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 811-07896 ---------- GAMCO Global Series Funds, Inc. -------------------------------------------------------------------- (Exact name of registrant as specified in charter) One Corporate Center Rye, New York 10580-1422 -------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Bruce N. Alpert Gabelli Funds, LLC One Corporate Center Rye, New York 10580-1422 -------------------------------------------------------------------- (Name and address of agent for service) registrant's telephone number, including area code: 1-800-422-3554 --------------- Date of fiscal year end: December 31 ------------ Date of reporting period: June 30, 2007 -------------- Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 100 F Street, NE, Washington, DC 20549. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. REPORTS TO STOCKHOLDERS. The Report to Shareholders is attached herewith. THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND SEMI-ANNUAL REPORT JUNE 30, 2007 TO OUR SHAREHOLDERS, During the second quarter of 2007, The GAMCO Global Convertible Securities Fund (the "Fund") was up 2.3% while the Merrill Lynch Global 300 Convertible Index rose 4.8%, the UBS Global Convertible Index gained 5.4% and the Morgan Stanley Capital International ("MSCI") World Free Index advanced 6.5%. For the six month period ended June 30, 2007, the Fund was up 5.7% versus increases of 8.3%, 8.5%, and 9.2% for the Merrill Lynch Global 300 Convertible Index, the UBS Global Convertible Index and the MSCI World Free Index, respectively. COMPARATIVE RESULTS - --------------------------------------------------------------------------------------------------------------------- AVERAGE ANNUAL RETURNS THROUGH JUNE 30, 2007 (A) ------------------------------------------------ Since Year to Inception Quarter Date 1 Year 3 Year 5 Year 10 Year (2/3/94) - -------------------------------------------------------------------------------------------------------------------- GAMCO GLOBAL CONVERTIBLE SECURITIES FUND CLASS AAA ................................ 2.31% 5.67% 11.15% 10.02% 10.95% 6.42% 6.78% Merrill Lynch Global 300 Convertible Index . 4.79 8.26 17.58 10.48 10.79 7.13 N/A* UBS Global Convertible Index ............... 5.35 8.53 19.13 11.58 12.01 8.82 8.45 MSCI World Free Index ...................... 6.51 9.17 23.59 16.73 14.00 7.03 8.74 Class A .................................... 2.31 5.48 10.97 9.95 10.96 6.42 6.78 (3.57)(b) (0.59)(b) 4.59(b) 7.80(b) 9.66(b) 5.80(b) 6.31(b) Class B .................................... 2.11 5.11 10.16 9.13 10.12 5.92 6.40 (2.89)(c) 0.11(c) 5.16(c) 8.28(c) 9.85(c) 5.92 6.40 Class C .................................... 2.07 5.02 10.22 9.13 10.15 6.00 6.46 1.07(d) 4.02(d) 9.22(d) 9.13 10.15 6.00 6.46 THE GROSS EXPENSE RATIO FOR CLASS AAA, A, B, AND C SHARES IS 2.14%, 2.14%, 2.89%, AND 2.89%, RESPECTIVELY. THE NET EXPENSE RATIO FOR THESE SHARE CLASSES IS 2.02%, 2.02%, 2.77%, AND 2.77%, RESPECTIVELY. CLASS AAA SHARES DO NOT HAVE A SALES CHARGE. THE MAXIMUM SALES CHARGE FOR CLASS A, B, AND C SHARES IS 5.75%, 5.00%, AND 1.00%, RESPECTIVELY. (a) RETURNS REPRESENT PAST PERFORMANCE AND DO NOT GUARANTEE FUTURE RESULTS. INVESTMENT RETURNS AND THE PRINCIPAL VALUE OF AN INVESTMENT WILL FLUCTUATE. TOTAL RETURNS AND AVERAGE ANNUAL RETURNS REFLECT CHANGES IN SHARE PRICE AND REINVESTMENT OF DISTRIBUTIONS AND ARE NET OF EXPENSES. WHEN SHARES ARE REDEEMED, THEY MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PERFORMANCE RETURNS FOR PERIODS LESS THAN ONE YEAR ARE NOT ANNUALIZED. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE DATA PRESENTED. VISIT WWW.GABELLI.COM FOR PERFORMANCE INFORMATION AS OF THE MOST RECENT MONTH END. INVESTORS SHOULD CAREFULLY CONSIDER THE INVESTMENT OBJECTIVES, RISKS, CHARGES, AND EXPENSES OF THE FUND BEFORE INVESTING. THE PROSPECTUS CONTAINS MORE INFORMATION ABOUT THIS AND OTHER MATTERS AND SHOULD BE READ CAREFULLY BEFORE INVESTING. INVESTING IN FOREIGN SECURITIES INVOLVES RISKS NOT ORDINARILY ASSOCIATED WITH INVESTMENTS IN DOMESTIC ISSUES, INCLUDING CURRENCY FLUCTUATION, ECONOMIC, AND POLITICAL RISKS. THE CLASS AAA SHARES' NET ASSET VALUES ("NAV'S") PER SHARE ARE USED TO CALCULATE PERFORMANCE FOR THE PERIODS PRIOR TO THE ISSUANCE OF CLASS A SHARES, CLASS B SHARES, AND CLASS C SHARES ON MAY 2, 2001, MARCH 28, 2001, AND NOVEMBER 26, 2001, RESPECTIVELY. THE ACTUAL PERFORMANCE FOR THE CLASS B SHARES AND CLASS C SHARES WOULD HAVE BEEN LOWER DUE TO THE ADDITIONAL EXPENSES ASSOCIATED WITH THESE CLASSES OF SHARES. THE UBS (FORMERLY WARBURG DILLON REED) GLOBAL CONVERTIBLE INDEX, THE MERRILL LYNCH GLOBAL 300 CONVERTIBLE INDEX, AND THE MORGAN STANLEY CAPITAL INTERNATIONAL ("MSCI") WORLD FREE INDEX ARE UNMANAGED INDICATORS OF INVESTMENT PERFORMANCE. YOU CANNOT INVEST DIRECTLY IN AN INDEX. (b) INCLUDES THE EFFECT OF THE MAXIMUM 5.75% SALES CHARGE AT THE BEGINNING OF THE PERIOD. (c) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS B SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, ONE YEAR, THREE YEAR, AND FIVE YEAR PERIODS OF 5%, 5%, 5%, 3%, AND 2%, RESPECTIVELY, OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. CLASS B SHARES ARE NOT AVAILABLE FOR NEW PURCHASES. (d) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS C SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, AND ONE YEAR PERIODS OF 1% OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. * THERE IS NO DATA AVAILABLE FOR THE MERRILL LYNCH GLOBAL 300 CONVERTIBLE INDEX PRIOR TO DECEMBER 31, 1994. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- We have separated the portfolio managers' commentary from the financial statements and investment portfolio due to corporate governance regulations stipulated by the Sarbanes-Oxley Act of 2002. We have done this to ensure that the content of the portfolio managers' commentary is unrestricted. The financial statements and investment portfolio are mailed separately from the commentary. Both the commentary and the financial statements, including the portfolio of investments, will be available on our website at www.gabelli.com/funds. - -------------------------------------------------------------------------------- THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND DISCLOSURE OF FUND EXPENSES (UNAUDITED) For the Six Month Period from January 1, 2007 through June 30, 2007 EXPENSE TABLE ================================================================================ We believe it is important for you to understand the impact of fees and expenses regarding your investment. All mutual funds have operating expenses. As a shareholder of a fund, you incur ongoing costs, which include costs for portfolio management, administrative services, and shareholder reports (like this one), among others. Operating expenses, which are deducted from a fund's gross income, directly reduce the investment return of a fund. When a fund's expenses are expressed as a percentage of its average net assets, this figure is known as the expense ratio. The following examples are intended to help you understand the ongoing costs (in dollars) of investing in your Fund and to compare these costs with those of other mutual funds. The examples are based on an investment of $1,000 made at the beginning of the period shown and held for the entire period. The Expense Table below illustrates your Fund's costs in two ways: ACTUAL FUND RETURN: This section provides information about actual account values and actual expenses. You may use this section to help you to estimate the actual expenses that you paid over the period after any fee waivers and expense reimbursements. The "Ending Account Value" shown is derived from the Fund's ACTUAL return during the past six months, and the "Expenses Paid During Period" shows the dollar amount that would have been paid by an investor who started with $1,000 in the Fund. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. To do so, simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number given for your Fund under the heading "Expenses Paid During Period" to estimate the expenses you paid during this period. HYPOTHETICAL 5% RETURN: This section provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio. It assumes a hypothetical annualized return of 5% before expenses during the period shown. In this case - because the hypothetical return used is NOT the Fund's actual return - the results do not apply to your investment and you cannot use the hypothetical account value and expense to estimate the actual ending account balance or expenses you paid for the period. This example is useful in making comparisons of the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in shareholder reports of other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs such as sales charges (loads), redemption fees, or exchange fees, if any, which are described in the Prospectus. If these costs were applied to your account, your costs would be higher. Therefore, the 5% hypothetical return is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. Beginning Ending Annualized Expenses Account Value Account Value Expense Paid During 01/01/07 06/30/07 Ratio Period* - -------------------------------------------------------------------------------- THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND - -------------------------------------------------------------------------------- ACTUAL FUND RETURN Class AAA $1,000.00 $1,056.70 2.20% $11.28 Class A $1,000.00 $1,054.80 2.20% $11.27 Class B $1,000.00 $1,051.10 2.95% $15.09 Class C $1,000.00 $1,050.20 2.95% $15.08 HYPOTHETICAL 5% RETURN Class AAA $1,000.00 $1,013.96 2.20% $11.05 Class A $1,000.00 $1,013.96 2.20% $11.05 Class B $1,000.00 $1,010.22 2.95% $14.78 Class C $1,000.00 $1,010.22 2.95% $14.78 * Expenses are equal to the Fund's annualized expense ratio for the last six months multiplied by the average account value over the period, multiplied by the number of days in the most recent fiscal half-year, then divided by 365. 2 SUMMARY OF PORTFOLIO HOLDINGS (UNAUDITED) The following table presents portfolio holdings as a percent of total net assets as of June 30, 2007: THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND Financial Services ................................ 16.2% Health Care ....................................... 9.8% Retail ............................................ 9.7% Business Services ................................. 8.5% Consumer Products ................................. 8.1% Energy and Utilities .............................. 7.2% Food and Beverage ................................. 6.5% Computer Software and Services .................... 6.4% Aerospace ......................................... 4.3% Metals and Mining ................................. 3.8% Telecommunications ................................ 3.2% Hotels and Gaming ................................. 2.9% Real Estate Investment Trusts ..................... 2.6% Broadcasting ...................................... 2.4% Entertainment ..................................... 2.1% Electronics ....................................... 1.7% Equipment and Supplies ............................ 1.4% Other Assets and Liabilities (Net) ................ 3.2% ------ 100.0% ====== THE FUND FILES A COMPLETE SCHEDULE OF PORTFOLIO HOLDINGS WITH THE SECURITIES AND EXCHANGE COMMISSION (THE "SEC") FOR THE FIRST AND THIRD QUARTERS OF EACH FISCAL YEAR ON FORM N-Q, THE LAST OF WHICH WAS FILED FOR THE QUARTER ENDED MARCH 31, 2007. SHAREHOLDERS MAY OBTAIN THIS INFORMATION AT WWW.GABELLI.COM OR BY CALLING THE FUND AT 800-GABELLI (800-422-3554). THE FUND'S FORM N-Q IS AVAILABLE ON THE SEC'S WEBSITE AT WWW.SEC.GOV AND MAY ALSO BE REVIEWED AND COPIED AT THE SEC'S PUBLIC REFERENCE ROOM IN WASHINGTON, DC. INFORMATION ON THE OPERATION OF THE PUBLIC REFERENCE ROOM MAY BE OBTAINED BY CALLING 1-800-SEC-0330. PROXY VOTING The Fund files Form N-PX with its complete proxy voting record for the 12 months ended June 30th, no later than August 31st of each year. A description of the Fund's proxy voting policies, procedures, and how the Fund voted proxies relating to portfolio securities is available without charge, upon request, by (i) calling 800-GABELLI (800-422-3554); (ii) writing to The Gabelli Funds at One Corporate Center, Rye, NY 10580-1422; or (iii) visiting the SEC's website at www.sec.gov. 3 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND SCHEDULE OF INVESTMENTS -- JUNE 30, 2007 (UNAUDITED) ================================================================================ PRINCIPAL MARKET AMOUNT COST VALUE --------- ---- ------ CONVERTIBLE CORPORATE BONDS -- 71.6% AEROSPACE -- 4.3% $ 200,000 Gencorp Inc., Sub. Deb. Cv., 4.000%, 01/16/24 ............... $ 202,739 $ 207,750 180,000 Lockheed Martin Corp., Cv., 5.110%, 08/15/33 (a) ........... 193,597 242,712 ------------ ------------ 396,336 450,462 ------------ ------------ BUSINESS SERVICES -- 8.5% 100,000(b) Fugro NV, Cv., 2.375%, 04/27/10 ............... 168,119 263,473 400,000 International Game Technology, Cv., 2.600%, 12/15/36 (c) ........... 394,107 391,500 520,000(b) Publicis Group SA, Cv., 0.750%, 07/17/08 ............... 401,817 234,666 ------------ ------------ 964,043 889,639 ------------ ------------ COMPUTER SOFTWARE AND SERVICES -- 6.4% 500,000 Midway Games Inc., Cv., 6.000%, 09/30/25 ............... 484,097 491,875 20,000,000(d) Nomura Research Institute Ltd., Cv., Zero Coupon, 03/31/14 .......... 180,788 180,792 ------------ ------------ 664,885 672,667 ------------ ------------ CONSUMER PRODUCTS -- 8.1% 200,000 Church & Dwight Co. Inc., Deb. Cv., 5.250%, 08/15/33 ............... 219,740 321,500 300,000 Eastman Kodak Co., Cv., 3.375%, 10/15/33 ............... 307,892 316,500 200,000 Lifetime Brands Inc., Cv., 4.750%, 07/15/11 ............... 207,219 205,000 ------------ ------------ 734,851 843,000 ------------ ------------ ELECTRONICS -- 1.7% 200,000 Spansion Inc., Sub. Deb. Cv., 2.250%, 06/15/16 (c) ........... 177,964 179,000 ------------ ------------ ENERGY AND UTILITIES -- 7.2% 200,000 Scottish Power Finance Ltd., Sub. Deb. Cv., 4.000%, 07/29/49 (a) ........... 252,985 453,350 200,000 Transocean Inc., Deb. Cv., 1.500%, 05/15/21 ............... 208,587 296,500 ------------ ------------ 461,572 749,850 ------------ ------------ FINANCIAL SERVICES -- 11.2% CompuCredit Corp., Cv., 200,000 3.625%, 05/30/25 ............... 214,726 207,750 200,000 5.875%, 11/30/35 ............... 187,072 188,750 PRINCIPAL MARKET AMOUNT COST VALUE --------- ---- ------ $ 200,000(b) Givaudan Nederland Finance BV, Cv., 5.375%, 03/01/10 ............... $ 174,694 $ 168,712 300,000 PrivateBancorp Inc., Cv., 3.625%, 03/15/27 ............... 296,247 294,189 300,000 Prudential Financial Inc., Cv., 2.960%, 12/12/36 (a) ........... 308,363 310,740 ------------ ------------ 1,181,102 1,170,141 ------------ ------------ FOOD AND BEVERAGE -- 6.5% 100,000(b) Royal Numico NV, Sub. Deb. Cv., 3.000%, 07/11/10 ............... 265,248 252,758 400,000 Wild Oats Markets Inc., Cv. (STEP), 3.250%, 05/15/34 ............... 430,894 430,000 ------------ ------------ 696,142 682,758 ------------ ------------ HEALTH CARE -- 5.7% 300,000 Advanced Medical Optics Inc., Sub. Deb. Cv., 1.375%, 07/01/25 ............... 289,534 286,125 300,000 Edwards Lifesciences Corp., Cv., 3.875%, 05/15/33 ............... 303,081 312,000 ------------ ------------ 592,615 598,125 ------------ ------------ HOTELS AND GAMING -- 2.9% 200,000 Hilton Hotels Corp., Cv., 3.375%, 04/15/23 ............... 297,931 302,250 ------------ ------------ REAL ESTATE INVESTMENT TRUSTS -- 2.6% 300,000 Host Hotels & Resorts Inc., Cv., 2.625%, 04/15/27 (c) ........... 285,034 276,000 ------------ ------------ RETAIL -- 6.5% 300,000 Kellwood Co., Deb. Cv. (STEP), 3.500%, 06/15/34 ............... 271,198 276,750 400,000 Pier 1 Imports Inc., Cv. (STEP), 6.375%, 02/15/36 ............... 387,648 399,000 ------------ ------------ 658,846 675,750 ------------ ------------ TOTAL CONVERTIBLE CORPORATE BONDS ................ 7,111,321 7,489,642 ------------ ------------ See accompanying notes to financial statements. 4 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE -------- ---- ------ CONVERTIBLE PREFERRED STOCKS -- 21.7% BROADCASTING -- 2.4% 6,000 Emmis Communications Corp., 6.250% Cv. Pfd., Ser. A ........ $ 276,300 $ 253,080 ------------ ------------ FINANCIAL SERVICES -- 5.0% 5,000 New York Community Capital Trust V, 6.000% Cv. Pfd. ................ 235,428 239,200 6,000 Sovereign Bancorp Inc., 4.375% Cv. Pfd. ................ 273,000 282,000 ------------ ------------ 508,428 521,200 ------------ ------------ HEALTH CARE -- 4.1% 3,000 Omnicare Inc., 4.000% Cv. Pfd., Ser. B ........ 149,498 149,625 4,000 Schering-Plough Corp., 6.000% Cv. Pfd. ................ 206,634 275,200 ------------ ------------ 356,132 424,825 ------------ ------------ METALS AND MINING -- 3.8% 220 Freeport-McMoRan Copper & Gold Inc., 5.500% Cv. Pfd. ................ 221,450 401,665 ------------ ------------ RETAIL -- 3.2% 300 Blockbuster Inc., 7.500% Cv. Pfd. ................ 337,981 334,688 ------------ ------------ TELECOMMUNICATIONS -- 3.2% 7,000 Cincinnati Bell Inc., 6.750% Cv. Pfd., Ser. B ........ 280,315 334,950 ------------ ------------ TOTAL CONVERTIBLE PREFERRED STOCKS ............... 1,980,606 2,270,408 ------------ ------------ COMMON STOCKS -- 3.5% ENTERTAINMENT -- 2.1% 7,000 Aruze Corp. ...................... 247,155 217,746 ------------ ------------ EQUIPMENT AND SUPPLIES -- 1.4% 20,000 Allen-Vanguard Corp. + ........... 98,577 144,379 ------------ ------------ TOTAL COMMON STOCKS .............. 345,732 362,125 ------------ ------------ TOTAL INVESTMENTS -- 96.8% ........... $ 9,437,659 10,122,175 ============ OTHER ASSETS AND LIABILITIES (NET) -- 3.2% ....... 332,146 ------------ NET ASSETS -- 100.0% ............................. $ 10,454,321 ============ - ---------------- (a) Floating rate security. The rate disclosed is that in effect at June 30, 2007. (b) Principal amount denoted in Euros. (c) Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers. At June 30, 2007, the market value of the Rule 144A securities amounted to $846,500 or 8.10% of total net assets. These securities have been deemed by the Board of Directors to be liquid. (d) Principal amount denoted in Japanese Yen. + Non-income producing security. STEP Step coupon bond. The rate disclosed is that in effect at June 30, 2007. % OF MARKET MARKET GEOGRAPHIC DIVERSIFICATION VALUE VALUE - -------------------------- -------- ------- North America ......................... 84.1% $ 8,507,528 Europe ................................ 9.1 919,609 Japan ................................. 3.9 398,538 Latin America ......................... 2.9 296,500 ------ ----------- 100.0% $10,122,175 ====== =========== See accompanying notes to financial statements. 5 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND STATEMENT OF ASSETS AND LIABILITIES JUNE 30, 2007 (UNAUDITED) ================================================================================ ASSETS: Investments, at value (cost $9,437,659) ................... $ 10,122,175 Foreign currency, at value (cost $4) ...................... 4 Cash ...................................................... 259,216 Receivable for Fund shares sold ........................... 47,966 Dividends and interest receivable ......................... 79,580 Prepaid expense ........................................... 868 Other assets .............................................. 1,054 ------------ TOTAL ASSETS .............................................. 10,510,863 ------------ LIABILITIES: Payable for Fund shares redeemed .......................... 1,627 Payable for investment advisory fees ...................... 5,141 Payable for distribution fees ............................. 2,322 Payable for legal and audit fees .......................... 20,221 Payable for shareholder communications expenses ................................. 13,202 Payable for custodian fees ................................ 6,193 Payable for shareholder services fees ..................... 4,338 Payable for registration fees ............................. 3,431 Payable for Directors' fees ............................... 67 ------------ TOTAL LIABILITIES ......................................... 56,542 ------------ NET ASSETS applicable to 1,827,695 shares outstanding ...................................... $ 10,454,321 ============ NET ASSETS CONSIST OF: Paid-in capital, each class at $0.001 par value ........... $ 9,609,124 Accumulated net investment loss ........................... (187,308) Accumulated net realized gain on investments and foreign currency transactions ....................... 347,943 Net unrealized appreciation on investments ................ 684,516 Net unrealized appreciation on foreign currency translations ................................... 46 ------------ NET ASSETS ................................................ $ 10,454,321 ============ SHARES OF CAPITAL STOCK: CLASS AAA: Net Asset Value, offering and redemption price per share ($10,209,952 / 1,782,992 shares outstanding; 75,000,000 shares authorized) .............. $5.73 ===== CLASS A: Net Asset Value and redemption price per share ($66,773 / 11,649 shares outstanding; 50,000,000 shares authorized) ........................... $5.73 ===== Maximum offering price per share (NAV / 0.9425, based on maximum sales charge of 5.75% of the offering price) .................................. $6.08 ===== CLASS B: Net Asset Value and offering price per share ($39,000 / 7,356 shares outstanding; 25,000,000 shares authorized) ........................... $5.30(a) ===== CLASS C: Net Asset Value and offering price per share ($138,596 / 25,698 shares outstanding; 25,000,000 shares authorized) ........................... $5.39(a) ===== - ------------ (a) Redemption price varies based on the length of time held. STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED JUNE 30, 2007 (UNAUDITED) ================================================================================ INVESTMENT INCOME: Dividends (net of foreign taxes of $12) ..................... $ 49,538 Interest .................................................... (5,641) --------- TOTAL INVESTMENT INCOME ..................................... 43,897 --------- EXPENSES: Investment advisory fees .................................... 52,084 Distribution fees - Class AAA ............................... 12,699 Distribution fees - Class A ................................. 86 Distribution fees - Class B ................................. 206 Distribution fees - Class C ................................. 738 Shareholder communications expenses ......................... 15,110 Legal and audit fees ........................................ 14,999 Registration expenses ....................................... 13,072 Interest expense ............................................ 10,406 Shareholder services fees ................................... 7,519 Custodian fees .............................................. 2,194 Directors' fees ............................................. 655 Miscellaneous expenses ...................................... 3,583 --------- TOTAL EXPENSES .............................................. 133,351 Less: Expense reimbursement (see Note 3) .................... (18,068) --------- NET EXPENSES ................................................ 115,283 --------- NET INVESTMENT LOSS ......................................... (71,386) --------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY: Net realized gain on investments ............................ 410,108 Net realized gain on foreign currency transactions ..................................... 47,102 --------- Net realized gain on investments and foreign currency transactions ..................................... 457,210 --------- Net change in unrealized appreciation/ depreciation on investments ............................... 179,967 Net change in unrealized appreciation/ depreciation on foreign currency translations ............. (101) --------- Net change in unrealized appreciation/ depreciation on investments and foreign currency translations ..................................... 179,866 --------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY .......................... 637,076 --------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ........................................... $ 565,690 ========= See accompanying notes to financial statements. 6 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND STATEMENT OF CHANGES IN NET ASSETS ================================================================================ SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 ---------------- ----------------- OPERATIONS: Net investment income (loss) ................................................. $ (71,386) $ 194,695 Net realized gain on investments and foreign currency transactions ........... 457,210 2,061,341 Net change in unrealized appreciation/depreciation on investments and foreign currency translations .............................................. 179,866 (1,199,173) ----------- ----------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ......................... 565,690 1,056,863 ----------- ----------- DISTRIBUTIONS TO SHAREHOLDERS: Net investment income Class AAA .................................................................. -- (253,454) Class A .................................................................... -- (1,031) Class B .................................................................... -- (967) Class C .................................................................... -- (2,302) ----------- ----------- -- (257,754) ----------- ----------- Net realized gains Class AAA .................................................................. (106,450)* (1,907,313) Class A .................................................................... (696)* (8,497) Class B .................................................................... (465)* (7,690) Class C .................................................................... (1,612)* (29,949) ----------- ----------- (109,223) (1,953,449) ----------- ----------- TOTAL DISTRIBUTIONS TO SHAREHOLDERS .......................................... (109,223) (2,211,203) ----------- ----------- CAPITAL SHARE TRANSACTIONS: Class AAA .................................................................. (926,735) (1,967,425) Class A .................................................................... 14,815 (39,957) Class B .................................................................... (4,296) (26,216) Class C .................................................................... (31,644) 41,588 ----------- ----------- NET DECREASE IN NET ASSETS FROM CAPITAL SHARE TRANSACTIONS ................... (947,860) (1,992,010) ----------- ----------- REDEMPTION FEES .............................................................. 2 94 ----------- ----------- NET DECREASE IN NET ASSETS ................................................... (491,391) (3,146,256) NET ASSETS: Beginning of period .......................................................... 10,945,712 14,091,968 ----------- ----------- End of period (including undistributed net investment income of $0 and $0, respectively) .............................. $10,454,321 $10,945,712 =========== =========== - ----------------- *Based on fiscal year to date book income. Amounts are subject to change and recharacterization at fiscal year end. See accompanying notes to financial statements. 7 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (UNAUDITED) ================================================================================ 1. ORGANIZATION. The GAMCO Global Convertible Securities Fund (the "Fund"), formerly, The Gabelli Global Convertible Securities Fund, a series of GAMCO Global Series Funds, Inc. (the "Corporation"), formerly, Gabelli Global Series Funds, Inc., was organized on July 16, 1993 as a Maryland corporation. The Fund is a non-diversified open-end management investment company registered under the Investment Company Act of 1940, as amended (the "1940 Act"), and one of four separately managed portfolios (collectively, the "Portfolios") of the Corporation. The Fund's primary objective is to obtain a high level of total return through a combination of income and capital appreciation. The Fund commenced investment operations on February 3, 1994. 2. SIGNIFICANT ACCOUNTING POLICIES. The preparation of financial statements in accordance with United States ("U.S.") generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements. SECURITY VALUATION. Portfolio securities listed or traded on a nationally recognized securities exchange or traded in the U.S. over-the-counter market for which market quotations are readily available are valued at the last quoted sale price or a market's official closing price as of the close of business on the day the securities are being valued. If there were no sales that day, the security is valued at the average of the closing bid and asked prices or, if there were no asked prices quoted on that day, then the security is valued at the closing bid price on that day. If no bid or asked prices are quoted on such day, the security is valued at the most recently available price or, if the Board of Directors (the "Board") so determines, by such other method as the Board shall determine in good faith to reflect its fair market value. Portfolio securities traded on more than one national securities exchange or market are valued according to the broadest and most representative market, as determined by Gabelli Funds, LLC (the "Adviser"). Portfolio securities primarily traded on a foreign market are generally valued at the preceding closing values of such securities on the relevant market, but may be fair valued pursuant to procedures established by the Board if market conditions change significantly after the close of the foreign market but prior to the close of business on the day the securities are being valued. Debt instruments with remaining maturities of 60 days or less that are not credit impaired are valued at amortized cost, unless the Board determines such amount does not reflect the securities' fair value, in which case these securities will be fair valued as determined by the Board. Debt instruments having a maturity greater than 60 days for which market quotations are readily available are valued at the average of the latest bid and asked prices. If there were no asked prices quoted on such day, the security is valued using the closing bid price. Futures contracts are valued at the closing settlement price of the exchange or board of trade on which the applicable contract is traded. Securities and assets for which market quotations are not readily available are fair valued as determined by the Board. Fair valuation methodologies and procedures may include, but are not limited to: analysis and review of available financial and non-financial information about the company; comparisons to the valuation and changes in valuation of similar securities, including a comparison of foreign securities to the equivalent U.S. dollar value American Depository Receipt ("ADR") securities at the close of the U.S. exchange; and evaluation of any other information that could be indicative of the value of the security. 8 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ In September 2006, the Financial Accounting Standards Board (the "FASB") issued Statement of Financial Accounting Standards ("SFAS") 157, Fair Value Measurements, which clarifies the definition of fair value and requires companies to expand their disclosure about the use of fair value to measure assets and liabilities in interim and annual periods subsequent to initial recognition. Adoption of SFAS 157 requires the use of the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. SFAS 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. At this time, management is in the process of reviewing the requirements of SFAS 157 against its current valuation policies to determine future applicability. REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with primary government securities dealers recognized by the Federal Reserve Board, with member banks of the Federal Reserve System, or with other brokers or dealers that meet credit guidelines established by the Adviser and reviewed by the Board. Under the terms of a typical repurchase agreement, the Fund takes possession of an underlying debt obligation subject to an obligation of the seller to repurchase, and the Fund to resell, the obligation at an agreed-upon price and time, thereby determining the yield during the Fund's holding period. The Fund will always receive and maintain securities as collateral whose market value, including accrued interest, will be at least equal to 102% of the dollar amount invested by the Fund in each agreement. The Fund will make payment for such securities only upon physical delivery or upon evidence of book entry transfer of the collateral to the account of the custodian. To the extent that any repurchase transaction exceeds one business day, the value of the collateral is marked-to-market on a daily basis to maintain the adequacy of the collateral. If the seller defaults and the value of the collateral declines or if bankruptcy proceedings are commenced with respect to the seller of the security, realization of the collateral by the Fund may be delayed or limited. At June 30, 2007, there were no open repurchase agreements. FUTURES CONTRACTS. The Fund may engage in futures contracts for the purpose of hedging against changes in the value of its portfolio securities and in the value of securities it intends to purchase. Upon entering into a futures contract, the Fund is required to deposit with the broker an amount of cash or cash equivalents equal to a certain percentage of the contract amount. This is known as the "initial margin". Subsequent payments ("variation margin") are made or received by the Fund each day, depending on the daily fluctuations in the value of the contract, which are included in unrealized appreciation/depreciation on investments and futures contracts. The Fund recognizes a realized gain or loss when the contract is closed. There are several risks in connection with the use of futures contracts as a hedging instrument. The change in value of futures contracts primarily corresponds with the value of their underlying instruments, which may not correlate with the change in value of the hedged investments. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid secondary market. At June 30, 2007, there were no open futures contracts. FORWARD FOREIGN EXCHANGE CONTRACTS. The Fund may engage in forward foreign exchange contracts for hedging a specific transaction with respect to either the currency in which the transaction is denominated or another currency as deemed appropriate by the Adviser. Forward foreign exchange contracts are valued at the forward rate and are marked-to-market daily. The change in market value is included in unrealized appreciation/depreciation on investments and foreign currency translations. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. 9 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ The use of forward foreign exchange contracts does not eliminate fluctuations in the underlying prices of the Fund's portfolio securities, but it does establish a rate of exchange that can be achieved in the future. Although forward foreign exchange contracts limit the risk of loss due to a decline in the value of the hedged currency, they also limit any potential gain that might result should the value of the currency increase. In addition, the Fund could be exposed to risks if the counterparties to the contracts are unable to meet the terms of their contracts. At June 30, 2007, there were no open forward foreign exchange contracts. FOREIGN CURRENCY TRANSLATIONS. The books and records of the Fund are maintained in U.S. dollars. Foreign currencies, investments, and other assets and liabilities are translated into U.S. dollars at the current exchange rates. Purchases and sales of investment securities, income, and expenses are translated at the exchange rate prevailing on the respective dates of such transactions. Unrealized gains and losses that result from changes in foreign exchange rates and/or changes in market prices of securities have been included in unrealized appreciation/depreciation on investments and foreign currency translations. Net realized foreign currency gains and losses resulting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions, and the difference between the amounts of interest and dividends recorded on the books of the Fund and the amounts actually received. The portion of foreign currency gains and losses related to fluctuation in exchange rates between the initial trade date and subsequent sale trade date is included in realized gain/(loss) on investments. FOREIGN SECURITIES. The Fund may directly purchase securities of foreign issuers. Investing in securities of foreign issuers involves special risks not typically associated with investing in securities of U.S. issuers. The risks include possible revaluation of currencies, the ability to repatriate funds, less complete financial information about companies, and possible future adverse political and economic developments. Moreover, securities of many foreign issuers and their markets may be less liquid and their prices more volatile than those of securities of comparable U.S. issuers. FOREIGN TAXES. The Fund may be subject to foreign taxes on income, gains on investments, or currency repatriation, a portion of which may be recoverable. The Fund will accrue such taxes and recoveries as applicable, based upon its current interpretation of tax rules and regulations that exist in the markets in which it invests. SECURITIES TRANSACTIONS AND INVESTMENT INCOME. Securities transactions are accounted for on the trade date with realized gain or loss on investments determined by using the identified cost method. Interest income (including amortization of premium and accretion of discount) is recorded on the accrual basis. Premiums and discounts on debt securities are amortized using the effective yield to maturity method. Dividend income is recorded on the ex-dividend date except for certain dividends which are recorded as soon as the Fund is informed of the dividend. DETERMINATION OF NET ASSET VALUE AND CALCULATION OF EXPENSES. Certain administrative expenses are common to, and allocated among, various affiliated funds. Such allocations are made on the basis of each Fund's average net assets or other criteria directly affecting the expenses as determined by the Adviser pursuant to procedures established by the Board. 10 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ In calculating the NAV per share of each class, investment income, realized and unrealized gains and losses, redemption fees, and expenses other than class specific expenses are allocated daily to each class of shares based upon the proportion of net assets of each class at the beginning of each day. Distribution expenses are borne solely by the class incurring the expense. CUSTODIAN FEE CREDITS AND INTEREST EXPENSE. When cash balances are maintained in the custody account, the Fund receives credits which are used to offset custodian fees. The gross expenses paid under the custody arrangement are included in custodian fees in the Statement of Operations with the corresponding expense offset, if any, shown as "custodian fee credits". When cash balances are overdrawn, the Fund is charged an overdraft fee equal to 2.00% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. DISTRIBUTIONS TO SHAREHOLDERS. Distributions to shareholders are recorded on the ex-dividend date. Distributions to shareholders are based on income and capital gains as determined in accordance with federal income tax regulations, which may differ from income and capital gains as determined under U.S. generally accepted accounting principles. These differences are primarily due to differing treatments of income and gains on various investment securities and foreign currency transactions held by the Fund, timing differences, and differing characterizations of distributions made by the Fund. Distributions from net investment income include net realized gains on foreign currency transactions. These book/tax differences are either temporary or permanent in nature. To the extent these differences are permanent, adjustments are made to the appropriate capital accounts in the period when the differences arise. These reclassifications have no impact on the NAV of the Fund. The tax character of distributions paid during the fiscal year ended December 31, 2006 was as follows: DISTRIBUTIONS PAID FROM: Ordinary income (inclusive of short-term capital gains) ........................ $ 599,473 Long-term capital gains ................. 1,685,799 ---------- Total distributions paid ................ $2,285,272 ========== The Fund has a fixed distribution policy. Under the policy, the Fund declares and pays distributions quarterly in the amount of $0.03 per share and identifies that portion of the distribution which is from net investment income, capital gains, and paid-in capital. The actual source of the distribution is determined after the end of the fiscal year. The Fund continues to evaluate its distribution policy in light of ongoing economic and market conditions and may change the amount of the quarterly distributions in the future. The Fund currently intends to pay $0.03 per share on a quarterly basis in March, June, September, and December. PROVISION FOR INCOME TAXES. The Fund intends to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). It is the policy of the Fund to comply with the requirements of the Code applicable to regulated investment companies and to distribute substantially all of its net investment company taxable income and net capital gains. Therefore, no provision for federal income taxes is required. 11 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ The following summarizes the tax cost of investments and related unrealized appreciation/(depreciation) at June 30, 2007: GROSS GROSS UNREALIZED UNREALIZED NET UNREALIZED COST APPRECIATION DEPRECIATION APPRECIATION ---- ------------ ------------ ------------ Investments .... $9,437,682 $953,259 $(268,766) $684,493 In July 2006, the FASB issued Interpretation No. 48, "Accounting for Uncertainty in Income Taxes, an Interpretation of FASB Statement No. 109" ("the Interpretation"). The Interpretation established for all entities, including pass-through entities such as the Fund, a minimum threshold for financial statement recognition of the benefit of positions taken in filing tax returns (including whether an entity is taxable in a particular jurisdiction), and required certain expanded tax disclosures. The Interpretation was implemented by the Fund on June 29, 2007 and applied to all open tax years as of the effective date. Management has evaluated the application of the Interpretation to the Fund, and the adoption of the Interpretation had no impact on the amounts reported in the financial statements. 3. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS. The Fund has entered into an investment advisory agreement (the "Advisory Agreement") with the Adviser which provides that the Fund will pay the Adviser a fee, computed daily and paid monthly, at the annual rate of 1.00% of the value of its average daily net assets. In accordance with the Advisory Agreement, the Adviser provides a continuous investment program for the Fund's portfolio, oversees the administration of all aspects of the Fund's business and affairs, and pays the compensation of all Officers and Directors of the Fund who are affiliated persons of the Adviser. The Adviser has voluntarily agreed to waive the investment advisory fee of the Fund to the extent necessary to maintain the annualized total net operating expenses (exclusive of brokerage, interest, taxes, and extraordinary expenses) at no more than 2.00%, 2.00%, 2.75%, and 2.75% of average daily net assets for Class AAA, Class A, Class B, and Class C, respectively. For the six months ended June 30, 2007, the Adviser reimbursed the Fund in the amount of $18,068. Such amount is not recoverable in future fiscal years. If total net assets of the Corporation are in excess of $100 million, the Corporation pays each Director that is not considered to be an affiliated person an annual retainer of $3,000 plus $500 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. If total net assets of the Corporation are below $100 million, the Corporation pays each Independent Director an annual retainer of $1,500 plus $250 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. All Board committee members receive $500 per meeting attended. Directors who are directors or employees of the Adviser or an affiliated company receive no compensation or expense reimbursement from the Fund. 4. DISTRIBUTION PLAN. The Fund's Board has adopted a distribution plan (the "Plan") for each class of shares pursuant to Rule 12b-1 under the 1940 Act. Gabelli & Company, Inc. ("Gabelli & Company"), an affiliate of the Adviser, serves as distributor of the Fund. Under the Class AAA, Class A, Class B, and Class C Share Plans, payments are authorized to Gabelli & Company at annual rates of 0.25%, 0.25%, 1.00%, and 1.00%, respectively, of the average daily net assets of those classes, the annual limitations under each Plan. Such payments are accrued daily and paid monthly. 12 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ 5. PORTFOLIO SECURITIES. Purchases and proceeds from the sales of securities for the six months ended June 30, 2007, other than short-term and U.S. Government securities, aggregated $4,928,909 and $5,761,568, respectively. 6. TRANSACTIONS WITH AFFILIATES. During the six months ended June 30, 2007, the Fund paid brokerage commissions of $560 to Gabelli & Company. Additionally, Gabelli & Company informed the Fund that it received $511 from investors representing commissions (sales charges and underwriting fees) on sales and redemptions of Fund shares. 7. LINE OF CREDIT. Effective June 20, 2007, the Fund participates in an unsecured line of credit of up to $75,000,000, and may borrow up to 10% of its net assets from the custodian for temporary borrowing purposes. Prior to June 20, 2007, the line of credit was $25,000,000. Borrowings under this arrangement bear interest at 0.75% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. At June 30, 2007, there were no borrowings outstanding under the line of credit. The average daily amount of borrowings outstanding from the line of credit within the six months ended June 30, 2007 was $110,580 with a weighted average interest rate of 6.06%. The maximum amount borrowed at any time during the six months ended June 30, 2007 was $624,000. 8. CAPITAL STOCK TRANSACTIONS. The Fund currently offers four classes of shares - - Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares. Class AAA Shares are offered only to investors who acquire them directly from Gabelli & Company, or through selected broker/dealers, or the transfer agent without a sales charge. Class A Shares are subject to a maximum front-end sales charge of 5.75%. Class B Shares are subject to a contingent deferred sales charge ("CDSC") upon redemption within six years of purchase and automatically convert to Class A Shares approximately eight years after the original purchase. The applicable CDSC is equal to a declining percentage of the lesser of the NAV per share at the date of the original purchase or at the date of redemption, based on the length of time held. Class C Shares are subject to a 1.00% CDSC for one year after purchase. Class B Shares are available only through exchange of Class B Shares of other funds distributed by Gabelli & Company. The Board has approved Class I Shares which have not been offered publicly. The Fund imposes a redemption fee of 2.00% on Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares that are redeemed or exchanged on or before the seventh day after the date of a purchase. The redemption fee is deducted from the proceeds otherwise payable to the redeeming shareholders and is retained by the Fund. The redemption fees retained by the Fund during the six months ended June 30, 2007 and the fiscal year ended December 31, 2006 amounted to $2 and $94, respectively. The redemption fee does not apply to redemptions of shares where (i) the shares were purchased through automatic reinvestment of dividends or other distributions, (ii) the redemption was initiated by the Fund, (iii) the shares were purchased through programs that collect the redemption fee at the program level and remit them to the Fund, or (iv) the shares were purchased through programs that the Adviser determines to have appropriate anti-short-term trading policies in place or as to which the Adviser has received assurances that look-through redemption fee procedures or effective anti-short-term trading policies and procedures are in place. 13 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ Transactions in shares of capital stock were as follows: SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 -------------------------- ----------------------------- SHARES AMOUNT SHARES AMOUNT -------- ----------- ---------- ------------ CLASS AAA CLASS AAA -------------------------- ----------------------------- Shares sold ......................................... 160,791 $ 902,655 1,878,922 $ 12,070,875 Shares issued upon reinvestment of distributions .... 17,029 96,460 353,287 1,969,894 Shares redeemed ..................................... (344,877) (1,925,850) (2,496,862) (16,008,194) -------- ----------- ---------- ------------ Net decrease ...................................... (167,057) $ (926,735) (264,653) $ (1,967,425) ======== =========== ========== ============ CLASS A CLASS A -------------------------- ----------------------------- Shares sold ......................................... 4,425 $ 24,248 1,429 $ 8,999 Shares issued upon reinvestment of distributions .... 74 420 1,606 8,860 Shares redeemed ..................................... (1,750) (9,853) (9,066) (57,816) -------- ----------- ---------- ------------ Net increase (decrease) ........................... 2,749 $ 14,815 (6,031) $ (39,957) ======== =========== ========== ============ CLASS B CLASS B -------------------------- ----------------------------- Shares issued upon reinvestment of distributions .... 71 $ $ 374 1,588 $ 8,177 Shares redeemed ..................................... (880) (4,670) (5,758) (34,393) -------- ----------- ---------- ------------ Net decrease ...................................... (809) $ (4,296) (4,170) $ (26,216) ======== =========== ========== ============ CLASS C CLASS C -------------------------- ----------------------------- Shares sold ......................................... -- -- 7,874 $ 50,000 Shares issued upon reinvestment of distributions .... 207 $ 1,102 6,086 31,842 Shares redeemed ..................................... (6,204) (32,746) (6,542) (40,254) -------- ----------- ---------- ------------ Net increase (decrease) ........................... (5,997) $ (31,644) 7,418 $ 41,588 ======== =========== ========== ============ 9. INDEMNIFICATIONS. The Fund enters into contracts that contain a variety of indemnifications. The Fund's maximum exposure under these arrangements is unknown. However, the Fund has not had prior claims or losses pursuant to these contracts and expects the risk of loss to be remote. 10. OTHER MATTERS. The Adviser and/or affiliates received subpoenas from the Attorney General of the State of New York and the SEC requesting information on mutual fund share trading practices involving certain funds managed by the Adviser. GAMCO Investors, Inc. ("GAMCO"), the Adviser's parent company, responded to these requests for documents and testimony. In June 2006, GAMCO began discussions with the SEC regarding a possible resolution of their inquiry. In February 2007, the Adviser made an offer of settlement to the staff of the SEC for communication to the Commission for its consideration to resolve this matter. This offer of settlement is subject to agreement regarding the specific language of the SEC's administrative order and other settlement documents. On a separate matter, in September 2005, the Adviser was informed by the staff of the SEC that the staff may recommend to the Commission that an administrative remedy and a monetary penalty be sought from the Adviser in connection with the actions of two of seven closed-end funds managed by the Adviser relating to Section 19(a) and Rule 19a-1 of the 1940 Act. These provisions require registered investment companies to provide written statements to shareholders when a dividend is made from a source other than net investment income. While the two closed-end funds sent annual statements and provided other materials containing this information, the funds did not send written statements to shareholders with each distribution in 2002 and 2003. The Adviser believes that all of the funds are now in compliance. The Adviser believes that these matters would have no effect on the Fund or any material adverse effect on the Adviser or its ability to manage the Fund. 14 THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND FINANCIAL HIGHLIGHTS ================================================================================ Selected data for a share of capital stock outstanding throughout each period: INCOME FROM INVESTMENT OPERATIONS DISTRIBUTIONS -------------------------------------- ------------------------------------------------- Net Net Asset Net Realized and Total Net Period Value, Investment Unrealized from Net Realized Return Ended Beginning Income Gain (Loss) on Investment Investment Gain on of Total December 31, of Period (Loss)(a) Investments Operations Income Investments Capital Distributions - ------------ --------- ---------- ------------- ---------- ---------- ----------- ------- ------------- CLASS AAA 2007(c) $5.48 $(0.04) $ 0.35 $ 0.31 -- $(0.06)* -- $(0.06) 2006 6.22 0.08 0.44 0.52 $(0.10) (1.16) -- (1.26) 2005 6.26 0.04 0.40 0.44 (0.17) (0.32) -- (0.49) 2004 6.77 0.07 0.62 0.69 (0.12) (0.38) $(0.70) (1.20) 2003 6.66 0.07 1.24 1.31 (0.11) -- (1.09) (1.20) 2002 8.29 0.07 (0.50) (0.43) (0.04) -- (1.16) (1.20) CLASS A 2007(c) $5.49 $(0.04) $ 0.34 $ 0.30 -- $(0.06)* -- $(0.06) 2006 6.23 0.08 0.44 0.52 $(0.10) (1.16) -- (1.26) 2005 6.26 0.04 0.41 0.45 (0.17) (0.32) -- (0.49) 2004 6.77 0.09 0.60 0.69 (0.11) (0.36) $(0.73) (1.20) 2003 6.66 0.07 1.24 1.31 (0.11) -- (1.09) (1.20) 2002 8.28 0.07 (0.49) (0.42) (0.04) -- (1.16) (1.20) CLASS B 2007(c) $5.10 $(0.06) $ 0.32 $ 0.26 -- $(0.06)* -- $(0.06) 2006 5.91 0.03 0.42 0.45 $(0.10) (1.16) -- (1.26) 2005 6.01 (0.01) 0.39 0.38 (0.17) (0.32) -- (0.49) 2004 6.59 0.03 0.59 0.62 (0.10) (0.34) $(0.76) (1.20) 2003 6.55 0.03 1.21 1.24 (0.07) -- (1.13) (1.20) 2002 8.23 0.02 (0.50) (0.48) (0.04) -- (1.16) (1.20) CLASS C 2007(c) $5.19 $(0.06) $ 0.32 $ 0.26 -- $(0.06)* -- $(0.06) 2006 5.99 0.04 0.42 0.46 $(0.10) (1.16) -- (1.26) 2005 6.09 0.00(d) 0.38 0.38 (0.17) (0.32) -- (0.49) 2004 6.66 0.03 0.60 0.63 (0.10) (0.34) $(0.76) (1.20) 2003 6.61 0.03 1.22 1.25 (0.07) -- (1.13) (1.20) 2002 8.27 0.02 (0.48) (0.46) (0.04) -- (1.16) (1.20) RATIOS TO AVERAGE NET ASSETS/SUPPLEMENTAL DATA ------------------------------------------------------------------- Net Asset Net Assets Net Operating Operating Period Value, End of Investment Expenses Expenses Portfolio Ended Redemption End of Total Period Income Before Net of Turnover December 31, Fees(a) Period Return+ (in 000's) (Loss) Reimbursement Reimbursement(b) Rate - ------------ ---------- -------- ------- ---------- --------- ------------- ---------------- -------- CLASS AAA 2007(c) $0.00(d) $5.73 5.7% $10,210 (1.36)%(e) 2.55%(e) 2.20%(e) 48% 2006 0.00(d) 5.48 8.4 10,691 1.21 2.14 2.03(f) 130 2005 0.01 6.22 8.0 13,781 0.63 2.11 2.03(f) 58 2004 0.00(d) 6.26 11.7 20,350 1.06 2.06 2.01 60 2003 0.00(d) 6.77 21.5 17,281 1.12 2.07 2.01 54 2002 -- 6.66 (4.9) 9,316 0.97 2.83 2.83 33 CLASS A 2007(c) $0.00(d) $5.73 5.5% $ 67 (1.36)%(e) 2.55%(e) 2.20%(e) 48% 2006 0.00(d) 5.49 8.4 49 1.24 2.14 2.03(f) 130 2005 0.01 6.23 8.2 93 0.68 2.06 2.04(f) 58 2004 0.00(d) 6.26 11.6 598 1.41 2.06 2.01 60 2003 0.00(d) 6.77 21.5 86 1.12 2.07 2.01 54 2002 -- 6.66 (4.7) 2 0.97 2.83 2.83 33 CLASS B 2007(c) $0.00(d) $5.30 5.1% $ 39 (2.15)%(e) 3.30%(e) 2.95%(e) 48% 2006 0.00(d) 5.10 7.6 42 0.47 2.89 2.78(f) 130 2005 0.01 5.91 7.3 73 (0.13) 2.84 2.78(f) 58 2004 0.00(d) 6.01 10.8 133 0.45 2.81 2.76 60 2003 0.00(d) 6.59 20.7 68 0.37 2.82 2.76 54 2002 -- 6.55 (5.6) 24 0.22 3.58 3.58 33 CLASS C 2007(c) $0.00(d) $5.39 5.0% $ 139 (2.17)%(e) 3.30%(e) 2.95%(e) 48% 2006 0.00(d) 5.19 7.8 164 0.57 2.90 2.78(f) 130 2005 0.01 5.99 7.2 145 (0.01) 2.91 2.78(f) 58 2004 0.00(d) 6.09 10.9 95 0.44 2.81 2.76 60 2003 0.00(d) 6.66 20.7 39 0.37 2.82 2.76 54 2002 -- 6.61 (5.3) 13 0.22 3.58 3.58 33 - ------------ + Total return represents aggregate total return of a hypothetical $1,000 investment at the beginning of the period and sold at the end of the period including reinvestment of distributions and does not reflect applicable sales charges. Total return for a period of less than one year is not annualized. * Based on fiscal year to date book income. Amounts are subject to change and recharacterization at fiscal year end. (a) Per share amounts have been calculated using the average shares outstanding method. (b) The Fund incurred interest expense during six months ended June 30, 2007 and the fiscal years ended December 31, 2006, 2005, 2004, 2003, and 2002. If interest expense had not been incurred, the ratios of operating expenses to average net assets would have been 2.00%, 2.00%, 2.00%, 2.00%, 2.00%, and 2.82% (Class AAA), 2.00%, 2.00%, 2.00%, 2.00%, 2.00%, and 2.82% (Class A), 2.75%, 2.75%, 2.75%, 2.75%, 2.75%, and 3.57% (Class B), and 2.75%, 2.75%, 2.75%, 2.75%, 2.75%, and 3.57% (Class C), respectively. (c) For the period ended June 30, 2007, unaudited. (d) Amount represents less than $0.005 per share. (e) Annualized. (f) The ratios do not include a reduction of expenses for custodian fee credits on cash balances maintained with the custodian. Including such custodian fee credits, the expense ratios for the fiscal years ended December 31, 2006 and December 31, 2005 would have been 2.02% and 2.03% (Class AAA), 2.02% and 2.03% (Class A), 2.77% and 2.78% (Class B), and 2.77% and 2.78% (Class C), respectively. See accompanying notes to financial statements. 15 GAMCO Global Series Funds, Inc. THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND One Corporate Center Rye, New York 10580-1422 800-GABELLI 800-422-3554 FAX: 914-921-5118 WEBSITE: WWW.GABELLI.COM E-MAIL: INFO@GABELLI.COM Net Asset Value per share available daily by calling 800-GABELLI after 6:00 P.M. BOARD OF DIRECTORS Mario J. Gabelli, CFA John D. Gabelli CHAIRMAN AND CHIEF SENIOR VICE PRESIDENT EXECUTIVE OFFICER GABELLI & COMPANY, INC. GAMCO INVESTORS, INC. E. Val Cerutti Werner J. Roeder, MD CHIEF EXECUTIVE OFFICER MEDICAL DIRECTOR CERUTTI CONSULTANTS, INC. LAWRENCE HOSPITAL Anthony J. Colavita Anthonie C. van Ekris ATTORNEY-AT-LAW CHAIRMAN ANTHONY J. COLAVITA, P.C. BALMAC INTERNATIONAL, INC. Arthur V. Ferrara Salvatore J. Zizza FORMER CHAIRMAN AND CHAIRMAN CHIEF EXECUTIVE OFFICER ZIZZA & CO., LTD. GUARDIAN LIFE INSURANCE COMPANY OF AMERICA OFFICERS Bruce N. Alpert James E. McKee PRESIDENT SECRETARY Agnes Mullady Peter D. Goldstein TREASURER CHIEF COMPLIANCE OFFICER DISTRIBUTOR Gabelli & Company, Inc. CUSTODIAN, TRANSFER AGENT, AND DIVIDEND AGENT State Street Bank and Trust Company LEGAL COUNSEL Skadden, Arps, Slate, Meagher & Flom LLP - -------------------------------------------------------------------------------- This report is submitted for the general information of the shareholders of The GAMCO Global Convertible Securities Fund. It is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. - -------------------------------------------------------------------------------- GAB441Q207SR GAMCO THE GAMCO GLOBAL CONVERTIBLE SECURITIES FUND SEMI-ANNUAL REPORT JUNE 30, 2007 THE GAMCO GLOBAL GROWTH FUND SEMI-ANNUAL REPORT JUNE 30, 2007 TO OUR SHAREHOLDERS, During the second quarter of 2007, The GAMCO Global Growth Fund (the "Fund") was up 6.7%, while the Morgan Stanley Capital International All Country ("MSCI AC") World Free Index and the Lipper Global Multi-Cap Core Fund Average advanced 7.4% and 6.1%, respectively. For the six month period ended June 30, 2007, the Fund was up 9.8% versus gains of 10.2% and 8.9% for the MSCI AC World Free Index and the Lipper Global Multi-Cap Core Fund Average, respectively. COMPARATIVE RESULTS - --------------------------------------------------------------------------------------------------------------------- AVERAGE ANNUAL RETURNS THROUGH JUNE 30, 2007 (A) ------------------------------------------------ Since Year to Inception Quarter Date 1 Year 3 Year 5 Year 10 Year (2/7/94) - -------------------------------------------------------------------------------------------------------------------- GAMCO GLOBAL GROWTH FUND CLASS AAA (B) ........................... 6.70% 9.77% 19.33% 16.46% 14.65% 10.11% 11.23% MSCI AC World Free Index .................. 7.42 10.19 25.83 18.57 15.44 7.64 9.13 Lipper Global Multi-Cap Core Fund Average . 6.10 8.85 21.68 20.12 17.17 6.52 9.23 Class A ................................... 6.70 9.77 19.28 16.46 14.66 10.12 11.24 0.56(c) 3.46(c) 12.42(c) 14.18(c) 13.31(c) 9.47(c) 10.75(c) Class B ................................... 6.52 9.39 18.40 15.59 13.81 9.55 10.81 1.52(d) 4.39(d) 13.40(d) 14.84(d) 13.57(d) 9.55 10.81 Class C ................................... 6.55 9.37 18.47 15.59 13.81 9.52 10.78 5.55(e) 8.37(e) 17.47(e) 15.59 13.81 9.52 10.78 THE CURRENT EXPENSE RATIO FOR CLASS AAA, A, B, AND C SHARES IS 1.78%, 1.78%, 2.53%, AND 2.53%, RESPECTIVELY. CLASS AAA SHARES DO NOT HAVE A SALES CHARGE. THE MAXIMUM SALES CHARGE FOR CLASS A, B, AND C SHARES IS 5.75%, 5.00%, AND 1.00%, RESPECTIVELY. (a) RETURNS REPRESENT PAST PERFORMANCE AND DO NOT GUARANTEE FUTURE RESULTS. TOTAL RETURNS AND AVERAGE ANNUAL RETURNS REFLECT CHANGES IN SHARE PRICE AND REINVESTMENT OF DISTRIBUTIONS AND ARE NET OF EXPENSES. INVESTMENT RETURNS AND THE PRINCIPAL VALUE OF AN INVESTMENT WILL FLUCTUATE. WHEN SHARES ARE REDEEMED, THEY MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PERFORMANCE RETURNS FOR PERIODS LESS THAN ONE YEAR ARE NOT ANNUALIZED. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE DATA PRESENTED. VISIT WWW.GABELLI.COM FOR PERFORMANCE INFORMATION AS OF THE MOST RECENT MONTH END. INVESTORS SHOULD CAREFULLY CONSIDER THE INVESTMENT OBJECTIVES, RISKS, CHARGES, AND EXPENSES OF THE FUND BEFORE INVESTING. THE PROSPECTUS CONTAINS MORE INFORMATION ABOUT THIS AND OTHER MATTERS AND SHOULD BE READ CAREFULLY BEFORE INVESTING. THE CLASS AAA SHARES' NET ASSET VALUES ("NAV'S") PER SHARE ARE USED TO CALCULATE PERFORMANCE FOR THE PERIODS PRIOR TO THE ISSUANCE OF CLASS A SHARES, CLASS B SHARES, AND CLASS C SHARES ON MARCH 2, 2000, MAY 5, 2000, AND MARCH 12, 2000, RESPECTIVELY. THE ACTUAL PERFORMANCE FOR THE CLASS B SHARES AND CLASS C SHARES WOULD HAVE BEEN LOWER DUE TO THE ADDITIONAL EXPENSES ASSOCIATED WITH THESE CLASSES OF SHARES. INVESTING IN FOREIGN SECURITIES INVOLVES RISKS NOT ORDINARILY ASSOCIATED WITH INVESTMENTS IN DOMESTIC ISSUES, INCLUDING CURRENCY FLUCTUATION, ECONOMIC, AND POLITICAL RISKS. THE MORGAN STANLEY CAPITAL INTERNATIONAL ALL COUNTRY WORLD FREE INDEX (THE "MSCI AC WORLD FREE INDEX") IS AN UNMANAGED INDICATOR OF STOCK MARKET PERFORMANCE, WHILE THE LIPPER GLOBAL MULTI-CAP CORE FUND AVERAGE REFLECTS THE AVERAGE PERFORMANCE OF MUTUAL FUNDS CLASSIFIED IN THIS PARTICULAR CATEGORY. DIVIDENDS ARE CONSIDERED REINVESTED. YOU CANNOT INVEST DIRECTLY IN AN INDEX. (b) EFFECTIVE FEBRUARY 15, 2007, CLASS AAA SHARES ARE OFFERED ONLY TO INVESTORS WHO WERE SHAREHOLDERS IN ONE OR MORE OF THE REGISTERED FUNDS DISTRIBUTED BY GABELLI & COMPANY, INC. PRIOR TO FEBRUARY 15, 2007. (c) INCLUDES THE EFFECT OF THE MAXIMUM 5.75% SALES CHARGE AT THE BEGINNING OF THE PERIOD. (d) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS B SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, ONE YEAR, THREE YEAR, AND FIVE YEAR PERIODS OF 5%, 5%, 5%, 3%, AND 2%, RESPECTIVELY, OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. CLASS B SHARES ARE NOT AVAILABLE FOR NEW PURCHASES. (e) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS C SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, AND ONE YEAR PERIODS OF 1% OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- We have separated the portfolio managers' commentary from the financial statements and investment portfolio due to corporate governance regulations stipulated by the Sarbanes-Oxley Act of 2002. We have done this to ensure that the content of the portfolio managers' commentary is unrestricted. The financial statements and investment portfolio are mailed separately from the commentary. Both the commentary and the financial statements, including the portfolio of investments, will be available on our website at www.gabelli.com/funds. - -------------------------------------------------------------------------------- THE GAMCO GLOBAL GROWTH FUND DISCLOSURE OF FUND EXPENSES (UNAUDITED) For the Six Month Period from January 1, 2007 through June 30, 2007 EXPENSE TABLE ================================================================================ We believe it is important for you to understand the impact of fees and expenses regarding your investment. All mutual funds have operating expenses. As a shareholder of a fund, you incur ongoing costs, which include costs for portfolio management, administrative services, and shareholder reports (like this one), among others. Operating expenses, which are deducted from a fund's gross income, directly reduce the investment return of a fund. When a fund's expenses are expressed as a percentage of its average net assets, this figure is known as the expense ratio. The following examples are intended to help you understand the ongoing costs (in dollars) of investing in your Fund and to compare these costs with those of other mutual funds. The examples are based on an investment of $1,000 made at the beginning of the period shown and held for the entire period. The Expense Table below illustrates your Fund's costs in two ways: ACTUAL FUND RETURN: This section provides information about actual account values and actual expenses. You may use this section to help you to estimate the actual expenses that you paid over the period after any fee waivers and expense reimbursements. The "Ending Account Value" shown is derived from the Fund's ACTUAL return during the past six months, and the "Expenses Paid During Period" shows the dollar amount that would have been paid by an investor who started with $1,000 in the Fund. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. To do so, simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number given for your Fund under the heading "Expenses Paid During Period" to estimate the expenses you paid during this period. HYPOTHETICAL 5% RETURN: This section provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio. It assumes a hypothetical annualized return of 5% before expenses during the period shown. In this case - because the hypothetical return used is NOT the Fund's actual return - the results do not apply to your investment and you cannot use the hypothetical account value and expense to estimate the actual ending account balance or expenses you paid for the period. This example is useful in making comparisons of the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in shareholder reports of other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs such as sales charges (loads), redemption fees, or exchange fees, if any, which are described in the Prospectus. If these costs were applied to your account, your costs would be higher. Therefore, the 5% hypothetical return is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. Beginning Ending Annualized Expenses Account Value Account Value Expense Paid During 01/01/07 06/30/07 Ratio Period* - -------------------------------------------------------------------------------- THE GAMCO GLOBAL GROWTH FUND - -------------------------------------------------------------------------------- ACTUAL FUND RETURN Class AAA $1,000.00 $1,097.70 1.76% $ 9.20 Class A $1,000.00 $1,097.70 1.76% $ 9.20 Class B $1,000.00 $1,093.90 2.51% $13.10 Class C $1,000.00 $1,093.70 2.50% $13.05 HYPOTHETICAL 5% RETURN Class AAA $1,000.00 $1,016.16 1.76% $ 8.85 Class A $1,000.00 $1,016.16 1.76% $ 8.85 Class B $1,000.00 $1,012.42 2.51% $12.59 Class C $1,000.00 $1,012.47 2.50% $12.54 * Expenses are equal to the Fund's annualized expense ratio for the last six months multiplied by the average account value over the period, multiplied by the number of days in the most recent fiscal half-year, then divided by 365. 2 SUMMARY OF PORTFOLIO HOLDINGS (UNAUDITED) The following table presents portfolio holdings as a percent of total net assets as of June 30, 2007: THE GAMCO GLOBAL GROWTH FUND Financial Services ................................ 15.4% Energy and Utilities .............................. 9.9% Health Care ....................................... 9.2% Food and Beverage ................................. 8.4% Computer Software and Services .................... 7.8% Metals and Mining ................................. 5.8% Telecommunications ................................ 5.5% Retail ............................................ 5.5% Exchange Traded Funds ............................. 4.2% Consumer Products ................................. 4.1% Diversified Industrial ............................ 3.6% Aerospace ......................................... 3.1% Electronics ....................................... 2.8% Hotels and Gaming ................................. 2.8% Entertainment ..................................... 2.2% Building and Construction ......................... 1.9% Equipment and Supplies ............................ 1.6% Cable and Satellite ............................... 1.3% Chemicals and Allied Products ..................... 0.9% Automotive ........................................ 0.9% Business Services ................................. 0.7% Broadcasting ...................................... 0.7% U.S. Government Obligations ....................... 0.6% Environmental Services ............................ 0.5% Transportation .................................... 0.4% Wireless Communications ........................... 0.3% Other Assets and Liabilities (Net) ................ (0.1)% ------- 100.0% ======= THE FUND FILES A COMPLETE SCHEDULE OF PORTFOLIO HOLDINGS WITH THE SECURITIES AND EXCHANGE COMMISSION (THE "SEC") FOR THE FIRST AND THIRD QUARTERS OF EACH FISCAL YEAR ON FORM N-Q, THE LAST OF WHICH WAS FILED FOR THE QUARTER ENDED MARCH 31, 2007. SHAREHOLDERS MAY OBTAIN THIS INFORMATION AT WWW.GABELLI.COM OR BY CALLING THE FUND AT 800-GABELLI (800-422-3554). THE FUND'S FORM N-Q IS AVAILABLE ON THE SEC'S WEBSITE AT WWW.SEC.GOV AND MAY ALSO BE REVIEWED AND COPIED AT THE SEC'S PUBLIC REFERENCE ROOM IN WASHINGTON, DC. INFORMATION ON THE OPERATION OF THE PUBLIC REFERENCE ROOM MAY BE OBTAINED BY CALLING 1-800-SEC-0330. PROXY VOTING The Fund files Form N-PX with its complete proxy voting record for the 12 months ended June 30th, no later than August 31st of each year. A description of the Fund's proxy voting policies, procedures, and how the Fund voted proxies relating to portfolio securities is available without charge, upon request, by (i) calling 800-GABELLI (800-422-3554); (ii) writing to The Gabelli Funds at One Corporate Center, Rye, NY 10580-1422; or (iii) visiting the SEC's website at www.sec.gov. 3 THE GAMCO GLOBAL GROWTH FUND SCHEDULE OF INVESTMENTS -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS -- 99.5% AEROSPACE -- 3.1% 5,000 General Dynamics Corp. ........... $ 345,708 $ 391,100 6,000 L-3 Communications Holdings Inc. .................. 463,245 584,340 9,000 Rockwell Collins Inc. ............ 516,913 635,760 90,000 Rolls-Royce Group plc+ ........... 751,339 969,076 5,328,000 Rolls-Royce Group plc, Cl. B ..... 10,439 10,913 9,000 United Technologies Corp. ........ 442,069 638,370 ------------ ------------ 2,529,713 3,229,559 ------------ ------------ AUTOMOTIVE -- 0.9% 7,000 Honda Motor Co. Ltd., ADR ........ 271,473 254,030 5,000 Toyota Motor Corp., ADR .......... 668,331 629,400 ------------ ------------ 939,804 883,430 ------------ ------------ BROADCASTING -- 0.7% 5,200 Nippon Television Network Corp. .......................... 771,307 709,631 ------------ ------------ BUILDING AND CONSTRUCTION -- 1.9% 5,000 CRH plc, Dublin .................. 120,555 247,096 15,000 CRH plc, London .................. 361,664 738,539 4,000 Fomento de Construcciones y Contratas SA ................. 138,679 359,873 8,000 Technip SA ....................... 266,839 661,220 ------------ ------------ 887,737 2,006,728 ------------ ------------ BUSINESS SERVICES -- 0.7% 16,000 Secom Co. Ltd. ................... 620,342 754,830 ------------ ------------ CABLE AND SATELLITE -- 1.3% 17,250 Comcast Corp., Cl. A+ ............ 450,975 485,070 20,000 Rogers Communications Inc., Cl. B .......................... 648,227 849,800 ------------ ------------ 1,099,202 1,334,870 ------------ ------------ CHEMICALS AND ALLIED PRODUCTS -- 0.9% 10,000 E.I. du Pont de Nemours & Co. .... 527,437 508,400 50,000 Tokai Carbon Co. Ltd. ............ 205,108 467,814 ------------ ------------ 732,545 976,214 ------------ ------------ COMPUTER SOFTWARE AND SERVICES -- 7.8% 17,000 Adobe Systems Inc.+ .............. 565,398 682,550 7,000 Akamai Technologies Inc.+ ........ 379,685 340,480 6,000 Apple Inc.+ ...................... 531,198 732,240 28,000 Cisco Systems Inc.+ .............. 604,820 779,800 15,000 eBay Inc.+ ....................... 542,820 482,700 5,700 Google Inc., Cl. A+ .............. 1,781,911 2,983,266 23,000 Microsoft Corp. .................. 634,700 677,810 4,700 Research In Motion Ltd.+ ......... 684,660 939,953 17,000 Yahoo! Inc.+ ..................... 607,440 461,210 ------------ ------------ 6,332,632 8,080,009 ------------ ------------ MARKET SHARES COST VALUE ------ ---- ------- CONSUMER PRODUCTS -- 4.1% 7,000 Christian Dior SA ................ $ 438,852 $ 905,850 15,314 Compagnie Financiere Richemont SA, Cl. A ............ 443,000 915,337 1,500 Nintendo Co. Ltd. ................ 448,147 547,265 12,500 Procter & Gamble Co. ............. 698,207 764,875 4,000 Swatch Group AG .................. 464,406 1,136,277 ------------ ------------ 2,492,612 4,269,604 ------------ ------------ DIVERSIFIED INDUSTRIAL -- 3.6% 10,000 Bouygues SA ...................... 343,461 837,853 15,000 Emerson Electric Co. ............. 635,717 702,000 39,000 General Electric Co. ............. 1,395,696 1,492,920 10,000 ITT Corp. ........................ 440,031 682,800 ------------ ------------ 2,814,905 3,715,573 ------------ ------------ ELECTRONICS -- 2.8% 3,700 Fanuc Ltd. ....................... 325,019 381,889 21,000 Intel Corp. ...................... 467,600 498,960 9,000 MEMC Electronic Materials Inc.+ .......................... 497,238 550,080 10,000 Microchip Technology Inc. ........ 287,500 370,400 10,000 NVIDIA Corp.+ .................... 351,282 413,100 20,000 Texas Instruments Inc. ........... 508,831 752,600 ------------ ------------ 2,437,470 2,967,029 ------------ ------------ ENERGY AND UTILITIES -- 9.9% 12,000 Apache Corp. ..................... 857,509 979,080 13,500 Canadian Natural Resources Ltd. ................. 705,109 895,725 5,672 Devon Energy Corp. ............... 278,827 444,061 9,000 EnCana Corp. ..................... 433,151 553,050 6,000 GlobalSantaFe Corp. .............. 347,693 433,500 9,000 Hess Corp. ....................... 433,185 530,640 6,900 Imperial Oil Ltd. ................ 253,504 321,212 5,500 National Oilwell Varco Inc.+ ..... 391,704 573,320 9,000 Noble Corp. ...................... 652,726 877,680 23,000 Occidental Petroleum Corp. ....... 1,061,833 1,331,240 10,000 Saipem SpA ....................... 240,421 341,205 5,200 Sasol Ltd. ....................... 238,250 195,228 2,000 Sasol Ltd., ADR .................. 76,260 75,080 5,000 Schlumberger Ltd. ................ 158,943 424,700 10,900 Suncor Energy Inc. ............... 829,274 980,128 7,000 Transocean Inc.+ ................. 361,090 741,860 10,000 XTO Energy Inc. .................. 473,259 601,000 ------------ ------------ 7,792,738 10,298,709 ------------ ------------ ENTERTAINMENT -- 2.2% 36,000 Publishing and Broadcasting Ltd. .............. 180,793 596,580 17,000 Time Warner Inc. ................. 357,610 357,680 12,300 Viacom Inc., Cl. B+ .............. 478,662 512,049 20,180 Vivendi .......................... 436,833 868,098 ------------ ------------ 1,453,898 2,334,407 ------------ ------------ See accompanying notes to financial statements. 4 THE GAMCO GLOBAL GROWTH FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS (CONTINUED) ENVIRONMENTAL SERVICES -- 0.5% 6,500 Veolia Environnement ............. $ 495,362 $ 510,516 ------------ ------------ EQUIPMENT AND SUPPLIES -- 1.6% 5,500 Canon Inc. ....................... 302,383 322,536 4,000 Canon Inc., ADR .................. 219,051 234,560 3,900 Keyence Corp. .................... 791,420 852,000 11,000 Nikon Corp. ...................... 247,210 306,342 ------------ ------------ 1,560,064 1,715,438 ------------ ------------ EXCHANGE TRADED FUNDS -- 4.2% 15,500 iShares MSCI Emerging Markets Index Fund ............. 1,563,036 2,040,575 25,500 Vanguard Emerging Markets ETF .................... 1,934,860 2,327,895 ------------ ------------ 3,497,896 4,368,470 ------------ ------------ FINANCIAL SERVICES -- 15.4% 5,000 Affiliated Managers Group Inc.+ .................... 483,000 643,800 5,500 Allianz SE ....................... 704,835 1,289,942 15,500 American Express Co. ............. 842,758 948,290 50,000 Anglo Irish Bank Corp. plc ....... 117,562 1,026,173 30,000 Australia & New Zealand Banking Group Ltd. ............. 505,275 736,835 30,000 Aviva plc ........................ 320,646 445,342 29,039 Bank of Ireland, Ireland ......... 280,065 586,601 10,000 Bank of Ireland, London .......... 159,392 201,468 50,000 Barclays plc ..................... 655,833 695,646 1,533 China Life Insurance Co. Ltd., ADR .................. 35,142 82,276 7,400 Julius Baer Holding Ltd. AG ...... 353,875 529,468 5,895 Merrill Lynch & Co. Inc. ......... 334,931 492,704 9,000 Millea Holdings Inc., ADR ........ 333,118 369,360 40 Mitsubishi UFJ Financial Group Inc. ..................... 486,680 440,828 4,000 Moody's Corp. .................... 272,988 248,800 6,000 Morgan Stanley ................... 502,729 503,280 14,000 Nomura Holdings Inc. ............. 280,168 271,927 22,000 Nomura Holdings Inc., ADR ........ 484,875 427,240 8,200 Royal Bank of Canada ............. 351,545 435,845 42,700 Standard Chartered plc ........... 878,245 1,392,762 7,000 State Street Corp. ............... 338,771 478,800 10,000 T. Rowe Price Group Inc. ......... 408,771 518,900 5,000 The Goldman Sachs Group Inc. ..................... 805,381 1,083,750 6,250 Toronto-Dominion Bank ............ 353,908 427,482 9,000 UBS AG, New York ................. 370,335 540,090 4,000 UBS AG, Switzerland .............. 136,647 239,217 44,500 Westpac Banking Corp. ............ 703,450 966,307 ------------ ------------ 11,500,925 16,023,133 ------------ ------------ MARKET SHARES COST VALUE ------ ---- ------- FOOD AND BEVERAGE -- 8.4% 33,000 Ajinomoto Co. Inc. ............... $ 382,303 $ 380,102 60,000 Cadbury Schweppes plc ............ 592,403 814,345 16,996 Coca-Cola Hellenic Bottling Co. SA ......................... 358,399 782,113 90,000 Davide Campari-Milano SpA ........ 418,375 942,284 70,000 Diageo plc ....................... 891,438 1,454,944 12,000 Groupe Danone .................... 669,806 969,194 3,000 Nestle SA ........................ 850,228 1,139,921 9,000 PepsiCo Inc. ..................... 495,029 583,650 4,515 Pernod-Ricard SA ................. 401,452 996,855 10,000 Starbucks Corp.+ ................. 301,870 262,400 46,000 Tesco plc ........................ 395,588 384,868 ------------ ------------ 5,756,891 8,710,676 ------------ ------------ HEALTH CARE -- 9.2% 4,000 Alcon Inc. ....................... 452,343 539,640 7,000 Celgene Corp.+ ................... 425,664 401,310 5,700 Genentech Inc.+ .................. 324,270 431,262 9,800 Gilead Sciences Inc.+ ............ 316,355 379,946 20,000 GlaxoSmithKline plc .............. 423,287 521,000 16,000 Hisamitsu Pharmaceutical Co. Inc. ....................... 331,635 441,484 15,000 Novartis AG ...................... 615,193 842,109 10,000 Novo Nordisk A/S, ADR ............ 797,927 1,086,600 4,300 Roche Holding AG ................. 343,824 761,902 18,000 Schering-Plough Corp. ............ 453,841 547,920 9,000 St. Jude Medical Inc.+ ........... 380,450 373,410 2,400 Straumann Holding AG ............. 504,079 672,805 8,300 Stryker Corp. .................... 393,639 523,647 4,800 Synthes Inc. ..................... 398,130 577,258 10,000 Takeda Pharmaceutical Co. Ltd. ....................... 445,295 646,014 7,000 UnitedHealth Group Inc. .......... 371,826 357,980 6,000 Zimmer Holdings Inc.+ ............ 496,447 509,340 ------------ ------------ 7,474,205 9,613,627 ------------ ------------ HOTELS AND GAMING -- 2.8% 50 Greek Organization of Football Prognostics SA ........ 821 1,767 12,000 Hilton Hotels Corp. .............. 317,652 401,640 31,054 InterContinental Hotels Group plc ...................... 759,700 771,395 71,803 Ladbrokes plc .................... 723,006 620,759 5,000 Las Vegas Sands Corp.+ ........... 402,372 381,950 7,000 Marriott International Inc., Cl. A .................... 266,140 302,680 6,000 Starwood Hotels & Resorts Worldwide Inc. ......... 365,386 402,420 ------------ ------------ 2,835,077 2,882,611 ------------ ------------ See accompanying notes to financial statements. 5 THE GAMCO GLOBAL GROWTH FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS (CONTINUED) METALS AND MINING -- 5.8% 4,000 Allegheny Technologies Inc. ...... $ 300,030 $ 419,520 15,000 Anglo American plc ............... 546,531 880,677 20,000 BHP Billiton plc ................. 317,858 555,577 10,500 Commercial Metals Co. ............ 235,905 354,585 7,200 Companhia Vale do Rio Doce, ADR ...................... 270,562 320,760 9,000 Lonmin plc ....................... 545,871 722,523 5,228 Peabody Energy Corp. ............. 66,790 252,930 16,000 Rio Tinto plc .................... 587,295 1,224,061 14,000 Titanium Metals Corp.+ ........... 434,402 446,600 14,666 Xstrata plc ...................... 376,296 873,111 ------------ ------------ 3,681,540 6,050,344 ------------ ------------ RETAIL -- 5.5% 9,000 Coach Inc.+ ...................... 258,847 426,510 11,000 CVS Caremark Corp. ............... 387,900 400,950 12,150 Hennes & Mauritz AB, Cl. B ....... 512,220 718,381 6,000 Kohl's Corp.+ .................... 390,884 426,180 15,000 Next plc ......................... 507,851 602,209 7,000 Nordstrom Inc. ................... 372,399 357,840 24,000 Seven & I Holdings Co. Ltd. ...... 813,032 686,049 9,000 Tiffany & Co. .................... 290,462 477,540 10,000 Walgreen Co. ..................... 410,654 435,400 8,000 Whole Foods Market Inc. .......... 399,510 306,400 39,100 Woolworths Ltd. .................. 607,675 893,549 ------------ ------------ 4,951,434 5,731,008 ------------ ------------ TELECOMMUNICATIONS -- 5.5% 18,000 America Movil SAB de CV, Cl. L, ADR ..................... 814,388 1,114,740 19,000 AT&T Inc. ........................ 694,095 788,500 15,000 China Mobile Ltd., ADR ........... 729,144 808,500 10,000 Harris Corp. ..................... 491,370 545,500 85 KDDI Corp. ....................... 432,573 629,683 30,000 NTT DoCoMo Inc., ADR ............. 551,431 474,000 13,000 Verizon Communications Inc. ...... 456,054 535,210 25,000 Vodafone Group plc, ADR .......... 737,433 840,750 ------------ ------------ 4,906,488 5,736,883 ------------ ------------ TRANSPORTATION -- 0.4% 10,000 Expeditors International of Washington Inc. ................ 426,255 413,000 ------------ ------------ WIRELESS COMMUNICATIONS -- 0.3% 8,000 QUALCOMM Inc. .................... 361,680 347,120 ------------ ------------ TOTAL COMMON STOCKS .............. 78,352,722 103,663,419 ------------ ------------ PRINICPAL MARKET AMOUNT COST VALUE ------ ---- ------- U.S. GOVERNMENT OBLIGATIONS -- 0.6% $642,000 U.S. Treasury Bills, 4.599% to 4.911%++, 07/19/07 to 09/20/07 ........... $ 636,438 $ 636,267 ------------ ------------ TOTAL INVESTMENTS -- 100.1% .......... $ 78,989,160 104,299,686 ============ OTHER ASSETS AND LIABILITIES (NET) -- (0.1)% ..... (72,302) ------------ NET ASSETS -- 100.0% ............................. $104,227,384 ============ - ---------------- + Non-income producing security. ++ Represents annualized yield at date of purchase. ADR American Depository Receipt % OF MARKET MARKET GEOGRAPHIC DIVERSIFICATION VALUE VALUE - -------------------------- -------- ------- North America ........................ 48.5% $ 50,636,755 Europe ............................... 33.7 35,168,352 Japan ................................ 9.8 10,226,984 Asia/Pacific ......................... 3.9 4,084,047 Latin America ........................ 3.8 3,913,240 South Africa ......................... 0.3 270,308 ------ ------------ 100.0% $104,299,686 ====== ============ See accompanying notes to financial statements. 6 THE GAMCO GLOBAL GROWTH FUND STATEMENT OF ASSETS AND LIABILITIES JUNE 30, 2007 (UNAUDITED) ================================================================================ ASSETS: Investments, at value (cost $78,989,160) ...... $ 104,299,686 Foreign currency, at value (cost $12,356) ..... 11,834 Cash .......................................... 2,087 Deposit at broker ............................. 58 Receivable for Fund shares sold ............... 5,430 Dividends and interest receivable ............. 254,621 Prepaid expense ............................... 2,381 ------------- TOTAL ASSETS .................................. 104,576,097 ------------- LIABILITIES: Payable for Fund shares redeemed .............. 87,344 Payable for investment advisory fees .......... 88,909 Payable for distribution fees ................. 22,581 Payable for legal and audit fees .............. 55,706 Payable for shareholder communications expenses ..................... 40,953 Payable for shareholder services fees ......... 34,720 Payable for accounting fees ................... 3,872 Other accrued expenses ........................ 14,628 ------------- TOTAL LIABILITIES ............................. 348,713 ------------- NET ASSETS applicable to 4,142,438 shares outstanding .......................... $ 104,227,384 ============= NET ASSETS CONSIST OF: Paid-in capital, each class at $0.001 par value $ 129,112,347 Accumulated net investment income ............. 141,696 Accumulated net realized loss on investments and foreign currency transactions ........... (50,342,136) Net unrealized appreciation on investments .... 25,310,526 Net unrealized appreciation on foreign currency translations ....................... 4,951 ------------- NET ASSETS .................................... $ 104,227,384 ============= SHARES OF CAPITAL STOCK: CLASS AAA: Net Asset Value, offering and redemption price per share ($101,957,934 / 4,051,256 shares outstanding; 75,000,000 shares authorized) .. $25.17 ====== CLASS A: Net Asset Value and redemption price per share ($1,767,235 / 70,204 shares outstanding; 50,000,000 shares authorized) .. $25.17 ====== Maximum offering price per share (NAV / .9425, based on maximum sales charge of 5.75% of the offering price) ...................... $26.71 ====== CLASS B: Net Asset Value and offering price per share ($252,949 / 10,541 shares outstanding; 25,000,000 shares authorized) ............... $24.00(a) ====== CLASS C: Net Asset Value and offering price per share ($249,266 / 10,437 shares outstanding 25,000,000 shares authorized) ............... $23.88(a) ====== - ------------------- (a) Redemption price varies based on the length of time held. STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED JUNE 30, 2007 (UNAUDITED) ================================================================================ INVESTMENT INCOME: Dividends (net of foreign taxes of $36,058) ........... $ 1,017,147 Interest .............................................. 20,926 ----------- TOTAL INVESTMENT INCOME ............................... 1,038,073 ----------- EXPENSES: Investment advisory fees .............................. 510,400 Distribution fees - Class AAA ......................... 125,186 Distribution fees - Class A ........................... 1,762 Distribution fees - Class B ........................... 1,175 Distribution fees - Class C ........................... 1,431 Shareholder services fees ............................. 76,483 Shareholder communications expenses ................... 59,356 Legal and audit fees .................................. 35,886 Accounting fees ....................................... 22,621 Custodian fees ........................................ 20,334 Registration expenses ................................. 17,701 Directors' fees ....................................... 5,121 Interest expense ...................................... 604 Miscellaneous expenses ................................ 20,988 ----------- TOTAL EXPENSES ........................................ 899,048 Less: Custodian fee credits ........................... (2) ----------- NET EXPENSES .......................................... 899,046 ----------- NET INVESTMENT INCOME ................................. 139,027 ----------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY: Net realized gain on investments ...................... 3,892,481 Net realized gain on foreign currency transactions ............................... 3,842 ----------- Net realized gain on investments and foreign currency transactions ....................... 3,896,323 ----------- Net change in unrealized appreciation/ depreciation on investments ......................... 5,481,029 Net change in unrealized appreciation/ depreciation on foreign currency translations ....... (3,968) ----------- Net change in unrealized appreciation/ depreciation on investments and foreign currency translations ....................... 5,477,061 ----------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY ................. 9,373,384 ----------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ..................................... $ 9,512,411 =========== See accompanying notes to financial statements. 7 THE GAMCO GLOBAL GROWTH FUND STATEMENT OF CHANGES IN NET ASSETS ================================================================================ SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 --------------- ----------------- OPERATIONS: Net investment income ............................................ $ 139,027 $ 277,720 Net realized gain on investments and foreign currency transactions 3,896,323 14,070,539 Net change in unrealized appreciation/depreciation on investments and foreign currency translations .............................. 5,477,061 (1,920,801) ------------- ------------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ............. 9,512,411 12,427,458 ------------- ------------- DISTRIBUTIONS TO SHAREHOLDERS: Net investment income: Class AAA ...................................................... -- (272,763) Class A ........................................................ -- (3,545) ------------- ------------- TOTAL DISTRIBUTIONS TO SHAREHOLDERS .............................. -- (276,308) ------------- ------------- CAPITAL SHARE TRANSACTIONS: Class AAA ...................................................... (8,261,054) (19,507,826) Class A ........................................................ 343,263 (2,805) Class B ........................................................ 6,654 (60) Class C ........................................................ (50,711) 14,905 ------------- ------------- NET DECREASE IN NET ASSETS FROM CAPITAL SHARE TRANSACTIONS ....... (7,961,848) (19,495,786) ------------- ------------- REDEMPTION FEES .................................................. 26 148 ------------- ------------- NET INCREASE (DECREASE) IN NET ASSETS ............................ 1,550,589 (7,344,488) NET ASSETS: Beginning of period .............................................. 102,676,795 110,021,283 ------------- ------------- End of period (including undistributed net investment income of $141,696 and $2,669, respectively) .......................... $ 104,227,384 $ 102,676,795 ============= ============= NOTES TO FINANCIAL STATEMENTS (UNAUDITED) ================================================================================ 1. ORGANIZATION. The GAMCO Global Growth Fund (the "Fund"), formerly The Gabelli Global Growth Fund, a series of GAMCO Global Series Funds, Inc. (the "Corporation"), formerly Gabelli Global Series Funds, Inc., was organized on July 16, 1993 as a Maryland corporation. The Fund is a non-diversified open-end management investment company registered under the Investment Company Act of 1940, as amended (the "1940 Act"), and one of four separately managed portfolios (collectively, the "Portfolios") of the Corporation. The Fund's primary objective is capital appreciation. The Fund commenced investment operations on February 7, 1994. 2. SIGNIFICANT ACCOUNTING POLICIES. The preparation of financial statements in accordance with United States ("U.S.") generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements. SECURITY VALUATION. Portfolio securities listed or traded on a nationally recognized securities exchange or traded in the U.S. over-the-counter market for which market quotations are readily available are valued at the last quoted sale price or a market's official closing price as of the close of business on the day the securities are being valued. If there were no sales that day, the security is valued at the average of the closing bid and asked prices or, if there were no asked prices quoted on that day, then the security is valued at the closing bid 8 THE GAMCO GLOBAL GROWTH FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ price on that day. If no bid or asked prices are quoted on such day, the security is valued at the most recently available price or, if the Board of Directors (the "Board") so determines, by such other method as the Board shall determine in good faith to reflect its fair market value. Portfolio securities traded on more than one national securities exchange or market are valued according to the broadest and most representative market, as determined by Gabelli Funds, LLC (the "Adviser"). Portfolio securities primarily traded on a foreign market are generally valued at the preceding closing values of such securities on the relevant market, but may be fair valued pursuant to procedures established by the Board if market conditions change significantly after the close of the foreign market but prior to the close of business on the day the securities are being valued. Debt instruments with remaining maturities of 60 days or less that are not credit impaired are valued at amortized cost, unless the Board determines such amount does not reflect the securities' fair value, in which case these securities will be fair valued as determined by the Board. Debt instruments having a maturity greater than 60 days for which market quotations are readily available are valued at the average of the latest bid and asked prices. If there were no asked prices quoted on such day, the security is valued using the closing bid price. Futures contracts are valued at the closing settlement price of the exchange or board of trade on which the applicable contract is traded. Securities and assets for which market quotations are not readily available are fair valued as determined by the Board. Fair valuation methodologies and procedures may include, but are not limited to: analysis and review of available financial and non-financial information about the company; comparisons to the valuation and changes in valuation of similar securities, including a comparison of foreign securities to the equivalent U.S. dollar value ADR securities at the close of the U.S. exchange; and evaluation of any other information that could be indicative of the value of the security. In September 2006, the Financial Accounting Standards Board (the "FASB") issued Statement of Financial Accounting Standards ("SFAS") 157, Fair Value Measurements, which clarifies the definition of fair value and requires companies to expand their disclosure about the use of fair value to measure assets and liabilities in interim and annual periods subsequent to initial recognition. Adoption of SFAS 157 requires the use of the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. SFAS 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. At this time, management is in the process of reviewing the requirements of SFAS 157 against its current valuation policies to determine future applicability. REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with primary government securities dealers recognized by the Federal Reserve Board, with member banks of the Federal Reserve System, or with other brokers or dealers that meet credit guidelines established by the Adviser and reviewed by the Board. Under the terms of a typical repurchase agreement, the Fund takes possession of an underlying debt obligation subject to an obligation of the seller to repurchase, and the Fund to resell, the obligation at an agreed-upon price and time, thereby determining the yield during the Fund's holding period. The Fund will always receive and maintain securities as collateral whose market value, including accrued interest, will be at least equal to 102% of the dollar amount invested by the Fund in each agreement. The Fund will make payment for such securities only upon physical delivery or upon evidence of book entry transfer of the collateral to the account of the custodian. To the extent that any repurchase transaction exceeds one business day, the value of the collateral is marked-to-market on a daily basis to maintain the adequacy of the collateral. If the seller defaults and the value of the collateral declines or if bankruptcy proceedings are commenced with respect to the seller of the security, realization of the collateral by the Fund may be delayed or limited. At June 30, 2007, there were no open repurchase agreements. 9 THE GAMCO GLOBAL GROWTH FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ FUTURES CONTRACTS. The Fund may engage in futures contracts for the purpose of hedging against changes in the value of its portfolio securities and in the value of securities it intends to purchase. Upon entering into a futures contract, the Fund is required to deposit with the broker an amount of cash or cash equivalents equal to a certain percentage of the contract amount. This is known as the "initial margin". Subsequent payments ("variation margin") are made or received by the Fund each day, depending on the daily fluctuations in the value of the contract, which are included in unrealized appreciation/depreciation on investments and futures contracts. The Fund recognizes a realized gain or loss when the contract is closed. There are several risks in connection with the use of futures contracts as a hedging instrument. The change in value of futures contracts primarily corresponds with the value of their underlying instruments, which may not correlate with the change in value of the hedged investments. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid secondary market. At June 30, 2007, there were no open futures contracts. SECURITIES SOLD SHORT. The Fund may enter into short sale transactions. Short selling involves selling securities that may or may not be owned and, at times, borrowing the same securities for delivery to the purchaser, with an obligation to replace such borrowed securities at a later date. The proceeds received from short sales are recorded as liabilities and the Fund records an unrealized gain or loss to the extent of the difference between the proceeds received and the value of an open short position on the day of determination. The Fund records a realized gain or loss when the short position is closed out. By entering into a short sale, the Fund bears the market risk of an unfavorable change in the price of the security sold short. Dividends on short sales are recorded as an expense by the Fund on the ex-dividend date and interest expense is recorded on the accrual basis. The Fund did not hold any short positions as of June 30, 2007. FORWARD FOREIGN EXCHANGE CONTRACTS. The Fund may engage in forward foreign exchange contracts for hedging a specific transaction with respect to either the currency in which the transaction is denominated or another currency as deemed appropriate by the Adviser. Forward foreign exchange contracts are valued at the forward rate and are marked-to-market daily. The change in market value is included in unrealized appreciation/depreciation on investments and foreign currency translations. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. The use of forward foreign exchange contracts does not eliminate fluctuations in the underlying prices of the Fund's portfolio securities, but it does establish a rate of exchange that can be achieved in the future. Although forward foreign exchange contracts limit the risk of loss due to a decline in the value of the hedged currency, they also limit any potential gain that might result should the value of the currency increase. In addition, the Fund could be exposed to risks if the counterparties to the contracts are unable to meet the terms of their contracts. At June 30, 2007, there were no open forward foreign exchange contracts. FOREIGN CURRENCY TRANSLATIONS. The books and records of the Fund are maintained in U.S. dollars. Foreign currencies, investments, and other assets and liabilities are translated into U.S. dollars at the current exchange rates. Purchases and sales of investment securities, income, and expenses are translated at the exchange rate prevailing on the respective dates of such transactions. Unrealized gains and losses that result from changes in foreign exchange rates and/or changes in market prices of securities have been included in unrealized appreciation/depreciation on investments and foreign currency translations. Net realized foreign currency gains and losses resulting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions, and the 10 THE GAMCO GLOBAL GROWTH FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ difference between the amounts of interest and dividends recorded on the books of the Fund and the amounts actually received. The portion of foreign currency gains and losses related to fluctuation in exchange rates between the initial trade date and subsequent sale trade date is included in realized gain/(loss) on investments. FOREIGN SECURITIES. The Fund may directly purchase securities of foreign issuers. Investing in securities of foreign issuers involves special risks not typically associated with investing in securities of U.S. issuers. The risks include possible revaluation of currencies, the ability to repatriate funds, less complete financial information about companies, and possible future adverse political and economic developments. Moreover, securities of many foreign issuers and their markets may be less liquid and their prices more volatile than those of securities of comparable U.S. issuers. FOREIGN TAXES. The Fund may be subject to foreign taxes on income, gains on investments, or currency repatriation, a portion of which may be recoverable. The Fund will accrue such taxes and recoveries as applicable, based upon its current interpretation of tax rules and regulations that exist in the markets in which it invests. SECURITIES TRANSACTIONS AND INVESTMENT INCOME. Securities transactions are accounted for on the trade date with realized gain or loss on investments determined by using the identified cost method. Interest income (including amortization of premium and accretion of discount) is recorded on the accrual basis. Premiums and discounts on debt securities are amortized using the effective yield to maturity method. Dividend income is recorded on the ex-dividend date except for certain dividends which are recorded as soon as the Fund is informed of the dividend. DETERMINATION OF NET ASSET VALUE AND CALCULATION OF EXPENSES. Certain administrative expenses are common to, and allocated among, various affiliated funds. Such allocations are made on the basis of each Fund's average net assets or other criteria directly affecting the expenses as determined by the Adviser pursuant to procedures established by the Board. In calculating the NAV per share of each class, investment income, realized and unrealized gains and losses, redemption fees, and expenses other than class specific expenses are allocated daily to each class of shares based upon the proportion of net assets of each class at the beginning of each day. Distribution expenses are borne solely by the class incurring the expense. CUSTODIAN FEE CREDITS AND INTEREST EXPENSE. When cash balances are maintained in the custody account, the Fund receives credits which are used to offset custodian fees. The gross expenses paid under the custody arrangement are included in custodian fees in the Statement of Operations with the corresponding expense offset, if any, shown as "custodian fee credits". When cash balances are overdrawn, the Fund is charged an overdraft fee equal to 2.00% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. DISTRIBUTIONS TO SHAREHOLDERS. Distributions to shareholders are recorded on the ex-dividend date. Distributions to shareholders are based on income and capital gains as determined in accordance with federal income tax regulations, which may differ from income and capital gains as determined under U.S. generally accepted accounting principles. These differences are primarily due to differing treatments of income and gains on various investment securities and foreign currency transactions held by the Fund, timing differences, and differing characterizations of distributions made by the Fund. Distributions from net investment income include net realized gains on foreign currency transactions. These book/tax differences are either temporary or permanent in nature. To the extent these differences are permanent, adjustments are made to the appropriate capital accounts in the period when the differences arise. These reclassifications have no impact on the NAV of the Fund. 11 THE GAMCO GLOBAL GROWTH FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ The tax character of distributions paid during the fiscal year ended December 31, 2006 was $276,308 of ordinary income. At December 31, 2006, the Fund had net capital loss carryforwards for federal income tax purposes of $54,218,953, which are available to reduce future required distributions of net capital gains to shareholders. $12,969,766 is available through 2009; $39,969,419 is available through 2010; and $1,279,768 is available through 2011. PROVISION FOR INCOME TAXES. The Fund intends to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). It is the policy of the Fund to comply with the requirements of the Code applicable to regulated investment companies and to distribute substantially all of its net investment company taxable income and net capital gains. Therefore, no provision for federal income taxes is required. The following summarizes the tax cost of investments and the related unrealized appreciation/(depreciation) at June 30, 2007: GROSS GROSS UNREALIZED UNREALIZED NET UNREALIZED COST APPRECIATION DEPRECIATION APPRECIATION ---- ------------ ------------ ------------ Investments ...... $78,989,813 $26,433,657 $(1,123,784) $25,309,873 In July 2006, the FASB issued Interpretation No. 48, "Accounting for Uncertainty in Income Taxes, an Interpretation of FASB Statement No. 109" ("the Interpretation"). The Interpretation established for all entities, including pass-through entities such as the Fund, a minimum threshold for financial statement recognition of the benefit of positions taken in filing tax returns (including whether an entity is taxable in a particular jurisdiction), and required certain expanded tax disclosures. The Interpretation was implemented by the Fund on June 29, 2007 and applied to all open tax years as of the effective date. Management has evaluated the application of the Interpretation to the Fund, and the adoption of the Interpretation had no impact on the amounts reported in the financial statements. 3. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS. The Fund has entered into an investment advisory agreement (the "Advisory Agreement") with the Adviser which provides that the Fund will pay the Adviser a fee, computed daily and paid monthly, at the annual rate of 1.00% of the value of its average daily net assets. In accordance with the Advisory Agreement, the Adviser provides a continuous investment program for the Fund's portfolio, oversees the administration of all aspects of the Fund's business and affairs, and pays the compensation of all Officers and Directors of the Fund who are affiliated persons of the Adviser. If total net assets of the Corporation are in excess of $100 million, the Corporation pays each Director that is not considered to be an affiliated person an annual retainer of $3,000 plus $500 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. If total net assets of the Corporation are below $100 million, the Corporation pays each Independent Director an annual retainer of $1,500 plus $250 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. All Board committee members receive $500 per meeting attended. Directors who are directors or employees of the Adviser or an affiliated company receive no compensation or expense reimbursement from the Fund. 4. DISTRIBUTION PLAN. The Fund's Board has adopted a distribution plan (the "Plan") for each class of shares pursuant to Rule 12b-1 under the 1940 Act. Gabelli & Company, Inc. ("Gabelli & Company"), an affiliate of the Adviser, serves as distributor of the Fund. Under the Class AAA, Class A, Class B, and Class C Share Plans, payments are authorized to Gabelli & Company at annual rates of 0.25%, 0.25%, 1.00%, and 1.00%, respectively, of the average daily net assets of those classes, the annual limitations under each Plan. Such payments are accrued daily and paid monthly. 12 THE GAMCO GLOBAL GROWTH FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ 5. PORTFOLIO SECURITIES. Purchases and proceeds from the sales of securities for the six months ended June 30, 2007, other than short-term and U.S. Government Securities, aggregated $23,341,629 and $26,801,316, respectively. 6. TRANSACTIONS WITH AFFILIATES. During the six months ended June 30, 2007, the Fund paid brokerage commissions of $11,400 to Gabelli & Company. Additionally, Gabelli & Company informed the Fund that it received $2,582 from investors representing commissions (sales charges and underwriting fees) on sales and redemptions of Fund shares. The cost of calculating the Fund's NAV per share is a Fund expense pursuant to the Advisory Agreement between the Fund and the Adviser. During the six months ended June 30, 2007, the Fund paid or accrued $22,621 to the Adviser in connection with the cost of computing the Fund's NAV. 7. LINE OF CREDIT. Effective June 20, 2007, the Fund participates in an unsecured line of credit of up to $75,000,000, and may borrow up to 10% of its net assets from the custodian for temporary borrowing purposes. Prior to June 20, 2007, the line of credit was $25,000,000. Borrowings under this arrangement bear interest at 0.75% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. At June 30, 2007, there were no borrowings outstanding under the line of credit. The average daily amount of borrowings outstanding from the line of credit within the six months ended June 30, 2007, was $3,674 with a weighted average interest rate of 6.02%. The maximum amount borrowed at any time during this period was $251,000. 8. CAPITAL STOCK TRANSACTIONS. The Fund currently offers four classes of shares - - Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares. Effective February 15, 2007, Class AAA Shares are offered only to investors who were shareholders prior to that date in one or more of the registered funds distributed by Gabelli & Company. Class AAA Shares are offered to these investors only through selected broker/dealers, or the transfer agent without a sales charge. Class A Shares are subject to a maximum front-end sales charge of 5.75%. Class B Shares are subject to a contingent deferred sales charge ("CDSC") upon redemption within six years of purchase and automatically convert to Class A Shares approximately eight years after the original purchase. The applicable CDSC is equal to a declining percentage of the lesser of the NAV per share at the date of the original purchase or at the date of redemption, based on the length of time held. Class C Shares are subject to a 1.00% CDSC for one year after purchase. Class B Shares are available only through exchange of Class B Shares of other funds distributed by Gabelli & Company. The Board has approved Class I Shares which have not been offered publicly. The Fund imposes a redemption fee of 2.00% on Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares that are redeemed or exchanged on or before the seventh day after the date of a purchase. The redemption fee is deducted from the proceeds otherwise payable to the redeeming shareholders and is retained by the Fund. The redemption fees retained by the Fund during the six months ended June 30, 2007 and the fiscal year ended December 31, 2006 amounted to $26 and $148, respectively. The redemption fee does not apply to redemptions of shares where (i) the shares were purchased through automatic reinvestment of dividends or other distributions, (ii) the redemption was initiated by the Fund, (iii) the shares were purchased through programs that collect the redemption fee at the program level and remit them to the Fund, or (iv) the shares were purchased through programs that the Adviser determines to have appropriate anti-short-term trading policies in place or as to which the Adviser has received assurances that look-through redemption fee procedures or effective anti-short-term trading policies and procedures are in place. 13 THE GAMCO GLOBAL GROWTH FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ Transactions in shares of capital stock were as follows: SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 -------------------------- ----------------------------- SHARES AMOUNT SHARES AMOUNT -------- ----------- ---------- ------------ CLASS AAA CLASS AAA -------------------------- ----------------------------- Shares sold .......................................... 58,048 $ 1,379,905 263,640 $ 5,632,563 Shares issued upon reinvestment of distributions ..... -- -- 11,428 262,618 Shares redeemed ...................................... (406,396) (9,640,959) (1,183,208) (25,403,007) -------- ----------- ---------- ------------ Net decrease ....................................... (348,348) $(8,261,054) (908,140) $(19,507,826) ======== =========== ========== ============ CLASS A CLASS A -------------------------- ----------------------------- Shares sold .......................................... 22,591 $ 552,048 8,807 $ 187,766 Shares issued upon reinvestment of distributions ..... -- -- 126 2,895 Shares redeemed ...................................... (8,820) (208,785) (8,777) (193,466) -------- ----------- ---------- ------------ Net increase (decrease) ............................ 13,771 $ 343,263 156 $ (2,805) ======== =========== ========== ============ CLASS B CLASS B -------------------------- ----------------------------- Shares sold .......................................... 646 $ 14,664 -- $ -- Shares redeemed ...................................... (366) (8,010) (2) (60) -------- ----------- ---------- ------------ Net increase (decrease) ............................ 280 $ 6,654 (2) $ (60) ======== =========== ========== ============ CLASS C CLASS C -------------------------- ----------------------------- Shares sold .......................................... 968 $ 21,973 9,832 $ 202,102 Shares redeemed ...................................... (3,107) (72,684) (9,339) (187,197) -------- ----------- ---------- ------------ Net increase (decrease) ............................ (2,139) $ (50,711) 493 $ 14,905 ======== =========== ========== ============ 9. INDEMNIFICATIONS. The Fund enters into contracts that contain a variety of indemnifications. The Fund's maximum exposure under these arrangements is unknown. However, the Fund has not had prior claims or losses pursuant to these contracts and expects the risk of loss to be remote. 10. OTHER MATTERS. The Adviser and/or affiliates received subpoenas from the Attorney General of the State of New York and the SEC requesting information on mutual fund share trading practices involving certain funds managed by the Adviser. GAMCO Investors, Inc. ("GAMCO"), the Adviser's parent company, responded to these requests for documents and testimony. In June 2006, GAMCO began discussions with the SEC regarding a possible resolution of their inquiry. In February 2007, the Adviser made an offer of settlement to the staff of the SEC for communication to the Commission for its consideration to resolve this matter. This offer of settlement is subject to agreement regarding the specific language of the SEC's administrative order and other settlement documents. On a separate matter, in September 2005, the Adviser was informed by the staff of the SEC that the staff may recommend to the Commission that an administrative remedy and a monetary penalty be sought from the Adviser in connection with the actions of two of seven closed-end funds managed by the Adviser relating to Section 19(a) and Rule 19a-1 of the 1940 Act. These provisions require registered investment companies to provide written statements to shareholders when a dividend is made from a source other than net investment income. While the two closed-end funds sent annual statements and provided other materials containing this information, the funds did not send written statements to shareholders with each distribution in 2002 and 2003. The Adviser believes that all of the funds are now in compliance. The Adviser believes that these matters would have no effect on the Fund or any material adverse effect on the Adviser or its ability to manage the Fund. 14 THE GAMCO GLOBAL GROWTH FUND FINANCIAL HIGHLIGHTS ================================================================================ Selected data for a share of capital stock outstanding throughout each period: INCOME FROM INVESTMENT OPERATIONS DISTRIBUTIONS -------------------------------------- --------------------------- Net Net Asset Net Realized and Total Period Value, Investment Unrealized from Net Ended Beginning Income Gain (Loss) on Investment Investment Total December 31, of Period (Loss)(a) Investments Operations Income Distributions - ------------ --------- ---------- ------------- ---------- ---------- ------------- CLASS AAA 2007(c) $22.93 $ 0.03 $ 2.21 $ 2.24 -- -- 2006 20.43 0.06 2.50 2.56 $(0.06) $(0.06) 2005 17.98 0.02 2.45 2.47 (0.02) (0.02) 2004 16.43 (0.05) 1.60 1.55 -- -- 2003 11.62 (0.06) 4.86 4.80 -- -- 2002 15.45 (0.08) (3.75) (3.83) -- -- CLASS A 2007(c) $22.93 $ 0.04 $ 2.20 $ 2.24 -- -- 2006 20.43 0.06 2.50 2.56 $(0.06) $(0.06) 2005 18.01 0.01 2.45 2.46 (0.04) (0.04) 2004 16.45 (0.05) 1.61 1.56 -- -- 2003 11.63 (0.06) 4.87 4.81 -- -- 2002 15.47 (0.08) (3.76) (3.84) -- -- CLASS B 2007(c) $21.94 $(0.05) $ 2.11 $ 2.06 -- -- 2006 19.65 (0.10) 2.39 2.29 -- -- 2005 17.41 (0.12) 2.36 2.24 -- -- 2004 16.02 (0.17) 1.56 1.39 -- -- 2003 11.42 (0.16) 4.75 4.59 -- -- 2002 15.30 (0.17) (3.71) (3.88) -- -- CLASS C 2007(c) $21.87 $(0.05) $ 2.06 $ 2.01 -- -- 2006 19.58 (0.09) 2.38 2.29 -- -- 2005 17.35 (0.16) 2.39 2.23 -- -- 2004 15.97 (0.19) 1.57 1.38 -- -- 2003 11.38 (0.16) 4.74 4.58 -- -- 2002 15.26 (0.17) (3.71) (3.88) -- -- RATIOS TO AVERAGE NET ASSETS/SUPPLEMENTAL DATA ------------------------------------------------- Net Asset Net Assets Net Period Value, End of Investment Portfolio Ended Redemption End of Total Period Income Operating Turnover December 31, Fees(a) Period Return+ (in 000's) (Loss) Expenses (b) Rate - ------------ ---------- -------- ------- ---------- --------- ------------ -------- CLASS AAA 2007(c) $0.00(d) $25.17 9.8% $101,958 0.28%(e) 1.76%(e) 23% 2006 0.00(d) 22.93 12.5 100,883 0.26 1.78 46 2005 0.00(d) 20.43 13.7 108,433 0.11 1.79(f) 33 2004 0.00(d) 17.98 9.4 114,011 (0.30) 1.82 100 2003 0.01 16.43 41.4 132,886 (0.45) 1.71 63 2002 -- 11.62 (24.8) 105,034 (0.58) 1.75 82 CLASS A 2007(c) $0.00(d) $25.17 9.8% $ 1,767 0.30%(e) 1.76%(e) 23% 2006 0.00(d) 22.93 12.5 1,294 0.28 1.78 46 2005 0.00(d) 20.43 13.7 1,150 0.03 1.79(f) 33 2004 0.00(d) 18.01 9.5 493 (0.29) 1.82 100 2003 0.01 16.45 41.4 426 (0.45) 1.71 63 2002 -- 11.63 (24.8) 176 (0.58) 1.75 82 CLASS B 2007(c) $0.00(d) $24.00 9.4% $ 253 (0.45)%(e) 2.51%(e) 23% 2006 0.00(d) 21.94 11.7 225 (0.49) 2.53 46 2005 0.00(d) 19.65 12.9 202 (0.67) 2.54(f) 33 2004 0.00(d) 17.41 8.7 183 (1.05) 2.57 100 2003 0.01 16.02 40.3 211 (1.20) 2.46 63 2002 -- 11.42 (25.4) 86 (1.33) 2.50 82 CLASS C 2007(c) $0.00(d) $23.88 9.4% $ 249 (0.44)%(e) 2.50%(e) 23% 2006 0.00(d) 21.87 11.7 275 (0.42) 2.53 46 2005 0.00(d) 19.58 12.9 236 (0.90) 2.52(f) 33 2004 0.00(d) 17.35 8.6 52 (1.17) 2.57 100 2003 0.01 15.97 40.3 207 (1.20) 2.46 63 2002 -- 11.38 (25.4) 101 (1.33) 2.50 82 - ------------ + Total return represents aggregate total return of a hypothetical $1,000 investment at the beginning of the period and sold at the end of the period including reinvestment of distributions and does not reflect applicable sales charges. Total return for a period of less than one year is not annualized. (a) Per share amounts have been calculated using the average shares outstanding method. (b) The Fund incurred interest expense during the years ended December 31, 2004 and 2002. If interest expense had not been incurred, the ratios of operating expenses to average net assets would have been 1.81% and 1.70%, (Class AAA), 1.81% and 1.70%, (Class A), 2.56% and 2.45%, (Class B), and 2.56% and 2.45%, (Class C), respectively. (c) For the period ended June 30, 2007, unaudited. (d) Amount represents less than $0.005 per share. (e) Annualized. (f) The ratios do not include a reduction of expenses for custodian fee credits on cash balances maintained with the custodian. Including such custodian fee credits, the expense ratios for the year ended December 31, 2005 would have been 1.79%, 1.79%, 2.53%, and 2.52% for Class AAA, Class A, Class B, and Class C, respectively. See accompanying notes to financial statements. 15 GAMCO Global Series Funds, Inc. THE GAMCO GLOBAL GROWTH FUND One Corporate Center Rye, New York 10580-1422 800-GABELLI 800-422-3554 FAX: 914-921-5118 WEBSITE: WWW.GABELLI.COM E-MAIL: INFO@GABELLI.COM Net Asset Value per share available daily by calling 800-GABELLI after 6:00 P.M. BOARD OF DIRECTORS Mario J. Gabelli, CFA John D. Gabelli CHAIRMAN AND CHIEF SENIOR VICE PRESIDENT EXECUTIVE OFFICER GABELLI & COMPANY, INC. GAMCO INVESTORS, INC. E. Val Cerutti Werner J. Roeder, MD CHIEF EXECUTIVE OFFICER MEDICAL DIRECTOR CERUTTI CONSULTANTS, INC. LAWRENCE HOSPITAL Anthony J. Colavita Anthonie C. van Ekris ATTORNEY-AT-LAW CHAIRMAN ANTHONY J. COLAVITA, P.C. BALMAC INTERNATIONAL, INC. Arthur V. Ferrara Salvatore J. Zizza FORMER CHAIRMAN AND CHAIRMAN CHIEF EXECUTIVE OFFICER ZIZZA & CO., LTD. GUARDIAN LIFE INSURANCE COMPANY OF AMERICA OFFICERS Bruce N. Alpert James E. McKee PRESIDENT SECRETARY Agnes Mullady Peter D. Goldstein TREASURER CHIEF COMPLIANCE OFFICER DISTRIBUTOR Gabelli & Company, Inc. CUSTODIAN, TRANSFER AGENT, AND DIVIDEND AGENT State Street Bank and Trust Company LEGAL COUNSEL Skadden, Arps, Slate, Meagher & Flom LLP - -------------------------------------------------------------------------------- This report is submitted for the general information of the shareholders of The GAMCO Global Growth Fund. It is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. - -------------------------------------------------------------------------------- GAB442Q207SR GAMCO THE GAMCO GLOBAL GROWTH FUND SEMI-ANNUAL REPORT JUNE 30, 2007 THE GAMCO GLOBAL OPPORTUNITY FUND SEMI-ANNUAL REPORT JUNE 30, 2007 TO OUR SHAREHOLDERS, During the second quarter of 2007, The GAMCO Global Opportunity Fund (the "Fund") advanced 6.5% while the Morgan Stanley Capital International All Country ("MSCI AC") World Free Index and the Lipper Global Multi-Cap Growth Fund Average were up 7.4% and 8.0%, respectively. For the six month period ended June 30, 2007, the Fund gained 11.0% versus returns of 10.2% and 11.3% for the MSCI AC World Free Index and the Lipper Global Multi-Cap Growth Fund Average, respectively. COMPARATIVE RESULTS - --------------------------------------------------------------------------------------------------------------------- AVERAGE ANNUAL RETURNS THROUGH JUNE 30, 2007 (A) ------------------------------------------------ Since Year to Inception Quarter Date 1 Year 3 Year 5 Year (5/11/98) - ---------------------------------------------------------------------------------------------------------------------- GAMCO GLOBAL OPPORTUNITY FUND CLASS AAA ............. 6.47% 11.03% 19.09% 18.82% 16.33% 10.37% MSCI AC World Free Index ............................ 7.42 10.19 25.83 18.57 15.44 6.84 Lipper Global Multi-Cap Growth Fund Average ......... 7.97 11.31 25.93 18.28 13.91 7.02 Class A ............................................. 6.44 11.01 18.98 18.83 16.36 10.37 0.32(b) 4.62(b) 12.14(b) 16.50(b) 14.99(b) 9.66(b) Class B ............................................. 6.22 10.56 18.07 17.91 15.48 9.78 1.22(c) 5.56(c) 13.07(c) 17.18(c) 15.25(c) 9.78 Class C ............................................. 6.25 10.57 18.12 18.18 16.10 10.28 5.25(d) 9.57(d) 17.12(d) 18.18 16.10 10.28 THE CURRENT EXPENSE RATIO FOR CLASS AAA, A, B, AND C SHARES IS 1.95%, 1.95%, 2.70%, AND 2.70%, RESPECTIVELY. CLASS AAA SHARES DO NOT HAVE A SALES CHARGE. THE MAXIMUM SALES CHARGE FOR CLASS A, B, AND C SHARES IS 5.75%, 5.00%, AND 1.00%, RESPECTIVELY. (a) RETURNS REPRESENT PAST PERFORMANCE AND DO NOT GUARANTEE FUTURE RESULTS. TOTAL RETURNS AND AVERAGE ANNUAL RETURNS REFLECT CHANGES IN SHARE PRICE AND REINVESTMENT OF DISTRIBUTIONS AND ARE NET OF EXPENSES. INVESTMENT RETURNS AND THE PRINCIPAL VALUE OF AN INVESTMENT WILL FLUCTUATE. WHEN SHARES ARE REDEEMED, THEY MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PERFORMANCE RETURNS FOR PERIODS LESS THAN ONE YEAR ARE NOT ANNUALIZED. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE DATA PRESENTED. VISIT WWW.GABELLI.COM FOR PERFORMANCE INFORMATION AS OF THE MOST RECENT MONTH END. INVESTORS SHOULD CAREFULLY CONSIDER THE INVESTMENT OBJECTIVES, RISKS, CHARGES, AND EXPENSES OF THE FUND BEFORE INVESTING. THE PROSPECTUS CONTAINS MORE INFORMATION ABOUT THIS AND OTHER MATTERS AND SHOULD BE READ CAREFULLY BEFORE INVESTING. INVESTING IN FOREIGN SECURITIES INVOLVES RISKS NOT ORDINARILY ASSOCIATED WITH INVESTMENTS IN DOMESTIC ISSUES, INCLUDING CURRENCY FLUCTUATION, ECONOMIC, AND POLITICAL RISKS. THE CLASS AAA SHARES' NET ASSET VALUES ("NAV'S") PER SHARE ARE USED TO CALCULATE PERFORMANCE FOR THE PERIODS PRIOR TO THE ISSUANCE OF CLASS A SHARES, CLASS B SHARES, AND CLASS C SHARES ON MARCH 12, 2000, AUGUST 16, 2000, AND NOVEMBER 23, 2001, RESPECTIVELY. THE ACTUAL PERFORMANCE FOR THE CLASS B SHARES AND CLASS C SHARES WOULD HAVE BEEN LOWER FOR THE PERIODS STARTING PRIOR TO AUGUST 16, 2000 AND NOVEMBER 23, 2001, RESPECTIVELY, DUE TO THE ADDITIONAL EXPENSES ASSOCIATED WITH THESE CLASSES OF SHARES. RETURNS WOULD HAVE BEEN LOWER HAD THE ADVISER NOT REIMBURSED CERTAIN EXPENSES OF THE FUND. THE MSCI AC WORLD FREE INDEX IS AN UNMANAGED INDICATOR OF STOCK MARKET PERFORMANCE, WHILE THE LIPPER AVERAGE REFLECTS THE AVERAGE PERFORMANCE OF MUTUAL FUNDS CLASSIFIED IN THIS PARTICULAR CATEGORY. DIVIDENDS ARE CONSIDERED REINVESTED. YOU CANNOT INVEST DIRECTLY IN AN INDEX. (b) INCLUDES THE EFFECT OF THE MAXIMUM 5.75% SALES CHARGE AT THE BEGINNING OF THE PERIOD. (c) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS B SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, ONE YEAR, THREE YEAR, AND FIVE YEAR PERIODS OF 5%, 5%, 5%, 3%, AND 2%, RESPECTIVELY, OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. CLASS B SHARES ARE NOT AVAILABLE FOR NEW PURCHASES. (d) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS C SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, AND ONE YEAR PERIODS OF 1% OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- We have separated the portfolio managers' commentary from the financial statements and investment portfolio due to corporate governance regulations stipulated by the Sarbanes-Oxley Act of 2002. We have done this to ensure that the content of the portfolio managers' commentary is unrestricted. The financial statements and investment portfolio are mailed separately from the commentary. Both the commentary and the financial statements, including the portfolio of investments, will be available on our website at www.gabelli.com/funds. - -------------------------------------------------------------------------------- THE GAMCO GLOBAL OPPORTUNITY FUND DISCLOSURE OF FUND EXPENSES (UNAUDITED) For the Six Month Period from January 1, 2007 through June 30, 2007 EXPENSE TABLE ================================================================================ We believe it is important for you to understand the impact of fees and expenses regarding your investment. All mutual funds have operating expenses. As a shareholder of a fund, you incur ongoing costs, which include costs for portfolio management, administrative services, and shareholder reports (like this one), among others. Operating expenses, which are deducted from a fund's gross income, directly reduce the investment return of a fund. When a fund's expenses are expressed as a percentage of its average net assets, this figure is known as the expense ratio. The following examples are intended to help you understand the ongoing costs (in dollars) of investing in your Fund and to compare these costs with those of other mutual funds. The examples are based on an investment of $1,000 made at the beginning of the period shown and held for the entire period. The Expense Table below illustrates your Fund's costs in two ways: ACTUAL FUND RETURN: This section provides information about actual account values and actual expenses. You may use this section to help you to estimate the actual expenses that you paid over the period after any fee waivers and expense reimbursements. The "Ending Account Value" shown is derived from the Fund's ACTUAL return during the past six months, and the "Expenses Paid During Period" shows the dollar amount that would have been paid by an investor who started with $1,000 in the Fund. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. To do so, simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number given for your Fund under the heading "Expenses Paid During Period" to estimate the expenses you paid during this period. HYPOTHETICAL 5% RETURN: This section provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio. It assumes a hypothetical annualized return of 5% before expenses during the period shown. In this case - because the hypothetical return used is NOT the Fund's actual return - the results do not apply to your investment and you cannot use the hypothetical account value and expense to estimate the actual ending account balance or expenses you paid for the period. This example is useful in making comparisons of the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in shareholder reports of other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs such as sales charges (loads), redemption fees, or exchange fees, if any, which are described in the Prospectus. If these costs were applied to your account, your costs would be higher. Therefore, the 5% hypothetical return is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. Beginning Ending Annualized Expenses Account Value Account Value Expense Paid During 01/01/07 06/30/07 Ratio Period* - -------------------------------------------------------------------------------- THE GAMCO GLOBAL OPPORTUNITY FUND - -------------------------------------------------------------------------------- ACTUAL FUND RETURN Class AAA $1,000.00 $1,110.30 2.03% $10.68 Class A $1,000.00 $1,110.10 2.03% $10.68 Class B $1,000.00 $1,105.60 2.78% $14.59 Class C $1,000.00 $1,105.70 2.78% $14.59 HYPOTHETICAL 5% RETURN Class AAA $1,000.00 $1,014.81 2.03% $10.20 Class A $1,000.00 $1,014.81 2.03% $10.20 Class B $1,000.00 $1,011.07 2.78% $13.94 Class C $1,000.00 $1,011.07 2.78% $13.94 * Expenses are equal to the Fund's annualized expense ratio for the last six months multiplied by the average account value over the period, multiplied by the number of days in the most recent fiscal half-year, then divided by 365. 2 SUMMARY OF PORTFOLIO HOLDINGS (UNAUDITED) The following table presents portfolio holdings as a percent of total net assets as of June 30, 2007: THE GAMCO GLOBAL OPPORTUNITY FUND Energy and Utilities .......................... 13.2% Consumer Products ............................. 12.1% Health Care ................................... 11.5% Financial Services ............................ 10.6% Metals and Mining ............................. 9.3% Food and Beverage ............................. 7.2% Computer Software and Services ................ 4.7% Diversified Industrial ........................ 3.6% Aerospace ..................................... 3.3% Telecommunications ............................ 3.3% Aviation: Parts and Services .................. 3.2% Machinery ..................................... 3.2% Building and Construction ..................... 3.1% Hotels and Gaming ............................. 2.3% Broadcasting .................................. 1.9% Entertainment ................................. 1.8% Wireless Communications ....................... 1.7% Cable and Satellite ........................... 1.0% Electronics ................................... 0.9% Publishing .................................... 0.8% U.S. Treasury Bills ........................... 0.8% Retail ........................................ 0.7% Other Assets and Liabilities (Net) ............ (0.2)% ------- 100.0% ====== THE FUND FILES A COMPLETE SCHEDULE OF PORTFOLIO HOLDINGS WITH THE SECURITIES AND EXCHANGE COMMISSION (THE "SEC") FOR THE FIRST AND THIRD QUARTERS OF EACH FISCAL YEAR ON FORM N-Q, THE LAST OF WHICH WAS FILED FOR THE QUARTER ENDED MARCH 31, 2007. SHAREHOLDERS MAY OBTAIN THIS INFORMATION AT WWW.GABELLI.COM OR BY CALLING THE FUND AT 800-GABELLI (800-422-3554). THE FUND'S FORM N-Q IS AVAILABLE ON THE SEC'S WEBSITE AT WWW.SEC.GOV AND MAY ALSO BE REVIEWED AND COPIED AT THE SEC'S PUBLIC REFERENCE ROOM IN WASHINGTON, DC. INFORMATION ON THE OPERATION OF THE PUBLIC REFERENCE ROOM MAY BE OBTAINED BY CALLING 1-800-SEC-0330. PROXY VOTING The Fund files Form N-PX with its complete proxy voting record for the 12 months ended June 30th, no later than August 31st of each year. A description of the Fund's proxy voting policies, procedures, and how the Fund voted proxies relating to portfolio securities is available without charge, upon request, by (i) calling 800-GABELLI (800-422-3554); (ii) writing to The Gabelli Funds at One Corporate Center, Rye, NY 10580-1422; or (iii) visiting the SEC's website at www.sec.gov. 3 THE GAMCO GLOBAL OPPORTUNITY FUND SCHEDULE OF INVESTMENTS -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS -- 99.4% AEROSPACE -- 3.3% 3,000 L-3 Communications Holdings Inc. .................. $ 127,720 $ 292,170 5,500 Lockheed Martin Corp. ............ 135,166 517,715 ------------ ------------ 262,886 809,885 ------------ ------------ AVIATION: PARTS AND SERVICES -- 3.2% 6,400 Precision Castparts Corp. ........ 94,880 776,704 ------------ ------------ BROADCASTING -- 1.9% 20,000 Mediaset SpA ..................... 195,380 206,598 4,000 Modern Times Group MTG AB, Cl. B ...................... 140,956 257,809 ------------ ------------ 336,336 464,407 ------------ ------------ BUILDING AND CONSTRUCTION -- 3.1% 4,125 CRH plc, Dublin .................. 47,794 203,854 11,000 CRH plc, London .................. 139,783 541,596 ------------ ------------ 187,577 745,450 ------------ ------------ CABLE AND SATELLITE -- 1.0% 7,000 Cablevision Systems Corp., Cl. A+ ........................ 67,535 253,330 ------------ ------------ COMPUTER SOFTWARE AND SERVICES -- 4.7% 5,000 eBay Inc.+ ....................... 175,275 160,900 700 Google Inc., Cl. A+ .............. 220,948 366,366 11,500 Microsoft Corp. .................. 301,125 338,905 5,000 Square Enix Co. Ltd. ............. 121,465 126,288 5,000 Yahoo! Inc.+ ..................... 169,373 135,650 ------------ ------------ 988,186 1,128,109 ------------ ------------ CONSUMER PRODUCTS -- 12.1% 5,000 Altadis SA ....................... 153,235 330,447 10,000 Assa Abloy AB, Cl. B ............. 189,995 220,051 4,000 Christian Dior SA ................ 227,736 517,629 11,000 Compagnie Financiere Richemont SA, Cl. A ............ 231,884 657,484 8,500 Escada AG+ ....................... 207,340 372,766 4,000 Fortune Brands Inc. .............. 328,419 329,480 4,000 Procter & Gamble Co. ............. 221,128 244,760 5,000 UST Inc. ......................... 244,216 268,550 ------------ ------------ 1,803,953 2,941,167 ------------ ------------ DIVERSIFIED INDUSTRIAL -- 3.6% 6,000 Bouygues SA ...................... 216,198 502,712 9,500 General Electric Co. ............. 320,183 363,660 ------------ ------------ 536,381 866,372 ------------ ------------ ELECTRONICS -- 0.9% 1,000 Fanuc Ltd. ....................... 101,607 103,213 500 Keyence Corp. .................... 112,873 109,231 ------------ ------------ 214,480 212,444 ------------ ------------ MARKET SHARES COST VALUE ------ ---- ------- ENERGY AND UTILITIES -- 13.2% 7,000 Connecticut Water Service Inc. ................... $ 158,291 $ 170,590 6,600 Imperial Oil Ltd. ................ 222,619 307,246 30,000 Kanto Natural Gas Development Co. Ltd. ........... 153,608 204,486 9,000 Mueller Water Products Inc., Cl. B .......................... 137,238 135,000 3,500 Petroleo Brasileiro SA, ADR ...... 105,807 424,445 10,000 Saipem SpA ....................... 210,831 341,204 7,200 Schlumberger Ltd. ................ 238,374 611,568 3,000 Suncor Energy Inc. ............... 101,766 269,760 35,000 Tokai Carbon Co. Ltd. ............ 152,714 327,470 4,000 Transocean Inc.+ ................. 164,064 423,920 ------------ ------------ 1,645,312 3,215,689 ------------ ------------ ENTERTAINMENT -- 1.8% 20,000 Publishing and Broadcasting Ltd. .............. 98,225 331,434 5,000 Time Warner Inc. ................. 85,437 105,200 ------------ ------------ 183,662 436,634 ------------ ------------ FINANCIAL SERVICES -- 10.6% 4,500 American Express Co. ............. 260,351 275,310 15,000 Bank of Ireland .................. 92,773 302,203 25,000 Capitalia SpA .................... 262,025 247,998 9,750 Julius Baer Holding Ltd. AG ...... 347,201 697,610 1,600 Legg Mason Inc. .................. 141,880 157,408 1,500 Partners Group ................... 212,041 201,272 20,000 The Shizuoka Bank Ltd. ........... 203,072 202,934 8,000 UBS AG ........................... 336,926 480,080 ------------ ------------ 1,856,269 2,564,815 ------------ ------------ FOOD AND BEVERAGE -- 7.2% 19,000 Cadbury Schweppes plc ............ 187,570 257,876 6,000 Cermaq ASA ....................... 93,252 104,161 5,000 General Mills Inc. ............... 248,004 292,100 5,000 Heineken Holding NV .............. 233,716 258,537 175,000 Marine Harvest+ .................. 195,506 188,965 5,000 PepsiCo Inc. ..................... 261,500 324,250 1,500 Pernod-Ricard SA ................. 301,572 331,181 ------------ ------------ 1,521,120 1,757,070 ------------ ------------ HEALTH CARE -- 11.5% 6,000 Cochlear Ltd. .................... 246,988 309,810 4,208 GlaxoSmithKline plc .............. 126,084 109,618 6,000 Novartis AG ...................... 232,122 336,844 3,500 Roche Holding AG ................. 305,337 620,153 5,000 St. Jude Medical Inc.+ ........... 192,663 207,450 1,200 Straumann Holding AG ............. 254,333 336,402 2,500 Synthes Inc. ..................... 255,485 300,655 See accompanying notes to financial statements. 4 THE GAMCO GLOBAL OPPORTUNITY FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS (CONTINUED) HEALTH CARE (CONTINUED) 4,200 Takeda Pharmaceutical Co. Ltd. ....................... $ 263,783 $ 271,326 3,000 William Demant Holding A/S+ ........................... 141,483 297,126 ------------ ------------ 2,018,278 2,789,384 ------------ ------------ HOTELS AND GAMING -- 2.3% 8,392 InterContinental Hotels Group plc ...................... 207,348 208,463 15,000 Ladbrokes plc .................... 121,994 129,680 100,000 Mandarin Oriental International Ltd. ............. 221,081 223,000 ------------ ------------ 550,423 561,143 ------------ ------------ MACHINERY -- 3.2% 3,000 Bobst Group AG ................... 196,729 188,392 4,500 CNH Global NV .................... 129,912 229,905 4,000 Outotec Oyj ...................... 213,475 219,540 1,000 SMC Corp. ........................ 124,201 132,925 ------------ ------------ 664,317 770,762 ------------ ------------ METALS AND MINING -- 9.3% 17,726 Andsberg Ltd.+ (a) ............... 8,277 15,754 73,630 Antofagasta plc .................. 88,100 902,408 43,000 Gold Fields Ltd., ADR ............ 186,535 675,100 10,000 Harmony Gold Mining Co. Ltd.+ ...................... 56,555 142,086 24,000 Harmony Gold Mining Co. Ltd., ADR+ .................... 130,306 342,480 3,500 Peabody Energy Corp. ............. 179,978 169,330 ------------ ------------ 649,751 2,247,158 ------------ ------------ PUBLISHING -- 0.8% 40,000 Independent News & Media plc ...................... 98,736 202,749 ------------ ------------ RETAIL -- 0.7% 6,300 Seven & I Holdings Co. Ltd. ...... 218,236 180,088 ------------ ------------ TELECOMMUNICATIONS -- 3.3% 3,000 Alltel Corp. ..................... 128,045 202,650 15,675 Sprint Nextel Corp. .............. 255,701 324,629 2,300 Telephone & Data Systems Inc. ........................... 45,066 143,911 2,300 Telephone & Data Systems Inc., Special .................. 41,599 132,365 ------------ ------------ 470,411 803,555 ------------ ------------ WIRELESS COMMUNICATIONS -- 1.7% 4,500 United States Cellular Corp.+ .... 254,809 407,700 ------------ ------------ TOTAL COMMON STOCKS .............. 14,623,538 24,134,615 ------------ ------------ PRINCIPAL MARKET AMOUNT COST VALUE -------- ---- ------- CORPORATE BONDS -- 0.0% TELECOMMUNICATIONS -- 0.0% $200,000 Williams Communications Group Inc., Escrow, 10.875%, 10/01/09+ (a)(b) ...... $ 0 $ 0 ------------ ------------ U.S. GOVERNMENT OBLIGATIONS -- 0.8% 199,000 U.S. Treasury Bill, 4.886%++, 08/16/07 ............. 197,817 197,817 ------------ ------------ TOTAL INVESTMENTS -- 100.2% .......... $ 14,821,355 24,332,432 ============ OTHER ASSETS AND LIABILITIES (NET) -- (0.2)% ..... (51,026) ------------ NET ASSETS -- 100.0% ............................. $ 24,281,406 ============ - ---------------- (a) Security fair valued under procedures established by the Board of Directors. The procedures may include reviewing available financial information about the company and reviewing valuation of comparable securities and other factors on a regular basis. At June 30, 2007, the market value of fair valued securities amounted to $15,754 or 0.06% of total net assets. (b) Security is in default. + Non-income producing security. ++ Represents annualized yield at date of purchase. ADR American Depository Receipt % OF MARKET MARKET GEOGRAPHIC DIVERSIFICATION VALUE VALUE - -------------------------- -------- ------- Europe ................................ 44.4% $10,789,163 North America ......................... 34.5 8,401,466 Latin America ......................... 6.9 1,682,933 Japan ................................. 6.8 1,657,960 South Africa .......................... 4.8 1,159,666 Asia/Pacific .......................... 2.6 641,244 ------ ----------- 100.0% $24,332,432 ====== =========== See accompanying notes to financial statements. 5 THE GAMCO GLOBAL OPPORTUNITY FUND STATEMENT OF ASSETS AND LIABILITIES JUNE 30, 2007 (UNAUDITED) ================================================================================ ASSETS: Investments, at value (cost $14,821,355) ...... $ 24,332,432 Foreign currency, at value (cost $31,823) ..... 32,109 Dividends receivable .......................... 31,613 Receivable for Fund shares sold ............... 5,867 Prepaid expense ............................... 1,067 ------------ TOTAL ASSETS .................................. 24,403,088 ------------ LIABILITIES: Payable to custodian .......................... 46,511 Payable for Fund shares redeemed .............. 2,020 Payable for investment advisory fees .......... 22,678 Payable for distribution fees ................. 5,181 Payable for legal and audit fees .............. 20,303 Payable for shareholder communications expenses ..................... 12,785 Payable for shareholder services fees ......... 6,302 Payable for Directors' fees ................... 17 Other accrued expenses ........................ 5,885 ------------ TOTAL LIABILITIES ............................. 121,682 ------------ NET ASSETS applicable to 1,200,511 shares outstanding .......................... $ 24,281,406 ============ NET ASSETS CONSIST OF: Paid-in capital, each class at $0.001 par value $ 19,444,542 Accumulated distributions in excess of net investment income ....................... (27,359) Accumulated net realized loss on investments and foreign currency transactions ........... (4,647,542) Net unrealized appreciation on investments .... 9,511,077 Net unrealized appreciation on foreign currency translations ....................... 688 ------------ NET ASSETS .................................... $ 24,281,406 ============ SHARES OF CAPITAL STOCK: CLASS AAA: Net Asset Value, offering and redemption price per share ($24,087,622 / 1,190,897 shares outstanding; 75,000,000 shares authorized) .. $20.23 ====== CLASS A: Net Asset Value and redemption price per share ($183,240 / 9,083 shares outstanding; 50,000,000 shares authorized) ............... $20.17 ====== Maximum offering price per share (NAV / 0.9425, based on maximum sales charge of 5.75% of the offering price) ......................... $21.40 ====== CLASS B: Net Asset Value and offering price per share ($6,030 / 309.7 shares outstanding; 25,000,000 shares authorized) ............... $19.47(a) ====== CLASS C: Net Asset Value and offering price per share ($4,514 / 221.3 shares outstanding; 25,000,000 shares authorized) ............... $20.40(a) ====== - --------------- (a) Redemption price varies based on the length of time held. STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED JUNE 30, 2007 (UNAUDITED) ================================================================================ INVESTMENT INCOME: Dividends (net of foreign taxes of $12,727) ... $ 263,750 Interest ...................................... 9,257 ----------- TOTAL INVESTMENT INCOME ....................... 273,007 ----------- EXPENSES: Investment advisory fees ...................... 115,946 Distribution fees - Class AAA ................. 28,703 Distribution fees - Class A ................... 260 Distribution fees - Class B ................... 73 Distribution fees - Class C ................... 21 Shareholder communications expenses ........... 15,233 Legal and audit fees .......................... 14,472 Registration expenses ......................... 14,202 Shareholder services fees ..................... 11,177 Custodian fees ................................ 8,209 Recovery of reimbursed expenses (see Note 3) .. 5,638 Interest expense .............................. 3,143 Directors' fees ............................... 1,278 Miscellaneous expenses ........................ 16,751 ----------- TOTAL EXPENSES ................................ 235,106 ----------- NET INVESTMENT INCOME ......................... 37,901 ----------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY: Net realized gain on investments .............. 1,354,728 Net realized loss on foreign currency transactions ....................... (799) ----------- Net realized gain on investments and foreign currency transactions ............... 1,353,929 ----------- Net change in unrealized appreciation/ depreciation on investments ................. 959,697 Net change in unrealized appreciation/ depreciation on foreign currency translations 64 ----------- Net change in unrealized appreciation/ depreciation on investments and foreign currency translations ............... 959,761 ----------- NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY ......... 2,313,690 ----------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ............................. $ 2,351,591 =========== See accompanying notes to financial statements. 6 THE GAMCO GLOBAL OPPORTUNITY FUND STATEMENT OF CHANGES IN NET ASSETS ================================================================================ SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 ------------ ----------------- OPERATIONS: Net investment income (loss) ........................................ $ 37,901 $ (101,772) Net realized gain on investments and foreign currency transactions .. 1,353,929 1,180,871 Net change in unrealized appreciation/depreciation on investments and foreign currency translations ..................................... 959,761 1,986,484 ------------ ------------ NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ................ 2,351,591 3,065,583 ------------ ------------ DISTRIBUTIONS TO SHAREHOLDERS: Net investment income Class AAA ......................................................... -- (3,855) Class A ........................................................... -- (124) ------------ ------------ TOTAL DISTRIBUTIONS TO SHAREHOLDERS ................................. -- (3,979) ------------ ------------ CAPITAL SHARE TRANSACTIONS: Class AAA ......................................................... (1,666,365) (1,022,036) Class A ........................................................... (58,873) (57,936) Class B ........................................................... (20,354) (27,495) ------------ ------------ NET DECREASE IN NET ASSETS FROM CAPITAL SHARE TRANSACTIONS .......... (1,745,592) (1,107,467) ------------ ------------ REDEMPTION FEES ..................................................... 11 499 ------------ ------------ NET INCREASE IN NET ASSETS .......................................... 606,010 1,954,636 NET ASSETS: Beginning of period ................................................. 23,675,396 21,720,760 ------------ ------------ End of period (including undistributed net investment income of $0 and $0, respectively) .......................................... $ 24,281,406 $ 23,675,396 ============ ============ NOTES TO FINANCIAL STATEMENTS (UNAUDITED) ================================================================================ 1. ORGANIZATION. The GAMCO Global Opportunity Fund (the "Fund"), formerly, The Gabelli Global Opportunity Fund, a series of GAMCO Global Series Funds, Inc. (the "Corporation"), formerly, Gabelli Global Series Funds, Inc., was organized on July 16, 1993 as a Maryland corporation. The Fund is a non-diversified open-end management investment company registered under the Investment Company Act of 1940, as amended (the "1940 Act"), and one of four separately managed portfolios (collectively, the "Portfolios") of the Corporation. The Fund's primary objective is capital appreciation. The Fund commenced investment operations on May 11, 1998. 2. SIGNIFICANT ACCOUNTING POLICIES. The preparation of financial statements in accordance with United States ("U.S.") generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements. SECURITY VALUATION. Portfolio securities listed or traded on a nationally recognized securities exchange or traded in the U.S. over-the-counter market for which market quotations are readily available are valued at the last quoted sale price or a market's official closing price as of the close of business on the day the securities are being valued. If there were no sales that day, the security is valued at the average of the closing bid and asked prices or, if there were no asked prices quoted on that day, then the security is valued at the closing bid price on that day. If no bid 7 THE GAMCO GLOBAL OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ or asked prices are quoted on such day, the security is valued at the most recently available price or, if the Board of Directors (the "Board") so determines, by such other method as the Board shall determine in good faith to reflect its fair market value. Portfolio securities traded on more than one national securities exchange or market are valued according to the broadest and most representative market, as determined by Gabelli Funds, LLC (the "Adviser"). Portfolio securities primarily traded on a foreign market are generally valued at the preceding closing values of such securities on the relevant market, but may be fair valued pursuant to procedures established by the Board if market conditions change significantly after the close of the foreign market but prior to the close of business on the day the securities are being valued. Debt instruments with remaining maturities of 60 days or less that are not credit impaired are valued at amortized cost, unless the Board determines such amount does not reflect the securities' fair value, in which case these securities will be fair valued as determined by the Board. Debt instruments having a maturity greater than 60 days for which market quotations are readily available are valued at the average of the latest bid and asked prices. If there were no asked prices quoted on such day, the security is valued using the closing bid price. Futures contracts are valued at the closing settlement price of the exchange or board of trade on which the applicable contract is traded. Securities and assets for which market quotations are not readily available are fair valued as determined by the Board. Fair valuation methodologies and procedures may include, but are not limited to: analysis and review of available financial and non-financial information about the company; comparisons to the valuation and changes in valuation of similar securities, including a comparison of foreign securities to the equivalent U.S. dollar value ADR securities at the close of the U.S. exchange; and evaluation of any other information that could be indicative of the value of the security. In September 2006, the Financial Accounting Standards Board (the "FASB") issued Statement of Financial Accounting Standards ("SFAS") 157, Fair Value Measurements, which clarifies the definition of fair value and requires companies to expand their disclosure about the use of fair value to measure assets and liabilities in interim and annual periods subsequent to initial recognition. Adoption of SFAS 157 requires the use of the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. SFAS 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. At this time, management is in the process of reviewing the requirements of SFAS 157 against its current valuation policies to determine future applicability. REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with primary government securities dealers recognized by the Federal Reserve Board, with member banks of the Federal Reserve System, or with other brokers or dealers that meet credit guidelines established by the Adviser and reviewed by the Board. Under the terms of a typical repurchase agreement, the Fund takes possession of an underlying debt obligation subject to an obligation of the seller to repurchase, and the Fund to resell, the obligation at an agreed-upon price and time, thereby determining the yield during the Fund's holding period. The Fund will always receive and maintain securities as collateral whose market value, including accrued interest, will be at least equal to 102% of the dollar amount invested by the Fund in each agreement. The Fund will make payment for such securities only upon physical delivery or upon evidence of book entry transfer of the collateral to the account of the custodian. To the extent that any repurchase transaction exceeds one business day, the value of the collateral is marked-to-market on a daily basis to maintain the adequacy of the collateral. If the seller defaults and the value of the collateral declines or if bankruptcy proceedings are commenced with respect to the seller of the security, realization of the collateral by the Fund may be delayed or limited. At June, 2007, there were no open repurchase agreements. 8 THE GAMCO GLOBAL OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ SECURITIES SOLD SHORT. The Fund may enter into short sale transactions. Short selling involves selling securities that may or may not be owned and, at times, borrowing the same securities for delivery to the purchaser, with an obligation to replace such borrowed securities at a later date. The proceeds received from short sales are recorded as liabilities and the Fund records an unrealized gain or loss to the extent of the difference between the proceeds received and the value of an open short position on the day of determination. The Fund records a realized gain or loss when the short position is closed out. By entering into a short sale, the Fund bears the market risk of an unfavorable change in the price of the security sold short. Dividends on short sales are recorded as an expense by the Fund on the ex-dividend date and interest expense is recorded on the accrual basis. The Fund did not hold any short positions as of June 30, 2007. FORWARD FOREIGN EXCHANGE CONTRACTS. The Fund may engage in forward foreign exchange contracts for hedging a specific transaction with respect to either the currency in which the transaction is denominated or another currency as deemed appropriate by the Adviser. Forward foreign exchange contracts are valued at the forward rate and are marked-to-market daily. The change in market value is included in unrealized appreciation/depreciation on investments and foreign currency translations. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. The use of forward foreign exchange contracts does not eliminate fluctuations in the underlying prices of the Fund's portfolio securities, but it does establish a rate of exchange that can be achieved in the future. Although forward foreign exchange contracts limit the risk of loss due to a decline in the value of the hedged currency, they also limit any potential gain that might result should the value of the currency increase. In addition, the Fund could be exposed to risks if the counterparties to the contracts are unable to meet the terms of their contracts. At June 30, 2007, there were no open forward foreign exchange contracts. FOREIGN CURRENCY TRANSLATIONS. The books and records of the Fund are maintained in U.S. dollars. Foreign currencies, investments, and other assets and liabilities are translated into U.S. dollars at the current exchange rates. Purchases and sales of investment securities, income, and expenses are translated at the exchange rate prevailing on the respective dates of such transactions. Unrealized gains and losses that result from changes in foreign exchange rates and/or changes in market prices of securities have been included in unrealized appreciation/depreciation on investments and foreign currency translations. Net realized foreign currency gains and losses resulting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions, and the difference between the amounts of interest and dividends recorded on the books of the Fund and the amounts actually received. The portion of foreign currency gains and losses related to fluctuation in exchange rates between the initial trade date and subsequent sale trade date is included in realized gain/(loss) on investments. FOREIGN SECURITIES. The Fund may directly purchase securities of foreign issuers. Investing in securities of foreign issuers involves special risks not typically associated with investing in securities of U.S. issuers. The risks include possible revaluation of currencies, the ability to repatriate funds, less complete financial information about companies, and possible future adverse political and economic developments. Moreover, securities of many foreign issuers and their markets may be less liquid and their prices more volatile than those of securities of comparable U.S. issuers. 9 THE GAMCO GLOBAL OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ FOREIGN TAXES. The Fund may be subject to foreign taxes on income, gains on investments, or currency repatriation, a portion of which may be recoverable. The Fund will accrue such taxes and recoveries as applicable, based upon its current interpretation of tax rules and regulations that exist in the markets in which it invests. SECURITIES TRANSACTIONS AND INVESTMENT INCOME. Securities transactions are accounted for on the trade date with realized gain or loss on investments determined by using the identified cost method. Interest income (including amortization of premium and accretion of discount) is recorded on the accrual basis. Premiums and discounts on debt securities are amortized using the effective yield to maturity method. Dividend income is recorded on the ex-dividend date except for certain dividends which are recorded as soon as the Fund is informed of the dividend. DETERMINATION OF NET ASSET VALUE AND CALCULATION OF EXPENSES. Certain administrative expenses are common to, and allocated among, various affiliated funds. Such allocations are made on the basis of each Fund's average net assets or other criteria directly affecting the expenses as determined by the Adviser pursuant to procedures established by the Board. In calculating the NAV per share of each class, investment income, realized and unrealized gains and losses, redemption fees, and expenses other than class specific expenses are allocated daily to each class of shares based upon the proportion of net assets of each class at the beginning of each day. Distribution expenses are borne solely by the class incurring the expense. CUSTODIAN FEE CREDITS AND INTEREST EXPENSE. When cash balances are maintained in the custody account, the Fund receives credits which are used to offset custodian fees. The gross expenses paid under the custody arrangement are included in custodian fees in the Statement of Operations with the corresponding expense offset, if any, shown as "custodian fee credits". When cash balances are overdrawn, the Fund is charged an overdraft fee equal to 2.00% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. DISTRIBUTIONS TO SHAREHOLDERS. Distributions to shareholders are recorded on the ex-dividend date. Distributions to shareholders are based on income and capital gains as determined in accordance with federal income tax regulations, which may differ from income and capital gains as determined under U.S. generally accepted accounting principles. These differences are primarily due to differing treatments of income and gains on various investment securities and foreign currency transactions held by the Fund, timing differences, and differing characterizations of distributions made by the Fund. Distributions from net investment income include net realized gains on foreign currency transactions. These book/tax differences are either temporary or permanent in nature. To the extent these differences are permanent, adjustments are made to the appropriate capital accounts in the period when the differences arise. These reclassifications have no impact on the NAV of the Fund. The tax character of distributions paid during the fiscal year ended December 31, 2006 was $3,979 of ordinary income. PROVISION FOR INCOME TAXES. The Fund intends to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). It is the policy of the Fund to comply with the requirements of the Code applicable to regulated investment companies and to distribute substantially all of its net investment company taxable income and net capital gains. Therefore, no provision for federal income taxes is required. 10 THE GAMCO GLOBAL OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ At December 31, 2006, The Fund had net capital loss carryforwards for federal income tax purposes of $6,001,443, which are available to reduce future required distributions of net capital gains to shareholders. $1,119,397 of the loss carryforward is available through 2009; $1,904,804 is available through 2010; $1,776,091 is available through 2011; and $1,201,151 is available through 2012. The following summarizes the tax cost of investments and the related unrealized appreciation/(depreciation) at June 30, 2007: GROSS GROSS UNREALIZED UNREALIZED NET UNREALIZED COST APPRECIATION DEPRECIATION APPRECIATION ---- ------------ ------------ ------------ Investments ...... $14,821,382 $9,670,130 $(159,080) $9,511,050 In July 2006, the FASB issued Interpretation No. 48, "Accounting for Uncertainty in Income Taxes, an Interpretation of FASB Statement No. 109" ("the Interpretation"). The Interpretation established for all entities, including pass-through entities such as the Fund, a minimum threshold for financial statement recognition of the benefit of positions taken in filing tax returns (including whether an entity is taxable in a particular jurisdiction), and required certain expanded tax disclosures. The Interpretation was implemented by the Fund on June 29, 2007 and applied to all open tax years as of the effective date. Management has evaluated the application of the Interpretation to the Fund, and the adoption of the Interpretation had no impact on the amounts reported in the financial statements. 3. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS. The Fund has entered into an investment advisory agreement (the "Advisory Agreement") with the Adviser which provides that the Fund will pay the Adviser a fee, computed daily and paid monthly, at the annual rate of 1.00% of the value of its average daily net assets. In accordance with the Advisory Agreement, the Adviser provides a continuous investment program for the Fund's portfolio, oversees the administration of all aspects of the Fund's business and affairs, and pays the compensation of all Officers and Directors of the Fund who are affiliated persons of the Adviser. Effective January 1, 2007, the Adviser has contractually agreed to waive its investment advisory fee and/or to reimburse expenses of the Fund to the extent necessary to maintain the annualized total operating expenses of the Fund (excluding brokerage, interest, taxes, and extraordinary expenses) at no more than 2.00%, 2.00%, 2.75%, and 2.75% of the value of the Fund's average daily net assets for Class AAA, Class A, Class B, and Class C, respectively. In addition, the Fund has agreed, during the two year period following any waiver or reimbursement by the Adviser, to repay such amount to the extent, that after giving the effect to the repayment, such adjusted annualized total operating expenses of the Fund would not exceed 2.00%, 2.00%, 2.75%, and 2.75% of the value of the Fund's average daily net assets for Class AAA, Class A, Class B, and Class C, respectively. The cumulative amount which the Fund may repay the Adviser is $20,594. For the six months ended June 30, 2007, the Fund repaid the Adviser $5,638. If total net assets of the Corporation are in excess of $100 million, the Corporation pays each Director that is not considered to be an affiliated person an annual retainer of $3,000 plus $500 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. If total net assets of the Corporation are below $100 million, the Corporation pays each Independent Director an annual retainer of $1,500 plus $250 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. All Board committee members receive $500 per meeting attended. Directors who are directors or employees of the Adviser or an affiliated company receive no compensation or expense reimbursement from the Fund. 11 THE GAMCO GLOBAL OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ 4. DISTRIBUTION PLAN. The Fund's Board has adopted a distribution plan (the "Plan") for each class of shares pursuant to Rule 12b-1 under the 1940 Act. Gabelli & Company, Inc. ("Gabelli & Company"), an affiliate of the Adviser, serves as distributor of the Fund. Under the Class AAA, Class A, Class B, and Class C Share Plans, payments are authorized to Gabelli & Company at annual rates of 0.25%, 0.25%, 1.00%, and 1.00%, respectively, of the average daily net assets of those classes, the annual limitations under each Plan. Such payments are accrued daily and paid monthly. 5. PORTFOLIO SECURITIES. Purchases and proceeds from the sales of securities for the six months ended June 30, 2007, other than short-term securities, aggregated $3,474,776 and $4,991,598, respectively. 6. TRANSACTIONS WITH AFFILIATES. During the six months ended June 30, 2007, the Fund paid brokerage commissions of $1,352 to Gabelli & Company. Additionally, Gabelli & Company informed the Fund that it received $14 from investors representing commissions (sales charges and underwriting fees) on sales and redemptions of Fund shares. 7. LINE OF CREDIT. Effective June 20, 2007, the Fund participates in an unsecured line of credit of up to $75,000,000, and may borrow up to 10% of its net assets from the custodian for temporary borrowing purposes. Prior to June 20, 2007, the line of credit was $25,000,000. Borrowings under this arrangement bear interest at 0.75% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. At June 30, 2007, there were no borrowings outstanding under the line of credit. The average daily amount of borrowings outstanding from the line of credit within the six months ended June 30, 2007 was $89,331 with a related weighted average interest rate of 6.03%. The maximum amount borrowed at any time during this period was $1,097,000. 8. CAPITAL STOCK TRANSACTIONS. The Fund currently offers four classes of shares - - Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares. Class AAA Shares are offered only to investors who acquire them directly from Gabelli & Company, or through selected broker/dealers, or the transfer agent without a sales charge. Class A Shares are subject to a maximum front-end sales charge of 5.75%. Class B Shares are subject to a contingent deferred sales charge ("CDSC") upon redemption within six years of purchase and automatically convert to Class A Shares approximately eight years after the original purchase. The applicable CDSC is equal to a declining percentage of the lesser of the NAV per share at the date of the original purchase or at the date of redemption, based on the length of time held. Class C Shares are subject to a 1.00% CDSC for one year after purchase. Class B Shares are available only through exchange of Class B Shares of other funds distributed by Gabelli & Company. The Board has approved Class I Shares which have not been offered publicly. The Fund imposes a redemption fee of 2.00% on Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares that are redeemed or exchanged on or before the seventh day after the date of a purchase. The redemption fee is deducted from the proceeds otherwise payable to the redeeming shareholders and is retained by the Fund. The redemption fees retained by the Fund during the six months ended June 30, 2007 and the fiscal year ended December 31, 2006 amounted to $11 and $499, respectively. The redemption fee does not apply to redemptions of shares where (i) the shares were purchased through automatic reinvestment of dividends or other distributions, (ii) the redemption was initiated by the Fund, (iii) the shares were purchased through programs that collect the redemption fee at the program level and remit them to the Fund, or (iv) the shares were purchased through programs that the Adviser determines to have appropriate anti-short-term trading policies in place or as to which the Adviser has received assurances that look-through redemption fee procedures or effective anti-short-term trading policies and procedures are in place. 12 THE GAMCO GLOBAL OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ Transactions in shares of capital stock were as follows: SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 -------------------------- ----------------------------- SHARES AMOUNT SHARES AMOUNT -------- ----------- ---------- ------------ CLASS AAA CLASS AAA -------------------------- ----------------------------- Shares sold .......................................... 170,897 $ 3,345,354 283,265 $ 4,840,122 Shares issued upon reinvestment of distributions ..... -- -- 206 3,759 Shares redeemed ...................................... (265,482) (5,011,719) (344,742) (5,865,917) -------- ----------- ---------- ------------ Net decrease ....................................... (94,585) $(1,666,365) (61,271) $ (1,022,036) ======== =========== ========== ============ CLASS A CLASS A -------------------------- ----------------------------- Shares sold .......................................... 499 $ 9,905 3,963 $ 67,574 Shares issued upon reinvestment of distributions ..... -- -- 5 97 Shares redeemed ...................................... (3,518) (68,778) (7,241) (125,607) -------- ----------- ---------- ------------ Net decrease ....................................... (3,019) $ (58,873) (3,273) $ (57,936) ======== =========== ========== ============ CLASS B CLASS B -------------------------- ----------------------------- Shares redeemed ...................................... (1,112) $ (20,354) (1,701) $ (27,495) -------- ----------- ---------- ------------ Net decrease ....................................... (1,112) $ (20,354) (1,701) $ (27,495) ======== =========== ========== ============ 9. INDEMNIFICATIONS. The Fund enters into contracts that contain a variety of indemnifications. The Fund's maximum exposure under these arrangements is unknown. However, the Fund has not had prior claims or losses pursuant to these contracts and expects the risk of loss to be remote. 10. OTHER MATTERS. The Adviser and/or affiliates received subpoenas from the Attorney General of the State of New York and the SEC requesting information on mutual fund share trading practices involving certain funds managed by the Adviser. GAMCO Investors, Inc. ("GAMCO"), the Adviser's parent company, responded to these requests for documents and testimony. In June 2006, GAMCO began discussions with the SEC regarding a possible resolution of their inquiry. In February 2007, the Adviser made an offer of settlement to the staff of the SEC for communication to the Commission for its consideration to resolve this matter. This offer of settlement is subject to agreement regarding the specific language of the SEC's administrative order and other settlement documents. On a separate matter, in September 2005, the Adviser was informed by the staff of the SEC that the staff may recommend to the Commission that an administrative remedy and a monetary penalty be sought from the Adviser in connection with the actions of two of seven closed-end funds managed by the Adviser relating to Section 19(a) and Rule 19a-1 of the 1940 Act. These provisions require registered investment companies to provide written statements to shareholders when a dividend is made from a source other than net investment income. While the two closed-end funds sent annual statements and provided other materials containing this information, the funds did not send written statements to shareholders with each distribution in 2002 and 2003. The Adviser believes that all of the funds are now in compliance. The Adviser believes that these matters would have no effect on the Fund or any material adverse effect on the Adviser or its ability to manage the Fund. 13 THE GAMCO GLOBAL OPPORTUNITY FUND FINANCIAL HIGHLIGHTS ================================================================================ Selected data for a share of capital stock outstanding throughout each period: INCOME FROM INVESTMENT OPERATIONS DISTRIBUTIONS -------------------------------------- --------------------------- Net Net Asset Net Realized and Total Period Value, Investment Unrealized from Net Ended Beginning Income Gain (Loss) on Investment Investment Total Redemption December 31, of Period (Loss)(a) Investments Operations Income Distributions Fees(a) - ------------ --------- ---------- ------------- ---------- ---------- ------------- ---------- CLASS AAA 2007(d) $18.22 $ 0.03 $ 1.98 $ 2.01 -- -- $0.00(e) 2006 15.91 (0.08) 2.39 2.31 $(0.00)(e) $(0.00)(e) 0.00(e) 2005 13.84 0.01 2.08 2.09 (0.02) (0.02) 0.00(e) 2004 12.18 0.03 1.68 1.71 (0.05) (0.05) 0.00(e) 2003 8.87 0.00(e) 3.29 3.29 (0.01) (0.01) 0.03 2002 10.02 0.00(e) (1.15) (1.15) -- -- -- CLASS A 2007(d) $18.17 $ 0.02 $ 1.98 $ 2.00 -- -- $0.00(e) 2006 15.87 (0.08) 2.39 2.31 $(0.01) $(0.01) 0.00(e) 2005 13.81 0.01 2.09 2.10 (0.04) (0.04) 0.00(e) 2004 12.16 0.03 1.67 1.70 (0.05) (0.05) 0.00(e) 2003 8.86 0.00(e) 3.28 3.28 (0.01) (0.01) 0.03 2002 9.99 0.00(e) (1.13) (1.13) -- -- -- CLASS B 2007(d) $17.61 $(0.08) $ 1.94 $ 1.86 -- -- $0.00(e) 2006 15.49 (0.19) 2.31 2.12 -- -- 0.00(e) 2005 13.56 (0.08) 2.01 1.93 -- -- 0.00(e) 2004 12.00 (0.07) 1.66 1.59 $(0.03) $(0.03) 0.00(e) 2003 8.80 (0.07) 3.24 3.17 -- -- 0.03 2002 10.00 (0.07) (1.13) (1.20) -- -- -- CLASS C 2007(d) $18.45 $(0.04) $ 1.99 $ 1.95 -- -- $0.00(e) 2006 16.22 (0.21) 2.44 2.23 -- -- 0.00(e) 2005 14.17 (0.10) 2.15 2.05 -- -- 0.00(e) 2004 12.39 0.07 1.71 1.78 -- -- 0.00(e) 2003 9.00 (0.07) 3.43 3.36 -- -- 0.03 2002 10.11 (0.07) (1.04) (1.11) -- -- -- RATIOS TO AVERAGE NET ASSETS/SUPPLEMENTAL DATA ------------------------------------------------------------------ Net Asset Net Assets Net Operating Operating Period Value, End of Investment Expenses Expenses Portfolio Ended End of Total Period Income Before Net of Turnover December 31, Period Return+ (in 000's) (Loss) Reimbursement Reimbursement(b)(c) Rate - ------------ -------- ------- ---------- --------- ------------- ------------------- -------- CLASS AAA 2007(d) $20.23 11.0% $24,088 0.33% 2.03%(f)(g) 2.03%(f) 15% 2006 18.22 14.5 23,426 (0.44) 2.02(g) 2.02(h) 15 2005 15.91 15.1 21,425 0.10 2.04 1.85(h) 26 2004 13.84 14.0 21,033 0.25 2.00 1.50 35 2003 12.18 37.4 19,305 0.04 1.83 1.52 13 2002 8.87 (11.5) 15,000 (0.05) 2.39 1.59 0 CLASS A 2007(d) $20.17 11.0% $ 183 0.24% 2.03%(f)(g) 2.03%(f) 15% 2006 18.17 14.5 220 (0.45) 2.02(g) 2.02(h) 15 2005 15.87 15.2 244 0.05 2.06 1.87(h) 26 2004 13.81 14.0 106 0.26 2.00 1.50 35 2003 12.16 37.4 67 0.04 1.83 1.52 13 2002 8.86 (11.3) 36 (0.05) 2.39 1.59 0 CLASS B 2007(d) $19.47 10.6% $ 6 (0.92)% 2.78%(f)(g) 2.78%(f) 15% 2006 17.61 13.7 25 (1.14) 2.77(g) 2.77(h) 15 2005 15.49 14.2 48 (0.60) 2.79 2.58(h) 26 2004 13.56 13.2 52 (0.53) 2.75 2.25 35 2003 12.00 36.4 12 (0.71) 2.58 2.27 13 2002 8.80 (12.0) 9 (0.80) 3.14 2.34 0 CLASS C 2007(d) $20.40 10.6% $ 5 (0.41)% 2.78%(f)(g) 2.78%(f) 15% 2006 18.45 13.8 4 (1.20) 2.77(g) 2.77(h) 15 2005 16.22 14.5 4 (0.66) 2.79 2.68(h) 26 2004 14.17 14.4 0.1 0.58 2.75 2.25 35 2003 12.39 37.7 0.1 (0.71) 2.58 2.27 13 2002 9.00 (11.0) 0.1 (0.80) 3.14 2.34 0 - ---------- + Total return represents aggregate total return of a hypothetical $1,000 investment at the beginning of the period and sold at the end of the period including reinvestment of distributions and does not reflect applicable sales charges. Total return for a period of less than one year is not annualized. (a) Per share data is calculated using the average shares outstanding method. (b) The Fund incurred interest expense during the fiscal years ended December 31, 2004, 2003, and 2002. If interest expense had not been incurred, the ratios of operating expenses to average net assets would have been 1.50%, 1.50%, 2.25% and 2.25% for Class AAA, Class A, Class B, and Class C, respectively for each year. (c) The Fund incurred interest expense during the six months ended June 30, 2007 and the fiscal years ended December 31, 2006 and 2005. If interest expense had not been incurred, the ratios of operating expenses to average net assets would have been 2.00%, 2.00%, and 1.84% (Class AAA), 2.00%, 2.00%, and 1.86% (Class A), 2.75%, 2.75%, and 2.57% (Class B), and 2.75%, 2.75% and 2.68% (Class C), respectively. (d) For the period ended June 30, 2007, unaudited. (e) Amount represents less than $0.005 per share. (f) Annualized. (g) Under an expense deferral agreement with the Adviser, the Fund repaid the Adviser $5,638 during the six months ended June 30, 2007 and $14,200 during 2006, representing previously reimbursed expenses from the Adviser. During the six months ended June 30, 2007 and the fiscal year ended December 31, 2006, had such payment not been made, the expense ratio would have been 1.98% and 1.95% (Class AAA), 1.98% and 1.95% (Class A), 2.73% and 2.70% (Class B), and 2.73% and 2.70% (Class C), respectively. (h) The ratios do not include a reduction of expenses for custodian fee credits on cash balances maintained with the custodian. Including such custodian fee credits, the expense ratios for the fiscal year ended December 31, 2005 would have been 1.84%, 1.87%, 2.58%, and 2.68% for Class AAA, Class A, Class B, and Class C, respectively. For the fiscal year ended December 31, 2006, the effect of the custodian fee credits was minimal. See accompanying notes to financial statements. 14 - -------------------------------------------------------------------------------- GABELLI/GAMCO FUNDS AND YOUR PERSONAL PRIVACY ================================================================================ WHO ARE WE? The Gabelli/GAMCO Funds are investment companies registered with the Securities and Exchange Commission under the Investment Company Act of 1940. We are managed by Gabelli Funds, LLC and Gabelli Advisers, Inc., which are affiliated with GAMCO Investors, Inc. GAMCO Investors, Inc. is a publicly held company that has subsidiaries that provide investment advisory or brokerage services for a variety of clients. WHAT KIND OF NON-PUBLIC INFORMATION DO WE COLLECT ABOUT YOU IF YOU BECOME A SHAREHOLDER? If you apply to open an account directly with us, you will be giving us some non-public information about yourself. The non-public information we collect about you is: o INFORMATION YOU GIVE US ON YOUR APPLICATION FORM. This could include your name, address, telephone number, social security number, bank account number, and other information. o INFORMATION ABOUT YOUR TRANSACTIONS WITH US, ANY TRANSACTIONS WITH OUR AFFILIATES, AND TRANSACTIONS WITH THE ENTITIES WE HIRE TO PROVIDE SERVICES TO YOU. This would include information about the shares that you buy or redeem. If we hire someone else to provide services--like a transfer agent--we will also have information about the transactions that you conduct through them. WHAT INFORMATION DO WE DISCLOSE AND TO WHOM DO WE DISCLOSE IT? We do not disclose any non-public personal information about our customers or former customers to anyone other than our affiliates, our service providers who need to know such information, and as otherwise permitted by law. If you want to find out what the law permits, you can read the privacy rules adopted by the Securities and Exchange Commission. They are in volume 17 of the Code of Federal Regulations, Part 248. The Commission often posts information about its regulations on its web site, www.sec.gov. WHAT DO WE DO TO PROTECT YOUR PERSONAL INFORMATION? We restrict access to non-public personal information about you to the people who need to know that information in order to provide services to you or the Fund and to ensure that we are complying with the laws governing the securities business. We maintain physical, electronic, and procedural safeguards to keep your personal information confidential. - -------------------------------------------------------------------------------- GAMCO Global Series Funds, Inc. THE GAMCO GLOBAL OPPORTUNITY FUND One Corporate Center Rye, New York 10580-1422 800-GABELLI 800-422-3554 FAX: 914-921-5118 WEBSITE: WWW.GABELLI.COM E-MAIL: INFO@GABELLI.COM Net Asset Value per share available daily by calling 800-GABELLI after 6:00 P.M. BOARD OF DIRECTORS Mario J. Gabelli, CFA John D. Gabelli CHAIRMAN AND CHIEF SENIOR VICE PRESIDENT EXECUTIVE OFFICER GABELLI & COMPANY, INC. GAMCO INVESTORS, INC. E. Val Cerutti Werner J. Roeder, MD CHIEF EXECUTIVE OFFICER MEDICAL DIRECTOR CERUTTI CONSULTANTS, INC. LAWRENCE HOSPITAL Anthony J. Colavita Anthonie C. van Ekris ATTORNEY-AT-LAW CHAIRMAN ANTHONY J. COLAVITA, P.C. BALMAC INTERNATIONAL, INC. Arthur V. Ferrara Salvatore J. Zizza FORMER CHAIRMAN AND CHAIRMAN CHIEF EXECUTIVE OFFICER ZIZZA & CO., LTD. GUARDIAN LIFE INSURANCE COMPANY OF AMERICA OFFICERS Bruce N. Alpert James E. McKee PRESIDENT SECRETARY Agnes Mullady Peter D. Goldstein TREASURER CHIEF COMPLIANCE OFFICER DISTRIBUTOR Gabelli & Company, Inc. CUSTODIAN, TRANSFER AGENT, AND DIVIDEND AGENT State Street Bank and Trust Company LEGAL COUNSEL Skadden, Arps, Slate, Meagher & Flom LLP - -------------------------------------------------------------------------------- This report is submitted for the general information of the shareholders of The GAMCO Global Opportunity Fund. It is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. - -------------------------------------------------------------------------------- GAB403Q207SR GAMCO THE GAMCO GLOBAL OPPORTUNITY FUND SEMI-ANNUAL REPORT JUNE 30, 2007 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND SEMI-ANNUAL REPORT JUNE 30, 2007 TO OUR SHAREHOLDERS, During the second quarter of 2007, The GAMCO Global Telecommunications Fund (the "Fund") rose 9.0%, while the Morgan Stanley Capital International All Country ("MSCI AC") World Telecommunication Services Index was up 10.3% and the MSCI AC World Free Index advanced 7.4%. For the six month period ended June 30, 2007, the Fund was up 14.1% versus gains of 14.7% and 10.2% for the MSCI AC World Telecommunication Services Index and the MSCI AC World Free Index, respectively. COMPARATIVE RESULTS - --------------------------------------------------------------------------------------------------------------------- AVERAGE ANNUAL RETURNS THROUGH JUNE 30, 2007 (A) ------------------------------------------------ Since Year to Inception Quarter Date 1 Year 3 Year 5 Year 10 Year (11/1/93) - --------------------------------------------------------------------------------------------------------------------- GAMCO GLOBAL TELECOMMUNICATIONS FUND CLASS AAA .............................. 8.97% 14.07% 40.01% 21.96% 22.47% 11.96% 11.72% MSCI AC World Telecommunication Services Index* ........................ 10.30 14.70 43.70 -- -- -- -- MSCI AC World Free Index ................. 7.42 10.19 25.83 18.57 15.44 7.64 9.46 Class A .................................. 9.03 14.13 40.14 21.97 22.48 11.97 11.73 2.76(b) 7.57(b) 32.08(b) 19.58(b) 21.04(b) 11.31(b) 11.24(b) Class B .................................. 8.74 13.61 38.99 21.04 21.54 11.38 11.29 3.74(c) 8.61(c) 33.99(c) 20.35(c) 21.36(c) 11.38 11.29 Class C .................................. 8.71 13.56 38.94 21.02 21.54 11.37 11.28 7.71(d) 12.56(d) 37.94(d) 21.02 21.54 11.37 11.28 THE CURRENT EXPENSE RATIO FOR CLASS AAA, A, B, AND C SHARES IS 1.56%, 1.56%, 2.31%, AND 2.31%, RESPECTIVELY. CLASS AAA SHARES DO NOT HAVE A SALES CHARGE. THE MAXIMUM SALES CHARGE FOR CLASS A, B, AND C SHARES IS 5.75%, 5.00%, AND 1.00%, RESPECTIVELY. (a) RETURNS REPRESENT PAST PERFORMANCE AND DO NOT GUARANTEE FUTURE RESULTS. TOTAL RETURNS AND AVERAGE ANNUAL RETURNS REFLECT CHANGES IN SHARE PRICE AND REINVESTMENT OF DISTRIBUTIONS AND ARE NET OF EXPENSES. INVESTMENT RETURNS AND THE PRINCIPAL VALUE OF AN INVESTMENT WILL FLUCTUATE. WHEN SHARES ARE REDEEMED, THEY MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. PERFORMANCE RETURNS FOR PERIODS LESS THAN ONE YEAR ARE NOT ANNUALIZED. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE DATA PRESENTED. VISIT WWW.GABELLI.COM FOR PERFORMANCE INFORMATION AS OF THE MOST RECENT MONTH END. INVESTORS SHOULD CAREFULLY CONSIDER THE INVESTMENT OBJECTIVES, RISKS, CHARGES, AND EXPENSES OF THE FUND BEFORE INVESTING. THE PROSPECTUS CONTAINS MORE INFORMATION ABOUT THIS AND OTHER MATTERS AND SHOULD BE READ CAREFULLY BEFORE INVESTING. THE CLASS AAA SHARES' NET ASSET VALUES ("NAV'S") PER SHARE ARE USED TO CALCULATE PERFORMANCE FOR THE PERIODS PRIOR TO THE ISSUANCE OF CLASS A SHARES, CLASS B SHARES, AND CLASS C SHARES ON MARCH 12, 2000, MARCH 13, 2000, AND JUNE 2, 2000, RESPECTIVELY. THE ACTUAL PERFORMANCE FOR THE CLASS B SHARES AND CLASS C SHARES WOULD HAVE BEEN LOWER DUE TO THE ADDITIONAL EXPENSES ASSOCIATED WITH THESE CLASSES OF SHARES. INVESTING IN FOREIGN SECURITIES INVOLVES RISKS NOT ORDINARILY ASSOCIATED WITH INVESTMENTS IN DOMESTIC ISSUES, INCLUDING CURRENCY FLUCTUATION, ECONOMIC, AND POLITICAL RISKS. THE MSCI AC WORLD TELECOMMUNICATION SERVICES INDEX AND THE MSCI AC WORLD FREE INDEX ARE UNMANAGED INDICATORS OF GLOBAL STOCK MARKET PERFORMANCE. DIVIDENDS ARE CONSIDERED REINVESTED. YOU CANNOT INVEST DIRECTLY IN AN INDEX. (b) INCLUDES THE EFFECT OF THE MAXIMUM 5.75% SALES CHARGE AT THE BEGINNING OF THE PERIOD. (c) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS B SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, ONE YEAR, THREE YEAR, AND FIVE YEAR PERIODS OF 5%, 5%, 5%, 3%, AND 2%, RESPECTIVELY, OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. CLASS B SHARES ARE NOT AVAILABLE FOR NEW PURCHASES. (d) PERFORMANCE RESULTS INCLUDE THE DEFERRED SALES CHARGES FOR THE CLASS C SHARES UPON REDEMPTION AT THE END OF THE QUARTER, YEAR TO DATE, AND ONE YEAR PERIODS OF 1% OF THE FUND'S NAV AT THE TIME OF PURCHASE OR SALE, WHICHEVER IS LOWER. * NOT USED AS A BENCHMARK INDEX PRIOR TO JUNE 30, 2006. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- We have separated the portfolio managers' commentary from the financial statements and investment portfolio due to corporate governance regulations stipulated by the Sarbanes-Oxley Act of 2002. We have done this to ensure that the content of the portfolio managers' commentary is unrestricted. The financial statements and investment portfolio are mailed separately from the commentary. Both the commentary and the financial statements, including the portfolio of investments, will be available on our website at www.gabelli.com/funds. - -------------------------------------------------------------------------------- THE GAMCO GLOBAL TELECOMMUNICATIONS FUND DISCLOSURE OF FUND EXPENSES (UNAUDITED) For the Six Month Period from January 1, 2007 through June 30, 2007 EXPENSE TABLE ================================================================================ We believe it is important for you to understand the impact of fees and expenses regarding your investment. All mutual funds have operating expenses. As a shareholder of a fund, you incur ongoing costs, which include costs for portfolio management, administrative services, and shareholder reports (like this one), among others. Operating expenses, which are deducted from a fund's gross income, directly reduce the investment return of a fund. When a fund's expenses are expressed as a percentage of its average net assets, this figure is known as the expense ratio. The following examples are intended to help you understand the ongoing costs (in dollars) of investing in your Fund and to compare these costs with those of other mutual funds. The examples are based on an investment of $1,000 made at the beginning of the period shown and held for the entire period. The Expense Table below illustrates your Fund's costs in two ways: ACTUAL FUND RETURN: This section provides information about actual account values and actual expenses. You may use this section to help you to estimate the actual expenses that you paid over the period after any fee waivers and expense reimbursements. The "Ending Account Value" shown is derived from the Fund's ACTUAL return during the past six months, and the "Expenses Paid During Period" shows the dollar amount that would have been paid by an investor who started with $1,000 in the Fund. You may use this information, together with the amount you invested, to estimate the expenses that you paid over the period. To do so, simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number given for your Fund under the heading "Expenses Paid During Period" to estimate the expenses you paid during this period. HYPOTHETICAL 5% RETURN: This section provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio. It assumes a hypothetical annualized return of 5% before expenses during the period shown. In this case - because the hypothetical return used is NOT the Fund's actual return - the results do not apply to your investment and you cannot use the hypothetical account value and expense to estimate the actual ending account balance or expenses you paid for the period. This example is useful in making comparisons of the ongoing costs of investing in the Fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in shareholder reports of other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs such as sales charges (loads), redemption fees, or exchange fees, if any, which are described in the Prospectus. If these costs were applied to your account, your costs would be higher. Therefore, the 5% hypothetical return is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. Beginning Ending Annualized Expenses Account Value Account Value Expense Paid During 01/01/07 06/30/07 Ratio Period* - -------------------------------------------------------------------------------- THE GAMCO GLOBAL TELECOMMUNICATIONS FUND - -------------------------------------------------------------------------------- ACTUAL FUND RETURN Class AAA $1,000.00 $1,140.70 1.49% $ 7.95 Class A $1,000.00 $1,141.30 1.49% $ 7.95 Class B $1,000.00 $1,136.10 2.24% $11.93 Class C $1,000.00 $1,135.60 2.24% $11.93 HYPOTHETICAL 5% RETURN Class AAA $1,000.00 $1,017.50 1.49% $ 7.49 Class A $1,000.00 $1,017.50 1.49% $ 7.49 Class B $1,000.00 $1,013.76 2.24% $11.25 Class C $1,000.00 $1,013.76 2.24% $11.25 * Expenses are equal to the Fund's annualized expense ratio for the last six months multiplied by the average account value over the period, multiplied by the number of days in the most recent fiscal half-year, then divided by 365. 2 SUMMARY OF PORTFOLIO HOLDINGS (UNAUDITED) The following table presents portfolio holdings as a percent of total net assets as of June 30, 2007: THE GAMCO GLOBAL TELECOMMUNICATIONS FUND: Diversified Telecommunications Services ....... 39.2% Wireless Telecommunications Services .......... 33.8% Other ......................................... 18.9% U.S. Government Obligations ................... 8.9% Other Assets and Liabilities (Net) ............ (0.8)% ------- 100.0% ====== THE FUND FILES A COMPLETE SCHEDULE OF PORTFOLIO HOLDINGS WITH THE SECURITIES AND EXCHANGE COMMISSION (THE "SEC") FOR THE FIRST AND THIRD QUARTERS OF EACH FISCAL YEAR ON FORM N-Q, THE LAST OF WHICH WAS FILED FOR THE QUARTER ENDED MARCH 31, 2007. SHAREHOLDERS MAY OBTAIN THIS INFORMATION AT WWW.GABELLI.COM OR BY CALLING THE FUND AT 800-GABELLI (800-422-3554). THE FUND'S FORM N-Q IS AVAILABLE ON THE SEC'S WEBSITE AT WWW.SEC.GOV AND MAY ALSO BE REVIEWED AND COPIED AT THE SEC'S PUBLIC REFERENCE ROOM IN WASHINGTON, DC. INFORMATION ON THE OPERATION OF THE PUBLIC REFERENCE ROOM MAY BE OBTAINED BY CALLING 1-800-SEC-0330. PROXY VOTING The Fund files Form N-PX with its complete proxy voting record for the 12 months ended June 30th, no later than August 31st of each year. A description of the Fund's proxy voting policies, procedures, and how the Fund voted proxies relating to portfolio securities is available without charge, upon request, by (i) calling 800-GABELLI (800-422-3554); (ii) writing to The Gabelli Funds at One Corporate Center, Rye, NY 10580-1422; or (iii) visiting the SEC's website at www.sec.gov. 3 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND SCHEDULE OF INVESTMENTS -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS -- 91.7% DIVERSIFIED TELECOMMUNICATIONS SERVICES -- 39.2% ASIA/PACIFIC -- 3.3% 20,000 Asia Satellite Telecommunications Holdings Ltd., ADR ............. $ 431,039 $ 406,500 170,000 First Pacific Co. Ltd. ........... 92,079 122,839 20,000 First Pacific Co. Ltd., ADR ...... 30,145 72,270 10 Korea Thrunet Co. Ltd.+ (a) ...... 5,250 0 10,000 KT Corp., ADR .................... 183,666 234,600 2,000 Pakistan Telecommunications Co. Ltd., GDR (b) .............. 155,765 188,523 100,000 PCCW Ltd. ........................ 81,405 61,515 72,000 Philippine Long Distance Telephone Co., ADR ............. 1,383,105 4,118,400 18,360 PT Telekomunikasi Indonesia, ADR ................. 165,504 791,316 874,000 Singapore Telecommunications Ltd. ........ 701,513 1,941,271 25,000 Telecom Corp. of New Zealand Ltd., ADR .............. 515,375 698,000 350,000 Telekom Malaysia Berhad .......... 1,547,135 1,044,171 8,000 Telkom SA Ltd. ................... 193,801 201,938 2,400 Telstra Corp. Ltd., ADR .......... 47,304 46,730 8,075 Thai Telephone & Telecom, GDR+ (b)(c) .................... 100,542 727 1,000,000 True Corp. Public Co. Ltd.+ ...... 687,194 228,096 ------------ ------------ 6,320,822 10,156,896 ------------ ------------ EUROPE -- 16.4% 39,000 BT Group plc, ADR ................ 1,474,439 2,596,620 300,000 Cable & Wireless plc ............. 544,359 1,171,734 8,960 Colt Telecom Group SA+ ........... 39,631 26,449 370,000 Deutsche Telekom AG, ADR ......... 4,629,240 6,811,700 175,000 Elisa Oyj, Cl. A ................. 2,162,268 4,789,199 38,000 France Telecom SA, ADR ........... 1,021,948 1,044,240 17,500 Golden Telecom Inc. .............. 183,065 962,675 5,507 Hellenic Telecommunications Organization SA ................ 86,065 170,685 36,000 Hellenic Telecommunications Organization SA, ADR ........... 218,770 559,800 18,000 Hungarian Telephone & Cable Corp.+ ................... 139,278 360,180 500 Magyar Telekom Telecommunications plc, ADR ....................... 9,650 13,930 42,000 Maroc Telecom .................... 660,247 654,287 15,000 Metromedia International Group Inc.+ .................... 59,576 19,950 65,000 Neuf Cegetel+ .................... 1,906,725 2,554,781 20,000 Portugal Telecom SGPS SA ......... 235,355 276,917 68,000 Portugal Telecom SGPS SA, ADR ........................ 277,645 944,520 MARKET SHARES COST VALUE ------ ---- ------- 10,000 Rostelecom, ADR .................. $ 79,578 $ 570,000 57,000 Royal KPN NV, ADR ................ 472,195 946,770 90,000 Sistema JSFC, GDR (b) ............ 1,714,268 2,556,000 98,000 Swisscom AG, ADR ................. 2,548,286 3,341,800 2,120,000 Telecom Italia SpA ............... 4,155,401 5,824,728 27,000 Telecom Italia SpA, ADR .......... 621,934 741,420 100,000 Telefonica SA, ADR ............... 2,634,654 6,676,000 6,361 Telefonica SA, BDR ............... 108,406 140,146 101,000 Telekom Austria AG ............... 1,753,734 2,528,930 15,000 Telenor ASA+ ..................... 278,729 294,432 650,000 TeliaSonera AB ................... 2,791,663 4,799,538 ------------ ------------ 30,807,109 51,377,431 ------------ ------------ JAPAN -- 0.5% 237 Nippon Telegraph & Telephone Corp. ................ 1,207,105 1,052,905 22,000 Nippon Telegraph & Telephone Corp., ADR ........... 622,716 487,740 ------------ ------------ 1,829,821 1,540,645 ------------ ------------ LATIN AMERICA -- 4.3% 33,250 Atlantic Tele-Network Inc. ....... 112,178 952,280 12,000 Brasil Telecom Participacoes SA, ADR ........................ 595,898 725,520 44 Brasil Telecom SA, Preference 474 319 17,415,054 Cable & Wireless Jamaica Ltd.+ .................. 406,745 226,021 148,000 Compania de Telecomunicaciones de Chile SA, ADR .................. 2,049,285 1,407,480 25,693 Tele Norte Leste Participacoes SA, ADR .......... 357,296 487,396 205,000 Telecom Argentina SA, ADR+ ....... 751,529 5,108,600 55,000 Telefonica de Argentina SA, ADR ........................ 348,883 1,070,300 87,000 Telefonos de Mexico SAB de CV, Cl. L, ADR ................. 643,919 3,296,430 3,355 Telemar Norte Leste SA, Preference, Cl. A .............. 148,531 92,702 ------------ ------------ 5,414,738 13,367,048 ------------ ------------ NORTH AMERICA -- 14.7% 165,000 AT&T Inc. ........................ 4,777,613 6,847,500 220,000 BCE Inc. ......................... 6,264,669 8,313,800 47,836 Bell Aliant Regional Communications Income Fund ........................... 882,832 1,407,800 39,371 Bell Aliant Regional Communications Income Fund+ (a)(b)(c) ................ 726,607 1,158,689 13,000 CenturyTel Inc. .................. 396,150 637,650 500,000 Cincinnati Bell Inc.+ ............ 3,124,004 2,890,000 65,000 Citizens Communications Co. ...... 857,408 992,550 10,000 Covad Communications Group Inc.+ .................... 15,401 9,000 See accompanying notes to financial statements. 4 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS (CONTINUED) DIVERSIFIED TELECOMMUNICATIONS SERVICES (CONTINUED) NORTH AMERICA (CONTINUED) 90,060 D&E Communications Inc. .......... $ 1,210,418 $ 1,651,700 10,000 E.Spire Communications Inc.+ ..... 50,000 9 3,230 EarthLink Inc.+ .................. 45,250 24,128 20,000 Embarq Corp. ..................... 492,315 1,267,400 55,000 FairPoint Communications, Inc. ........................... 1,135,892 976,250 80,000 General Communication Inc., Cl. A+ ................... 376,995 1,024,800 10,000 Manitoba Telecom Services Inc. .................. 371,015 440,178 22,422 McLeodUSA Inc., Cl. A+ ........... 78,431 110 130,000 McLeodUSA Inc., Cl. A, Escrow+ (a) .................... 0 0 3,000 New Ulm Telecom Inc. ............. 39,216 39,390 1,000 North Pittsburgh Systems Inc. ................... 19,772 21,250 20,000 NorthPoint Communications Group Inc.+ .................... 11,250 36 120,000 Price Communications Corp. ....... 1,858,269 2,667,600 285,000 Qwest Communications International Inc.+ ............ 996,478 2,764,500 11,000 Shenandoah Telecommunications Co. ......... 138,825 559,130 45,000 TELUS Corp. ...................... 873,965 2,693,875 33,057 TELUS Corp., Non-Voting .......... 827,048 1,947,268 8,943 TELUS Corp., Non-Voting, ADR ............................ 396,587 527,542 120,000 Time Warner Telecom Inc., Cl. A+ ......................... 2,273,301 2,412,000 100,000 Verizon Communications Inc. ...... 3,737,255 4,117,000 43,000 Windstream Corp. ................. 305,536 634,680 ------------ ------------ 32,282,502 46,025,835 ------------ ------------ TOTAL DIVERSIFIED TELECOMMUNICATIONS SERVICES ....................... 76,654,992 122,467,855 ------------ ------------ WIRELESS TELECOMMUNICATIONS SERVICES -- 33.6% ASIA/PACIFIC -- 2.7% 80,000 China Mobile Ltd., ADR ........... 1,165,904 4,312,000 75,000 China Unicom Ltd., ADR ........... 628,819 1,292,250 666 Hutchison Telecommunications International Ltd. ............. 519 859 8,000 PT Indosat Tbk, ADR .............. 78,652 290,000 90,000 SK Telecom Co. Ltd., ADR ......... 1,068,189 2,461,500 ------------ ------------ 2,942,083 8,356,609 ------------ ------------ EUROPE -- 6.3% 56,000 Bouygues SA ...................... 1,573,032 4,713,595 20,000 Millicom International Cellular SA+ ................... 1,498,087 1,832,800 800 Mobile TeleSystems OJSC, ADR ...................... 29,612 48,456 MARKET SHARES COST VALUE ------ ---- ------- 10,000 Orascom Telecom Holding SAE, GDR ....................... $ 653,276 $ 649,000 60,000 Vimpel-Communications, ADR ............................ 639,115 6,321,600 100,000 Vivendi .......................... 2,087,247 4,318,874 54,100 Vodafone Group plc, ADR .......... 1,419,746 1,819,383 ------------ ------------ 7,900,115 19,703,708 ------------ ------------ JAPAN -- 2.6% 600 KDDI Corp. ....................... 3,016,473 4,449,137 2,400 NTT DoCoMo Inc. .................. 5,827,909 3,801,015 ------------ ------------ 8,844,382 8,250,152 ------------ ------------ LATIN AMERICA -- 4.5% 208,000 America Movil SAB de CV, Cl. L, ADR ................. 1,103,854 12,881,440 17,500 Grupo Iusacell SA de CV+ ......... 29,040 257,555 460 Tele Norte Celular Participacoes SA, ADR+ ......... 7,079 5,032 1,150 Telemig Celular Participacoes SA, ADR .......... 30,497 57,891 14,900 Tim Participacoes SA, ADR ........ 438,054 513,603 3,020 Vivo Participacoes SA+ ........... 6,747 24,079 23,976 Vivo Participacoes SA, ADR ....... 316,130 120,120 13,024 Vivo Participacoes SA, Preference ..................... 159,589 64,749 ------------ ------------ 2,090,990 13,924,469 ------------ ------------ NORTH AMERICA -- 17.5% 150,000 Alltel Corp. ..................... 8,440,679 10,132,500 35,000 Centennial Communications Corp.+ ......................... 182,988 332,150 25,000 Clearwire Corp., Cl. A+ .......... 559,253 610,750 40,000 Dobson Communications Corp., Cl. A+ .................. 129,100 444,400 11,000 MetroPCS Communications Inc.+ .......................... 264,614 363,440 50,000 Nextwave Wireless Inc.+ .......... 586,479 417,500 300,000 Rogers Communications Inc., Cl. B .................... 1,563,179 12,747,000 42,000 Rural Cellular Corp., Cl. A+ ..... 410,550 1,840,020 440,000 Sprint Nextel Corp. .............. 5,808,751 9,112,400 1,000 SunCom Wireless Holdings Inc., Cl. A+ ................... 27,348 18,500 68,000 Telephone & Data Systems Inc. ................... 1,472,304 4,254,760 60,000 Telephone & Data Systems Inc., Special .......... 1,278,136 3,453,000 120,000 United States Cellular Corp.+ .... 5,744,690 10,872,000 ------------ ------------ 26,468,071 54,598,420 ------------ ------------ TOTAL WIRELESS TELECOMMUNICATIONS SERVICES ....................... 48,245,641 104,833,358 ------------ ------------ See accompanying notes to financial statements. 5 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS (CONTINUED) OTHER -- 18.9% ASIA/PACIFIC -- 0.2% 38,000 ABC Communications Holdings Ltd. .................. $ 19,234 $ 3,645 19,065 Austar United Communications Ltd.+ ........... 38,877 26,831 100,000 Champion Technology Holdings Ltd. .................. 87,982 22,381 10,000 China Education Ltd.+ ............ 9,532 3,984 70,000 CP Pokphand Co. Ltd., ADR+ ....... 58,725 80,584 26,000 Himachal Futuristic Communications Ltd., GDR+ (a)(b) .................... 141,200 58,877 50,000 Hutchison Whampoa Ltd. ........... 487,170 496,534 300,000 Time Engineering Berhad+ ......... 316,448 61,260 ------------ ------------ 1,159,168 754,096 ------------ ------------ EUROPE -- 1.7% 10,000 Alcatel-Lucent, ADR .............. 162,822 140,000 1,500 British Sky Broadcasting Group plc, ADR ................. 36,400 77,370 3,600 Carlisle Group Ltd.+ ............. 5,790 9,651 3,000 E.ON AG .......................... 126,255 504,663 59,500 G4S plc .......................... 0 252,706 98,000 GN Store Nord A/S+ ............... 533,809 1,158,519 3,200 L. M. Ericsson Telephone Co., Cl. B, ADR ................ 40,907 127,648 28,000 Nokia Corp., ADR ................. 67,091 787,080 15,428 Seat Pagine Gialle SpA ........... 30,784 9,282 750 Siemens AG, ADR .................. 23,625 107,295 5,852 Telecom Italia Media SpA+ ........ 4,669 2,150 25,000 Telegraaf Media Groep NV ......... 541,844 879,745 7,000 ThyssenKrupp AG .................. 128,725 418,096 15,000 TNT NV, ADR ...................... 198,277 677,232 1,000 Via Net.Works Inc.+ .............. 2,625 5 ------------ ------------ 1,903,623 5,151,442 ------------ ------------ JAPAN -- 0.3% 75,000 The Furukawa Electric Co. Ltd. ....................... 381,079 414,822 20,000 Tokyo Broadcasting System Inc. .................... 657,598 612,386 ------------ ------------ 1,038,677 1,027,208 ------------ ------------ LATIN AMERICA -- 0.0% 9,000 BB Holdings Ltd.+ ................ 36,940 46,575 1,400 Claxson Interactive Group Inc.+ .......................... 2,240 16,100 25,693 Contax Participacoes SA, ADR ............................ 11,050 31,615 562 OneSource Services Inc.+ ......... 5,515 7,251 ------------ ------------ 55,745 101,541 ------------ ------------ MARKET SHARES COST VALUE ------ ---- ------- NORTH AMERICA -- 16.7% 80,000 Adelphia Communications Corp., Cl. A+ .................. $ 74,756 $ 1,600 80,000 Adelphia Communications Corp., Cl. A Escrow+ ........... 0 0 80,000 Adelphia Recovery Trust+ ......... 0 0 17,000 Alliance Data Systems Corp.+ ..... 1,331,446 1,313,760 2,000 America Online Latin America Inc., Cl. A+ (a) ....... 840 4 2,000 Amphenol Corp., Cl. A ............ 8,184 71,300 3,000 Andrew Corp.+ .................... 8,535 43,320 10,000 aQuantive Inc.+ .................. 636,795 638,000 10,000 Avaya Inc.+ ...................... 166,683 168,400 130,000 Cablevision Systems Corp., Cl. A+ .................. 3,071,729 4,704,700 42,000 California Micro Devices Corp.+ ................. 245,297 170,100 23,566 CanWest Global Communications Corp.+ .......... 322,321 219,635 35,434 CanWest Global Communications Corp., Cl. A+ .................. 407,389 310,017 300,000 Charter Communications Inc., Cl. A+ ................... 1,161,344 1,215,000 210,000 Clear Channel Communications Inc. ............ 8,060,700 7,942,200 10,000 Cogeco Inc. ...................... 195,069 373,715 100,000 Comcast Corp., Cl. A, Special+ ....................... 2,086,440 2,796,000 25,000 Communications Systems Inc. ................... 237,711 277,750 4,000 Convergys Corp.+ ................. 53,716 96,960 28,000 Covansys Corp.+ .................. 942,508 950,040 42,000 Discovery Holding Co., Cl. A+ ......................... 270,887 965,580 90,000 EchoStar Communications Corp., Cl. A+ .................. 1,831,302 3,903,300 6,000 Fisher Communications Inc.+ .......................... 270,822 304,740 395,000 Gemstar-TV Guide International Inc.+ ............ 1,763,796 1,943,400 1,000 Geoworks Corp.+ .................. 1,375 31 1,000 Google Inc., Cl. A+ .............. 346,423 523,380 4,250 Idearc Inc. ...................... 130,063 150,153 45,000 IDT Corp. ........................ 424,047 452,250 40,000 IDT Corp., Cl. B ................. 309,786 412,800 1,600 JDS Uniphase Corp.+ .............. 30,931 21,488 1,000 L-3 Communications Holdings Inc. .................. 11,000 97,390 60,732 Liberty Global Inc., Cl. A+ ...... 1,330,262 2,492,441 50,000 Liberty Global Inc., Cl. C+ ...... 1,219,998 1,965,000 24,000 Liberty Media Corp. - Capital, Cl. A+ ................ 1,095,117 2,824,320 See accompanying notes to financial statements. 6 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND SCHEDULE OF INVESTMENTS (CONTINUED) -- JUNE 30, 2007 (UNAUDITED) ================================================================================ MARKET SHARES COST VALUE ------ ---- ------- COMMON STOCKS (CONTINUED) OTHER (CONTINUED) NORTH AMERICA (CONTINUED) 70,000 Liberty Media Corp. - Interactive, Cl. A+ ............ $ 634,221 $ 1,563,100 1,000 Lockheed Martin Corp. ............ 22,787 94,130 20,000 LSI Corp.+ ....................... 150,104 150,200 20,000 Mediacom Communications Corp., Cl. A+ .................. 177,215 193,800 55,000 Motorola Inc. .................... 454,388 973,500 8,000 News Corp., Cl. A ................ 116,400 169,680 2,000 News Corp., Cl. B ................ 21,050 45,880 63,000 Nortel Networks Corp.+ ........... 1,838,467 1,515,150 2,524 Orbital Sciences Corp.+ .......... 16,208 53,029 4,000 R. H. Donnelley Corp.+ ........... 53,608 303,120 10,000 SCANA Corp. ...................... 264,594 382,900 5,000 SJW Corp. ........................ 78,585 166,500 105,000 The DIRECTV Group Inc.+ .......... 2,165,652 2,426,550 20,000 Time Warner Cable Inc., Cl. A+ ......................... 770,906 783,400 189,000 Time Warner Inc. ................. 3,285,561 3,976,560 2,000 TiVo Inc.+ ....................... 11,105 11,580 1,000 Vishay Intertechnology Inc.+ ..... 22,908 15,820 47 Xanadoo Co.+ ..................... 23,394 12,549 68,000 Yahoo! Inc.+ ..................... 2,152,349 1,844,840 ------------ ------------ 40,306,774 52,031,062 ------------ ------------ TOTAL OTHER ...................... 44,463,987 59,065,349 ------------ ------------ TOTAL COMMON STOCKS .............. 169,364,620 286,366,562 ------------ ------------ RIGHTS -- 0.0% DIVERSIFIED TELECOMMUNICATIONS SERVICES -- 0.0% ASIA/PACIFIC -- 0.0% 315,789 True Corp. plc, expire 04/03/08+ (a) ........... 0 7,903 ------------ ------------ WARRANTS -- 0.2% WIRELESS TELECOMMUNICATIONS SERVICES -- 0.2% ASIA/PACIFIC -- 0.2% 35,000 Bharti Airtel Ltd., expire 12/15/16+ (b) ........... 715,209 690,014 ------------ ------------ OTHER -- 0.0% ASIA/PACIFIC -- 0.0% 22,741 Champion Technology Holdings Ltd., expire 03/08/08+ ............... 0 1,425 ------------ ------------ EUROPE -- 0.0% 1,473 Alcatel-Lucent, expire 12/10/07+ ............... 2,445 251 ------------ ------------ TOTAL OTHER ...................... 2,445 1,676 ------------ ------------ TOTAL WARRANTS ................... 717,654 691,690 ------------ ------------ PRINCIPAL MARKET AMOUNT COST VALUE ------ ---- ------- U.S. GOVERNMENT OBLIGATIONS -- 8.9% $27,763,000 U.S. Treasury Bills, 4.351% to 5.126%++, 07/12/07 to 09/27/07 ........... $ 27,628,200 $ 27,626,441 ------------ ------------ TOTAL INVESTMENTS -- 100.8% .......... $197,710,474 314,692,596 ============ OTHER ASSETS AND LIABILITIES (NET) -- (0.8)% ..... (2,353,922) ------------ NET ASSETS -- 100.0% ............................. $312,338,674 ============ - ---------------- (a) Security fair valued under procedures established by the Board of Directors. The procedures may include reviewing available financial information about the company and reviewing valuation of comparable securities and other factors on a regular basis. At June 30, 2007, the market value of fair valued securities amounted to $1,225,473 or 0.39% of total net assets. (b) Security exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers. At June 30, 2007, the market value of Rule 144A securities amounted to $4,652,830 or 1.49% of total net assets. Except as noted in (c), these securities are liquid. (c) At June 30, 2007, the Fund held investments in restricted and illiquid securities amounting to $1,159,416 or 0.37% of total net assets, which were valued under methods approved by the Board, as follows: 06/30/07 ACQUISITION CARRYING SHARES/ ACQUISITION ACQUISITION VALUE UNITS ISSUER DATE COST PER UNIT -------- ------ ----------- ----------- -------- 39,371 Bell Aliant Regional Communications Income Fund ............... 12/29/06 $726,607 $29.4300 8,075 Thai Telephone & Telecom, GDR .............. 03/31/94 100,542 0.0900 + Non-income producing security. ++ Represents annualized yield at date of purchase. ADR American Depository Receipt BDR Brazilian Depository Receipt GDR Global Depository Receipt OJSC Open Joint Stock Company % OF MARKET MARKET GEOGRAPHIC DIVERSIFICATION VALUE VALUE - -------------------------- -------- ------- North America ......................... 57.3% $180,281,758 Europe ................................ 24.0 75,583,832 Latin America ......................... 8.7 27,393,058 Asia/Pacific .......................... 6.6 20,615,943 Japan ................................. 3.4 10,818,005 ------ ------------ 100.0% $314,692,596 ====== ============ See accompanying notes to financial statements. 7 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND STATEMENT OF ASSETS AND LIABILITIES JUNE 30, 2007 (UNAUDITED) ================================================================================ ASSETS: Investments at value (cost $197,710,474) ...... $ 314,692,596 Cash .......................................... 13,414 Receivable for Fund shares sold ............... 899,514 Receivable for investments sold ............... 144,134 Dividends and interest receivable ............. 536,180 Prepaid expense ............................... 4,187 ------------- TOTAL ASSETS .................................. 316,290,025 ------------- LIABILITIES: Payable for Fund shares redeemed .............. 255,624 Payable for investments purchased ............. 3,255,305 Payable for investment advisory fees .......... 261,929 Payable for distribution fees ................. 68,060 Payable for accounting fees ................... 3,872 Payable for Directors' fees ................... 62 Other accrued expenses ........................ 106,499 ------------- TOTAL LIABILITIES ............................. 3,951,351 ------------- NET ASSETS applicable to 12,199,433 shares outstanding .......................... $ 312,338,674 ============= NET ASSETS CONSIST OF: Paid-in capital, each class at $0.001 par value $ 235,440,831 Accumulated net investment income ............. 1,925,449 Accumulated net realized loss on investments and foreign currency transactions ........... (42,015,904) Net unrealized appreciation on investments .... 116,982,122 Net unrealized appreciation on foreign currency translations ....................... 6,176 ------------- NET ASSETS .................................... $ 312,338,674 ============= SHARES OF CAPITAL STOCK: CLASS AAA: Net Asset Value, offering and redemption price per share ($304,768,971 / 11,898,060 shares outstanding; 75,000,000 shares authorized) .. $25.62 ====== CLASS A: Net Asset Value and redemption price per share ($3,476,296 / 135,801 shares outstanding; 50,000,000 shares authorized ) .............. $25.60 ====== Maximum offering price per share (NAV / 0.9425, based on maximum sales charge of 5.75% of the offering price ) .................... $27.16 ====== CLASS B: Net Asset Value and offering price per share ($292,108 / 11,743 shares outstanding; 25,000,000 shares authorized) ............... $24.88(a) ====== CLASS C: Net Asset Value and offering price per share ($3,801,299 / 153,829 shares outstanding; 25,000,000 shares authorized) ............... $24.71(a) ====== (a) Redemption price varies based on the length of time held. STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED JUNE 30, 2007 (UNAUDITED) ================================================================================ INVESTMENT INCOME: Dividends (net of foreign taxes of $473,615) .. $ 3,598,615 Interest ...................................... 516,752 ------------ TOTAL INVESTMENT INCOME ....................... 4,115,367 ------------ EXPENSES: Investment advisory fees ...................... 1,296,202 Distribution fees - Class AAA ................. 318,939 Distribution fees - Class A ................... 2,461 Distribution fees - Class B ................... 1,487 Distribution fees - Class C ................... 9,111 Shareholder services fees ..................... 115,414 Shareholder communications expenses ........... 69,806 Custodian fees ................................ 31,558 Legal and audit fees .......................... 25,726 Accounting fees ............................... 22,621 Registration expenses ......................... 20,369 Directors' fees ............................... 12,180 Interest expense .............................. 90 Miscellaneous expenses ........................ 13,487 ------------ TOTAL EXPENSES ................................ 1,939,451 Less: Custodian fee credits ................... (3,200) ------------ NET EXPENSES .................................. 1,936,251 ------------ NET INVESTMENT INCOME ......................... 2,179,116 ------------ NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY: Net realized gain on investments .............. 3,107,812 Net realized loss on foreign currency transactions ....................... (22,088) ------------ Net realized gain on investments and foreign currency transactions ............... 3,085,724 ------------ Net change in unrealized appreciation/ depreciation on investments ................. 28,378,757 Net change in unrealized appreciation/ depreciation on foreign currency translations 3,162 ------------ Net change in unrealized appreciation/ depreciation on investments and foreign currency translations ....................... 28,381,919 ------------ NET REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS AND FOREIGN CURRENCY ............ 31,467,643 ------------ NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ............................. $ 33,646,759 ============ See accompanying notes to financial statements. 8 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND STATEMENT OF CHANGES IN NET ASSETS ================================================================================ SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 ------------- ----------------- OPERATIONS: Net investment income ............................................... $ 2,179,116 $ 1,213,397 Net realized gain on investments and foreign currency transactions .. 3,085,724 16,183,622 Net change in unrealized appreciation/depreciation on investments and foreign currency translations ................................. 28,381,919 33,122,636 ------------- ------------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS ................ 33,646,759 50,519,655 ------------- ------------- DISTRIBUTIONS TO SHAREHOLDERS: Net investment income Class AAA ......................................................... -- (1,296,097) Class A ........................................................... -- (7,802) Class C ........................................................... -- (692) ------------- ------------- TOTAL DISTRIBUTIONS TO SHAREHOLDERS ................................. -- (1,304,591) ------------- ------------- CAPITAL SHARE TRANSACTIONS: Class AAA ......................................................... 57,181,494 (20,313,616) Class A ........................................................... 2,065,471 237,838 Class B ........................................................... (37,810) (210,652) Class C ........................................................... 3,231,960 94,168 ------------- ------------- NET INCREASE (DECREASE) IN NET ASSETS FROM CAPITAL SHARE TRANSACTIONS 62,441,115 (20,192,262) ------------- ------------- REDEMPTION FEES ..................................................... 2,656 589 ------------- ------------- NET INCREASE IN NET ASSETS .......................................... 96,090,530 29,023,391 NET ASSETS: Beginning of period ................................................. 216,248,144 187,224,753 ------------- ------------- End of period (including undistributed net investment income of $1,925,449 and $0, respectively) .................................. $ 312,338,674 $ 216,248,144 ============= ============= See accompanying notes to financial statements. 9 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (UNAUDITED) ================================================================================ 1. ORGANIZATION. The GAMCO Global Telecommunications Fund (the "Fund"), formerly, The Gabelli Global Telecommunications Fund, a series of GAMCO Global Series Funds, Inc. (the "Corporation"), formerly, Gabelli Global Series Funds, Inc., was organized on July 16, 1993 as a Maryland corporation. The Fund is a non-diversified open-end management investment company registered under the Investment Company Act of 1940, as amended (the "1940 Act"), and one of four separately managed portfolios (collectively, the "Portfolios") of the Corporation. The Fund's primary objective is capital appreciation. The Fund commenced investment operations on November 1, 1993. 2. SIGNIFICANT ACCOUNTING POLICIES. The preparation of financial statements in accordance with United States ("U.S.") generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts and disclosures in the financial statements. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements. SECURITY VALUATION. Portfolio securities listed or traded on a nationally recognized securities exchange or traded in the U.S. over-the-counter market for which market quotations are readily available are valued at the last quoted sale price or a market's official closing price as of the close of business on the day the securities are being valued. If there were no sales that day, the security is valued at the average of the closing bid and asked prices or, if there were no asked prices quoted on that day, then the security is valued at the closing bid price on that day. If no bid or asked prices are quoted on such day, the security is valued at the most recently available price or, if the Board of Directors (the "Board") so determines, by such other method as the Board shall determine in good faith to reflect its fair market value. Portfolio securities traded on more than one national securities exchange or market are valued according to the broadest and most representative market, as determined by Gabelli Funds, LLC (the "Adviser"). Portfolio securities primarily traded on a foreign market are generally valued at the preceding closing values of such securities on the relevant market, but may be fair valued pursuant to procedures established by the Board if market conditions change significantly after the close of the foreign market but prior to the close of business on the day the securities are being valued. Debt instruments with remaining maturities of 60 days or less that are not credit impaired are valued at amortized cost, unless the Board determines such amount does not reflect the securities' fair value, in which case these securities will be fair valued as determined by the Board. Debt instruments having a maturity greater than 60 days for which market quotations are readily available are valued at the average of the latest bid and asked prices. If there were no asked prices quoted on such day, the security is valued using the closing bid price. Futures contracts are valued at the closing settlement price of the exchange or board of trade on which the applicable contract is traded. Securities and assets for which market quotations are not readily available are fair valued as determined by the Board. Fair valuation methodologies and procedures may include, but are not limited to: analysis and review of available financial and non-financial information about the company; comparisons to the valuation and changes in valuation of similar securities, including a comparison of foreign securities to the equivalent U.S. dollar value ADR securities at the close of the U.S. exchange; and evaluation of any other information that could be indicative of the value of the security. In September 2006, the Financial Accounting Standards Board (the "FASB") issued Statement of Financial Accounting Standards ("SFAS") 157, Fair Value Measurements, which clarifies the definition of fair value and 10 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ requires companies to expand their disclosure about the use of fair value to measure assets and liabilities in interim and annual periods subsequent to initial recognition. Adoption of SFAS 157 requires the use of the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. SFAS 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007, and interim periods within those fiscal years. At this time, management is in the process of reviewing the requirements of SFAS 157 against its current valuation policies to determine future applicability. REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with primary government securities dealers recognized by the Federal Reserve Board, with member banks of the Federal Reserve System, or with other brokers or dealers that meet credit guidelines established by the Adviser and reviewed by the Board. Under the terms of a typical repurchase agreement, the Fund takes possession of an underlying debt obligation subject to an obligation of the seller to repurchase, and the Fund to resell, the obligation at an agreed-upon price and time, thereby determining the yield during the Fund's holding period. The Fund will always receive and maintain securities as collateral whose market value, including accrued interest, will be at least equal to 102% of the dollar amount invested by the Fund in each agreement. The Fund will make payment for such securities only upon physical delivery or upon evidence of book entry transfer of the collateral to the account of the custodian. To the extent that any repurchase transaction exceeds one business day, the value of the collateral is marked-to-market on a daily basis to maintain the adequacy of the collateral. If the seller defaults and the value of the collateral declines or if bankruptcy proceedings are commenced with respect to the seller of the security, realization of the collateral by the Fund may be delayed or limited. At June 30, 2007, there were no open repurchase agreements. FUTURES CONTRACTS. The Fund may engage in futures contracts for the purpose of hedging against changes in the value of its portfolio securities and in the value of securities it intends to purchase. Upon entering into a futures contract, the Fund is required to deposit with the broker an amount of cash or cash equivalents equal to a certain percentage of the contract amount. This is known as the "initial margin". Subsequent payments ("variation margin") are made or received by the Fund each day, depending on the daily fluctuations in the value of the contract, which are included in unrealized appreciation/depreciation on investments and futures contracts. The Fund recognizes a realized gain or loss when the contract is closed. There are several risks in connection with the use of futures contracts as a hedging instrument. The change in value of futures contracts primarily corresponds with the value of their underlying instruments, which may not correlate with the change in value of the hedged investments. In addition, there is the risk that the Fund may not be able to enter into a closing transaction because of an illiquid secondary market. At June 30, 2007, there were no open futures contracts. SECURITIES SOLD SHORT. The Fund may enter into short sale transactions. Short selling involves selling securities that may or may not be owned and, at times, borrowing the same securities for delivery to the purchaser, with an obligation to replace such borrowed securities at a later date. The proceeds received from short sales are recorded as liabilities and the Fund records an unrealized gain or loss to the extent of the difference between the proceeds received and the value of an open short position on the day of determination. The Fund records a realized gain or loss when the short position is closed out. By entering into a short sale, the Fund bears the market risk of an unfavorable change in the price of the security sold short. Dividends on short sales are recorded as an expense by the Fund on the ex-dividend date and interest expense is recorded on the accrual basis. The Fund did not hold any short positions as of June 30, 2007. 11 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ FORWARD FOREIGN EXCHANGE CONTRACTS. The Fund may engage in forward foreign exchange contracts for hedging a specific transaction with respect to either the currency in which the transaction is denominated or another currency as deemed appropriate by the Adviser. Forward foreign exchange contracts are valued at the forward rate and are marked-to-market daily. The change in market value is included in unrealized appreciation/depreciation on investments and foreign currency translations. When the contract is closed, the Fund records a realized gain or loss equal to the difference between the value of the contract at the time it was opened and the value at the time it was closed. The use of forward foreign exchange contracts does not eliminate fluctuations in the underlying prices of the Fund's portfolio securities, but it does establish a rate of exchange that can be achieved in the future. Although forward foreign exchange contracts limit the risk of loss due to a decline in the value of the hedged currency, they also limit any potential gain that might result should the value of the currency increase. In addition, the Fund could be exposed to risks if the counterparties to the contracts are unable to meet the terms of their contracts. At June 30, 2007, there were no open forward foreign exchange contracts. FOREIGN CURRENCY TRANSLATIONS. The books and records of the Fund are maintained in U.S. dollars. Foreign currencies, investments, and other assets and liabilities are translated into U.S. dollars at the current exchange rates. Purchases and sales of investment securities, income, and expenses are translated at the exchange rate prevailing on the respective dates of such transactions. Unrealized gains and losses that result from changes in foreign exchange rates and/or changes in market prices of securities have been included in unrealized appreciation/depreciation on investments and foreign currency translations. Net realized foreign currency gains and losses resulting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions, and the difference between the amounts of interest and dividends recorded on the books of the Fund and the amounts actually received. The portion of foreign currency gains and losses related to fluctuation in exchange rates between the initial trade date and subsequent sale trade date is included in realized gain/(loss) on investments. FOREIGN SECURITIES. The Fund may directly purchase securities of foreign issuers. Investing in securities of foreign issuers involves special risks not typically associated with investing in securities of U.S. issuers. The risks include possible revaluation of currencies, the ability to repatriate funds, less complete financial information about companies, and possible future adverse political and economic developments. Moreover, securities of many foreign issuers and their markets may be less liquid and their prices more volatile than those of securities of comparable U.S. issuers. FOREIGN TAXES. The Fund may be subject to foreign taxes on income, gains on investments, or currency repatriation, a portion of which may be recoverable. The Fund will accrue such taxes and recoveries as applicable, based upon its current interpretation of tax rules and regulations that exist in the markets in which it invests. RESTRICTED AND ILLIQUID SECURITIES. The Fund may invest up to 15% of its net assets in securities for which the markets are illiquid. Illiquid securities include securities the disposition of which is subject to substantial legal or contractual restrictions. The sale of illiquid securities often requires more time and results in higher brokerage charges or dealer discounts and other selling expenses than does the sale of securities eligible for trading on national securities exchanges or in the over-the-counter markets. Restricted securities may sell at a price lower than similar securities that are not subject to restrictions on resale. Securities freely saleable among qualified institutional investors under special rules adopted by the SEC may be treated as liquid if they satisfy liquidity 12 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ standards established by the Board. The continued liquidity of such securities is not as well assured as that of publicly traded securities, and accordingly the Board will monitor their liquidity. CONCENTRATION RISKS. The Fund may invest a high percentage of its assets in specific sectors of the market in order to achieve a potentially greater investment return. As a result, the Fund may be more susceptible to economic, political, and regulatory developments in a particular sector of the market, positive or negative, and may experience increased volatility to the Fund's NAV and a magnified effect in its total return. SECURITIES TRANSACTIONS AND INVESTMENT INCOME. Securities transactions are accounted for on the trade date with realized gain or loss on investments determined by using the identified cost method. Interest income (including amortization of premium and accretion of discount) is recorded on the accrual basis. Premiums and discounts on debt securities are amortized using the effective yield to maturity method. Dividend income is recorded on the ex-dividend date except for certain dividends which are recorded as soon as the Fund is informed of the dividend. DETERMINATION OF NET ASSET VALUE AND CALCULATION OF EXPENSES. Certain administrative expenses are common to, and allocated among, various affiliated funds. Such allocations are made on the basis of each Fund's average net assets or other criteria directly affecting the expenses as determined by the Adviser pursuant to procedures established by the Board. In calculating the NAV per share of each class, investment income, realized and unrealized gains and losses, redemption fees, and expenses other than class specific expenses are allocated daily to each class of shares based upon the proportion of net assets of each class at the beginning of each day. Distribution expenses are borne solely by the class incurring the expense. CUSTODIAN FEE CREDITS AND INTEREST EXPENSE. When cash balances are maintained in the custody account, the Fund receives credits which are used to offset custodian fees. The gross expenses paid under the custody arrangement are included in custodian fees in the Statement of Operations with the corresponding expense offset, if any, shown as "custodian fee credits". When cash balances are overdrawn, the Fund is charged an overdraft fee equal to 2.00% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. DISTRIBUTIONS TO SHAREHOLDERS. Distributions to shareholders are recorded on the ex-dividend date. Distributions to shareholders are based on income and capital gains as determined in accordance with federal income tax regulations, which may differ from income and capital gains as determined under U.S. generally accepted accounting principles. These differences are primarily due to differing treatments of income and gains on various investment securities and foreign currency transactions held by the Fund, timing differences, and differing characterizations of distributions made by the Fund. Distributions from net investment income include net realized gains on foreign currency transactions. These book/tax differences are either temporary or permanent in nature. To the extent these differences are permanent, adjustments are made to the appropriate capital accounts in the period when the differences arise. These reclassifications have no impact on the NAV of the Fund. The tax character of distributions paid during the fiscal year ended December 31, 2006 was $1,304,591 of ordinary income. PROVISION FOR INCOME TAXES. The Fund intends to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). It is the policy of the 13 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ Fund to comply with the requirements of the Code applicable to regulated investment companies and to distribute substantially all of its net investment company taxable income and net capital gains. Therefore, no provision for federal income taxes is required. At December 31, 2006, the Fund had net capital loss carryforwards for federal income tax purposes of $38,567,402, which are available to reduce future required distributions of net capital gains to shareholders. $23,342,608 of the loss carryforward is available through 2010; $11,910,139 is available through 2011; and $3,314,655 is available through 2012. The following summarizes the tax cost of investments and related unrealized appreciation/(depreciation) at June 30, 2007: GROSS GROSS UNREALIZED UNREALIZED NET UNREALIZED COST APPRECIATION DEPRECIATION APPRECIATION ---- ------------ ------------ ------------- Investments ....... $204,160,153 $124,088,542 $(13,556,099) $110,532,443 In July 2006, the FASB issued Interpretation No. 48, "Accounting for Uncertainty in Income Taxes, an Interpretation of FASB Statement No. 109" ("the Interpretation"). The Interpretation established for all entities, including pass-through entities such as the Fund, a minimum threshold for financial statement recognition of the benefit of positions taken in filing tax returns (including whether an entity is taxable in a particular jurisdiction), and required certain expanded tax disclosures. The Interpretation was implemented by the Fund on June 29, 2007 and applied to all open tax years as of the effective date. Management has evaluated the application of the Interpretation to the Fund, and the adoption of the Interpretation had no impact on the amounts reported in the financial statements. 3. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS. The Fund has entered into an investment advisory agreement (the "Advisory Agreement") with the Adviser which provides that the Fund will pay the Adviser a fee, computed daily and paid monthly, at the annual rate of 1.00% of the value of its average daily net assets. In accordance with the Advisory Agreement, the Adviser provides a continuous investment program for the Fund's portfolio, oversees the administration of all aspects of the Fund's business and affairs, and pays the compensation of all Officers and Directors of the Fund who are affiliated persons of the Adviser. If total net assets of the Corporation are in excess of $100 million, the Corporation pays each Director that is not considered to be an affiliated person an annual retainer of $3,000 plus $500 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. If total net assets of the Corporation are below $100 million, the Corporation pays each Independent Director an annual retainer of $1,500 plus $250 for each Board meeting attended and they are reimbursed for any out of pocket expenses incurred in attending meetings. All Board committee members receive $500 per meeting attended. Directors who are directors or employees of the Adviser or an affiliated company receive no compensation or expense reimbursement from the Fund. 4. DISTRIBUTION PLAN. The Fund's Board has adopted a distribution plan (the "Plan") for each class of shares pursuant to Rule 12b-1 under the 1940 Act. Gabelli & Company, Inc. ("Gabelli & Company"), an affiliate of the Adviser, serves as distributor of the Fund. Under the Class AAA, Class A, Class B, and Class C Share Plans, payments are authorized to Gabelli & Company at annual rates of 0.25%, 0.25%, 1.00%, and 1.00%, respectively, of the average daily net assets of those classes, the annual limitations under each Plan. Such payments are accrued daily and paid monthly. 14 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ 5. PORTFOLIO SECURITIES. Purchases and proceeds from the sales of securities for the six months ended June 30, 2007, other than short-term and U.S. Government securities, aggregated $56,497,278 and $6,390,120, respectively. 6. TRANSACTIONS WITH AFFILIATES. During the six months ended June 30, 2007, the Fund paid brokerage commissions of $39,127 to Gabelli & Company. Additionally, Gabelli & Company informed the Fund that it received $8,256 from investors representing commissions (sales charges and underwriting fees) on sales and redemptions of Fund shares. The cost of calculating the Fund's NAV per share is a Fund expense pursuant to the Advisory Agreement between the Fund and the Adviser. During the six months ended June 30, 2007, the Fund paid or accrued $22,621 to the Adviser in connection with the cost of computing the Fund's NAV. 7. LINE OF CREDIT. Effective June 20, 2007, the Fund participates in an unsecured line of credit of up to $75,000,000 and may borrow up to 10% of its net assets from the custodian for temporary borrowing purposes. Prior to June 20, 2007, the line of credit was $25,000,000. Borrowings under this arrangement bear interest at 0.75% above the Federal Funds rate on outstanding balances. This amount, if any, would be shown as "interest expense" in the Statement of Operations. During the six months ended June 30, 2007, there were no borrowings under the line of credit. 8. CAPITAL STOCK TRANSACTIONS. The Fund currently offers four classes of shares - - Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares. Class AAA Shares are offered only to investors who acquire them directly from Gabelli & Company, or through selected broker/dealers, or the transfer agent without a sales charge. Class A Shares are subject to a maximum front-end sales charge of 5.75%. Class B Shares are subject to a contingent deferred sales charge ("CDSC") upon redemption within six years of purchase and automatically convert to Class A Shares approximately eight years after the original purchase. The applicable CDSC is equal to a declining percentage of the lesser of the NAV per share at the date of the original purchase or at the date of redemption, based on the length of time held. Class C Shares are subject to a 1.00% CDSC for one year after purchase. Class B Shares are available only through exchange of Class B Shares of other funds distributed by Gabelli & Company. The Board has approved Class I Shares which have not been offered publicly. The Fund imposes a redemption fee of 2.00% on Class AAA Shares, Class A Shares, Class B Shares, and Class C Shares that are redeemed or exchanged on or before the seventh day after the date of a purchase. The redemption fee is deducted from the proceeds otherwise payable to the redeeming shareholders and is retained by the Fund. The redemption fees retained by the Fund during the six months ended June 30, 2007 and the fiscal year ended December 31, 2006 amounted to $2,656 and $589, respectively. The redemption fee does not apply to redemptions of shares where (i) the shares were purchased through automatic reinvestment of dividends or other distributions, (ii) the redemption was initiated by the Fund, (iii) the shares were purchased through programs that collect the redemption fee at the program level and remit them to the Fund, or (iv) the shares were purchased through programs that the Adviser determines to have appropriate anti-short-term trading policies in place or as to which the Adviser has received assurances that look-through redemption fee procedures or effective anti-short-term trading policies and procedures are in place. 15 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND NOTES TO FINANCIAL STATEMENTS (CONTINUED) (UNAUDITED) ================================================================================ Transactions in shares of capital stock were as follows: SIX MONTHS ENDED JUNE 30, 2007 YEAR ENDED (UNAUDITED) DECEMBER 31, 2006 -------------------------- ----------------------------- SHARES AMOUNT SHARES AMOUNT -------- ----------- ---------- ------------ CLASS AAA CLASS AAA --------------------------- ----------------------------- Shares sold ......................................... 3,293,205 $ 79,522,420 1,918,009 $ 37,710,107 Shares issued upon reinvestment of distributions .... -- -- 55,184 1,236,136 Shares redeemed ..................................... (940,495) (22,340,926) (3,033,740) (59,259,859) --------- ------------ ---------- ------------ Net increase (decrease) ........................... 2,352,710 $ 57,181,494 (1,060,547) $(20,313,616) ========= ============ ========== ============ CLASS A CLASS A --------------------------- ----------------------------- Shares sold ......................................... 104,066 $ 2,540,572 22,898 $ 474,817 Shares issued upon reinvestment of distributions .... -- -- 303 6,781 Shares redeemed ..................................... (20,420) (475,101) (13,041) (243,760) --------- ------------ ---------- ------------ Net increase ...................................... 83,646 $ 2,065,471 10,160 $ 237,838 ========= ============ ========== ============ CLASS B CLASS B --------------------------- ----------------------------- Shares redeemed ..................................... (1,565) $ (37,810) (11,513) $ (210,652) --------- ------------ ---------- ------------ Net decrease ...................................... (1,565) $ (37,810) (11,513) $ (210,652) ========= ============ ========== ============ CLASS C CLASS C --------------------------- ----------------------------- Shares sold ......................................... 140,940 $ 3,308,666 8,244 $ 162,900 Shares issued upon reinvestment of distributions .... -- -- 32 691 Shares redeemed ..................................... (3,223) (76,706) (3,583) (69,423) --------- ------------ ---------- ------------ Net increase ...................................... 137,717 $ 3,231,960 4,693 $ 94,168 ========= ============ ========== ============ 9. INDEMNIFICATIONS. The Fund enters into contracts that contain a variety of indemnifications. The Fund's maximum exposure under these arrangements is unknown. However, the Fund has not had prior claims or losses pursuant to these contracts and expects the risk of loss to be remote. 10. OTHER MATTERS. The Adviser and/or affiliates received subpoenas from the Attorney General of the State of New York and the SEC requesting information on mutual fund share trading practices involving certain funds managed by the Adviser. GAMCO Investors, Inc. ("GAMCO"), the Adviser's parent company, responded to these requests for documents and testimony. In June 2006, GAMCO began discussions with the SEC regarding a possible resolution of their inquiry. In February 2007, the Adviser made an offer of settlement to the staff of the SEC for communication to the Commission for its consideration to resolve this matter. This offer of settlement is subject to agreement regarding the specific language of the SEC's administrative order and other settlement documents. On a separate matter, in September 2005, the Adviser was informed by the staff of the SEC that the staff may recommend to the Commission that an administrative remedy and a monetary penalty be sought from the Adviser in connection with the actions of two of seven closed-end funds managed by the Adviser relating to Section 19(a) and Rule 19a-1 of the 1940 Act. These provisions require registered investment companies to provide written statements to shareholders when a dividend is made from a source other than net investment income. While the two closed-end funds sent annual statements and provided other materials containing this information, the funds did not send written statements to shareholders with each distribution in 2002 and 2003. The Adviser believes that all of the funds are now in compliance. The Adviser believes that these matters would have no effect on the Fund or any material adverse effect on the Adviser or its ability to manage the Fund. 16 THE GAMCO GLOBAL TELECOMMUNICATIONS FUND FINANCIAL HIGHLIGHTS ================================================================================ Selected data for a share of capital stock outstanding throughout each period: INCOME FROM INVESTMENT OPERATIONS DISTRIBUTIONS -------------------------------------- --------------------------- Net Net Asset Net Realized and Total Period Value, Investment Unrealized from Net Ended Beginning Income Gain (Loss) on Investment Investment Total Redemption December 31, of Period (Loss)(a) Investments Operations Income Distributions Fees(a) - ------------ --------- ---------- ------------- ---------- ---------- ------------- ---------- CLASS AAA 2007(c) $22.46 $ 0.20 $ 2.96 $ 3.16 -- -- $0.00(d) 2006 17.53 0.12 4.95 5.07 $(0.14) $(0.14) 0.00(d) 2005 17.23 0.16 0.33 0.49 (0.19) (0.19) 0.00(d) 2004 14.03 0.07 3.21 3.28 (0.08) (0.08) 0.00(d) 2003 9.83 (0.04) 4.24 4.20 -- -- 0.00(d) 2002 13.96 (0.01) (4.12) (4.13) -- -- -- CLASS A 2007(c) $22.43 $ 0.21 $ 2.96 $ 3.17 -- -- $0.00(d) 2006 17.51 0.12 4.95 5.07 $(0.15) $(0.15) 0.00(d) 2005 17.22 0.14 0.35 0.49 (0.20) (0.20) 0.00(d) 2004 14.03 0.08 3.19 3.27 (0.08) (0.08) 0.00(d) 2003 9.83 (0.04) 4.24 4.20 -- -- 0.00(d) 2002 13.95 (0.00)(d) (4.12) (4.12) -- -- -- CLASS B 2007(c) $21.90 $ 0.10 $ 2.88 $ 2.98 -- -- $0.00(d) 2006 17.11 (0.03) 4.82 4.79 -- -- 0.00(d) 2005 16.77 0.01 0.33 0.34 -- -- 0.00(d) 2004 13.69 (0.04) 3.12 3.08 -- -- 0.00(d) 2003 9.67 (0.13) 4.15 4.02 -- -- 0.00(d) 2002 13.83 (0.08) (4.08) (4.16) -- -- -- CLASS C 2007(c) $21.76 $ 0.13 $ 2.82 $ 2.95 -- -- $0.00(d) 2006 17.03 0.00(d) 4.77 4.77 $(0.04) $(0.04) 0.00(d) 2005 16.71 0.04 0.29 0.33 (0.01) (0.01) 0.00(d) 2004 13.68 (0.06) 3.14 3.08 (0.05) (0.05) 0.00(d) 2003 9.66 (0.16) 4.18 4.02 -- -- 0.00(d) 2002 13.82 (0.08) (4.08) (4.16) -- -- -- RATIOS TO AVERAGE NET ASSETS/SUPPLEMENTAL DATA ------------------------------------------------- Net Asset Net Assets Net Period Value, End of Investment Portfolio Ended End of Total Period Income Operating Turnover December 31, Period Return+ (in 000's) (Loss) Expenses(b) Rate - ------------ -------- ------- ---------- --------- ------------ -------- CLASS AAA 2007(c) $25.62 14.1% $304,769 1.69%(e) 1.49%(e) 3% 2006 22.46 28.9 214,436 0.63 1.56 7 2005 17.53 2.8 185,870 0.92 1.59 4 2004 17.23 23.4 209,043 0.49 1.62 15 2003 14.03 42.7 185,719 (0.38) 1.62 11 2002 9.83 (29.6) 139,455 (0.05) 1.66 8 CLASS A 2007(c) $25.60 14.1% $ 3,476 1.70%(e) 1.49%(e) 3% 2006 22.43 29.0 1,170 0.64 1.56 7 2005 17.51 2.8 735 0.83 1.59 4 2004 17.22 23.3 598 0.52 1.62 15 2003 14.03 42.7 421 (0.38) 1.62 11 2002 9.83 (29.5) 372 (0.05) 1.66 8 CLASS B 2007(c) $24.88 13.6% $ 292 0.87%(e) 2.24%(e) 3% 2006 21.90 28.0 291 (0.17) 2.31 7 2005 17.11 2.0 425 0.09 2.33 4 2004 16.77 22.5 855 (0.25) 2.37 15 2003 13.69 41.6 817 (1.13) 2.37 11 2002 9.67 (30.1) 610 (0.80) 2.41 8 CLASS C 2007(c) $24.71 13.6% $ 3,802 1.12%(e) 2.24%(e) 3% 2006 21.76 28.0 351 (0.02) 2.31 7 2005 17.03 2.0 195 0.26 2.34 4 2004 16.71 22.5 249 (0.44) 2.37 15 2003 13.68 41.6 94 (1.13) 2.37 11 2002 9.66 (30.1) 252 (0.80) 2.41 8 - ------------ + Total return represents aggregate total return of a hypothetical $1,000 investment at the beginning of the period and sold at the end of the period including reinvestment of dividends and does not reflect applicable sales charges. Total return for a period of less than one year is not annualized. (a) Per share amounts have been calculated using the average shares outstanding method. (b) The Fund incurred interest expense during the fiscal years ended December 31, 2005, 2004, 2003, and 2002. If interest expense had not been incurred, the ratio of operating expenses to average net assets would have been 1.58%, 1.61%, 1.61%, and 1.64% (Class AAA), 1.59%, 1.61%, 1.61%, and 1.64% (Class A), 2.33%, 2.36%, 2.36%, and 2.39% (Class B), and 2.34%, 2.36%, 2.36%, and 2.39% (Class C), respectively. For the six months ended June 30, 2007 and the fiscal year ended December 31, 2006, interest expense was minimal. (c) For the period ended June 30, 2007, unaudited. (d) Amount represents less than $0.005 per share. (e) Annualized. See accompanying notes to financial statements. 17 - -------------------------------------------------------------------------------- GABELLI/GAMCO FUNDS AND YOUR PERSONAL PRIVACY ================================================================================ WHO ARE WE? The Gabelli/GAMCO Funds are investment companies registered with the Securities and Exchange Commission under the Investment Company Act of 1940. We are managed by Gabelli Funds, LLC and Gabelli Advisers, Inc., which are affiliated with GAMCO Investors, Inc. GAMCO Investors, Inc. is a publicly held company that has subsidiaries that provide investment advisory or brokerage services for a variety of clients. WHAT KIND OF NON-PUBLIC INFORMATION DO WE COLLECT ABOUT YOU IF YOU BECOME A SHAREHOLDER? If you apply to open an account directly with us, you will be giving us some non-public information about yourself. The non-public information we collect about you is: o INFORMATION YOU GIVE US ON YOUR APPLICATION FORM. This could include your name, address, telephone number, social security number, bank account number, and other information. o INFORMATION ABOUT YOUR TRANSACTIONS WITH US, ANY TRANSACTIONS WITH OUR AFFILIATES, AND TRANSACTIONS WITH THE ENTITIES WE HIRE TO PROVIDE SERVICES TO YOU. This would include information about the shares that you buy or redeem. If we hire someone else to provide services--like a transfer agent--we will also have information about the transactions that you conduct through them. WHAT INFORMATION DO WE DISCLOSE AND TO WHOM DO WE DISCLOSE IT? We do not disclose any non-public personal information about our customers or former customers to anyone other than our affiliates, our service providers who need to know such information, and as otherwise permitted by law. If you want to find out what the law permits, you can read the privacy rules adopted by the Securities and Exchange Commission. They are in volume 17 of the Code of Federal Regulations, Part 248. The Commission often posts information about its regulations on its web site, www.sec.gov. WHAT DO WE DO TO PROTECT YOUR PERSONAL INFORMATION? We restrict access to non-public personal information about you to the people who need to know that information in order to provide services to you or the Fund and to ensure that we are complying with the laws governing the securities business. We maintain physical, electronic, and procedural safeguards to keep your personal information confidential. - -------------------------------------------------------------------------------- GABELLI FAMILY OF FUNDS VALUE _______________________________________ GABELLI ASSET FUND Seeks to invest primarily in a diversified portfolio of common stocks selling at significant discounts to their private market value. The Fund's primary objective is growth of capital. (MULTICLASS) PORTFOLIO MANAGER: MARIO J. GABELLI, CFA GABELLI BLUE CHIP VALUE FUND Seeks long term growth of capital through investment primarily in the common stocks of established companies which are temporarily out of favor. The fund's objective is to identify a catalyst or sequence of events that will return the company to a higher value. (MULTICLASS) PORTFOLIO MANAGER: BARBARA MARCIN, CFA GAMCO WESTWOOD EQUITY FUND Seeks to invest primarily in the common stock of well seasoned companies that have recently reported positive earnings surprises and are trading below Westwood's proprietary growth rate estimates. The Fund's primary objective is capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: SUSAN M. BYRNE FOCUSED VALUE _______________________________ GABELLI VALUE FUND Seeks to invest in securities of companies believed to be undervalued. The Fund's primary objective is long-term capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: MARIO J. GABELLI, CFA SMALL CAP VALUE _____________________________ GABELLI SMALL CAP FUND Seeks to invest primarily in common stock of smaller companies (market capitalizations at the time of investment of $2 billion or less) believed to have rapid revenue and earnings growth potential. The Fund's primary objective is capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: MARIO J. GABELLI, CFA GAMCO WESTWOOD SMALLCAP EQUITY FUND Seeks to invest primarily in smaller capitalization equity securities - market caps of $2.5 billion or less. The Fund's primary objective is long-term capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: ELIZABETH M. LILLY, CFA GABELLI WOODLAND SMALL CAP VALUE FUND Seeks to invest primarily in the common stocks of smaller companies (market capitalizations generally less than $3.0 billion) believed to be undervalued with shareholder oriented management teams that are employing strategies to grow the company's value. The Fund's primary objective is capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: ELIZABETH M. LILLY, CFA GROWTH ______________________________________ GAMCO GROWTH FUND Seeks to invest primarily in large cap stocks believed to have favorable, yet undervalued, prospects for earnings growth. The Fund's primary objective is capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: HOWARD F. WARD, CFA GAMCO INTERNATIONAL GROWTH FUND Seeks to invest in the equity securities of foreign issuers with long-term capital appreciation potential. The Fund offers investors global diversification. (MULTICLASS) PORTFOLIO MANAGER: CAESAR BRYAN AGGRESSIVE GROWTH ___________________________ GAMCO GLOBAL GROWTH FUND Seeks capital appreciation through a disciplined investment program focusing on the globalization and interactivity of the world's marketplace. The Fund invests in companies at the forefront of accelerated growth. The Fund's primary objective is capital appreciation. (MULTICLASS) TEAM MANAGED MICRO-CAP ___________________________________ GAMCO WESTWOOD MIGHTY MITES(SM) FUND Seeks to invest in micro-cap companies that have market capitalizations of $300 million or less. The Fund's primary objective is long-term capital appreciation. (MULTICLASS) TEAM MANAGED EQUITY INCOME _______________________________ GABELLI EQUITY INCOME FUND Seeks to invest primarily in equity securities with above average market yields. The Fund pays monthly dividends and seeks a high level of total return with an emphasis on income. (MULTICLASS) PORTFOLIO MANAGER: MARIO J. GABELLI, CFA GAMCO WESTWOOD BALANCED FUND Seeks to invest in a balanced and diversified portfolio of stocks and bonds. The Fund's primary objective is both capital appreciation and current income. (MULTICLASS) CO-PORTFOLIO MANAGERS: SUSAN M. BYRNE MARK FREEMAN, CFA GAMCO WESTWOOD INCOME FUND Seeks to provide a high level of current income as well as long-term capital appreciation by investing in income producing equity and fixed income securities. (MULTICLASS) PORTFOLIO MANAGER: BARBARA MARCIN, CFA SPECIALTY EQUITY ____________________________ GAMCO GLOBAL CONVERTIBLE SECURITIES FUND Seeks to invest principally in bonds and preferred stocks which are convertible into common stock of foreign and domestic companies. The Fund's primary objective is total return through a combination of current income and capital appreciation. (MULTICLASS) TEAM MANAGED GAMCO GLOBAL OPPORTUNITY FUND Seeks to invest in common stock of companies which have rapid growth in revenues and earnings and potential for above average capital appreciation or are undervalued. The Fund's primary objective is capital appreciation. (MULTICLASS) TEAM MANAGED GABELLI SRI FUND Seeks to invest in common and preferred stocks of companies that meet the Fund's guidelines for social responsibility at the time of investment, looking to avoid companies in tobacco, alcohol, and gaming, defense/weapons contractors, and manufacturers of abortifacients. The Fund's primary objective is capital appreciation. (MULTICLASS) PORTFOLIO MANAGER: CHRISTOPHER C. DESMARAIS SECTOR ______________________________________ GAMCO GLOBAL TELECOMMUNICATIONS FUND Seeks to invest in telecommunications companies throughout the world - targeting undervalued companies with strong earnings and cash flow dynamics. The Fund's primary objective is capital appreciation. (MULTICLASS) TEAM MANAGED GAMCO GOLD FUND Seeks to invest in a global portfolio of equity securities of gold mining and related companies. The Fund's objective is long-term capital appreciation. Investment in gold stocks is considered speculative and is affected by a variety of worldwide economic, financial, and political factors. (MULTICLASS) PORTFOLIO MANAGER: CAESAR BRYAN GABELLI UTILITIES FUND Seeks to provide a high level of total return through a combination of capital appreciation and current income. (MULTICLASS) TEAM MANAGED MERGER AND ARBITRAGE ________________________ GABELLI ABC FUND Seeks to invest in securities with attractive opportunities for appreciation or investment income. The Fund's primary objective is total return in various market conditions without excessive risk of capital loss. (NO-LOAD) PORTFOLIO MANAGER: MARIO J. GABELLI, CFA CONTRARIAN __________________________________ GAMCO MATHERS FUND Seeks long-term capital appreciation in various market conditions without excessive risk of capital loss. (NO-LOAD) PORTFOLIO MANAGER: HENRY VAN DER EB, CFA COMSTOCK CAPITAL VALUE FUND Seeks capital appreciation and current income. The Fund may use either long or short positions to achieve its objective. (MULTICLASS) PORTFOLIO MANAGER: MARTIN WEINER, CFA COMSTOCK STRATEGY FUND The Fund emphasizes investments in debt securities, which maximize total return in light of credit risk, interest rate risk, and the risk associated with the length of maturity of debt instruments. (MULTICLASS) PORTFOLIO MANAGER: MARTIN WEINER, CFA FIXED INCOME ________________________________ GAMCO WESTWOOD INTERMEDIATE BOND FUND Seeks to invest in a diversified portfolio of bonds with various maturities. The Fund's primary objective is total return. (MULTICLASS) PORTFOLIO MANAGER: MARK FREEMAN, CFA CASH MANAGEMENT-MONEY MARKET ________________ GABELLI U.S. TREASURY MONEY MARKET FUND Seeks to invest exclusively in short-term U.S. Treasury securities. The Fund's primary objective is to provide high current income consistent with the preservation of principal and liquidity. (NO-LOAD) PORTFOLIO MANAGER: JUDITH A. RANERI AN INVESTMENT IN THE ABOVE MONEY MARKET FUND IS NEITHER INSURED NOR GUARANTEED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY GOVERNMENT AGENCY. ALTHOUGH THE FUND SEEKS TO PRESERVE THE VALUE OF YOUR INVESTMENT AT $1.00 PER SHARE, IT IS POSSIBLE TO LOSE MONEY BY INVESTING IN THE FUND. THE FUNDS MAY INVEST IN FOREIGN SECURITIES WHICH INVOLVE RISKS NOT ORDINARILY ASSOCIATED WITH INVESTMENTS IN DOMESTIC ISSUES, INCLUDING CURRENCY FLUCTUATION, ECONOMIC, AND POLITICAL RISKS. TO RECEIVE A PROSPECTUS, CALL 800-GABELLI (422-3554). INVESTORS SHOULD CAREFULLY CONSIDER THE INVESTMENT OBJECTIVES, RISKS, CHARGES, AND EXPENSES OF THE FUND BEFORE INVESTING. THE PROSPECTUS CONTAINS MORE INFORMATION ABOUT THIS AND OTHER MATTERS AND SHOULD BE READ CAREFULLY BEFORE INVESTING. GAMCO Global Series Funds, Inc. THE GAMCO GLOBAL TELECOMMUNICATIONS FUND One Corporate Center Rye, New York 10580-1422 800-GABELLI 800-422-3554 FAX: 914-921-5118 WEBSITE: WWW.GABELLI.COM E-MAIL: INFO@GABELLI.COM Net Asset Value per share available daily by calling 800-GABELLI after 6:00 P.M. BOARD OF DIRECTORS Mario J. Gabelli, CFA John D. Gabelli CHAIRMAN AND CHIEF SENIOR VICE PRESIDENT EXECUTIVE OFFICER GABELLI & COMPANY, INC. GAMCO INVESTORS, INC. E. Val Cerutti Werner J. Roeder, MD CHIEF EXECUTIVE OFFICER MEDICAL DIRECTOR CERUTTI CONSULTANTS, INC. LAWRENCE HOSPITAL Anthony J. Colavita Anthonie C. van Ekris ATTORNEY-AT-LAW CHAIRMAN ANTHONY J. COLAVITA, P.C. BALMAC INTERNATIONAL, INC. Arthur V. Ferrara Salvatore J. Zizza FORMER CHAIRMAN AND CHAIRMAN CHIEF EXECUTIVE OFFICER ZIZZA & CO., LTD. GUARDIAN LIFE INSURANCE COMPANY OF AMERICA OFFICERS Bruce N. Alpert James E. McKee PRESIDENT SECRETARY Agnes Mullady Peter D. Goldstein TREASURER CHIEF COMPLIANCE OFFICER DISTRIBUTOR Gabelli & Company, Inc. CUSTODIAN, TRANSFER AGENT, AND DIVIDEND AGENT State Street Bank and Trust Company LEGAL COUNSEL Skadden, Arps, Slate, Meagher & Flom LLP - -------------------------------------------------------------------------------- This report is submitted for the general information of the shareholders of The GAMCO Global Telecommunications Fund. It is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. - -------------------------------------------------------------------------------- GAB401Q207SR [GRAPHIC OMITTED] E P Gabelli Triangle P M MANAGEMENT S V CASH FLOW RESEARCH THE GAMCO GLOBAL TELECOMMUNICATIONS FUND SEMI-ANNUAL REPORT JUNE 30, 2007 ITEM 2. CODE OF ETHICS. Not applicable. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. Not applicable. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. Not applicable. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS. Not applicable. ITEM 6. SCHEDULE OF INVESTMENTS. Schedule of Investments in securities of unaffiliated issuers as of the close of the reporting period is included as part of the report to shareholders filed under Item 1 of this form. ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. Not applicable. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrant's Board of Directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 407(c)(2)(iv) of Regulation S-K (17 CFR 229.407) (as required by Item 22(b)(15) of Schedule 14A (17 CFR 240.14a-101)), or this Item. ITEM 11. CONTROLS AND PROCEDURES. (a) The registrant's principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the "1940 Act") (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph, based on their evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rules 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934, as amended (17 CFR 240.13a-15(b) or 240.15d-15(b)). (b) There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant's second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 12. EXHIBITS. (a)(1) Not applicable. (a)(2) Certifications pursuant to Rule 30a-2(a) under the 1940 Act and Section 302 of the Sarbanes-Oxley Act of 2002 are attached hereto. (a)(3) Not applicable. (b) Certifications pursuant to Rule 30a-2(b) under the 1940 Act and Section 906 of the Sarbanes-Oxley Act of 2002 are attached hereto. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (registrant) GAMCO Global Series Funds, Inc. -------------------------------------------------------------------- By (Signature and Title)* /s/ Bruce N. Alpert ------------------------------------------------------- Bruce N. Alpert, Principal Executive Officer Date August 31, 2007 ---------------------------------------------------------------------------- Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ Bruce N. Alpert ------------------------------------------------------- Bruce N. Alpert, Principal Executive Officer Date August 31, 2007 ---------------------------------------------------------------------------- By (Signature and Title)* /s/ Agnes Mullady ------------------------------------------------------- Agnes Mullady, Principal Financial Officer & Treasurer Date August 31, 2007 ---------------------------------------------------------------------------- * Print the name and title of each signing officer under his or her signature.