Oppenheimer Convertible Securities Fund

            Statement of Additional Information Supplement dated April 29, 2008



This supplement amends the Statement of Additional Information of Oppenheimer Convertible
Securities Fund (the "Fund") dated April 29, 2008. The Statement of Additional Information
is amended as follows:

1.    The first paragraph following the list of Funds that are overseen by the Board in the
   section titled "How the Fund Is Managed" is deleted in its entirety and is replaced by
   the following::

     Present or former officers, directors, trustees and employees (and their
     immediate family members) of the Fund, the Manager and its affiliates, and
     retirement plans established by them for their employees are permitted to
     purchase Class A shares of the Fund and the other Oppenheimer funds at net asset
     value without a sales charge. The sales charge on Class A shares is waived for
     that group because of the reduced sales efforts realized by the Distributor.
     Present or former officers, directors, trustees and employees (and their eligible
     family members) of the Fund, the Manager and its affiliates, its parent company
     and the subsidiaries of its parent company, and retirement plans established for
     the benefit of such individuals, are also permitted to purchase Class Y shares of
     the Oppenheimer funds that offer Class Y shares.

2.    Effective June 1st, the last paragraph of the section "Dividends, Capital Gains and
   Taxes-Dividends and Distributions" is deleted in its entirety and replaced by the
   following:

     If a dividend check or a check representing an automatic withdrawal payment is
     returned to the Transfer Agent by the Postal Service as undeliverable, it will be
     reinvested in shares of the Fund. Returned checks for the proceeds of other types
     of redemptions will be invested in shares of Oppenheimer Money Market Fund, Inc.
     Reinvestment will be made as promptly as possible after the return of such checks
     to the Transfer Agent. Unclaimed accounts may be subject to state escheatment
     laws, and the Fund and the Transfer Agent will not be liable to shareholders or
     their representatives for compliance with those laws in good faith.

3.    Effective April 29th, the first paragraph of section VII "Sales Charge Waivers on
   Purchases of Class M Shares of Oppenheimer Convertible Securities Fund" in the Appendix
   titled "OppenheimerFunds Special Sales Charge Arrangements and Waivers" is deleted in
   its entirety and replaced by the following:

     Oppenheimer Convertible Securities Fund (referred to as the "Fund" in this
     section) may sell Class M shares at net asset value without any initial sales
     charge to the classes of current Class M shareholders listed below who, prior to
     March 11, 1996, owned shares of the Fund's then-existing Class A and were
     permitted to purchase those shares at net asset value without a sales charge:







April 29, 2008                                                              PX0345.011