SUPPLEMENTED DATED MARCH 7, 2005 TO THE STATEMENT OF ADDITIONAL INFORMATION DATED DECEMBER 30, 2004 VAN KAMPEN HIGH YIELD FUND, AS PREVIOUSLY SUPPLEMENTED ON FEBRUARY 2, 2005 The Statement of Additional Information is hereby supplemented as follows: The following is added after the first paragraph in the section entitled "INVESTMENT OBJECTIVE, PRINCIPAL INVESTMENT STRATEGIES AND RISKS -- SECURITIES OF FOREIGN ISSUERS:" FOREIGN CURRENCY EXCHANGE RISKS. To the extent the Fund invests in securities denominated or quoted in currencies other than the U.S. dollar, the Fund will be affected by changes in foreign currency exchange rates (and exchange control regulations) which affect the value of investments in the Fund and the income and appreciation or depreciation of the investments. Changes in foreign currency exchange ratios relative to the U.S. dollar will affect the U.S. dollar value of the Fund's assets denominated in that currency and the Fund's yield on such assets. In addition, the Fund will incur costs in connection with conversions between various currencies. The Fund's foreign currency exchange transactions may be conducted on a spot basis (that is, cash basis) at the spot rate for purchasing or selling currency prevailing in the foreign currency exchange market. The Fund also may enter into contracts with banks, brokers or dealers to purchase or sell securities or foreign currencies at a future date ("forward contracts"). A foreign currency forward contract is a negotiated agreement between the contracting parties to exchange a specified amount of currency at a specified future time at a specified rate. The rate can be higher or lower than the spot rate between the currencies that are the subject of the contract. The Fund may attempt to protect against adverse changes in the value of the U.S. dollar in relation to a foreign currency by entering into a forward contract for the purchase or sale of the amount of foreign currency invested or to be invested or by buying or selling a foreign currency option or futures contract for such amount. Such strategies may be employed before the Fund purchases a foreign security traded in the currency which the Fund anticipates acquiring or between the date the foreign security is purchased or sold and the date on which payment therefor is made or received. Seeking to protect against a change in the value of a foreign currency in the foregoing manner does not eliminate Fluctuations in the prices of portfolio securities or prevent losses if the prices of such securities decline. Furthermore, such transactions reduce or preclude the opportunity for gain if the value of the currency should move in the direction opposite to the position taken. Unanticipated changes in currency prices may result in poorer overall performance for the Fund than if it had not entered into such contracts. The Fund is not required to enter into such transactions with regard to its foreign currency-denominated securities. It also should be realized that this method of protecting the value of portfolio securities against a decline in the value of a currency does not eliminate fluctuations in the underlying prices of the securities. It simply establishes a rate of exchange which one can achieve at some future point in time. In addition, although such contracts tend to minimize the risk of loss due to a decline in the value of the hedged currency, at the same time, they tend to limit any potential gain which might result should the value of such currency increase. The Fund may cross-hedge currencies by entering into a transaction to purchase or sell one or more currencies that are expected to decline in value relative to other currencies to which a portfolio has or expects to have portfolio exposure. The Fund may also engage in proxy hedging, which is defined as entering into positions in one currency to hedge investments denominated in another currency, where two currencies are economically linked. The Fund's entry into forward contracts, as well as any use of proxy or cross hedging techniques, will generally require the Fund to segregate cash and/or liquid securities at least equal to the Fund's obligations throughout the duration of the contract. The Fund may combine forward contracts with investments in securities denominated in other currencies to achieve desired security and currency exposures. Such combinations are generally referred to as synthetic securities. For example, in lieu of purchasing a foreign bond, the Fund may purchase a U.S. dollar-denominated security and at the same time enter into a forward contract to exchange U.S. dollars for the contract's underlying currency at a future date. By matching the amount of U.S. dollars to be exchanged with the anticipated value of the U.S. dollar-denominated security, the Fund may be able to lock in the foreign currency value of the security and adopt a synthetic position reflecting the credit quality of the U.S. dollar- denominated security. To the extent required by the rules and regulations of the SEC, the Fund will segregate cash and/or liquid securities in an amount at least equal to the value of the Fund's total assets committed to the consummation of forward foreign currency exchange contracts. If the value of the segregated assets declines, additional cash and/or liquid securities will be segregated on a daily basis so that the value of the segregated assets will be at least equal to the amount of the Fund's commitments with respect to such contracts. PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE HYFSPT305