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 811-06351 Green Century Funds 114 State Street Suite 200 Boston, MA 02109 (Address of principal executive offices) Green Century Capital Management, Inc. 114 State Street Suite 200 Boston, MA 02109 (Name and address of agent for service) Registrant's telephone number, including area code: (617) 482-0800 Date of fiscal year end: July 31 Date of reporting period: January 31, 2007 Item 1. Reports to Stockholders The following is a copy of the report transmitted to shareholders pursuant to Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). SEMI-ANNUAL REPORT [LOGO] GREEN Green Century Balanced Fund CENTURY Green Century Equity Fund FUNDS January 31, 2007 An investment for your future.(R) 114 State Street, Boston, Massachusetts 02109 For information on the Green Century Funds(R), call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For share price and account information, call 1-800-221-5519, twenty-four hours a day. - -------------------------------------------------------------------------------- Dear Green Century Funds Shareholder: We are pleased to write you at such an exciting time in the history of the Green Century Funds (the "Funds"). This year, the Funds celebrate their 16/th/ anniversary and have implemented a series of important changes that Green Century Capital Management ("Green Century") believes will be positive for the Funds' shareholders. Green Century is proud of the legacy it is building of environmentally responsible investment vehicles and our efforts to improve corporate environmental performance. We appreciate this opportunity to share news from the past six months, including updates on Green Century's shareholder advocacy program, the wider public discussion of global warming, and an analysis of the Funds' investment performance. The Funds' shareholders voted to approve a number of changes proposed by the Board of Trustees over the past year and half to benefit shareholders of the Funds. Trillium Asset Management Corporation was appointed the portfolio manager of the Green Century Balanced Fund for its expertise in environmental and financial research and its strong shareholder advocacy program. The portfolio manager has developed a diverse but environmentally focused portfolio of multi-cap stocks and bonds that does not include fossil fuel production or refining, companies engaged in factory farming, and users of agricultural pesticides--an excellent fit with the Funds' environmentally conscious mission. Shareholders approved changes for the Green Century Equity Fund as well, involving a change in management structure, which enabled the Fund to maintain its investment objective of tracking the oldest and most well known environmentally and socially responsible index, the Domini 400 Social/SM/ Index (the "Index"). Green Century is proud to offer the only mutual fund based on this legendary Index. Finally, Green Century implemented a vote by the Board of Trustees to decrease the expenses of both Funds by over one-third. The administrative expenses for both Funds are now reduced so that the Balanced Fund's total annual expenses are limited to 1.38% (down from 2.39%), a 42% reduction, and the Equity Fund's total annual expenses are limited to 0.95% (down from 1.50%), a 37% reduction./1/ Green Century is commencing another year of vigorous shareholder advocacy. Targeting companies with significant potential to improve their corporate environmental behavior, Green Century continues to focus on the issues of wilderness preservation and biodiversity, clean air and energy, toxics and environmental health, pure water and safe food, chemical security, and political influence. We include improving political oversight because companies can wield tremendous political influence which can have significant environmental impact, but they are not required by law to disclose their political contributions. We are pleased that Monsanto/2/, Home Depot/2/, and American Electric Power/2 /have already agreed to our request to improve their disclosure and oversight of political contributions, which we consider to be a basic good business practice. We are pleased to be witnessing wider public discussion of global warming as domestic and international leaders gather research and begin to address the issue. Recent reports have galvanized this effort, including the United Nation's Intergovernmental Panel on Climate Change and the Stern Review on the Economics of Climate Change, written by Great Britain's Sir Nicholas Stern, a former Chief Economist of the World Bank. In the U.S., states are taking the lead with California's legislation to cap greenhouse gas emissions and Massachusetts' signing on to the Regional Greenhouse Gas Initiative to reduce carbon dioxide emissions in the northeastern and mid-Atlantic states. Individual citizens are hearing the message through popular culture and the media as well. Al Gore's movie, "An Inconvenient Truth," outlines changes to the environment and draws attention to the plight of our planet. Ultimately Mr. Gore's message is optimistic and we hope that Americans begin to understand what is at stake and act to lessen our collective impact. The Green Century Balanced Fund seeks capital growth and income from a diversified portfolio of stocks and bonds that meet Green Century's standards for corporate environmental performance. The portfolio manager of the Balanced Fund invests in companies that are in the business of solving environmental problems or that are committed to reducing their environmental impact. ---------------------------------------------------------------------------- AVERAGE ANNUAL TOTAL RETURN ---------------------------------------------------------------------------- Six One Five Ten Months Year Years Years ---------------------------------------------------------------------------- For the periods ended December 31, 2006: Green Century Balanced Fund 8.82% 7.75% 2.90% 7.85% Lipper Balanced Fund Index/3/ 9.14% 11.60% 6.51% 7.44% ---------------------------------------------------------------------------- For the periods ended January 31, 2007: Green Century Balanced Fund 10.48% 8.47% 3.72% 7.72% Lipper Balanced Fund Index/3/ 9.81% 10.17% 6.92% 7.22% ---------------------------------------------------------------------------- The performance data quoted represents past performance and is not a guarantee of future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information quoted. To obtain performance information as of the most recent month-end, call 1-800-93-GREEN. Performance includes the reinvestment of income dividends and capital gain distributions. Performance shown does not reflect the deduction of taxes that a shareholder might pay on Fund distributions or the redemption of Fund shares. The past six months have been kinder to environmentally conscious investors than the first half of 2006. During the six months ended January 31, 2007, the Balanced Fund's return of 10.48% outperformed the Lipper Balanced Fund Index, in part driven by overweighting of the technology and materials sectors and the lack of exposure to fossil fuel companies. In particular, the energy sector eased its momentum with the oversupply of oil and unseasonably warm temperatures for the first half of winter in late 2006. Given that many energy sector companies have significant negative environmental impacts, the Fund was therefore underweighted in this sector and benefited as a result. The Fund's investment grade, intermediate duration bond holdings continue to serve their purpose of providing asset diversification and seeking to moderate performance volatility. Representing 30.2% of net assets as of January 31, 2007, the Balanced Fund's fixed income securities have an average credit rating of Baa1/BBB+ (as rated by Standard & Poor's). 2 GREEN CENTURY BALANCED FUND INVESTMENTS BY INDUSTRY As a percentage of net assets, as of January 31, 2007 [CHART] Diversified Financials 11.8% Technology Hardware & Equipment 11.6% U.S. Government Agencies 8.7% Healthcare Equipment & Services 7.6% Insurance 6.7% Pharmaceuticals & Biotechnology 6.5% Capital Goods 5.7% Software & Services 5.3% Materials 4.9% Telecommunications Services 4.1% Food & Beverage 3.7% Transportation 3.7% Healthy Living 3.3% Cash Equivalents & Other Assets 3.1% Automobiles & Components 2.6% Banks 2.1% Media 2.0% Consumer Durables & Apparel 1.9% Retailing 1.8% Renewable Energy & Energy Efficiency 1.8% Commercial Services & Supplies 0.8% Consumer Services 0.3% As of January 31, 2007, 66.7% of the Balanced Fund's net assets were invested in stocks. The portfolio manager's asset allocation reflects its view that stocks should outperform bonds and cash during 2007. The portfolio manager believes that sustained economic growth with stable and lower interest rates could benefit equities in general and some of the Fund's more heavily weighted sectors, including information technology and financial services. The portfolio manager expects health care stocks, in which the Balanced Fund is typically overweighted, to be attractively valued and positioned with the potential for better returns. The Green Century Balanced Fund consistently includes stocks and bonds of environmentally responsible corporations of various sizes, including small, medium, and large companies. The value of the stocks held in the Balanced Fund will fluctuate in response to factors that may affect a single issuer, industry, or sector of the economy or may affect the market as a whole. Bonds are subject to a variety of risks including interest rate, credit, and inflation risk. The Green Century Equity Fund invests essentially all of its assets in the companies included in the Domini 400 Social/SM/ Index, which is comprised of 400 primarily large capitalization U.S. companies selected based on a comprehensive set of social and environmental criteria. The Equity Fund seeks to provide shareholders with a long-term total return that matches that of the Index. ------------------------------------------------------------------------ AVERAGE ANNUAL TOTAL RETURN ------------------------------------------------------------------------ Six One Five Ten Months Year Years Years ------------------------------------------------------------------------ For the periods ended December 31, 2006: Green Century Equity Fund 12.76% 12.08% 4.28% 7.06% S&P 500(R) Index/4/ 12.74% 15.80% 6.20% 8.42% ------------------------------------------------------------------------ For the periods ended January 31, 2007: Green Century Equity Fund 14.93% 11.95% 4.77% 6.51% S&P 500(R) Index/4/ 13.75% 14.51% 6.82% 7.92% ------------------------------------------------------------------------ The performance data quoted represents past performance and is not a guarantee of future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance information quoted. To obtain performance information as of the most recent month-end, call 1-800-93-GREEN. Performance includes the reinvestment of income dividends and capital gain distributions. Performance shown does not reflect the deduction of taxes that a shareholder might pay on Fund distributions or the redemption of Fund shares. 3 The Green Century Equity Fund outperformed the S&P 500(R) Index for the six month periods ended December 31, 2006 and January 31, 2007. As of January 31, 2007, the Equity Fund's return for the period was 14.93%, while the S&P 500(R) Index was up 13.75%. The Fund benefited from a surge in the U.S. stock market that started during the second half of 2006 and continued into January of 2007. A number of positive factors contributed to the market's gain during this period including an expanding global economy, subdued inflation, stabilized global interest rates, low unemployment and robust corporate profits. These positive factors offset the negative effect of the correction in the housing market and the volatility in energy prices, surprising many economists. Most recently, the performance of the Fund in comparison to the S&P 500(R) Index was helped by underweighting in the energy sector as oil prices declined sharply. In addition, overweighting of the telecommunications sector boosted relative performance of the Fund, in particular with the merger of BellSouth/2/ and AT&T/2/. Other companies contributing most to performance were JPMorgan Chase/2/ and Verizon Communications/2/. Conversely, overweighting of air freight transportation stocks detracted from the Equity Fund's performance relative to the S&P 500(R) Index as these stocks experienced a correction near the end of the period. Also hurting relative performance were certain drug stocks that were up sharply but were excluded from the portfolio due to the comprehensive social and environmental screens. Other companies that most hurt the performance of the Fund were United Parcel Service/2/, Dell/2/, and Apple/2/. The Equity Fund, like other mutual funds invested primarily in stocks, carries the risk of investing in the stock market. The large companies in which the Equity Fund's portfolio is invested may perform worse than the stock market as a whole. GREEN CENTURY EQUITY FUND INVESTMENTS BY INDUSTRY As a percentage of net assets, as of January 31, 2007 [CHART] Banks 10.0% Technology Hardware & Equipment 8.9% Diversified Financials 8.3% Pharmaceuticals & Biotechnology 8.0% Software & Services 6.9% Telecommunications Services 6.3% Retailing 5.5% Healthcare Equipment & Services 5.5% Household & Personal Products 4.7% Food & Beverage 4.5% Semiconductors 3.9% Media 3.7% Insurance 3.4% Capital Goods 3.3% Energy 3.2% Transportation 2.5% Food & Staples Retailing 2.5% Consumer Durables & Apparel 1.9% Materials 1.8% Consumer Services 1.5% Utilities 1.0% Real Estate 0.8% Commercial Services & Supplies 0.8% Renewable Energy & Energy Efficiency 0.3% Automobiles & Components 0.3% Healthy Living 0.2% Cash Equivalents & Other Assets 0.3% 4 In closing, Green Century appreciates your continued support of its work in protecting the environment and seeking to build a sustainable economy, which is only possible with the help of shareholders like you. Respectfully yours, Green Century Capital Management, Inc. The Green Century Funds' proxy voting guidelines and a record of the Funds' proxy votes for the year ended June 30, 2006 are available without charge, upon request, (i) at www.greencentury.com, (ii) by calling 1-800-93-GREEN, (iii) sending an e-mail to info@greencentury.com, and (iv) on the Securities and Exchange Commission's website at www.sec.gov. The Green Century Funds will file their complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. The Green Century Funds' Forms N-Q will be available on the EDGAR database on the SEC's website at www.sec.gov. These forms may also be reviewed and copied at the SEC's Public Reference Room in Washington D.C. Information about the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The information on Form N-Q may also be obtained by calling 1-800-93-GREEN, or by e-mailing a request to info@greencentury.com. /1/ Green Century, the investment advisor and administrator for each Fund, pays the operating expenses of the Funds (excluding interest, taxes, brokerage costs and other capital expenses and any extraordinary expenses). For this and other services, each Fund pays Green Century an Administrative Fee and an Advisory Fee at rates such that the Equity Fund's total annual expenses are limited to 0.95% of the Equity Fund's average net assets and the Balanced Fund's total annual expenses are limited to 1.38% of the Balanced Fund's average net assets. /2/ As of January 31, 2007, neither of the Green Century Funds was invested in Monsanto or American Electric Power. As of January 31, 2007, Home Depot comprised 1.27%, AT&T comprised 3.60%, JPMorgan Chase comprised 2.70%, Verizon Communications comprised 1.72%, United Parcel Service comprised 1.19%, Dell comprised 0.84%, and Apple comprised 1.11% of the Green Century Equity Fund. As of January 31, 2007 AT&T comprised 2.01%, JPMorgan Chase comprised 3.86%, United Parcel Service comprised 1.37%, and Apple comprised 0.46% of the Green Century Balanced Fund. Portfolio composition will change due to ongoing management of the Funds. References to specific investments should not be construed as a recommendation of the securities by the Funds, their advisor, or their distributor. /3/ Lipper Analytical Services, Inc. ("Lipper") is a respected mutual fund reporting service. The Lipper Balanced Fund Index includes the 30 largest funds whose primary objective is to conserve principal by maintaining at all times a balanced portfolio of both stocks and bonds. Typically, the stock/bond ratio ranges around 60%/40%. /4/ The S&P 500(R) Index is an unmanaged index of 500 selected common stocks, most of which are listed on the New York Stock Exchange. The S&P 500(R) Index is heavily weighted toward stocks with large market capitalization and represents approximately two-thirds of the total market value of all domestic stocks. It is not possible to invest directly in the S&P 500(R) Index. This material must be preceded or accompanied by a current prospectus. Distributor: UMB Distribution Services, LLC, 3/07 5 GREEN CENTURY FUNDS EXPENSE EXAMPLE As a shareholder of the Green Century Funds (the "Funds"), you incur two types of costs: (1) transaction costs, including redemption fees on certain redemptions; and (2) ongoing costs, including management fees; distribution (12b-1) fees (for the Green Century Balanced Fund only, discontinued on November 28, 2006); and other Fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the Funds and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period from August 1, 2006 to January 31, 2007 (the "period"). Actual Expenses. The first line of the table below provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 equals 8.6), then multiply the result by the number in the first line under the heading entitled "Expenses Paid During the Period" to estimate the expenses you paid on your account during the period. Hypothetical Example for Comparison Purposes. The second line of the table below provides information about hypothetical account values and hypothetical expenses based on the Funds' actual expense ratios and an assumed rate of return of 5% per year before expenses, which is not the actual return of either of the Funds. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the Funds and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the 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 redemption fees on shares held for 60 days or less. Therefore, the second line of the table is useful in comparing the ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs could have been higher. BALANCED FUND EQUITY FUND -------------------------------------- -------------------------------------- BEGINNING ENDING EXPENSES BEGINNING ENDING EXPENSES ACCOUNT ACCOUNT PAID DURING ACCOUNT ACCOUNT PAID DURING VALUE VALUE THE PERIOD ENDED VALUE VALUE THE PERIOD ENDED AUGUST 1, JANUARY 31, JANUARY 31, AUGUST 1, JANUARY 31, JANUARY 31, 2006 2007 2007/1,2/ 2006 2007 2007/1,3/ Actual Expenses...... $1,000.00 $1,104.80 $7.99 $1,000.00 $1,143.90 $5.16 Hypothetical Example, assuming a 5% return before expenses..... 1,000.00 1,017.40 7.66 1,000.00 1,020.19 4.86 /1/ Expenses are equal to the Funds' annualized expense ratios (1.51% for the Balanced Fund and 0.95% for the Equity Fund), multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). /2/ Effective August 25, 2006, total expenses of the Balanced Fund were reduced to 1.38%. If this change had been in effect throughout the period, the actual expenses would have been $7.32 and the hypothetical expenses would have been $7.02. /3/ For the period August 1, 2006 through November 27, 2006, the example reflects the expenses of both the Domini Social Equity Trust and the Equity Fund. 6 GREEN CENTURY FUNDS FINANCIAL STATEMENTS GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS January 31, 2007 (unaudited) COMMON STOCKS -- 66.7% SHARES VALUE Diversified Financials -- 9.1% American Express Company........... 10,880 $ 633,434 Bank of America Corporation........ 19,970 1,050,023 CIT Group, Inc..................... 18,015 1,062,164 Citigroup, Inc..................... 18,980 1,046,367 JPMorgan Chase & Company........... 21,820 1,111,293 ------------ 4,903,281 ------------ Technology Hardware & Equipment -- 7.8% Apple Computer, Inc. (b)........... 2,885 247,331 Cisco Systems, Inc. (b)............ 52,090 1,385,073 Hewlett-Packard Company............ 28,700 1,242,136 IBM Corporation.................... 11,400 1,130,310 NAM TAI Electronics, Inc. (c)...... 12,550 169,676 ------------ 4,174,526 ------------ Insurance -- 6.7% Ambac Financial Group, Inc......... 11,010 969,981 American International Group....... 5,000 342,250 Chubb Corporation.................. 18,670 971,587 Philadelphia Consolidated Holding Corporation (b)................... 19,525 879,796 The Progressive Corporation........ 19,075 442,349 ------------ 3,605,963 ------------ Pharmaceuticals & Biotechnology -- 6.5% Amgen, Inc. (b).................... 14,250 1,002,772 Johnson & Johnson.................. 21,590 1,442,212 Novo Nordisk A/S American Depository Receipt (c)............ 6,915 593,514 Teva Pharmaceutical Industries Ltd. American Depository Receipt (c)... 13,135 461,039 ------------ 3,499,537 ------------ Capital Goods -- 5.7% 3M Company......................... 11,945 887,514 Emerson Electric Company........... 28,910 1,300,083 Illinois Tool Works, Inc........... 17,590 896,914 ------------ 3,084,511 ------------ Materials -- 4.9% Air Products & Chemicals, Inc...... 14,000 1,045,240 SHARES VALUE Materials -- (continued) Cemex S.A. de C.V. American Depository Receipt (b)(c)....... 11,800 $ 417,484 Sealed Air Corporation........... 17,560 1,157,204 ------------ 2,619,928 ------------ Software & Services -- 4.4% Google, Inc. (b)................. 1,580 792,054 Oracle Corporation (b)........... 66,760 1,145,602 Satyam Computer Services Ltd. American Depository Receipt (c). 18,000 419,040 ------------ 2,356,696 ------------ Healthcare Equipment & Services -- 4.3% Baxter International, Inc........ 19,000 943,540 Dentsply International, Inc...... 11,400 351,576 United Health Group, Inc......... 19,310 1,009,141 ------------ 2,304,257 ------------ Transportation -- 2.8% FedEx Corporation................ 7,120 786,048 United Parcel Service, Inc....... 10,200 737,256 ------------ 1,523,304 ------------ Media -- 2.0% McGraw-Hill Companies, Inc....... 16,310 1,094,075 ------------ Renewable Energy & Energy Efficiency -- 1.8% Itron, Inc. (b).................. 3,910 225,372 Johnson Controls, Inc............ 2,650 245,019 Ormat Technologies, Inc.......... 5,000 195,950 MEMC Electronic Materials, Inc. (b)........................ 6,400 335,360 ------------ 1,001,701 ------------ Retailing -- 1.8% The Men's Wearhouse, Inc......... 7,500 322,050 Staples, Inc..................... 26,010 668,977 ------------ 991,027 ------------ Automobiles & Components -- 1.7% Toyota Motor Corporation American Depository Receipt (c).......... 6,960 917,189 ------------ 7 GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS -- (continued) January 31, 2007 (unaudited) SHARES VALUE Healthy Living -- 1.4% United Natural Foods, Inc. (b)... 9,575 $ 316,358 Whole Foods Market, Inc.......... 9,470 409,009 ------------ 725,367 ------------ Food & Beverage -- 1.3% JM Smucker Company............... 14,480 687,655 ------------ Banks -- 1.2% Barclays PLC American Depository Receipt (c).......... 5,000 294,950 TCF Financial Corporation........ 14,500 368,010 ------------ 662,960 ------------ Telecommunication Services -- 1.2% BT Group PLC American Depository Receipt (c).......... 10,500 640,920 ------------ Consumer Durables & Apparel -- 1.0% Liz Claiborne, Inc............... 12,500 555,000 ------------ Commercial Services & Supplies -- 0.8% Interface, Inc. (b).............. 26,400 401,808 ------------ Consumer Services -- 0.3% Bright Horizons Family Solutions, Inc. (b)........................ 4,520 177,048 ------------ Total Common Stocks (Cost $31,069,634).............. 35,926,753 ------------ PRINCIPAL AMOUNT CORPORATE BONDS & NOTES -- 21.5% Technology Hardware & Equipment -- 3.8% IBM Corporation 6.45%, due 8/01/07.............. $ 500,000 502,552 Lexmark International, Inc. 6.75%, due 5/15/08.............. 500,000 507,931 Xerox Corporation 7.625%, due 6/15/13............. 1,000,000 1,045,000 ------------ 2,055,483 ------------ Healthcare Equipment & Services -- 3.3% Aetna, Inc. 5.75%, due 6/15/11.............. 595,000 603,111 HCA, Inc. 6.30%, due 10/01/12............. 1,000,000 920,000 PRINCIPAL AMOUNT VALUE Healthcare Equipment & Services -- (continued) United Health Group, Inc. 4.875%, due 4/01/13........... $ 250,000 $ 242,572 ------------ 1,765,683 ------------ Telecommunication Services -- 2.9% AT&T Corporation 7.30%, due 11/15/11 (e)....... 1,000,000 1,081,887 BellSouth Corporation 4.75%, due 11/15/12........... 500,000 482,979 ------------ 1,564,866 ------------ Diversified Financials -- 2.7% Fleet National Bank 5.75%, due 1/15/09............ 500,000 504,361 JPMorgan Chase & Company 4.60%, due 1/17/11............ 500,000 486,559 JPMorgan Chase & Company 4.50%, due 1/15/12............ 500,000 480,379 ------------ 1,471,299 ------------ Food & Beverage -- 2.4% Dean Foods Company 8.15%, due 8/01/07............ 1,300,000 1,314,625 ------------ Healthy Living -- 1.9% NBTY, Inc. 7.125%, due 10/01/15.......... 1,000,000 1,002,500 ------------ Software & Services -- 0.9% Oracle Corporation 5.00%, due 1/15/11............ 500,000 494,271 ------------ Transportation -- 0.9% Ryder System, Inc. 4.625%, due 4/01/10........... 500,000 489,571 ------------ Banks -- 0.9% M&I Marshall & Ilsley Bank 3.95%, due 8/14/09............ 500,000 484,627 ------------ Consumer Durables & Apparel -- 0.9% Newell Rubbermaid, Inc. 4.00%, due 5/01/10............ 500,000 478,641 ------------ Automobiles & Components -- 0.9% Toyota Motor Credit Corporation 4.125%, due 7/25/17 (c)(e).... 500,000 476,851 ------------ Total Corporate Bonds and Notes (Cost $11,765,749)............ 11,598,417 ------------ 8 GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS -- (concluded) January 31, 2007 (unaudited) PRINCIPAL AMOUNT VALUE U.S. GOVERNMENT AGENCIES -- 8.7% Fannie Mae 5.50%, due 3/01/12............. $ 415,396 $ 414,618 Federal Home Loan Bank 4.60%, due 4/11/08............. 500,000 496,485 Federal Home Loan Bank 5.14%, due 1/13/09............. 500,000 498,136 Federal Home Loan Bank 5.40%, due 5/27/10............. 250,000 249,217 Federal Home Loan Bank 4.27%, due 7/08/15............. 500,000 466,872 Freddie Mac 5.00%, due 11/01/10............ 500,000 494,594 SLM Corporation 4.00%, due 7/25/14 (d)......... 2,235,000 2,026,363 ------------ Total U.S. Government Agencies (Cost $4,875,912).............. 4,646,285 ------------ SHORT TERM OBLIGATION -- 2.8% Repurchase Agreement -- Investors Bank & Trust Repurchase Agreement, 3.46%, dated 01/31/07, due 02/01/07, proceeds $1,520,142 (collateralized by U.S. Treasury Bonds, 7.875%, due 02/15/2021, value at maturity $1,546,384) (Cost $1,516,063).............. 1,516,063 ------------ TOTAL INVESTMENTS (a) -- 99.7% (Cost $49,227,358)...................... 53,687,518 Other Assets Less Liabilities -- 0.3%....... 182,967 ------------ NET ASSETS -- 100.0%........................ $ 53,870,485 ============ - -------- (a)The cost of investments for federal income tax purposes is $49,232,915 resulting in gross unrealized appreciation and depreciation of $5,233,738 and $779,135 respectively, or net unrealized appreciation of $4,454,603. (b)Non-income producing security. (c)Securities whose values are determined or significantly influenced by trading in markets other than the United States or Canada. (d)Floating rate bond. Rate shown is currently in effect at January 31, 2007. (e)Step rate bond. Rate shown is currently in effect at January 31, 2007. See Notes to Financial Statements 9 GREEN CENTURY BALANCED FUND STATEMENT OF ASSETS AND LIABILITIES January 31, 2007 (unaudited) ASSETS: Investments, at value (cost $49,227,358)...................... $ 53,687,518 Receivables for: Capital stock sold.......................................... 309 Interest.................................................... 207,939 Dividends................................................... 36,336 Miscellaneous receivable.................................... 1,804 ------------ Total assets............................................... 53,933,906 ------------ LIABILITIES: Payable for capital stock repurchased......................... 316 Accrued expenses.............................................. 63,105 ------------ Total liabilities.......................................... 63,421 ------------ NET ASSETS.................................................... $ 53,870,485 ============ NET ASSETS CONSIST OF: Paid-in capital............................................... $ 62,311,376 Undistributed net investment income........................... 24,477 Accumulated net realized losses on investments................ (12,925,528) Net unrealized appreciation on investments.................... 4,460,160 ------------ NET ASSETS.................................................... $ 53,870,485 ============ SHARES OUTSTANDING............................................ 3,008,772 ============ NET ASSET VALUE, REDEMPTION PRICE AND OFFERING PRICE PER SHARE $ 17.90 ============ GREEN CENTURY BALANCED FUND STATEMENT OF OPERATIONS For the six months ended January 31, 2007 (unaudited) INVESTMENT INCOME: Interest income................................................................... $ 464,918 Dividend income (net of $856 foreign withholding taxes)........................... 253,724 ---------- Total investment income........................................................ 718,642 ---------- EXPENSES: Administrative services fee....................................................... 167,884 Investment advisory fee........................................................... 189,335 Distribution fee.................................................................. 42,386 ---------- Total expenses................................................................. 399,605 ---------- NET INVESTMENT INCOME............................................................. 319,037 ---------- NET REALIZED AND UNREALIZED GAINS (LOSSES): Net realized gains on: Investments and foreign currency transactions................................... 1,005,773 Change in net unrealized appreciation/depreciation on: Investments and foreign currency translations.................................... 3,911,398 ---------- NET REALIZED AND UNREALIZED GAINS ON INVESTMENTS AND FOREIGN CURRENCY TRANSACTIONS 4,917,171 ---------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS.............................. $5,236,208 ========== See Notes to Financial Statements 10 GREEN CENTURY BALANCED FUND STATEMENTS OF CHANGES IN NET ASSETS FOR THE SIX FOR THE MONTHS ENDED YEAR ENDED JANUARY 31, 2007 JULY 31, 2006 (UNAUDITED) (AUDITED) INCREASE (DECREASE) IN NET ASSETS: From operations: Net investment income.................................................................. $ 319,037 $ 83,227 Net realized gains on investments and foreign currency transactions.................... 1,005,773 5,364,850 Change in net unrealized appreciation/depreciation on investments and foreign currency translations.......................................................................... 3,911,398 (5,934,658) ----------- ------------ Net increase (decrease) in net assets resulting from operations........................ 5,236,208 (486,581) ----------- ------------ Dividends and distributions to shareholders: From net investment income............................................................ (292,791) (89,058) ----------- ------------ Capital share transactions: Proceeds from sales of shares.......................................................... 2,359,022 6,174,587 Reinvestment of dividends and distributions............................................ 283,790 85,514 Payments for shares redeemed........................................................... (3,945,521) (17,904,028) ----------- ------------ Net decrease in net assets resulting from capital share transactions................... (1,302,709) (11,643,927) ----------- ------------ Total increase (decrease) in net assets.................................................. 3,640,708 (12,219,566) NET ASSETS: Beginning of period.................................................................... 50,229,777 62,449,343 ----------- ------------ End of period.......................................................................... $53,870,485 $ 50,229,777 =========== ============ Undistributed net investment income (loss)............................................. $ 24,477 $ (1,769) GREEN CENTURY BALANCED FUND FINANCIAL HIGHLIGHTS FOR THE SIX MONTHS ENDED FOR THE YEARS ENDED JULY 31, JANUARY 31, 2007 -------------------------------------------- (UNAUDITED) 2006 2005 2004 2003 2002 Net Asset Value, beginning of period................... $ 16.29 $ 16.52 $ 14.11 $ 13.88 $ 10.30 $ 15.94 ------- ------- ------- ------- ------- ------- Income from investment operations: Net investment income................................ 0.11 0.03 0.05 0.12 0.16 0.14 Net realized and unrealized gain (loss) on investments......................................... 1.60 (0.23) 2.42 0.23 3.59 (5.66) ------- ------- ------- ------- ------- ------- Total increase (decrease) from investment operations... 1.71 (0.20) 2.47 0.35 3.75 (5.52) ------- ------- ------- ------- ------- ------- Less dividends and distributions: Dividends from net investment income................. (0.10) (0.03) (0.06) (0.12) (0.17) (0.12) Distributions from net realized gains................ -- -- -- -- -- -- ------- ------- ------- ------- ------- ------- Total decrease from dividends and distributions........ (0.10) (0.03) (0.06) (0.12) (0.17) (0.12) ------- ------- ------- ------- ------- ------- Net Asset Value, end of period......................... $ 17.90 $ 16.29 $ 16.52 $ 14.11 $ 13.88 $ 10.30 ======= ======= ======= ======= ======= ======= Total return........................................... 10.48%(a) (1.22)% 17.41% 2.49% 36.83% (34.80)% Ratios/Supplemental data: Net assets, end of period (in 000's)................. $53,870 $50,230 $62,449 $50,398 $71,306 $36,225 Ratio of expenses to average net assets.............. 1.51%(b) 2.39% 2.38% 2.37% 2.44% 2.39% Ratio of net investment income to average net assets. 1.20%(b) 0.15% 0.35% 0.71% 1.51% 0.95% Portfolio turnover................................... 18%(a) 110% 86% 81% 94% 70% (a)Not annualized (b)Annualized See Notes to Financial Statements 11 GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS January 31, 2007 (unaudited) COMMON STOCKS -- 99.6% SHARES VALUE Banks -- 10.0% BB&T Corporation.................. 3,300 $ 139,458 Cathay General Bancorporation..... 300 10,398 Chittenden Corporation............ 300 9,138 Comerica, Inc..................... 1,000 59,300 Fannie Mae........................ 6,000 339,180 Fifth Third Bancorp............... 3,400 135,660 First Horizon National Corporation 800 34,880 FirstFed Financial Corporation (b) 100 6,895 Freddie Mac....................... 4,200 272,706 Heartland Financial USA, Inc...... 100 2,859 KeyCorp........................... 2,500 95,425 M&T Bank Corporation.............. 500 60,655 MGIC Investment Corporation....... 500 30,860 National City Corporation......... 3,900 147,615 PNC Financial Services Group...... 1,800 132,786 Popular, Inc...................... 1,700 31,042 Regions Financial Corporation..... 4,500 163,170 Sovereign Bancorp, Inc............ 2,200 54,230 SunTrust Banks, Inc............... 2,200 182,820 Synovus Financial Corporation..... 2,000 63,860 U.S. Bancorp...................... 10,800 384,480 Wachovia Corporation.............. 11,700 661,050 Wainwright Bank Trust Company..... 50 568 Washington Mutual, Inc............ 5,800 258,622 Wells Fargo & Company............. 20,600 739,952 ------------ 4,017,609 ------------ Technology Hardware & Equipment -- 8.9% 3Com Corporation (b).............. 2,300 8,970 Adaptec, Inc. (b)................. 700 2,520 ADC Telecommunications, Inc. (b).. 700 11,298 Andrew Corporation (b)............ 1,000 10,620 Apple, Inc. (b)................... 5,200 445,796 Arrow Electronics, Inc. (b)....... 700 24,675 CDW Corporation................... 400 25,668 Cisco Systems, Inc. (b)........... 37,100 986,489 Coherent, Inc. (b)................ 200 6,150 Dell, Inc. (b).................... 13,900 337,075 EMC Corporation (b)............... 13,400 187,466 Gerber Scientific, Inc. (b)....... 100 1,233 Hewlett-Packard Company........... 16,800 727,104 Imation Corporation............... 200 8,702 Lexmark International, Inc. (b)... 600 37,818 SHARES VALUE Technology Hardware & Equipment -- (continued) Merix Corporation (b)............ 100 $ 862 Molex, Inc....................... 900 26,451 Palm, Inc. (b)................... 600 8,298 Plantronics, Inc................. 300 5,910 Polycom, Inc. (b)................ 500 16,810 Qualcomm, Inc.................... 10,100 380,366 Solectron Corporation (b)........ 5,400 17,550 Sun Microsystems, Inc. (b)....... 21,300 141,432 Tektronix, Inc................... 500 14,135 Tellabs, Inc. (b)................ 2,700 27,189 Xerox Corporation (b)............ 5,900 101,480 ------------ 3,562,067 ------------ Diversified Financials -- 8.3% A.G. Edwards, Inc................ 500 33,105 Allied Capital Corporation....... 900 25,974 American Express Company......... 7,400 430,828 Capital One Financial Corporation 2,500 201,000 Charles Schwab Corporation....... 6,200 117,304 Chicago Mercantile Exchange...... 200 112,660 CIT Group........................ 1,200 70,752 Franklin Resources, Inc.......... 1,000 119,110 J.P. Morgan Chase & Company...... 21,200 1,079,716 Janus Capital Group, Inc......... 1,200 24,576 Medallion Financial Corporation.. 100 1,129 Mellon Financial Corporation..... 2,500 106,850 Merrill Lynch & Company, Inc..... 5,400 505,224 Moody's Corporation.............. 1,400 100,184 Northern Trust Corporation....... 1,100 66,825 SLM Corporation.................. 2,500 114,900 State Street Corporation......... 2,000 142,100 T. Rowe Price Group, Inc......... 1,600 76,784 Tradestation Group, Inc. (b)..... 200 2,552 ------------ 3,331,573 ------------ Pharmaceuticals & Biotechnology -- 8.0% Affymetrix, Inc. (b)............. 400 9,984 Allergan, Inc.................... 900 105,039 Amgen, Inc. (b).................. 7,100 499,627 Biogen Idec, Inc. (b)............ 2,100 101,514 Digene Corporation (b)........... 100 5,145 Dionex Corporation (b)........... 100 5,942 Forest Laboratories, Inc. (b).... 1,900 106,609 Genzyme Corporation (b).......... 1,600 105,168 12 GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS -- (continued) January 31, 2007 (unaudited) SHARES VALUE Pharmaceuticals & Biotechnology -- (continued) Gilead Sciences, Inc. (b)......... 2,800 $ 180,096 Invitrogen Corporation (b)........ 300 18,369 Johnson & Johnson................. 17,700 1,182,360 King Pharmaceuticals, Inc. (b).... 1,500 26,790 MedImmune, Inc. (b)............... 1,500 51,990 Merck & Co., Inc.................. 13,300 595,175 Millipore Corporation (b)......... 300 20,544 Mylan Laboratories................ 1,300 28,782 Thermo Fisher Scientific, Inc. (b) 2,500 119,625 Waters Corporation (b)............ 600 34,014 Watson Pharmaceuticals, Inc. (b).. 600 16,332 ------------ 3,213,105 ------------ Software & Services -- 6.9% Adobe Systems, Inc. (b)........... 3,600 139,932 Advent Software, Inc. (b)......... 100 3,575 Autodesk, Inc. (b)................ 1,400 61,208 Automatic Data Processing......... 3,400 162,248 BMC Software, Inc. (b)............ 1,300 44,707 Ceridian Corporation (b).......... 900 26,973 Compuware Corporation (b)......... 2,100 18,837 Convergys Corporation (b)......... 800 20,832 eBay, Inc. (b).................... 7,100 229,969 Electronic Arts, Inc. (b)......... 1,900 95,000 Electronic Data Systems Corporation...................... 3,200 84,192 Microsoft Corporation............. 52,900 1,632,494 Novell, Inc. (b).................. 2,000 14,500 Paychex, Inc...................... 2,100 84,021 Red Hat, Inc. (b)................. 1,200 27,276 Salesforce.com, Inc. (b).......... 500 21,915 Sapient Corporation (b)........... 500 3,140 Symantec Corporation (b).......... 5,700 100,947 ------------ 2,771,766 ------------ Telecommunication Services -- 6.3% AT&T, Inc......................... 38,275 1,440,288 Citizens Communications Company.......................... 2,000 29,320 Sprint Nextel Corporation......... 17,600 313,808 Telephone & Data Systems, Inc..... 600 33,570 Verizon Communications, Inc....... 17,900 689,508 ------------ 2,506,494 ------------ SHARES VALUE Retailing -- 5.5% Autozone, Inc. (b)................ 300 $ 37,689 Bed Bath & Beyond, Inc. (b)....... 1,700 71,723 Best Buy Company, Inc............. 2,500 126,000 Charming Shoppes, Inc. (b)........ 800 10,496 Circuit City Stores, Inc.......... 900 18,369 Claire's Stores, Inc.............. 600 20,640 Dollar General.................... 1,900 32,186 Family Dollar Stores.............. 900 29,160 Foot Locker, Inc.................. 900 20,196 Gap, Inc.......................... 3,200 61,344 Genuine Parts Company............. 1,000 47,520 Home Depot, Inc................... 12,500 509,250 J.C. Penney Company, Inc ......... 1,400 113,736 Limited Brands.................... 2,100 58,674 Lowe's Companies, Inc............. 9,300 313,503 Men's Wearhouse, Inc.............. 300 12,882 Nordstrom, Inc.................... 1,400 77,994 Office Depot, Inc. (b)............ 1,700 63,563 Pep Boys -- Manny, Moe & Jack..... 300 4,593 Radioshack Corporation............ 800 17,680 Staples, Inc...................... 4,400 113,168 Target Corporation................ 5,300 325,208 Tiffany & Company................. 800 31,408 TJX Companies, Inc................ 2,800 82,796 ------------ 2,199,778 ------------ Healthcare Equipment & Services -- 5.5% Bausch & Lomb, Inc................ 300 16,704 Baxter International, Inc......... 4,000 198,640 Becton Dickinson & Company........ 1,500 115,410 Biomet, Inc....................... 1,500 63,540 Boston Scientific Corporation (b). 7,200 132,840 C.R. Bard, Inc.................... 600 49,512 CIGNA Corporation................. 600 79,440 Cross Country Healthcare, Inc. (b) 100 2,256 Gen-Probe, Inc. (b)............... 300 15,516 Health Management Association, Class A.......................... 1,500 29,175 Hillenbrand Industries............ 400 22,804 Humana, Inc. (b).................. 1,000 55,500 IMS Health, Inc................... 1,200 34,632 Invacare Corporation.............. 200 4,318 Manor Care, Inc................... 500 26,620 McKesson Corporation.............. 1,800 100,350 13 GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS -- (continued) January 31, 2007 (unaudited) SHARES VALUE Healthcare Equipment & Services -- (continued) Medtronic, Inc..................... 7,000 $ 374,150 Molina Healthcare, Inc. (b)........ 100 3,083 Patterson Companies, Inc. (b)...... 900 33,849 Quest Diagnostics.................. 1,000 52,480 Sierra Health Services (b)......... 300 12,060 St Jude Medical, Inc. (b).......... 2,200 94,072 Stryker Corporation................ 1,800 111,492 Synovis Life Technologies, Inc. (b) 100 1,235 UnitedHealth Group, Inc............ 8,200 428,532 Zimmer Holdings, Inc. (b).......... 1,500 126,330 ------------ 2,184,540 ------------ Household & Personal Products -- 4.7% Alberto-Culver Company............. 500 11,435 Avon Products, Inc................. 2,700 92,853 Church & Dwight Company, Inc....... 400 18,124 Clorox Company..................... 900 58,878 Colgate-Palmolive Company.......... 3,100 211,730 Estee Lauder Companies, Inc. (The), Class A........................... 800 38,000 Kimberly-Clark Corporation......... 2,800 194,320 Procter & Gamble Company........... 19,400 1,258,478 ------------ 1,883,818 ------------ Food & Beverage -- 4.5% Campbell Soup Company.............. 1,300 50,024 Chiquita Brands International...... 300 4,761 Coca-Cola Company (The)............ 12,500 598,500 Dean Foods Company (b)............. 800 35,400 General Mills, Inc................. 2,100 120,204 Green Mountain Coffee Roasters, Inc. (b).......................... 50 2,956 H.J. Heinz Company................. 2,000 94,240 Hershey Company (The).............. 1,100 56,144 J.M. Smucker Company (The)......... 300 14,247 Kellogg Company.................... 1,500 73,905 McCormick & Company, Inc........... 800 31,232 PepsiAmericas, Inc................. 400 8,820 Pepsico, Inc....................... 10,000 652,400 Tootsie Roll Industries, Inc....... 200 6,344 Wm. Wrigley Jr. Company............ 1,300 66,976 ------------ 1,816,153 ------------ SHARES VALUE Semiconductors -- 3.9% Advanced Micro Devices (b)....... 3,300 $ 51,315 Analog Devices................... 2,100 68,775 Applied Materials, Inc........... 8,500 150,705 Entegris, Inc. (b)............... 800 8,584 Intel Corporation................ 35,300 739,888 Lam Research Corporation (b)..... 900 41,229 LSI Logic Corporation (b)........ 2,400 22,560 Micron Technology, Inc. (b)...... 4,600 59,570 National Semiconductor Corporation..................... 1,800 41,634 Novellus Systems, Inc. (b)....... 800 24,664 Texas Instruments, Inc........... 9,100 283,829 Xilinx, Inc...................... 2,100 51,030 ------------ 1,543,783 ------------ Media -- 3.7% Dow Jones & Company, Inc......... 400 15,084 E.W. Scripps Company (The), Class A......................... 500 24,415 Emmis Communciations, Class A.... 200 1,728 Lee Enterprises, Inc............. 300 9,969 McClatchy Company (The).......... 200 7,736 McGraw-Hill Companies, Inc....... 2,200 147,576 Media General, Inc., Class A..... 100 4,001 Meredith Corporation............. 200 11,792 New York Times Company, Class A......................... 900 20,781 Omnicom Group.................... 1,000 105,200 Radio One, Inc. (b).............. 50 366 Scholastic Corporation (b)....... 200 7,070 Time Warner, Inc................. 24,300 531,441 Tribune Company.................. 1,200 36,648 Univision Communications, Class A (b)..................... 1,500 53,565 Valassis Communications, Inc. (b) 300 4,611 Walt Disney Company (The)........ 12,700 446,659 Washington Post Company, Class B......................... 40 30,508 ------------ 1,459,150 ------------ Insurance -- 3.4% Aflac, Inc....................... 3,000 142,830 Ambac Financial Group, Inc....... 600 52,860 Chubb Corporation................ 2,500 130,100 Cincinnati Financial Corporation. 1,100 49,214 14 GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS -- (continued) January 31, 2007 (unaudited) SHARES VALUE Insurance -- (continued) Hartford Financial Services Group. 1,900 $ 180,329 Lincoln National Corporation...... 1,800 120,852 Marsh & McLennan Companies........ 3,400 100,300 MBIA, Inc......................... 800 57,464 Principal Financial Group......... 1,700 104,737 Progressive Corporation........... 4,700 108,993 Safeco Corporation................ 600 38,406 St. Paul Travelers Companies, Inc. (The)............................ 4,200 213,570 UnumProvident Corporation......... 2,100 46,200 Wesco Financial Corporation....... 30 14,514 ------------ 1,360,369 ------------ Capital Goods -- 3.3% 3M Company........................ 4,500 334,350 A.O. Smith Corporation............ 100 3,835 American Power Conversion......... 1,000 30,740 Apogee Enterprises, Inc........... 200 3,806 Baldor Electric................... 200 7,064 CLARCOR, Inc...................... 300 10,398 Cooper Industries, Inc., Class A.. 600 54,834 Cummins, Inc...................... 300 40,368 Deere & Company................... 1,400 140,392 Donaldson Company, Inc............ 400 14,088 Emerson Electric Company.......... 4,900 220,353 Fastenal Company.................. 800 29,824 GATX Corporation.................. 300 13,680 Graco, Inc........................ 400 16,308 Granite Construction, Inc......... 200 10,712 Hubbell, Inc., Class B............ 400 19,280 Illinois Tool Works............... 2,600 132,574 Kadant, Inc. (b).................. 100 2,735 Lawson Products, Inc.............. 50 2,220 Lincoln Electric Holdings......... 300 18,231 Masco Corporation................. 2,400 76,776 Milacron, Inc. (b)................ 300 264 Nordson Corporation............... 200 10,344 Pall Corporation.................. 700 24,332 SPX Corporation................... 400 28,076 Tennant Company................... 100 3,092 Thomas & Betts Corporation (b).... 300 14,367 Toro Company...................... 300 15,381 Trex Company, Inc. (b)............ 100 2,676 W.W Grainger, Inc................. 400 31,060 ------------ 1,312,160 ------------ SHARES VALUE Energy -- 3.2% Anadarko Petroleum Corporation...... 2,800 $ 122,500 Apache Corporation.................. 2,000 145,940 Cameron International Corporation (b).................... 700 36,750 Chesapeake Energy Corporation....... 2,500 74,025 Devon Energy Corporation............ 2,700 189,243 EOG Resources, Inc.................. 1,500 103,695 Helmerich & Payne................... 600 16,098 Kinder Morgan, Inc.................. 700 74,200 National Oilwell Varco, Inc. (b).... 1,100 66,704 Newfield Exploration Company (b).... 800 34,248 Noble Energy, Inc................... 1,100 58,751 Pioneer Natural Resources Company............................ 800 32,800 Rowan Companies, Inc................ 700 23,023 Smith International, Inc............ 1,200 47,616 Sunoco, Inc......................... 800 50,504 Williams Companies, Inc............. 3,600 97,164 XTO Energy, Inc..................... 2,200 111,034 ------------ 1,284,295 ------------ Transportation -- 2.5% Alaska Air Group, Inc. (b).......... 200 8,570 AMR Corporation (b)................. 1,400 51,870 FedEx Corporation................... 1,900 209,760 JetBlue Airways (b)................. 1,100 15,048 Kansas City Southern (b)............ 500 15,030 Norfolk Southern Corporation........ 2,400 119,160 Ryder System, Inc................... 400 21,816 Southwest Airlines.................. 4,800 72,480 United Parcel Service, Inc., Class B 6,600 477,048 YRC Worldwide, Inc. (b)............. 300 13,305 ------------ 1,004,087 ------------ Food & Staples Retailing -- 2.5% Costco Wholesale Corporation........ 2,800 157,304 CVS Corporation..................... 5,000 168,250 Kroger Company...................... 4,400 112,640 Longs Drugstores Corporation........ 200 8,600 Safeway, Inc........................ 2,700 97,281 Supervalu, Inc...................... 1,300 49,374 Sysco Corporation................... 3,800 131,290 Walgreen Company.................... 6,100 276,330 ------------ 1,001,069 ------------ 15 GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS -- (continued) January 31, 2007 (unaudited) SHARES VALUE Consumer Durables & Apparel -- 1.9% American Greetings Corporation, Class A......................... 400 $ 9,608 Black & Decker Corporation....... 400 34,912 Centex Corporation............... 700 37,583 Champion Enterprises, Inc. (b)... 500 4,105 Coach, Inc. (b).................. 2,200 100,892 D.R. Horton, Inc................. 1,700 49,402 Harman International............. 400 37,828 Hartmarx Corporation (b)......... 200 1,396 KB Home.......................... 500 27,110 Leggett & Platt, Inc............. 1,100 26,664 Liz Claiborne, Inc............... 600 26,640 Mattel, Inc...................... 2,300 56,028 Newell Rubbermaid, Inc........... 1,700 50,218 Nike, Inc., Class B.............. 1,200 118,572 Phillips-Van Heusen Corporation.. 300 16,545 Pulte Homes, Inc................. 1,300 44,642 Snap-On, Inc..................... 400 19,284 Stanley Works (The).............. 500 28,630 Stride Rite Corporation.......... 200 3,452 Timberland Company (The) (b)..... 300 9,051 Tupperware Brands Corporation.... 400 9,332 Whirlpool Corporation............ 500 45,715 ------------ 757,609 ------------ Materials -- 1.8% Air Products & Chemicals, Inc.... 1,300 97,058 Airgas, Inc...................... 500 20,810 Bemis Company.................... 600 20,346 Cabot Corporation................ 400 17,896 Calgon Carbon Corporation (b).... 200 1,254 Caraustar Industries, Inc. (b)... 200 1,592 Chaparral Steel Company.......... 300 15,384 Crown Holdings, Inc. (b)......... 1,000 22,070 Ecolab, Inc...................... 1,100 48,290 H.B. Fuller Company.............. 400 10,348 Lubrizol Corporation............. 400 20,608 MeadWestvaco Corporation......... 1,100 33,154 Minerals Technologies, Inc....... 100 5,807 Nucor Corporation................ 1,800 116,172 Praxair, Inc..................... 2,000 126,120 Rock-Tenn Company, Class A....... 200 6,544 Rohm And Haas Company............ 900 46,854 Schnitzer Steel Industries, Inc., Class A......................... 100 3,850 SHARES VALUE Materials -- (continued) Sealed Air Corporation....... 500 $ 32,950 Sigma-Aldrich Corporation.... 800 30,360 Sonoco Products Company...... 600 23,100 Valspar Corporation.......... 600 16,908 Wausau Paper Corporation..... 300 4,272 Wellman, Inc................. 200 570 Worthington Industries....... 400 7,672 ------------ 729,989 ------------ Consumer Services -- 1.5% Bright Horizons Family Solututions (b)............. 200 7,834 Darden Restaurants, Inc...... 900 35,226 DeVry, Inc................... 400 11,264 McDonald's Corporation....... 7,600 337,060 Ruby Tuesday, Inc............ 400 11,444 Starbucks Corporation (b).... 4,600 160,724 Wendy's International, Inc... 600 20,376 ------------ 583,928 ------------ Utilities -- 1.0% AGL Resources, Inc........... 500 19,650 Alliant Energy Corporation... 700 25,445 Atmos Energy Corporation..... 500 15,620 Cascade Natural Gas.......... 100 2,601 Cleco Corporation............ 400 10,216 Energen Corporation.......... 400 18,512 Equitable Resources, Inc..... 700 30,275 IDACORP, Inc................. 300 11,085 KeySpan Corporation.......... 1,100 44,880 MGE Energy, Inc.............. 100 3,418 National Fuel Gas Company.... 500 20,345 Nicor, Inc................... 300 13,650 NiSource, Inc................ 1,700 40,460 Northwest Natural Gas Company 200 8,138 OGE Energy Corporation....... 600 23,232 Peoples Energy Corporation... 200 8,710 Pepco Holdings, Inc.......... 1,200 30,696 Questar Corporation.......... 500 40,600 Southern Union Company....... 700 19,467 WGL Holdings................. 300 9,489 ------------ 396,489 ------------ 16 GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS -- (concluded) January 31, 2007 (unaudited) SHARES VALUE Real Estate -- 0.8% Equity Office Properties Trust. 2,200 $ 122,210 General Growth Properties...... 1,500 92,280 Maguire Properties, Inc........ 200 8,690 ProLogis....................... 1,500 97,500 ------------ 320,680 ------------ Commercial Services & Supplies -- 0.8% Avery Dennison Corporation..... 600 41,016 Brady Corporation, Class A..... 300 11,235 Deluxe Corporation............. 300 8,976 Herman Miller, Inc............. 400 15,040 HNI Corporation................ 300 14,562 IKON Office Solutions, Inc..... 800 11,920 Interface, Inc., Class A (b)... 300 4,566 Kelly Services................. 100 3,101 Monster Worldwide, Inc. (b).... 800 39,528 Pitney Bowes, Inc.............. 1,400 67,018 R.R. Donnelley & Sons Company.. 1,300 48,230 Robert Half International, Inc. 1,000 40,700 Standard Register.............. 100 1,263 Steelcase, Inc................. 400 7,836 ------------ 314,991 ------------ Renewable Energy & Energy Efficiency -- 0.3% Energy Conversion Devices (b).. 200 6,890 Itron, Inc. (b)................ 200 11,528 Johnson Controls, Inc.......... 1,200 110,952 Ormat Technologies, Inc........ 50 1,960 ------------ 131,330 ------------ Automobiles & Components -- 0.3% Bandag, Inc.................... 100 5,095 Cooper Tire & Rubber........... 400 6,396 Harley-Davidson, Inc........... 1,600 109,232 Modine Manufacturing Company... 200 5,232 Spartan Motors, Inc............ 150 2,511 ------------ 128,466 ------------ SHARES VALUE Healthy Living -- 0.2% Gaiam, Inc. (b)...................... 100 $ 1,268 Hain Celestial Group, Inc. (The) (b). 200 5,880 United Natural Foods, Inc. (b)....... 300 9,912 Whole Foods Market, Inc.............. 900 38,871 Wild Oats Markets, Inc. (b).......... 200 2,906 ------------ 58,837 ------------ Total Securities (Cost $38,230,679)......................... 39,874,134 ------------ SHORT TERM OBLIGATION -- 0.3% Repurchase Agreement -- Investors Bank & Trust Repurchase Agreement, 3.50%, dated 01/31/07, due 02/01/07, proceeds $99,847.03 (collateralized by U.S. Treasury Bonds, 6.782%, due 03/01/2029, value at maturity $104,829) (Cost $99,837)................... 99,837 ------------ TOTAL INVESTMENTS -- 99.9% (Cost $38,330,516)...................... 39,973,971 Other Assets Less Liabilities -- 0.1%....... 50,073 ------------ NET ASSETS -- 100%.......................... $ 40,024,044 ============ - -------- (a)The cost of investments for federal income tax purposes is $38,331,358 resulting in gross unrealized appreciation and depreciation of $2,036,776 and $394,163 respectively, or net unrealized appreciation of $1,642,613. (b)Non-income producing security See Notes to Financial Statements 17 GREEN CENTURY EQUITY FUND STATEMENT OF ASSETS AND LIABILITIES January 31, 2007 (unaudited) ASSETS: Investments, at value (cost $38,330,516)...................... $39,973,971 Receivables for: Capital stock sold........................................... 17,236 Interest..................................................... 10 Dividends.................................................... 63,666 ----------- Total assets............................................... 40,054,883 ----------- LIABILITIES: Payable for capital stock repurchased......................... 306 Accrued expenses.............................................. 30,533 ----------- Total liabilities.......................................... 30,839 ----------- NET ASSETS.................................................... $40,024,044 =========== NET ASSETS CONSIST OF: Paid-in capital............................................... $36,115,945 Undistributed net investment income........................... 33,373 Accumulated net realized gain on investments.................. 2,231,271 Net unrealized appreciation on investments.................... 1,643,455 ----------- NET ASSETS.................................................... $40,024,044 =========== SHARES OUTSTANDING............................................ 1,756,698 =========== NET ASSET VALUE, REDEMPTION PRICE AND OFFERING PRICE PER SHARE $ 22.78 =========== GREEN CENTURY EQUITY FUND STATEMENT OF OPERATIONS For the six months ended January 31, 2007 (unaudited) INVESTMENT INCOME: Interest income................................................... $ 12,456 Dividend income (net of $23 foreign withholding taxes)............ 122,500 Investment income from Domini Social Equity Trust ("Domini Trust") 205,796 ----------- Total investment income........................................ 340,752 ----------- EXPENSES: Administrative services fee....................................... 134,070 Investment advisory fee........................................... 17,277 Expenses from Domini Trust........................................ 24,100 ----------- Total expenses................................................. 175,447 ----------- NET INVESTMENT INCOME............................................. 165,305 ----------- NET REALIZED AND UNREALIZED GAINS (LOSSES): Net realized gains on: Investments...................................................... 3,312 Investments allocated from Domini Trust.......................... 298,836 Withdrawal of investment from Domini Trust....................... 9,896,339 ----------- 10,198,487 Change in net unrealized appreciation/depreciation on: Investments...................................................... 1,643,455 Investments allocated from Domini Trust.......................... (7,010,701) ----------- (5,367,246) ----------- NET REALIZED AND UNREALIZED GAIN ON INVESTMENTS................... 4,831,241 ----------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS.............. $ 4,996,546 =========== See Notes to Financial Statements 18 GREEN CENTURY EQUITY FUND STATEMENTS OF CHANGES IN NET ASSETS FOR THE SIX FOR THE MONTHS ENDED YEAR ENDED JANUARY 31, 2007 JULY 31, 2006 (UNAUDITED) (AUDITED) INCREASE (DECREASE) IN NET ASSETS: From operations: Net investment income........................................................... $ 165,305 $ 67,326 Net realized gains (losses) on: Investments..................................................................... 3,312 -- Investments allocated from Domini Trust......................................... 298,836 (877,419) Withdrawal of investment from Domini Trust...................................... 9,896,339 -- Change in net unrealized appreciation/depreciation on: Investments..................................................................... 1,643,455 -- Investments allocated from Domini Trust......................................... (7,010,701) 884,972 ----------- ----------- Net increase in net assets resulting from operations............................ 4,996,546 74,879 ----------- ----------- Dividends and distributions to shareholders: From net investment income...................................................... (173,144) (55,690) ----------- ----------- Capital share transactions: Proceeds from sales of shares................................................... 4,242,201 2,575,101 Reinvestment of dividends and distributions..................................... 169,389 54,195 Payments for shares redeemed.................................................... (2,148,611) (5,094,268) ----------- ----------- Net increase (decrease) in net assets resulting from capital share transactions. 2,262,979 (2,464,972) ----------- ----------- Total increase (decrease) in net assets........................................... 7,086,381 (2,445,783) NET ASSETS: Beginning of period............................................................. 32,937,663 35,383,446 ----------- ----------- End of period................................................................... $40,024,044 $32,937,663 =========== =========== Undistributed net investment income............................................. $ 33,373 $ 41,212 See Notes to Financial Statements 19 GREEN CENTURY EQUITY FUND FINANCIAL HIGHLIGHTS FOR THE SIX MONTHS ENDED FOR THE YEARS ENDED JULY 31, JANUARY 31, 2007 -------------------------------------------- (UNAUDITED) 2006 2005 2004 2003 2002 Net Asset Value, beginning of period................... $ 19.91 $ 19.91 $ 18.18 $ 16.45 $ 14.85 $ 20.84 ------- ------- ------- ------- ------- ------- Income from investment operations: Net investment income (loss)......................... 0.09 0.04 0.12 -- 0.01 (0.05) Net realized and unrealized gain (loss) on investments......................................... 2.88 (0.01) 1.72 1.74 1.59 (4.62) ------- ------- ------- ------- ------- ------- Total increase (decrease) from investment operations... 2.97 0.03 1.84 1.74 1.60 (4.67) ------- ------- ------- ------- ------- ------- Less dividends and distributions: Dividends from net investment income................. (0.10) (0.03) (0.11) (0.01) -- -- Distributions from net realized gains................ -- -- -- -- -- (1.32) ------- ------- ------- ------- ------- ------- Total decrease from dividends and distributions........ (0.10) (0.03) (0.11) (0.01) -- (1.32) ------- ------- ------- ------- ------- ------- Net Asset Value, end of period......................... $ 22.78 $ 19.91 $ 19.91 $ 18.18 $ 16.45 $ 14.85 ======= ======= ======= ======= ======= ======= Total return........................................... 14.93%(b) 0.16% 10.10% 10.61% 10.77% (23.67)% Ratios/Supplemental data: Net assets, end of period (in 000's)................. $40,024 $32,938 $35,383 $33,152 $29,347 $27,387 Ratio of expenses to average net assets.............. 0.95%(c) 1.50% 1.50% 1.50% 1.50% 1.50% Ratio of net investment income (loss) to average net assets.............................................. 0.90%(c) 0.20% 0.64% (0.01)% 0.05% (0.26)% Portfolio turnover (a)............................... 2%(d) 12% 9% 8% 8% 13% (a)Represents portfolio turnover for the Domini Social Equity Trust ("Domini Trust") for the years ended 2006, 2005, 2004, 2003 and 2002. (b)Not annualized. (c)Annualized. (d)Represents portfolio turnover for the Equity Fund from November 28, 2006 to January 31, 2007. The portfolio turnover for the Domini Trust from August 1, 2006 to November 27, 2006 was 1%. For further information regarding the withdrawal of the Equity Fund's investment in the Domini Trust, please see the notes to the financial statements. See Notes to Financial Statements 20 GREEN CENTURY BALANCED FUND GREEN CENTURY EQUITY FUND NOTES TO FINANCIAL STATEMENTS (unaudited) NOTE 1 -- Organization and Significant Accounting Policies Green Century Funds (the "Trust") is a Massachusetts business trust which offers two separate series, the Green Century Balanced Fund (the "Balanced Fund") and the Green Century Equity Fund (the "Equity Fund"), collectively, the "Funds". The Trust is registered under the Investment Company Act of 1940, as amended (the "Act"), as an open-end management investment company. The Trust accounts separately for the assets, liabilities and operations of each series. The Balanced Fund commenced operations on March 18, 1992 and the Equity Fund commenced operations on September 13, 1995. Through November 27, 2006, the Equity Fund invested substantially all of its assets in the Domini Social Equity Trust (the "Domini Trust"), an open-end, diversified management investment company which had the same investment objective as the Fund. The Equity Fund accounted for its investment in the Domini Trust as a partnership investment and recorded its share of the Domini Trust income, expenses and realized and unrealized gains and losses daily. The value of such investment reflected the Fund's proportionate interest in the net assets of the Domini Trust (2.57% at November 27, 2006). Effective November 28, 2006, the Equity Fund withdrew its investment from the Domini Trust and directly invested in the securities of the companies included in the Domini 400 Social/SM/ Index (the "Domini Index"). The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The following is a summary of the Trust's significant accounting policies: (A)Investment Valuation for the Balanced Fund, and effective November 28, 2006, for the Equity Fund: Equity securities listed on national securities exchanges other than NASDAQ are valued at last sale price. If a last sale price is not available, securities listed on national exchanges other than NASDAQ are valued at the mean between the closing bid and closing ask prices. NASDAQ National Market(R) and SmallCap/SM/ securities are valued at the NASDAQ Official Closing Price ("NOCP"). The NOCP is based on the last traded price if it falls within the concurrent best bid and ask prices and is normalized pursuant to NASDAQ's published procedures if it falls outside this range. If an NOCP is not available for any such security, the security is valued at the last sale price, or, if there have been no sales that day, at the mean between the closing bid and closing ask prices. Unlisted equity securities are valued at last sale price, or when last sale prices are not available, at the last quoted bid price. Debt securities (other than short-term obligations maturing in sixty days or less) are valued on the basis of valuations furnished by a pricing service which takes into account appropriate factors such as institution-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, and other market data, without exclusive reliance on quoted prices or exchange or over-the-counter prices, since such valuations are believed to reflect more accurately the fair value of the securities. Securities, if any, for which there are no such valuations or quotations available, or for which the market quotation is not reliable, are valued at fair value by management as determined in good faith under guidelines established by the Trustees. Short-term obligations maturing in sixty days or less are valued at amortized cost, which approximates market value. 21 GREEN CENTURY BALANCED FUND GREEN CENTURY EQUITY FUND NOTES TO FINANCIAL STATEMENTS -- (continued) Investment Valuation for the Equity Fund through November 27, 2006: Through November 27, 2006, the Equity Fund recorded its investment in the Domini Trust at fair value. The Domini Trust valued securities listed or traded on national securities exchanges at the last sale price or, if there were no sales that day, at the mean of the current bid and ask price that represented the current value of the security. Securities listed on the NASDAQ National Market System were valued using the NASDAQ Official Closing Price ("NOCP"). If an NOCP was not available for a security listed on the NASDAQ National Market System, the security was valued at the last sale price or, if there were no sales that day, at the mean of the current bid and ask price. Portfolio securities for which market quotations were not readily available were valued at fair value as determined in good faith under consistently applied procedures by or at the direction of the Domini Trust's Board of Trustees. (B)Securities Transactions and Investment Income for the Balanced Fund, and effective November 28, 2006, for the Equity Fund: Securities transactions are recorded on a trade date basis. Realized gains and losses from securities transactions are determined using the identified cost basis. Interest income, including amortization of premiums and accretion of discounts on bonds, is recognized on the accrual basis and dividend income is recorded on ex-dividend date. Securities Transactions, Investment Income and Expenses for the Equity Fund through November 27, 2006: Through November 27, 2006, the Equity Fund recorded daily its proportionate share of the Domini Trust's income, expenses and realized and unrealized gains and losses. In addition, the Fund accrues its own expenses. (C)Options Transactions: The Balanced Fund may utilize options to hedge or protect from adverse movements in the market values of its portfolio securities and to enhance return. The Equity Fund may utilize options to hedge against possible increases in the value of securities which are expected to be purchased by the Equity Fund or possible declines in the value of securities which are expected to be sold by the Equity Fund. The use of options may involve risks such as the possibility of illiquid markets or imperfect correlation between the value of the option and the underlying securities. The Funds may write put or call options. Premiums received upon writing put or call options are recorded as an asset with a corresponding liability which is subsequently adjusted to the current market value of the option. Changes between the initial premiums received and the current market value of the options are recorded as unrealized gains or losses. When an option is closed, expired or exercised, a gain or loss is realized and the liability is eliminated. The Funds continue to bear the risk of adverse movements in the price of the underlying assets during the period of the option, although any potential loss during the period would be reduced by the amount of the option premium received. As required by the Act, liquid securities are designated as collateral in an amount equal to the market value of open options contracts. (D)Repurchase Agreements: The Balanced Fund, and effective November 28, 2006, the Equity Fund, may enter into repurchase agreements with selected banks or broker-dealers that are deemed by the Funds' adviser to be creditworthy pursuant to guidelines established by the Board of Trustees. Each repurchase agreement is recorded at cost, which approximates fair value. The Funds require 22 GREEN CENTURY BALANCED FUND GREEN CENTURY EQUITY FUND NOTES TO FINANCIAL STATEMENTS -- (continued) that the market value of collateral, represented by securities (primarily U.S. Government securities), be sufficient to cover payments of interest and principal and that the collateral be maintained in a segregated account with a custodian bank in a manner sufficient to enable the Funds to obtain those securities in the event of a default of the counterparty. In the event of default or bankruptcy by the counterparty to the repurchase agreement, retention of the collateral may be subject to legal proceedings. (E)Distributions: Distributions to shareholders are recorded on the ex-dividend date. The Funds declare and pay dividends of net investment income, if any, semi-annually and distribute net realized capital gains, if any, annually. The amount and character of income and net realized gains to be distributed are determined in accordance with Federal income tax rules and regulations, which may differ from accounting principles generally accepted in the United States of America. To the extent that these differences are attributable to permanent book and tax accounting differences, the components of net assets have been adjusted. (F)Federal Taxes: Each series of the Trust is treated as a separate entity for Federal income tax purposes. Each Fund's policy is to comply with the provisions of the Internal Revenue Code applicable to regulated investment companies. Accordingly, no provisions for Federal income or excise tax are necessary. (G)Redemption Fee: A 2.00% redemption fee is retained by the Funds to offset the effect of transaction costs and other expenses associated with short-term investing. The fee is imposed on redemptions or exchanges of shares held 60 days or less from their purchase date. For the six months ended January 31, 2007, the Balanced Fund and Equity Fund received $143 and $342, respectively, in redemption fees. Redemption fees are recorded as an adjustment to paid-in capital. NOTE 2 -- Transactions With Affiliates (A)Investment Adviser: Green Century Capital Management, Inc. ("Green Century") is the adviser ("the Adviser") for the Balanced Fund and effective November 28, 2006, for the Equity Fund. Green Century oversees the portfolio management of the Funds on a day-to-day basis. For the period August 1, 2006 through November 27, 2006, the Balanced Fund paid Green Century a fee, accrued daily and paid monthly, at an annual rate equal to 0.75% of the Balanced Fund's average daily net assets. Effective November 28, 2006, the Balanced Fund pays Green Century a fee, accrued daily and paid monthly, at an annual rate equal to 0.65% of the Balanced Fund's average daily net assets. Effective November 28, 2006, the Equity Fund pays Green Century a fee, accrued daily and paid monthly, at an annual rate of 0.25% of the Equity Fund's average daily net assets up to but not including $100 million, 0.22% of average daily net assets including $100 million up to but not including $500 million, 0.17% of average daily net assets including $500 million up to but not including $1 billion and 0.12% of average daily net assets equal to or in excess of $1 billion. (B)Subadvisers: Trillium Asset Management Corporation ("Trillium") is the subadviser for the Balanced Fund. Trillium is paid a fee by the Adviser at an annual rate of 0.40% on the first $30,000,000 of average daily net assets and 0.35% on average daily net assets in excess of 23 GREEN CENTURY BALANCED FUND GREEN CENTURY EQUITY FUND NOTES TO FINANCIAL STATEMENTS -- (continued) $30,000,000 for its services. For the six months ended January 31, 2007, Green Century accrued fees of $100,382 to Trillium. As of November 28, 2006, Mellon Equity Associates, LLP ("Mellon") is the subadviser for the Equity Fund. Mellon is paid a fee by the Adviser the greater of $50,000 or 0.08% of the value of the average daily net assets of the Fund up to but not including $100 million, 0.05% of the average daily net assets of the Fund from and including $100 million up to but not including $500 million, 0.02% of the average daily net assets of the Fund from and including $500 million up to but not including $1 billion and 0.01% of the average daily net assets of the Fund equal to or in excess of $1 billion for its services. For the period ended January 31, 2007, Green Century accrued fees of $8,904 to Mellon. (C)Administrator: Green Century is the administrator ("the Administrator") of the Green Century Funds. Pursuant to the Administrative Services Agreement, Green Century pays all the expenses of each Fund other than the investment advisory fees; fees under a Distribution Plan, if any; interest; taxes; brokerage costs and other capital expenses; expenses of non-interested trustees (including counsel fees) and any extraordinary expenses. For the period August 1, 2006 through August 24, 2006, for these services Green Century received a fee from the Balanced Fund at a rate such that immediately following any payment to the Administrator, total operating expenses, on an annual basis, were limited to 2.50% of the Fund's average daily net assets up to $30 million, 2.25% of the Fund's average daily net assets from $30 million to $100 million, and 1.75% of the Fund's average daily net assets in excess of $100 million. Effective August 25, 2006, the Balanced Fund pays Green Century a fee at a rate such that immediately following any payment to the Administrator, the total operating expenses of the Fund, on an annual basis, do not exceed 1.38% of the Fund's average daily net assets. For the period August 1, 2006 to August 2, 2006, Green Century received a fee from the Equity Fund at a rate such that immediately following any payment to the Administrator, the combined total operating expenses of the Fund and the Domini Trust (including investment advisory and distribution fees), on an annual basis, did not exceed 1.50% of the Fund's average daily net assets. Effective August 3, 2006, the Equity Fund pays Green Century a fee at a rate such that immediately following any payment to the Administrator, the total operating expenses of the Fund, on an annual basis, do not exceed 0.95% of the Fund's average daily net assets. (D)Subadministrator: Pursuant to a Subadministrative Services Agreement with the Administrator, UMB Fund Services, Inc. ("UMBFS") as Subadministrator, is responsible for conducting certain day-to-day administration of the Trust subject to the supervision and direction of the Administrator. For the six months ended January 31, 2007, Green Century accrued fees of $40,986 and $39,962 to UMBFS related to services performed on behalf of the Balanced Fund and the Equity Fund, respectively. (E)Distribution Plan: Effective November 28, 2006 the Trust discontinued its Distribution Plan (the "Plan") with respect to the Balanced Fund. Prior to November 28, 2006 the Trust had adopted the Plan with respect to the Balanced Fund in accordance with Rule 12b-1 under the Act. The Plan provided that the Balanced Fund pay a fee to UMB Distribution Services, LLC as distributor of shares of the Balanced Fund, at an annual rate not to exceed 0.25% of the Balanced Fund's average daily net assets. The fee was reimbursement for, or in anticipation of, expenses incurred for 24 GREEN CENTURY BALANCED FUND GREEN CENTURY EQUITY FUND NOTES TO FINANCIAL STATEMENTS -- (continued) distribution-related activities. For the period ended November 27, 2006, the Balanced Fund accrued and paid $42,386 to UMB Distribution Services, LLC for services provided pursuant to the Plan. (F)Index Agreement: As of November 28, 2006, the Equity Fund directly invests in the securities of the companies included in the Domini Index. The Domini Index is owned and maintained by KLD Research and Analytics, Inc. ("KLD"). For the use of the Index, KLD is paid a fee by the Adviser the greater of $50,000 or at an annual rate of 0.10% on the first $500 million of average daily net assets, 0.075% on average daily net assets on the next $500 million, and 0.05% on average daily net assets in excess of $1 billion. For the period ended January 31, 2007, Green Century accrued fees of $8,904 to KLD. NOTE 3 -- Investment Transactions The Balanced Fund's cost of purchases and proceeds from sales of securities, other than short-term securities, aggregated $8,954,016 and $10,852,114, respectively, for the six months ended January 31, 2007. For the period August 1, 2006 to November 27, 2006, additions and reductions in the Equity Fund's investment in the Domini Trust aggregated $2,071,094 and $38,413,415, respectively. On November 27, 2006, the Equity Fund withdrew its investment from the Domini Trust and realized a gain of $9,896,339. For the period November 28, 2006 to January 31, 2007, the Equity Fund's cost of purchases and proceeds from sales of securities, other than short-term securities, aggregated $38,935,695 and $708,328, respectively. NOTE 4 -- Federal Income Tax Information The tax basis of the components of distributable net earnings (deficit) at July 31, 2006 were as follows: BALANCED FUND EQUITY FUND ------------- ----------- Undistributed ordinary income............................... $ -- $ 40,536 Post-October losses......................................... (1,769) (198,044) Accumulated loss carryforwards.............................. (13,925,744) (5,173,829) Unrealized appreciation (depreciation) on investments....... 543,205 4,415,359 ------------ ----------- Distributable net deficit................................... $(13,384,308) $ (915,978) ============ =========== The Balanced and Equity Funds have accumulated capital loss carryforwards of $13,925,744 and $5,173,829 respectively, of which $4,555,514 and $0, respectively, expire in the year 2010, $9,370,230 and $3,840,474, respectively, expire in the year 2011, $0 and $394,438, respectively, expire in the year 2012 and $0 and $938,917, respectively, expire in the year 2014. To the extent that either Fund realizes future net capital gains, those gains will be offset by any unused capital loss carryforwards. The Balanced Fund and Equity Fund utilized $5,369,097 and $0, respectively, of its capital loss carryforwards during the year ended July 31, 2006. At July 31, 2006, the Equity Fund had net realized capital losses on transactions between November 1, 2005 and July 31, 2006 of $198,044, which for tax purposes are deferred and will be recognized in fiscal year 2007. The Balanced Fund had realized currency losses from transactions between November 1, 2005 and July 31, 2006 of $1,769, which for tax purposes are deferred and will be recognized in fiscal year 2007. 25 GREEN CENTURY BALANCED FUND GREEN CENTURY EQUITY FUND NOTES TO FINANCIAL STATEMENTS -- (concluded) The tax character of distributions paid during the fiscal years ended July 31, 2006 and 2005 were as follows: BALANCED FUND EQUITY FUND --------------------------- --------------------------- YEAR ENDED YEAR ENDED YEAR ENDED YEAR ENDED JULY 31, 2006 JULY 31, 2005 JULY 31, 2006 JULY 31, 2005 Ordinary income............... $89,058 $227,807 $55,690 $190,777 Long-term capital gains....... -- -- -- -- NOTE 5 -- Capital Share Transactions Capital Share transactions for the Balanced Fund and the Equity Fund were as follows: BALANCED FUND EQUITY FUND ----------------------------- ----------------------------- FOR THE SIX FOR THE FOR THE SIX FOR THE MONTHS ENDED YEAR ENDED MONTHS ENDED YEAR ENDED JANUARY 31, 2007 JULY 31, 2006 JANUARY 31, 2007 JULY 31, 2006 Shares sold.............. 135,941 370,109 194,118 127,473 Reinvestment of dividends 15,909 5,172 7,544 2,690 Shares redeemed.......... (227,437) (1,071,772) (99,458) (253,007) -------- ---------- ------- -------- (75,587) (696,491) 102,204 (122,844) ======== ========== ======= ======== NOTE 6 -- New Accounting Pronouncements In July 2006, the Financial Accounting Standards Board ("FASB") issued Interpretation No. 48, "Accounting for Uncertainty in Income Taxes an Interpretation of FASB Statement No. 109" (the "Interpretation"). The Interpretation establishes for all entities, including pass-through entities such as the Funds, 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 requires certain expanded tax disclosures. The Interpretation is to be implemented no later than July 31, 2007, and is to be applied to all open tax years as of the date of effectiveness. Management has recently begun to evaluate the application of the Interpretation to the Funds, and is not in a position at this time to estimate the significance of its impact, if any, on the Funds' financial statements. In September 2006, the Financial Accounting Standards Board issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements." The Statement defines fair value, establishes a framework for measuring fair value in generally accepted accounting principles ("GAAP"), and expands disclosures about fair value measurements. The Statement establishes a fair value hierarchy that distinguishes between (1) market participant assumptions developed based on market data obtained from sources independent of the reporting entity (observable inputs) and (2) the reporting entity's own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The Statement is effective for financial statements issued for fiscal years beginning after November 15, 2007, and is to be applied prospectively as of the beginning of the fiscal year in which this Statement is initially applied. Management has recently begun to evaluate the application of the Statement to the Funds, and is not in a position at this time to evaluate the significance of its impact, if any, on the Funds' financial statements. 26 BOARD OF TRUSTEES' CONSIDERATION OF ADVISORY AND SUBADVISORY AGREEMENTS The Board of Trustees of the Green Century Funds considered and approved three advisory and subadvisory agreements during the six months ended January 31, 2007. INVESTMENT ADVISORY AGREEMENTS WITH GREEN CENTURY CAPITAL MANAGEMENT, INC. At a meeting on August 3, 2006, the Board, including the Independent Trustees, approved an Investment Advisory Agreement between the Trust, on behalf of the Equity Fund, and Green Century Capital Management, Inc. ("Green Century" or the "Adviser",) effective November 28, 2006. The Board, including the Independent Trustees, also approved the continuance of the Investment Advisory Agreement between the Trust, on behalf of the Balanced Fund, and Green Century at a meeting on October 20, 2006. In connection with their deliberations at the meetings, and at separate executive sessions of the Independent Trustees held on the same days, the Trustees considered, among other things, information provided by Green Century regarding (1) the investment performance of the Funds, (2) expenses of the Funds and the advisory fee to be paid to Green Century for each Fund, and (3) the profitability to Green Century of its proposed advisory relationships to the Funds. The Independent Trustees were advised by independent counsel in considering these materials and the approval and continuance of the Advisory Agreements. The Trustees considered all the information provided to them by Green Century, including information provided throughout the year. In approving the Advisory Agreements, the Board, including the Independent Trustees, did not identify any single factor as determinative. Matters considered in connection with their approval of the Advisory Agreements included the following. Nature, Quality, and Extent of Services Performed. The Trustees considered the scope and quality of the services to be performed for each of the Funds by the Adviser, including the resources to be dedicated by the Adviser. With respect to the Equity Fund, these services included monitoring the Equity Fund's performance and tracking error relative to the Index; implementing the environmental policies of the Funds by voting the Equity Fund's shareholder proxies; and overall compliance oversight to be provided by the Adviser. In evaluating Green Century's capability to provide such services, the Trustees took into consideration Green Century's experience and history in providing advisory services to the Balanced Fund. The Trustees also considered the administrative services provided by the Adviser to both Funds, including the coordination of the activities of all the Funds' other service providers. With respect to the Balanced Fund, the services to be performed included the oversight and monitoring of the portfolio management and performance of the Balanced Fund; monitoring the implementation of the Balanced Fund's environmental screens; implementing the environmental policies of the Funds by voting the Balanced Fund's shareholder proxies; and overall compliance oversight provided by the Adviser. In addition, the Trustees considered the administrative services provided by the Adviser to both Funds, including the coordination of the activities of all of the Funds' other service providers. Based on its review of all of the services provided and to be provided, the Trustees concluded that the nature, quality and extent of services provided by the Adviser supported the approval of the Advisory Agreement with respect to the Equity Fund and continuance of the Advisory Agreement with respect to the Balanced Fund. The Costs of the Services to be Provided and the Profits to be Realized by the Adviser. The Trustees considered the costs of the services provided to the Funds and the profitability and fall-out benefits to the Adviser from its arrangement with the Funds. The Trustees reviewed and considered an analysis of the advisory fee and total expense ratio of each Fund, and comparative data for multiple categories of mutual funds included in and as defined by Strategic Insight's mutual fund database Simfund 2 comprising over 7,000 mutual funds. With respect to the Equity Fund, the Trustees noted that the advisory fee to be paid to Green Century and the total expense ratio for the Equity Fund were lower than the average advisory fee and total expense ratio for socially conscious equity funds and large-cap growth funds. The Trustees noted 27 that the advisory fee structure for the Equity Fund included breakpoints as assets grew. The Trustees considered that the advisory fee represented an increase of 0.05% from the management fee paid by the Domini Social Equity Trust in which the Equity Fund invested all its investable assets at the time of the meeting, but noted that pursuant to an Amended Administrative Services Agreement with Green Century, the total expense ratio of the Equity Fund would be limited to 0.95%, a decrease of 0.55% from the previous total expense ratio. With respect to the Balanced Fund, the Trustees noted that the advisory fee was higher than the average advisory fee for all balanced funds and higher than the average advisory fee for socially responsible balanced funds. The Trustees considered that Green Century had proposed a reduction in the advisory fee of 10 basis points, and that under the Amended Administrative Services Agreement approved by the Board at its meeting on August 24, 2006, the total expense ratio of the Balanced Fund was limited to 1.38%, a decrease from the 2.39% total expense ratio of the Fund in the prior fiscal year end. The Trustees also noted that the total expense ratio was lower than or equal to the average total expense ratio for any of the four categories of comparison funds included in the Simfund 2 database. Green Century provided the Trustees with information prepared by the Adviser relating to the profitability to Green Century of its proposed advisory relationships to the Funds. In that regard, the Trustees considered the subadvisory fees and the other expenses to be incurred by the Adviser in providing advisory services to the Funds. The Trustees also considered the fee received by the Adviser for providing administrative services to the Funds and the expenses incurred by the Adviser in providing those services. In considering the cost allocation methodology used by Green Century, the Trustees took into consideration that the Adviser does not provide advisory or administrative services to other mutual funds or non-mutual fund clients. The Trustees also considered Green Century's non-profit ownership structure, its cost structure and personnel needs, and its investment in shareholder advocacy to further the Funds' stated objective of promoting greater corporate environmental accountability. After reviewing the information described above, the Independent Trustees concluded that the fees proposed in the Advisory Agreements, taking into account the costs of the services provided by the Adviser and the profitability to the Adviser of its relationships with the Funds, supported the approval of the Advisory Agreement with respect to the Equity Fund and the continuance of the Advisory Agreement with respect to the Balanced Fund. With respect to fall-out benefits, the Trustees considered that neither Green Century nor any affiliate of Green Century receives any brokerage fees, soft dollar benefits, liquidity rebates from electronic communications networks or payments for order flow from the trades executed for the Funds. The Trustees noted that Green Century does benefit intangibly from its relationship with the Funds due to the Funds' reputation as the first family of no-load environmentally responsible mutual funds. Further, pursuant to the Advisory Agreements, Green Century has reserved for itself the rights to the names "Green Century Funds" and any similar names; thus, Green Century may benefit in the future from developing other funds or investment products with the Green Century brand. The Trustees concluded that the fall-out benefits to be realized by Green Century were appropriate and supported the approval of the Advisory Agreement with respect to the Equity Fund and continuance of the Advisory Agreement with respect to the Balanced Fund. Investment Performance. With respect to the Equity Fund, the Trustees considered that due to the Equity Fund's passive investment strategy, the principal concern with regard to investment performance was the extent to which the Equity Fund tracked the Domini 400 Social/SM/ Index (the "Index") and noted that Green Century stated it would monitor the subadviser's performance in tracking the Index. After considering all the factors deemed appropriate, the Trustees, including the Independent Trustees, concluded that Green Century had the resources necessary to monitor the subadviser's performance in tracking the Index. With respect to the Balanced Fund, the Trustees reviewed and considered information regarding the investment performance of the Balanced Fund and comparative data with respect to the performance of other funds designated by Lipper to have similar investment objectives as well as the Balanced Fund's performance measured against the Lipper Balanced Fund Index, a broad-based balanced fund market index. The Trustees noted that as of the period ended August 31, 2006, the Balanced Fund's one-, three-, and five-year average annual returns had significantly underperformed the Lipper Balanced Fund Index, while the Balanced Fund's ten-year average annual return had 28 outperformed the benchmark. The Trustees also considered the performance information they had been provided throughout the year. After considering all the factors deemed appropriate, the Trustees, including the Independent Trustees, concluded that the performance of the Balanced Fund supported the continuance of the Advisory Agreement with respect to the Balanced Fund. Economies of Scale. The Trustees also considered whether economies of scale could be realized by the Adviser as the Funds grew in asset size and the extent to which such economies of scale were reflected in the level of fees charged. They noted the relatively small size of each Fund and the resultant difficulty for the Adviser to achieve meaningful economies of scale. They considered that if the assets were to increase, the Funds could have the opportunity to experience economies of scale as fixed costs would become a smaller percentage of the Funds' assets and some of the Funds' service providers' fees, as a percentage of the Funds' assets, could decrease. The Trustees noted that Green Century proposed an advisory fee structure for the Equity Fund which included break-points and that the Equity Fund's advisory fee would decrease as assets increased, at the same points as the fees charged Green Century by the Fund's proposed subadviser and by KLD Research & Analytics, the firm which maintains the Index, decreased. The Trustees also concluded that economies of scale could be realized as the Funds grew and that if assets increased significantly the Trustees would have opportunities to negotiate decreases in fees with the Adviser. Based on a review of all factors deemed relevant, the Trustees, including the Independent Trustees, concluded that the Advisory Agreement with respect to the Equity Fund should be approved and that they would consider whether to renew it after an initial two-year period and then annually thereafter, and the Advisory Agreement with respect to the Balanced Fund should be continued and that they would consider whether to renew it after a one-year period. INVESTMENT SUBADVISORY AGREEMENT WITH MELLON EQUITY ASSOCIATES, LLP At an in-person meeting on August 24, 2006, the Board of Trustees of the Equity Fund, including a majority of the Independent Trustees, considered the approval of the subadvisory agreement between the Trust, on behalf of the Equity Fund, Green Century, and Mellon Equity Associates LLP ("Mellon Equity") (the "Subadvisory Agreement"), with an effective date of November 28, 2006. In advance of the meeting, the Independent Trustees submitted to Mellon Equity a written request for information in connection with their consideration of the Subadvisory Agreement. The Trustees received, reviewed and considered the following, among other things: (1) A memorandum from counsel to the Independent Trustees setting forth the Board's fiduciary duties under the 1940 Act and Massachusetts law and the factors the Board should consider in its evaluation of the Subadvisory Agreement. (2) Reports from and presentations by Green Century regarding the process by which the firm decided to propose Mellon Equity as the subadviser of the Equity Fund. (3) Reports from and presentations by Mellon Equity that described (a) the nature, extent and quality of the services proposed to be provided by Mellon Equity to the Equity Fund, including the experience and qualifications of the personnel providing those services, Mellon Equity's ownership structure, clients and Mellon Equity's investment philosophies and processes; (b) the fees and other amounts proposed to be paid to Mellon Equity under the Subadvisory Agreement with respect to the Equity Fund, including information as to the fees charged and services provided to other Mellon Equity clients and a comparison of the Equity Fund's proposed subadvisory fee to those of other mutual funds; (c) the expected costs and profits of Mellon Equity related to its proposed services to the Equity Fund; (d) Mellon Equity's performance in managing similar accounts; (e) Mellon Equity's compliance program and procedures and any regulatory issues; (f) Mellon Equity's brokerage practices, including soft dollar practices; and (g) Mellon Equity's code of ethics. The Trustees, including a majority of the Independent Trustees, concluded that Mellon Equity had the capabilities, resources, and personnel necessary to advise the Equity Fund. The Board further concluded that, based on the services proposed to be provided pursuant to the Subadvisory Agreement and the expenses Mellon Equity estimated it will incur in performing these services, the proposed compensation for Mellon Equity was fair and reasonable. 29 In reaching their determination to approve the Subadvisory Agreement, the Trustees considered a variety of factors they believed relevant and balanced a number of considerations. In their deliberations, the Trustees did not identify any particular information or factor that was all-important or controlling. The primary factors and the conclusions are described below. Nature, Quality, and Extent of Services Performed. The Trustees noted that under the terms of the Subadvisory Agreement, Mellon Equity will provide the day-to-day portfolio management of the Equity Fund, making purchases and sales of portfolio securities consistent with the Equity Fund's investment objective and policies. The Trustees reviewed the terms of the Subadvisory Agreement and concluded that the terms of the Subadvisory Agreement were reasonable and fair. The Trustees considered the scope of the services to be provided by Mellon Equity under the Subadvisory Agreement and the quality of services provided by Mellon Equity to its existing clients. They reviewed the capabilities and experience of Mellon Equity in managing mutual funds that track an established index. They considered how Mellon Equity proposed to manage the Equity Fund, focusing in particular on Mellon Equity's handling of daily inflows and outflows, transaction costs, tracking error, and the expected portfolio turnover rates for the Equity Fund. The Trustees considered the professional experience, tenure, and qualifications of the portfolio management team proposed for the Equity Fund and the other senior personnel at Mellon Equity. They considered in particular those individuals' experience in managing registered investment companies. The Trustees also considered the portfolio management team's experience in passive management. The Trustees also considered Mellon Equity's compliance policies and procedures and compliance record, and interviewed Mellon Equity's Chief Compliance Officer. Based on their review of all the services proposed to be provided and their analysis of Mellon Equity's ability to provide those services, the Trustees concluded that Mellon Equity had the capabilities, resources and personnel necessary to provide subadvisory services to the Equity Fund under the Subadvisory Agreement. They also concluded that they were satisfied with the nature, quality and extent of services expected to be provided by Mellon Equity under the Subadvisory Agreement. Costs of Services Provided and Profitability. The Trustees considered the proposed subadvisory fees to be paid by Green Century to Mellon Equity. The Trustees noted that under the Subadvisory Agreement, Mellon Equity would receive 0.08% of the value of the average daily net assets of the Equity Fund up to $100 million, 0.05% of the value of the average daily net assets of the Equity Fund from $100 million to $500 million, 0.02% of the value of the average daily net assets of the Equity Fund from $500 million to $1 billion, and 0.01% of the value of the average daily net assets of the Equity Fund in excess of $1 billion, subject to a minimum fee of $50,000 per year. The Trustees reviewed and considered an analysis of the subadvisory fee to be paid by the Equity Fund and comparative data for multiple categories of mutual funds included in and as defined by Strategic Insight's mutual fund database Simfund 2 comprising over 7,000 mutual funds. The Trustees noted that, based on the information provided, the proposed subadvisory fees to be paid to Mellon Equity were lower than the average subadvisory fees paid by large-cap growth funds and socially conscious equity funds. The Trustees noted that the subadvisory fee to be paid at current asset levels was higher than the average subadvisory fee paid by equity index funds, but that this was due to the imposition of the yearly minimum fee and the fee would decrease in terms of basis points as assets increased. The Trustees also noted that the proposed subadvisory fees would be paid by Green Century, and would not be in addition to the advisory fees paid to Green Century by shareholders. Green Century provided the Trustees with information prepared by Mellon Equity relating to the prospective profitability of the Subadvisory Agreement to Mellon Equity. In that regard, the Trustees considered the proposed subadvisory fees and the financial resources Mellon Equity plans to dedicate and the other expenses Mellon Equity anticipates it will incur in providing subadvisory services to the Equity Fund. In considering the cost allocation methodology used by Mellon Equity, the Trustees noted that Mellon Equity allocated its costs to all its clients equally. 30 After reviewing the information described above, the Trustees concluded that the fees proposed in the Subadvisory Agreement, taking into account the costs of the services proposed to be provided by Mellon Equity, supported the approval of the Subadvisory Agreement. The Trustees also concluded that the fees proposed in the Subadvisory Agreement were fair and reasonable in light of the usual and customary charges made by others for services of the same nature and quality. Other Benefits. The Trustees evaluated potential other benefits Mellon Equity may realize from its relationship with the Equity Fund. The Trustees considered the brokerage practices of Mellon Equity, including Mellon Equity's policy that it does not execute transactions for client portfolios through any affiliated broker/dealer and thus no benefit would be realized by Mellon Equity through transactions with affiliated brokers. The Trustees also considered that Mellon Equity does not use trades for index portfolios for the generation of soft dollars, nor does Mellon Equity receive liquidity rebates or payment for order flow from electronic communications networks associated with Equity Fund trades. The Trustees also considered the reputational and other advantages Mellon Equity may gain from its relationship with the Equity Fund. The Trustees concluded that the benefits expected to be received by Mellon Equity were reasonable in the context of the relationship between Mellon Equity and the Equity Fund, and supported the approval of the Subadvisory Agreement. Investment Performance. The Trustees reviewed and considered information regarding the investment performance of accounts managed by Mellon Equity in a passive investment style tracking an established market index. After considering all the factors deemed appropriate, the Trustees concluded that Mellon Equity's experience and performance in passive management supported the approval of the Subadvisory Agreement. Economies of Scale. The Trustees also considered whether economies of scale would be realized by Mellon Equity as the Equity Fund grew in asset size and the extent to which such economies of scale might be reflected in the proposed fee schedule. They noted the relatively small size of the Equity Fund and considered that if the assets were to increase, Mellon Equity could have the opportunity to experience economies of scale. They also noted that pursuant to the Subadvisory Agreement, the subadvisory fees proposed to be paid to Mellon Equity by Green Century include breakpoints at $100 million, $500 million, and $1 billion. The Trustees concluded that economies of scale could be realized as the Fund grew, and that the fee schedule as proposed was appropriate, and supported the approval of the Subadvisory Agreement. Based on the foregoing considerations, the Board, including a majority of the Independent Trustees, determined that the terms of the Subadvisory Agreement were reasonable, fair, and in the best interests of the Equity Fund and its shareholders and also concluded that the proposed fees are fair and reasonable. 31 Semi-Annual Report INVESTMENT ADVISER AND ADMINISTRATOR Green Century Capital Management, Inc. 114 State Street Boston, MA 02109 1-800-93-GREEN www.greencentury.com email: info@greencentury.com INVESTMENT SUBADVISER (Balanced Fund) Trillium Asset Management Corporation 711 Atlantic Avenue Boston, MA 02111 INVESTMENT SUBADVISER (Equity Fund) Mellon Equity Associates, LLP 500 Grant Street Suite 4200 Pittsburgh, PA 15258 COUNSEL TO INDEPENDENT TRUSTEES OF THE FUNDS Debevoise & Plimpton 555 13th Street, N.W. Washington, DC 20004 SUBADMINISTRATOR and DISTRIBUTOR UMB Fund Services, Inc. (Subadministrator) UMB Distribution Services, LLC (Distributor) 803 West Michigan Street, Suite A Milwaukee, WI 53233 CUSTODIAN Investors Bank & Trust Company 200 Clarendon Street Boston, MA 02116 TRANSFER AGENT Unified Fund Services, Inc. 431 North Pennsylvania Street Indianapolis, IN 46204-1806 INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM KPMG LLP 99 High Street Boston, MA 02110 [LOGO] January 31, 2007 Balanced Fund - -------------------------------------------------------------------------------- Equity Fund [LOGO] GREEN CENTURY FUNDS An investment for your future. Printed on recycled paper with soy-based ink. Item 2. Code of Ethics Not applicable to semi-annual reports. Item 3. Audit Committee Financial Expert Not applicable to semi-annual reports. Item 4. Principal Accountant Fees and Services Not applicable to semi-annual reports. Item 5. Audit Committee of Listed Registrants Not applicable. Item 6. Schedule of Investments Included as part of the report to shareholders filed under item 1 of this Form N-CSR 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 were no material changes to the procedures by which shareholders may recommend nominees to the registrant's Board of Trustees. Item 11. Controls and Procedures (a) Based on an evaluation of the disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended, the "Disclosure Controls") as of a date within 90 days of the filing date (the "Filing Date") of this Form N-CSR (the "Report"), the registrant's principal executive officer and principal financial officer have concluded that the Disclosure Controls are effectively designed to ensure that information that is required to be disclosed by the registrant in the Report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms, including ensuring that information required to be disclosed in the Report is accumulated and communicated to the registrant's management, including the registrant's principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosures. (b) There were no changes in the registrant's internal controls over financial reporting (as defined in Rule 30 a-3(d) under the Investment Company Act of 1940) that occurred during the second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 12. Exhibits (a) (1) Not applicable. (2) Certifications for each principal executive and principal financial officer as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended, (17 CFR 270.30a-2(a)) are filed herewith. (b) Certifications required by Rule 30a-2 (b) under the Investment Company Act of 1940, as amended, (17 CFR 270.30a-2 (b)) are filed herewith. 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. Green Century Funds /s/ Kristina A. Curtis - ------------------------------------ Kristina A. Curtis President April 10, 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. /s/ Kristina A. Curtis - ------------------------------------ Kristina A. Curtis President and Principal Executive Officer April 10, 2007 /s/ Bernadette L. Buck - ------------------------------------ Bernadette L. Buck Treasurer and Principal Financial Officer April 10, 2007