SUPPLEMENT DATED OCTOBER 11, 2006 TO THE CURRENT PROSPECTUSES OF ING CORPORATE LEADERS TRUST, ING EQUITY TRUST, ING FUNDS TRUST, ING INVESTMENT FUNDS, INC., ING INVESTORS TRUST (TO ONLY ING AMERICAN FUNDS PORTFOLIOS, ING LIFESTYLE PORTFOLIOS, ING MARKETPRO PORTFOLIO, ING MARKETSTYLE PORTFOLIOS, ING DISCIPLINED SMALL CAP VALUE PORTFOLIO, ING EQUITIESPLUS PORTFOLIO, ING GLOBAL REAL ESTATE PORTFOLIO AND ING VP INDEX PLUS INTERNATIONAL EQUITY PORTFOLIO), ING MAYFLOWER TRUST, ING MUTUAL FUNDS, ING PRIME RATE TRUST, ING SENIOR INCOME FUND, ING VARIABLE INSURANCE TRUST, ING VARIABLE PRODUCTS TRUST, AND ING VP NATURAL RESOURCES TRUST (THE "REGISTRANTS") The Prospectuses for the Registrants are hereby supplemented with the following information relating to "Information Regarding Trading of ING's U.S. Mutual Funds." INFORMATION REGARDING TRADING OF ING'S U.S. MUTUAL FUNDS As discussed in earlier supplements, ING Investments, LLC ("Investments"), the adviser to the ING Funds, has reported to the Boards of Directors/Trustees (the "Boards") of the ING Funds that, like many U.S. financial services companies, Investments and certain of its U.S. affiliates have received informal and formal requests for information since September 2003 from various governmental and self-regulatory agencies in connection with investigations related to mutual funds and variable insurance products. Investments has advised the Boards that it and its affiliates have cooperated fully with each request. In addition to responding to regulatory and governmental requests, Investments reported that management of U.S. affiliates of ING Groep N.V., including Investments (collectively, "ING"), on their own initiative, have conducted, through independent special counsel and a national accounting firm, an extensive internal review of trading in ING insurance, retirement, and mutual fund products. The goal of this review was to identify any instances of inappropriate trading in those products by third parties or by ING investment professionals and other ING personnel. ING's internal review related to mutual fund trading is now substantially completed. ING has reported that, of the millions of customer relationships that ING maintains, the internal review identified several isolated arrangements allowing third parties to engage in frequent trading of mutual funds within ING's variable insurance and mutual fund products, and identified other circumstances where frequent trading occurred, despite measures taken by ING intended to combat market timing. ING further reported that each of these arrangements has been terminated and fully disclosed to regulators. The results of the internal review were also reported to the independent members of the Boards. Investments has advised the Boards that most of the identified arrangements were initiated prior to ING's acquisition of the businesses in question in the U.S. Investments further reported that the companies in question did not receive special benefits in return for any of these arrangements, which have all been terminated. Based on the internal review, Investments has advised the Boards that the identified arrangements do not represent a systemic problem in any of the companies that were involved. In September 2005, ING Funds Distributor, LLC ("IFD"), the distributor of certain ING Funds, settled an administrative proceeding with the NASD regarding three arrangements, dating from 1995, 1996 and 1998, under which the administrator to the then-Pilgrim Funds, which subsequently became part of the ING Funds, entered into formal and informal arrangements that permitted frequent trading. Under the terms of the Letter of Acceptance, Waiver and Consent ("AWC") with the NASD, under which IFD neither admitted nor denied the allegations or findings, IFD consented to the following sanctions: (i) a censure; (ii) a fine of $1.5 million; (iii) restitution of approximately $1.44 million to certain ING Funds for losses attributable to excessive trading described in the AWC; and (iv) agreement to make certification to NASD regarding the review and establishment of certain procedures. In addition to the arrangements discussed above, Investments reported to the Boards that, at this time, these instances include the following, in addition to the arrangements subject to the AWC discussed above: - Aeltus Investment Management, Inc. (a predecessor entity to ING Investment Management Co.) identified two investment professionals who engaged in extensive frequent trading in certain ING Funds. One was subsequently terminated for cause and incurred substantial financial penalties in connection with this conduct and the second has been disciplined. - ReliaStar Life Insurance Company ("ReliaStar") entered into agreements seven years ago permitting the owner of policies issued by the insurer to engage in frequent trading and to submit orders until 4pm Central Time. In 2001 ReliaStar also entered into a selling agreement with a broker-dealer that engaged in frequent trading. Employees of ING affiliates were terminated and/or disciplined in connection with these matters. - In 1998, Golden American Life Insurance Company entered into arrangements permitting a broker-dealer to frequently trade up to certain specific limits in a fund available in an ING variable annuity product. No employee responsible for this arrangement remains at the company. For additional information regarding these matters, you may consult the Form 8-K and Form 8-K/A for each of four life insurance companies, ING USA Annuity and Life Insurance Company, ING Life Insurance and Annuity Company, ING Insurance Company of America, and ReliaStar Life Insurance Company of New York, each filed with the Securities and Exchange Commission (the "SEC") on October 29, 2004 and September 8, 2004. These Forms 8-K and Forms 8-K/A can be accessed through the SEC's Web site at http://www.sec.gov. Despite the extensive internal review conducted 2 through independent special counsel and a national accounting firm, there can be no assurance that the instances of inappropriate trading reported to the Boards are the only instances of such trading respecting the ING Funds. Investments reported to the Boards that ING is committed to conducting its business with the highest standards of ethical conduct with zero tolerance for noncompliance. Accordingly, Investments advised the Boards that ING management was disappointed that its voluntary internal review identified these situations. Viewed in the context of the breadth and magnitude of its placecountry-regionU.S. business as a whole, ING management does not believe that ING's acquired companies had systemic ethical or compliance issues in these areas. Nonetheless, Investments reported that given ING's refusal to tolerate any lapses, it has taken the steps noted below, and will continue to seek opportunities to further strengthen the internal controls of its affiliates. - ING has agreed with the ING Funds to indemnify and hold harmless the ING Funds from all damages resulting from wrongful conduct by ING or its employees or from ING's internal investigation, any investigations conducted by any governmental or self-regulatory agencies, litigation or other formal proceedings, including any proceedings by the SEC. Investments reported to the Boards that ING management believes that the total amount of any indemnification obligations will not be material to ING or its placecountry-region U.S. business. - ING updated its Code of Conduct for employees reinforcing its employees' obligation to conduct personal trading activity consistent with the law, disclosed limits, and other requirements. - The ING Funds, upon a recommendation from ING, updated their respective Codes of Ethics applicable to investment professionals with ING entities and certain other fund personnel, requiring such personnel to pre-clear any purchases or sales of ING Funds that are not systematic in nature (i.e., dividend reinvestment), and imposing minimum holding periods for shares of ING Funds. - ING instituted excessive trading policies for all customers in its variable insurance and retirement products and for shareholders of the ING Funds sold to the public through financial intermediaries. ING does not make exceptions to these policies. - ING reorganized and expanded its U.S. Compliance Department, and created an Enterprise Compliance team to enhance controls and consistency in regulatory compliance. OTHER REGULATORY MATTERS. The New York Attorney General (the "NYAG") and other federal and state regulators are also conducting broad inquiries and investigations involving the insurance industry. These initiatives currently focus on, among other things, compensation and other sales incentives; potential conflicts of interest; potential anti-competitive activity; reinsurance; marketing practices (including suitability); specific product types (including group annuities and indexed annuities); fund selection for investment products and brokerage sales; and disclosure. It is likely that the scope of these industry investigations will further broaden before they conclude. ING has received formal and informal requests in connection with such investigations, and is cooperating fully with each request. In connection with one such investigation, affiliates of Investments were named in a petition for relief and cease and desist order filed by the New Hampshire Bureau of Securities Regulation (the "NH Bureau") 3 concerning their administration of the New Hampshire state employees deferred compensation plan. On October 10, 2006, an affiliate of Investments entered into an assurance of discontinuance with the NYAG (the "NYAG Agreement") regarding the endorsement of its products by the New York State United Teachers Union Member Benefits Trust ("NYSUT") and the sale of their products to NYSUT members. Under the terms of the NYAG Agreement, the affiliate of Investments, without admitting or denying the NYAG's findings, will distribute $30 million to NYSUT members, and/or former NYSUT members, who participated in the NYSUT-endorsed products at any point between January 1, 2001 and June 30, 2006. The affiliate also agreed with the NYAG's office to develop a one-page disclosure that will further improve transparency and disclosure regarding retirement product fees (the "One-Page Disclosure"). Pursuant to the terms of the NYAG Agreement, the affiliate has agreed for a five year period to provide its retirement product customers with the One-Page Disclosure. In addition, on the same date, affiliates of Investments entered into a consent agreement with the NH Bureau (the "NH Agreement") to resolve the petition for relief and cease and desist order. Under the terms of the NH Agreement, these affiliates of Investments, without admitting or denying the NH Bureau's claims, have agreed to pay $3 million to resolve the matter, and for a five year period to provide their retirement product customers with the One-Page Disclosure described above. Other federal and state regulators could initiate similar actions in this or other areas of ING's businesses. These regulatory initiatives may result in new legislation and regulation that could significantly affect the financial services industry, including businesses in which ING is engaged. In light of these and other developments, ING continuously reviews whether modifications to its business practices are appropriate. At this time, in light of the current regulatory factors, ING country-regionplaceU.S. is actively engaged in reviewing whether any modifications in our practices are appropriate for the future. There can be no assurance that these matters, or the adverse publicity associated with them, will not result in increased fund redemptions, reduced sale of fund shares, or other adverse consequences to ING Funds. 4 This supplement supersedes the supplement dated February 28, 2006 with respect to the ING Global Equity and International Equity Funds; the supplement dated June 28, 2006 with respect to ING Investors Trust (to only ING American Funds Portfolios, ING Lifestyle Portfolios, ING MarketPro Portfolio, ING MarketStyle Portfolios, ING Disciplined Small Cap Value Portfolio, ING EquitiesPlus Portfolio, ING Global Real Estate Portfolio and ING VP Index Plus International Equity Portfolio) ING Variable Insurance Trust, ING Variable Products Trust, ING VP Natural Resources Trust; the supplement dated June 30, 2006 with respect to ING Senior Income Fund, ING Prime Rate Trust; the supplement date July 29, 2006 with respect to the ING Fixed-Income Funds and ING Institutional Prime Money Market Fund; and the supplement dated September 30, 2006 with respect to ING Domestic Equity Funds PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE 5