................................   (1,361,857)     (10,218,363)
                                                  ------------     ------------
Net increase ....................................      471,703     $  3,855,758
                                                  ============     ============
- -------------------------------------------------------------------------------

+     Effective April 14, 2003, Class D Shares were redesignated Class A Shares.

- -------------------------------------------------------------------------------
Class B Shares for the Six Months                                     Dollar
Ended April 30, 2003                                 Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    2,004,581     $ 12,069,717
Shares issued resulting from
reorganization ..................................      124,168          747,186
                                                  ------------     ------------
Total issued ....................................    2,128,749       12,816,903
Automatic conversion of shares ..................       (5,375)         (31,405)
Shares redeemed .................................   (2,123,938)     (12,646,404)
                                                  ------------     ------------
Net increase (decrease) .........................         (564)    $    139,094
                                                  ============     ============
- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------
Class B Shares for the Year                                           Dollar
Ended October 31, 2002                               Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    3,047,843     $ 22,377,404
Shares issued resulting from
reorganization ..................................    4,777,855       37,364,799
                                                  ------------     ------------
Total issued ....................................    7,825,698       59,742,203
Automatic conversion of shares ..................       (7,768)         (49,465)
Shares redeemed .................................   (3,990,164)     (28,246,200)
                                                  ------------     ------------
Net increase ....................................    3,827,766     $ 31,446,538
                                                  ============     ============
- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------
Class C Shares for the Six Months                                     Dollar
Ended April 30, 2003                                 Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    2,110,747     $ 12,745,670
Shares issued resulting from
reorganization ..................................        8,965           53,892
                                                  ------------     ------------
Total issued ....................................    2,119,712       12,799,562
Shares redeemed .................................   (1,748,254)     (10,368,051)
                                                  ------------     ------------
Net increase ....................................      371,458     $  2,431,511
                                                  ============     ============
- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------
Class C Shares for the Year                                           Dollar
Ended October 31, 2002                               Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    3,628,500     $ 26,208,645
Shares issued resulting from
reorganization ..................................    1,863,344       14,556,969
                                                  ------------     ------------
Total issued ....................................    5,491,844       40,765,614
Shares redeemed .................................   (2,350,676)     (16,661,556)
                                                  ------------     ------------
Net increase ....................................    3,141,168     $ 24,104,058
                                                  ============     ============
- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------
Class I Shares for the Six Months                                     Dollar
Ended April 30, 2003+                                Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    1,855,881     $ 11,516,484
Shares issued resulting from
reorganization ..................................           15               91
                                                  ------------     ------------
Total issued ....................................    1,855,896       11,516,575
Shares redeemed .................................   (1,041,128)      (6,392,417)
                                                  ------------     ------------
Net increase ....................................      814,768     $  5,124,158
                                                  ============     ============
- -------------------------------------------------------------------------------

+     Effective April 14, 2003, Class A Shares were redesignated Class I Shares.

- -------------------------------------------------------------------------------
Class I Shares for the Year                                           Dollar
Ended October 31, 2002+                              Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................    3,448,055     $ 24,731,251
Shares issued resulting from
reorganization ..................................      263,556        2,111,025
                                                  ------------     ------------
Total issued ....................................    3,711,611       26,842,276
Shares redeemed .................................   (1,821,751)     (13,161,619)
                                                  ------------     ------------
Net increase ....................................    1,889,860     $ 13,680,657
                                                  ============     ============
- -------------------------------------------------------------------------------

+     Effective April 14, 2003, Class A Shares were redesignated Class I Shares.

- -------------------------------------------------------------------------------
Class R Shares for the Period                                         Dollar
January 3, 2003+ to April 30, 2003                   Shares           Amount
- -------------------------------------------------------------------------------
Shares sold .....................................           16     $        100
                                                  ------------     ------------
Net increase ....................................           16     $        100
                                                  ============     ============
- -------------------------------------------------------------------------------

+     Commencement of operations.

4. Capital Loss Carryforward:

On October 31, 2002, the Fund had a net capital loss carryforward of
$115,417,836, of which $14,236,325 expires in 2007, $2,798,384 expires in 2008,
$57,976,637 expires in 2009 and $40,406,490 expires in 2010. This amount will be
available to offset like amounts of any future taxable gains.

5. Acquisition of Mercury Large Cap Growth Fund:

On April 28, 2003, the Fund acquired all of the net assets of Mercury Large Cap
Growth Fund pursuant to a plan of reorganization. The acquisition was
accomplished by a tax-free exchange of 175,250 shares of Common Stock of Mercury
Large Cap Growth Fund for 157,517 shares of Common Stock of the Fund. Mercury
Large Cap Growth Fund's net assets on that date of $951,522, including $40,979
of net unrealized appreciation and $507,766 of accumulated net realized capital
losses, were combined with those of the Fund. The aggregate net assets
immediately after the acquisition amounted to $186,894,450.


                                     14 & 15


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

SCHEDULE OF INVESTMENTS                                        (in U.S. dollars)



                   Master Large Cap Growth Portfolio
                   -----------------------------------------------------------------------------------------------------------------
                                                                                                                             Percent
                                                      Shares                                                                  of Net
SECTOR             Industry*                           Held                     Common Stocks                      Value      Assets
====================================================================================================================================
                                                                                                               
Consumer           Hotels, Restaurants & Leisure        68,000   Applebee's International, Inc.                $  1,863,200     1.0%
Discretionary                                           59,000  +GTECH Holdings Corporation                       1,986,530     1.0
                                                        27,000  +International Game Technology                    2,330,100     1.2
                                                        65,000  +Mandalay Resort Group                            1,717,300     0.9
                   -----------------------------------------------------------------------------------------------------------------
                   Household Durables                   35,200   D.R. Horton, Inc.                                  834,240     0.4
                                                         6,000  +NVR, Inc.                                        2,146,500     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Internet & Catalog Retail            27,000  +eBay Inc.                                        2,504,790     1.3
                   -----------------------------------------------------------------------------------------------------------------
                   Leisure Equipment & Products        106,000   Mattel, Inc.                                     2,304,440     1.2
                   -----------------------------------------------------------------------------------------------------------------
                   Multiline Retail                     49,000   Wal-Mart Stores, Inc.                            2,759,680     1.5
                   -----------------------------------------------------------------------------------------------------------------
                   Specialty Retail                     63,000  +Abercrombie & Fitch Co. (Class A)                2,071,440     1.1
                                                        87,000  +AutoNation, Inc.                                 1,204,950     0.6
                                                        83,000  +Chico's FAS, Inc.                                2,020,220     1.1
                                                       138,000   The Gap, Inc.                                    2,294,940     1.2
                                                       120,000  +Staples, Inc.                                    2,284,800     1.2
                   -----------------------------------------------------------------------------------------------------------------
                   Textiles, Apparel &                  53,000  +Coach, Inc.                                      2,306,030     1.2
                   Luxury Goods                         39,000  +The Timberland Company (Class A)                 1,949,610     1.0
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Consumer Discretionary
                                                                 (Cost--$27,679,250)                             32,578,770    17.0
====================================================================================================================================
Consumer Staples   Beverages                            99,000   Coca-Cola Enterprises Inc.                       1,929,510     1.0
                                                        75,000  +Constellation Brands, Inc. (Class A)             2,010,750     1.0
                   -----------------------------------------------------------------------------------------------------------------
                   Food & Staples Retailing             34,000  +Whole Foods Market, Inc.                         2,018,240     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Food Products                        49,000   General Mills, Inc.                              2,210,390     1.2
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Consumer Staples (Cost--$7,397,380)        8,168,890     4.3
====================================================================================================================================
Energy             Gas Utilities                        44,000   Kinder Morgan, Inc.                              2,068,880     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Oil & Gas                            50,000   Pogo Producing Company                           1,980,000     1.0
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Energy (Cost--$3,750,424)                  4,048,880     2.1
====================================================================================================================================
Financials         Commercial Banks                     60,000   Hudson United Bancorp                            2,000,400     1.0
                                                        58,000   New York Community Bancorp, Inc.                 2,013,760     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Diversified Financial Services       69,000   Fannie Mae                                       4,994,910     2.6
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Financials (Cost--$7,891,017)              9,009,070     4.7
====================================================================================================================================
Health Care        Biotechnology                        10,000  +Amgen Inc.                                         613,100     0.3
                                                        65,000  +Invitrogen Corporation                           2,125,500     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Health Care                         150,000  +Cytyc Corporation                                1,980,000     1.0
                   Equipment & Supplies                 12,000   DENTSPLY International Inc.                        449,400     0.2
                                                        66,000  +Fisher Scientific International Inc.             1,901,460     1.0
                                                        92,000  +STERIS Corporation                               2,088,400     1.1
                                                        45,000  +St. Jude Medical, Inc.                           2,360,700     1.2
                                                        34,000   Stryker Corporation                              2,278,340     1.2
                                                        39,000  +Varian Medical Systems, Inc.                     2,100,540     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Health Care                          75,000  +AdvancePCS                                       2,254,500     1.2
                   Providers & Services                 86,000  +DaVita, Inc.                                     1,773,320     0.9
                                                        70,000   Omnicare, Inc.                                   1,856,400     1.0
                                                        32,000  +WellPoint Health Networks Inc.                   2,430,080     1.3
                   -----------------------------------------------------------------------------------------------------------------
                   Pharmaceuticals                      32,000  +Barr Laboratories, Inc.                          1,779,200     0.9
                                                        46,000  +Forest Laboratories, Inc.                        2,379,120     1.3
                                                        67,000   Johnson & Johnson                                3,776,120     2.0
                                                        62,000  +King Pharmaceuticals, Inc.                         781,820     0.4
                                                        36,000  +Medicis Pharmaceutical (Class A)                 2,075,040     1.1
                                                        92,000   Merck & Co., Inc.                                5,352,560     2.8
                                                       227,000   Pfizer Inc.                                      6,980,250     3.6
                                                        68,000  +Watson Pharmaceuticals, Inc.                     1,976,760     1.0
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Health Care (Cost--$46,989,909)           49,312,610    25.7
====================================================================================================================================
Industrials        Air Freight & Logistics              53,000   Expeditors International of Washington, Inc.     1,927,027     1.0
                   -----------------------------------------------------------------------------------------------------------------
                   Commercial Services &                40,000  +Apollo Group, Inc. (Class A)                     2,167,960     1.1
                   Supplies                             18,000  +Career Education Corporation                     1,082,340     0.6
                                                        76,000  +CheckFree Corp.                                  2,095,320     1.1
                                                        86,000   First Data Corporation                           3,373,780     1.8
                                                        50,000   H&R Block, Inc.                                  1,931,000     1.0
                                                        49,000  +Iron Mountain Incorporated                       1,952,650     1.0
                   -----------------------------------------------------------------------------------------------------------------
                   Construction & Engineering           29,000  +Jacobs Engineering Group Inc.                    1,193,350     0.6
                   -----------------------------------------------------------------------------------------------------------------
                   Industrial Conglomerates            294,000   General Electric Company                         8,658,300     4.5
                   -----------------------------------------------------------------------------------------------------------------
                   Media                                57,000  +Getty Images, Inc.                               1,929,450     1.0
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Industrials (Cost--$26,068,925)           26,311,177    13.7
====================================================================================================================================



                                     16 & 17


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

SCHEDULE OF INVESTMENTS (concluded)                            (in U.S. dollars)



                   Master Large Cap Growth Portfolio (concluded)
                   -----------------------------------------------------------------------------------------------------------------
                                                      Shares
                                                       Held/                                                                 Percent
                                                    Beneficial                                                                of Net
SECTOR             Industry*                         Interest                   Common Stocks                      Value      Assets
====================================================================================================================================
                                                                                                               
Information        Communications                      133,000  +Advanced Fibre Communications, Inc.           $  2,034,900     1.1%
Technology         Equipment                            72,000  +Cisco Systems, Inc.                              1,082,880     0.6
                                                        99,000  +Emulex Corporation                               2,028,510     1.1
                                                        94,000   QUALCOMM Inc.                                    2,997,660     1.6
                                                        96,000  +UTStarcom, Inc.                                  2,090,016     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Computers & Peripherals             159,000  +Dell Computer Corporation                        4,596,690     2.4
                                                        34,000  +Lexmark International Group, Inc. (Class A)      2,533,340     1.3
                                                        84,000  +Storage Technology Corporation                   2,076,480     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Electronic Equipment &              201,000   PerkinElmer, Inc.                                1,993,920     1.0
                   Instruments                         107,000  +Thermo Electron Corporation                      1,944,190     1.0
                   -----------------------------------------------------------------------------------------------------------------
                   IT Services                          44,000  +Affiliated Computer Services, Inc. (Class A)     2,098,800     1.1
                                                       184,000  +Unisys Corporation                               1,913,600     1.0
                   -----------------------------------------------------------------------------------------------------------------
                   Semiconductors &                     88,000   Intel Corporation                                1,619,200     0.8
                   Semiconductor Equipment              48,000  +QLogic Corporation                               2,111,520     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Software                             63,000   Adobe Systems Incorporated                       2,177,280     1.1
                                                       188,000  +BEA Systems, Inc.                                2,013,480     1.1
                                                       129,000  +BMC Software, Inc.                               1,924,680     1.0
                                                        38,000   Fair, Isaac and Company, Incorporated            1,979,040     1.0
                                                       154,000  +Macromedia, Inc.                                 1,941,940     1.0
                                                       254,000   Microsoft Corporation                            6,494,780     3.4
                                                       330,000  +Oracle Corporation                               3,920,400     2.0
                                                        54,000  +Symantec Corporation                             2,373,300     1.2
                                                        43,000  +Synopsys, Inc.                                   2,091,520     1.1
                   -----------------------------------------------------------------------------------------------------------------
                   Wireless Telecommunication          344,000  +AT&T Wireless Services Inc.                      2,222,240     1.2
                   Services                            157,000  +Nextel Communications, Inc. (Class A)            2,322,030     1.2
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Information Technology
                                                                 (Cost--$57,624,123)                             60,582,396    31.6
====================================================================================================================================
Materials          Containers & Packaging               32,000   Ball Corporation                                 1,797,120     0.9
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Materials (Cost--$1,330,994)               1,797,120     0.9
====================================================================================================================================
                                                                 Total Common Stocks (Cost--$178,732,022)       191,808,913   100.0
====================================================================================================================================

                                                                            Short-Term Securities
====================================================================================================================================
                                                    $  489,066   Merrill Lynch Liquidity Series, LLC Cash
                                                                 Sweep Series I (a)                                 489,066     0.2
                                                    $9,664,201   Merrill Lynch Liquidity Series, LLC Money
                                                                 Market Series (a)(b)                             9,664,201     5.0
                                                     6,442,799   Merrill Lynch Premier Institutional Fund
                                                                 (a)(b)                                           6,442,799     3.4
                   -----------------------------------------------------------------------------------------------------------------
                                                                 Total Short-Term Securities
                                                                 (Cost--$16,596,066)                             16,596,066     8.6
====================================================================================================================================
                   Total Investments
                   (Cost--$195,328,088)                                                                         208,404,979   108.6

                   Liabilities in Excess
                   of Other Assets                                                                              (16,522,381)   (8.6)
                                                                                                               ------------   -----
                   Net Assets                                                                                  $191,882,598   100.0%
                                                                                                               ============   =====
====================================================================================================================================


*     For Portfolio compliance purposes, "Industry" means any one or more of the
      industry sub-classifications used by one or more widely recognized market
      indexes or ratings group indexes, and/or as defined by Portfolio
      management. This definition may not apply for purposes of this report,
      which may combine such industry sub-classifications for reporting ease.
+     Non-income producing security.
(a)   Investments in companies considered to be an affiliate of the Portfolio
      (such companies are defined as "Affiliated Companies" in Section 2(a)(3)
      of the Investment Company Act of 1940) are as follows:

- --------------------------------------------------------------------------------
                                                                       Dividend/
                                                          Net          Interest
Affiliate                                              Activity         Income
- --------------------------------------------------------------------------------
Merrill Lynch Liquidity Series, LLC
  Cash Sweep Series I                                 $  489,066        $1,716
Merrill Lynch Liquidity Series, LLC
  Money Market Series                                 $9,664,201         5,104
Merrill Lynch Premier Institutional Fund               6,442,799         4,447
- --------------------------------------------------------------------------------

(b)   Security was purchased with the cash proceeds from securities loans.

      See Notes to Financial Statements.


                                     18 & 19


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

STATEMENT OF ASSETS AND LIABILITIES



MASTER LARGE CAP
GROWTH PORTFOLIO    As of April 30, 2003
=================================================================================================================================
                                                                                                            
Assets:             Investments, at value (including securities loaned of $15,700,468) (identified
                    cost--$195,328,088) ............................................................                 $208,404,979
                    Receivables:
                      Securities sold .............................................................. $  7,029,176
                      Contributions ................................................................      362,016
                      Dividends ....................................................................       40,385
                      Securities lending--net ......................................................          800
                      Interest .....................................................................          383       7,432,760
                                                                                                     ------------
                    Prepaid expenses and other assets ..............................................                       43,571
                                                                                                                     ------------
                    Total assets ...................................................................                  215,881,310
                                                                                                                     ------------
=================================================================================================================================
Liabilities:        Collateral on securities loaned, at value ......................................                   16,107,000
                    Payables:
                      Securities purchased .........................................................    7,475,685
                      Withdrawals ..................................................................      297,212
                      Investment adviser ...........................................................       83,580
                      Other affiliates .............................................................        1,376       7,857,853
                                                                                                     ------------
                    Accrued expenses and other liabilities .........................................                       33,859
                                                                                                                     ------------
                    Total liabilities ..............................................................                   23,998,712
                                                                                                                     ------------
=================================================================================================================================
Net Assets:         Net assets .....................................................................                 $191,882,598
                                                                                                                     ============
=================================================================================================================================
Net Assets          Investors' capital .............................................................                 $178,805,707
Consist of:         Unrealized appreciation on investments--net ....................................                   13,076,891
                                                                                                                     ------------
                    Net assets .....................................................................                 $191,882,598
                                                                                                                     ============
=================================================================================================================================


      See Notes to Financial Statements.

STATEMENT OF OPERATIONS



MASTER LARGE CAP
GROWTH PORTFOLIO    For the Six Months Ended April 30, 2003
=================================================================================================================================
                                                                                                            
Investment          Dividends ......................................................................                 $    594,080
Income:             Securities lending--net ........................................................                        9,551
                    Interest .......................................................................                        2,199
                                                                                                                     ------------
                    Total income ...................................................................                      605,830
                                                                                                                     ------------
=================================================================================================================================
Expenses:           Investment advisory fees ....................................................... $    455,480
                    Accounting services ............................................................       72,617
                    Professional fees ..............................................................       19,416
                    Custodian fees .................................................................       13,138
                    Trustees' fees and expenses ....................................................        9,981
                    Printing and shareholder reports ...............................................          509
                    Pricing fees ...................................................................          488
                    Other ..........................................................................        3,549
                                                                                                     ------------
                    Total expenses .................................................................                      575,178
                                                                                                                     ------------
                    Investment income--net .........................................................                       30,652
                                                                                                                     ------------
=================================================================================================================================
Realized &          Realized loss on investments--net ..............................................                  (12,697,285)
Unrealized Gain     Change in unrealized appreciation on investments--net ..........................                   10,978,352
(Loss) On                                                                                                            ------------
Investments--Net:   Total realized and unrealized loss on investments--net .........................                   (1,718,933)
                                                                                                                     ------------
                    Net Decrease in Net Assets Resulting from Operations ...........................                 $ (1,688,281)
                                                                                                                     ============
=================================================================================================================================


      See Notes to Financial Statements.


                                     20 & 21


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

STATEMENTS OF CHANGES IN NET ASSETS



                                                                                                     For the Six        For the
                                                                                                    Months Ended      Year Ended
MASTER LARGE CAP                                                                                      April 30,       October 31,
GROWTH PORTFOLIO    Increase (Decrease) in Net Assets:                                                  2003             2002
=================================================================================================================================
                                                                                                           
Operations:         Investment income (loss)--net ................................................ $      30,652    $     (18,590)
                    Realized loss on investments--net ............................................   (12,697,285)     (42,605,498)
                    Change in unrealized appreciation/depreciation on investments--net ...........    10,978,352        8,545,049
                                                                                                   -------------    -------------
                    Net decrease in net assets resulting from operations .........................    (1,688,281)     (34,079,039)
                                                                                                   -------------    -------------
=================================================================================================================================
Capital             Proceeds from contributions ..................................................    41,999,381       32,816,658
Transactions:       Fair value of net asset contributions ........................................            --       60,433,848
                    Fair value of withdrawals ....................................................   (34,104,603)     (22,146,969)
                                                                                                   -------------    -------------
                    Net increase in net assets derived from capital transactions .................     7,894,778       71,103,537
                                                                                                   -------------    -------------
=================================================================================================================================
Net Assets:         Total increase in net assets .................................................     6,206,497       37,024,498
                    Beginning of period ..........................................................   185,676,101      148,651,603
                                                                                                   -------------    -------------
                    End of period ................................................................ $ 191,882,598    $ 185,676,101
                                                                                                   =============    =============
=================================================================================================================================


      See Notes to Financial Statements.

FINANCIAL HIGHLIGHTS



                                                                                                                         For the
                                                                                For the                                  Period
                                                                               Six Months       For the Year Ended       Dec. 22,
                                                                                 Ended              October 31,         1999+ to
MASTER LARGE CAP    The following ratios have been derived from                 April 30,     ----------------------     Oct. 31,
GROWTH PORTFOLIO    information provided in the financial statements.             2003          2002          2001         2000
=================================================================================================================================
                                                                                                          
Total Investment                                                                    (.43%)@     (13.56%)          --           --
Return:**                                                                       ========      ========      ========     ========
=================================================================================================================================
Ratios to Average   Expenses, net of reimbursement ............................      .63%*         .67%          .73%        1.30%*
Net Assets:                                                                     ========      ========      ========     ========
                    Expenses ..................................................      .63%*         .67%          .73%        1.82%*
                                                                                ========      ========      ========     ========
                    Investment income (loss)--net .............................      .03%*        (.01%)        (.24%)       (.75%)*
                                                                                ========      ========      ========     ========
=================================================================================================================================
Supplemental        Net assets, end of period (in thousands) .................. $191,883      $185,676      $148,652     $ 98,125
Data:                                                                           ========      ========      ========     ========
                    Portfolio turnover ........................................    90.28%       177.46%       230.34%       94.75%
                                                                                ========      ========      ========     ========
=================================================================================================================================


*     Annualized.
**    Total investment return is required to be disclosed for fiscal years
      beginning after December 15, 2000.
+     Commencement of operations.
@     Aggregate total investment return.

      See Notes to Financial Statements.


                                     22 & 23


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

NOTES TO FINANCIAL STATEMENTS

MASTER LARGE CAP
GROWTH PORTFOLIO

1. Significant Accounting Policies:

Master Large Cap Growth Portfolio (the "Portfolio") is part of Master Large Cap
Series Trust (the "Trust"). The Portfolio is registered under the Investment
Company Act of 1940 and is organized as a Delaware statutory trust. The
Declaration of Trust permits the Trustees to issue nontransferable interests in
the Portfolio, subject to certain limitations. The Portfolio's financial
statements are prepared in conformity with accounting principles generally
accepted in the United States of America, which may require the use of
management accruals and estimates. These unaudited financial statements reflect
all adjustments, which are, in the opinion of management, necessary to a fair
statement of the results for the interim period presented. All such adjustments
are of a normal, recurring nature. The following is a summary of significant
accounting policies followed by the Portfolio.

(a) Valuation of investments -- Portfolio securities that are traded on stock
exchanges or Nasdaq National are valued at the last sale price or official
closing price on the exchange on which such securities are traded, as of the
close of business on the day the securities are being valued or, lacking any
sales, at the last available bid price for long positions, and at the last
available ask price for short positions. Securities traded in the
over-the-counter market are valued at the last available bid price prior to the
time of valuation. Portfolio securities that are traded both in the
over-the-counter market and on a stock exchange are valued according to the
broadest and most representative market. Options written or purchased are valued
at the last sale price in the case of exchange-traded options. In the case of
options traded in the over-the-counter market, valuation is the last asked price
(options written) or the last bid price (options purchased). Short-term
securities are valued at amortized cost, which approximates market value. Other
investments, including futures contracts and related options, are stated at
market value. Securities and assets for which market quotations are not readily
available are valued at fair market value, as determined in good faith by or
under the direction of the Trust's Board of Trustees. Occasionally, events
affecting the values of securities and other assets may occur between the times
at which valuations of such securities are determined (that is, close of the
market on which such securities trade) and the close of business on the NYSE. If
events (for example, company announcement, natural disasters, market volatility)
occur during such periods that are expected to materially affect the value for
such securities, those securities may be valued at their fair market value as
determined in good faith by the Trust's Board of Directors or by the investment
adviser using a pricing service and/or procedures approved by the Board of
Directors of the Trust.

(b) Derivative financial instruments -- The Portfolio may engage in various
portfolio investment strategies both to increase the return of the Fund and to
hedge, or protect, its exposure to interest rate movement and movements in the
securities market. Losses may arise due to changes in the value of the contract
or if the counterparty does not perform under the contract.

o Financial futures contracts -- The Portfolio may purchase or sell financial
futures contracts and options on such futures contracts. Upon entering into a
contract, the Portfolio deposits and maintains as collateral such initial margin
as required by the exchange on which the transaction is effected. Pursuant to
the contract, the Portfolio agrees to receive from or pay to the broker an
amount of cash equal to the daily fluctuation in value of the contract. Such
receipts or payments are known as variation margin and are recorded by the
Portfolio as unrealized gains or losses. When the contract is closed, the
Portfolio records a realized gain or loss equal to the difference between the
value of the contract at the time it was opened and the value at the time it was
closed.

o Options -- The Portfolio is authorized to purchase and write call and put
options. When the Portfolio writes an option, an amount equal to the premium
received by the Portfolio is reflected as an asset and an equivalent liability.
The amount of the liability is subsequently marked to market to reflect the
current market value of the option written. When a security is purchased or sold
through an exercise of an option, the related premium paid (or received) is
added to (or deducted from) the basis of the security acquired or deducted from
(or added to) the proceeds of the security sold. When an option expires (or the
Portfolio enters into a closing transaction), the Portfolio realizes a gain or
loss on the option to the extent of the premiums received or paid (or a gain or
loss to the extent that the cost of the closing transaction exceeds the premium
paid or received).

Written and purchased options are non-income producing investments.

o Forward foreign exchange contracts -- The Portfolio is authorized to enter
into forward foreign exchange contracts as a hedge against either specific
transactions or portfolio positions. The contract is marked-to-market daily and
the change in market value is recorded by the Portfolio as an unrealized gain or
loss. When the contract is closed, the Portfolio records 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.

o Foreign currency options and futures -- The Portfolio may also purchase or
sell listed or over-the-counter foreign currency options, foreign currency
futures and related options on foreign currency futures as a short or long hedge
against possible variations in foreign exchange rates. Such transactions may be
effected with respect to hedges on non-US dollar denominated securities owned by
the Portfolio, sold by the Portfolio but not yet delivered, or committed or
anticipated to be purchased by the Portfolio.

(c) Foreign currency transactions -- Transactions denominated in foreign
currencies are recorded at the exchange rate prevailing when recognized. Assets
and liabilities denominated in foreign currencies are valued at the exchange
rate at the end of the period. Foreign currency transactions are the result of
settling (realized) or valuing (unrealized) assets or liabilities expressed in
foreign currencies into U.S. dollars. Realized and unrealized gains or losses
from investments include the effects of foreign exchange rates on investments.

(d) Income taxes -- The Portfolio is considered as a "pass through" entity for
Federal income tax purposes. As such, each investor in the Portfolio is treated
as owner of its proportionate share of the net assets, income, expenses and
realized and unrealized gains and losses of the Portfolio. Therefore, no Federal
income tax provision is required. Under the applicable foreign tax law, a
withholding tax may be imposed on interest, dividends and capital gains at
various rates. It is intended that the Portfolio's assets will be managed so an
investor in the Portfolio can satisfy the requirements of subchapter M of the
Internal Revenue Code.

(e) Security transactions and investment income -- Security transactions are
accounted for on the date the securities are purchased or sold (the trade
dates). Realized gains and losses on security 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 Portfolio has determined the ex-dividend date.
Interest income is recognized on the accrual basis.

(f) Securities lending -- The Portfolio may lend securities to financial
institutions that provide cash or securities issued or guaranteed by the U.S.
government as collateral, which will be maintained at all times 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 Portfolio and any additional required collateral is delivered to the
Portfolio on the next business day. Where the Portfolio receives securities as
collateral for the loaned securities, it collects a fee from the borrower. The
Portfolio typically receives the income on the loaned securities but does not
receive the income on the collateral. Where the Portfolio receives cash
collateral, it may invest such collateral and retain the amount earned on such
investment, net of any amount rebated to the borrower. Loans of securities are
terminable at any time and the borrower, after notice, is required to return
borrowed securities within five business days. The Portfolio may pay reasonable
finder's, lending agent, administrative and custodial fees in connection with
its loans. In the event that the borrower defaults on its obligation to return
borrowed securities because of insolvency or for any other reason, the Portfolio
could experience delays and costs in gaining access to the collateral. The
Portfolio also could suffer a loss where the value of the collateral falls below
the market value of the borrowed securities, in the event of borrower default or
in the event of losses on investments made with cash collateral.


                                     24 & 25


                             Merrill Lynch Large Cap Growth Fund, April 30, 2003

NOTES TO FINANCIAL STATEMENTS (concluded)

MASTER LARGE CAP
GROWTH PORTFOLIO

2. Investment Advisory Agreement and Transactions with Affiliates:

The Trust has entered into an Investment Advisory Agreement with Fund Asset
Management, L.P. ("FAM"). The general partner of FAM is Princeton Services, Inc.
("PSI"), an indirect, wholly-owned subsidiary of Merrill Lynch & Co., Inc. ("ML
& Co."), which is the limited partner.

FAM is responsible for the management of the Portfolio's investments and
provides the necessary personnel, facilities, equipment and certain other
services necessary to the operations of the Portfolio. For such services, the
Portfolio pays a monthly fee at an annual rate of .50% of the average daily
value of the Portfolio's net assets. FAM has entered into a Sub-Advisory
Agreement with Merrill Lynch Asset Management U.K. Limited ("MLAM U.K."), an
affilliate of FAM, pursuant to which MLAM U.K. provides investment advisory
services to FAM with respect to the Portfolio. There is no increase in the
aggregate fees paid by the Portfolio for these services.

The Portfolio has received an exemptive order from the Securities and Exchange
Commission permitting it to lend portfolio securities to Merrill Lynch, Pierce,
Fenner & Smith Incorporated ("MLPF&S"), a subsidiary of ML & Co. or its
affiliates. As of April 30, 2003, the Portfolio lent securities with a value of
$759,400 to MLPF&S or its affiliates. Pursuant to that order, the Portfolio also
has retained Merrill Lynch Investment Managers, LLC ("MLIM, LLC"), an affiliate
of FAM, as the securities lending agent for a fee based on a share of the
returns on investment of cash collateral. MLIM, LLC may, on behalf of the
Portfolio, invest cash collateral received by the Portfolio for such loans,
among other things, in a private investment company managed by MLIM, LLC or in
registered money market funds advised by FAM or its affiliates. For the six
months ended April 30, 2003, MLIM, LLC received $4,136 in securities lending
agent fees.

For the six months ended April 30, 2003, the Portfolio reimbursed FAM $1,937 for
certain accounting services.

Certain officers and/or trustees of the Trust are officers and/or directors of
FAM, PSI, MLAM U.K. and/or ML & Co.

3. Investments:

Purchases and sales of investments, excluding short-term securities, for the six
months ended April 30, 2003 were $174,280,193 and $166,323,351, respectively.

Net realized losses for the six months ended April 30, 2003 and net unrealized
gains as of April 30, 2003 were as follows:

- -------------------------------------------------------------------------------
                                                    Realized        Unrealized
                                                     Losses            Gains
- -------------------------------------------------------------------------------
Long-term investments ........................... $(12,697,285)    $ 13,076,891
                                                  ------------     ------------
Total ........................................... $(12,697,285)    $ 13,076,891
                                                  ============     ============
- -------------------------------------------------------------------------------

As of April 30, 2003, net unrealized appreciation for Federal income tax
purposes aggregated $8,016,679, of which $18,615,383 related to appreciated
securities and $10,598,704 related to depreciated securities. At April 30, 2003,
the aggregate cost of investments for Federal income tax purposes was
$200,388,300.

4. Short-Term Borrowings:

The Portfolio, along with certain other funds managed by FAM and its affiliates,
is party to a $500,000,000 credit agreement with Bank One, N.A. and certain
other lenders. The Portfolio may borrow under the credit agreement to fund
investor withdrawals and for other lawful purposes other than for leverage. The
Portfolio may borrow up to the maximum amount allowable under the Portfolio's
current prospectus and statement of additional information, subject to various
other legal, regulatory or contractual limits. The Portfolio pays a commitment
fee of .09% per annum based on the Portfolio's pro rata share of the unused
portion of the facility. Amounts borrowed under the facility bear interest at a
rate equal to, at each fund's election, the Federal Funds rate plus .50% or a
base rate as determined by Bank One, N.A. On November 29, 2002, the credit
agreement was renewed for one year under the same terms, except that the
commitment was reduced from $1,000,000,000 to $500,000,000. The Portfolio did
not borrow under the facility during the six months ended April 30, 2003.

OFFICERS AND DIRECTORS/TRUSTEES

Terry K. Glenn, President and Director/Trustee
James H. Bodurtha, Director/Trustee
Joe Grills, Director/Trustee
Herbert I. London, Director/Trustee
Andre F. Perold, Director/Trustee
Roberta Cooper Ramo, Director/Trustee
Robert S. Salomon, Jr., Director/Trustee
Stephen B. Swensrud, Director/Trustee
Robert C. Doll, Jr., Senior Vice President and
   Portfolio Manager
Donald C. Burke, Vice President and Treasurer
Phillip S. Gillespie, Acting Secretary

Custodian

Brown Brothers Harriman & Co.
40 Water Street
Boston, MA 02109-3661

Transfer Agent

Financial Data Services, Inc.
4800 Deer Lake Drive East
Jacksonville, FL 32246-6484
800-637-3863

- --------------------------------------------------------------------------------
Melvin R. Seiden, Director/Trustee of Merrill Lynch Large Cap Growth Fund, has
recently retired. The Fund's Board of Directors/Trustees wishes Mr. Seiden well
in his retirement.
- --------------------------------------------------------------------------------


                                     26 & 27


[LOGO] Merrill Lynch Investment Managers
                                                              [GRAPHICS OMITTED]

This report is not authorized for use as an offer of sale or a solicitation of
an offer to buy shares of the Fund unless accompanied or preceded by the Fund's
current prospectus. Past performance results shown in this report should not be
considered a representation of future performance. Investment return 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.

Merrill Lynch Large Cap Growth Fund of
Merrill Lynch Large Cap Series Funds, Inc.
Box 9011
Princeton, NJ
08543-9011

[RECYCLED LOGO] Printed on post-consumer recycled paper           #CAPGROW--4/03



Item 2 - Did registrant adopt a code of ethics, as of the end of the period
         covered by this report, that applies to the registrant's principal
         executive officer, principal financial officer, principal accounting
         officer or controller, or persons performing similar functions,
         regardless of whether these individuals are employed by the registrant
         or a third party? If not, why not? Briefly describe any amendments or
         waivers that occurred during the period. State here if code of
         ethics/amendments/waivers are on website and give website address-.
         State here if fund will send code of ethics to shareholders without
         charge upon request-- N/A (not answered until July 15, 2003 and only
         annually for funds)

Item 3 - Did the registrant's board of directors determine that the registrant
         either: (i) has at least one audit committee financial expert serving
         on its audit committee; or (ii) does not have an audit committee
         financial expert serving on its audit committee? If yes, disclose name
         of financial expert and whether he/she is "independent," (fund may, but
         is not required, to disclose name/independence of more than one
         financial expert) If no, explain why not. -N/A (not answered until July
         15, 2003 and only annually for funds)

Item 4 - Disclose annually only (not answered until December 15, 2003)

         (a) Audit Fees - Disclose aggregate fees billed for each of the last
                          two fiscal years for professional services rendered by
                          the principal accountant for the audit of the
                          registrant's annual financial statements or services
                          that are normally provided by the accountant in
                          connection with statutory and regulatory filings or
                          engagements for those fiscal years. N/A.

         (b) Audit-Related Fees - Disclose aggregate fees billed in each of the
                                  last two fiscal years for assurance and
                                  related services by the principal accountant
                                  that are reasonably related to the performance
                                  of the audit of the registrant's financial
                                  statements and are not reported under
                                  paragraph (a) of this Item. Registrants shall
                                  describe the nature of the services comprising
                                  the fees disclosed under this category. N/A.

         (c) Tax Fees - Disclose aggregate fees billed in each of the last two
                        fiscal years for professional services rendered by the
                        principal accountant for tax compliance, tax advice, and
                        tax planning. Registrants shall describe the nature of
                        the services comprising the fees disclosed under this
                        category. N/A.

         (d) All Other Fees - Disclose aggregate fees billed in each of the last
                              two fiscal years for products and services
                              provided by the principal accountant, other than
                              the services reported in paragraphs (a) through
                              (c) of this Item. Registrants shall describe the
                              nature of the services comprising the fees
                              disclosed under this category. N/A.

         (e)(1) Disclose the audit committee's pre-approval policies and
                procedures described in paragraph (c)(7) of Rule 2-01 of
                Regulation S-X. N/A.

         (e)(2) Disclose the percentage of services described in each of
                paragraphs (b) through (d) of this Item that were approved by
                the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule
                2-01 of Regulation S-X. N/A.



         (f) If greater than 50%, disclose the percentage of hours expended on
             the principal accountant's engagement to audit the registrant's
             financial statements for the most recent fiscal year that were
             attributed to work performed by persons other than the principal
             accountant's full-time, permanent employees. N/A.

         (g) Disclose the aggregate non-audit fees billed by the registrant's
             accountant for services rendered to the registrant, and rendered to
             the registrant's investment adviser (not including any sub-adviser
             whose role is primarily portfolio management and is subcontracted
             with or overseen by another investment adviser), and any entity
             controlling, controlled by, or under common control with the
             adviser that provides ongoing services to the registrant for each
             of the last two fiscal years of the registrant. N/A.

         (h) Disclose whether the registrant's audit committee has considered
             whether the provision of non-audit services that were rendered to
             the registrant's investment adviser (not including any subadviser
             whose role is primarily portfolio management and is subcontracted
             with or overseen by another investment adviser), and any entity
             controlling, controlled by, or under common control with the
             investment adviser that provides ongoing services to the registrant
             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. N/A.

Item 5 - If the registrant is a listed issuer as defined in Rule 10A-3 under the
         Exchange Act, state whether or not the registrant has a
         separately-designated standing audit committee established in
         accordance with Section 3(a)(58)(A) of the Exchange Act. If the
         registrant has such a committee, however designated, identify each
         committee member. If the entire board of directors is acting as the
         registrant's audit committee in Section 3(a)(58)(B) of the Exchange
         Act, so state.

         If applicable, provide the disclosure required by Rule 10A-3(d) under
         the Exchange Act regarding an exemption from the listing standards for
         audit committees.

         (Listed issuers must be in compliance with the new listing rules by the
         earlier of their first annual shareholders meeting after January 2004,
         or October 31, 2004 (annual requirement))

Item 6 - Reserved

Item 7 - For closed-end funds that contain voting securities in their portfolio,
         describe the policies and procedures that it uses to determine how to
         vote proxies relating to those portfolio securities. N/A (not answered
         until July 1, 2003)

Item 8 -- Reserved

Item 9(a) - The registrant's certifying officers have reasonably designed such
            disclosure controls and procedures to ensure material information
            relating to the registrant is made known to us by others
            particularly during the period in which this report is being
            prepared. The registrant's certifying officers have determined that
            the registrant's disclosure controls and procedures are effective
            based on our evaluation of these controls and procedures as of a
            date within 90 days prior to the filing date of this report.



Item 9(b) -- There were no significant changes in the registrant's internal
             controls or in other factors that could significantly affect these
             controls subsequent to the date of their evaluation, including any
             corrective actions with regard to significant deficiencies and
             material weaknesses.

Item 10 - Exhibits

10(a) - Attach code of ethics or amendments/waivers, unless code of ethics or
        amendments/waivers is on website or offered to shareholders upon request
        without charge. N/A.

10(b) - Attach certifications pursuant to Section 302 of the Sarbanes-Oxley Act.
        Attached hereto.

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

            Merrill Lynch Large Cap Growth Fund


            By: /s/ Terry K. Glenn
                ----------------------------
                Terry K. Glenn,
                President of
                Merrill Lynch Large Cap Growth Fund

            Date: June 23, 2003

            Pursuant to the requirements of the Securities Exchange Act of 1934
            and the Investment Company Act of 1940, this report has been signed
            below by the following persons on behalf of the registrant and in
            the capacities and on the dates indicated.


            By: /s/ Terry K. Glenn
                ----------------------------
                Terry K. Glenn,
                President of
                Merrill Lynch Large Cap Growth Fund

            Date: June 23, 2003

            By: /s/ Donald C. Burke
                ----------------------------
                Donald C. Burke,
                Chief Financial Officer of
                Merrill Lynch Large Cap Growth Fund

            Date: June 23, 2003

            Attached hereto as an exhibit are the certifications pursuant to
            Section 906 of the Sarbanes-Oxley Act.