OPPENHEIMER DEVELOPING MARKETS FUND
Supplement dated September 25, 1998 to the
Statement of Additional Information dated December 19, 1997
The Statement of Additional Information is revised as follows:
1. The supplement dated May 15, 1998 is replaced by this supplement.
2. The following is added after the section entitled "Foreign Securities - Risks
of Foreign Investing on page 4:
Risks of Conversion to Euro. On January 1, 1999, eleven
countries in the European Monetary Union will adopt the euro as their
official currency. However, their current currencies (for example, the
franc, the mark, and the lire) will also continue in use until January 1,
2002. After that date, it is expected that only the euro will be used in
those countries. A common currency is expected to confer some benefits in
those markets, by consolidating the government debt market for those
countries and reducing some currency risks and costs. But the conversion
to the new currency will affect the Fund operationally and also has
potential risks, some of which are listed below. Among other things, the
conversion will affect:
issuers in which the Fund invests, because of changes in the competitive
environment from a consolidated currency market and greater operational costs
from converting to the new currency. This might depress stock values.
vendors the Fund depends on to carry out its business, such as its Custodian
(which holds the foreign securities the Fund buys), the Manager (which must
price the Fund's investments to deal with the conversion to the euro) and
brokers, foreign markets and securities depositories. If they are not prepared,
there could be delays in settlements and additional costs to the Fund.
exchange contracts and derivatives that are outstanding during the transition to
the euro. The lack of currency rate calculations between the affected currencies
and the need to update the Fund's contracts could pose extra costs to the Fund.
The Manager is upgrading (at its expense) its computer and
bookkeeping systems to deal with the conversion. The Fund's Custodian has
advised the Manager of its plans to deal with the conversion, including
how it will update its record keeping systems and handle the
redenomination of outstanding foreign debt. The Fund's portfolio manager
will also monitor the effects of the conversion on the issuers in which
the Fund invests. The possible effect of these factors on the Fund's
investments cannot be determined with certainty at this time, but they may
reduce the value of some of the Fund's holdings and increase its
operational costs.
(continued)
3. The third sentence of the fourth paragraph in the section entitled AHow To
Exchange Shares@ on page 48 is revised to read as follows:
However, if you redeem Class A shares of the Fund that were acquired by
exchange of Class A shares of other Oppenheimer funds purchased subject to
a Class A contingent deferred sales charge within 18 months of the end of
the calendar month of the purchase of the exchanged Class A shares, the
Class A contingent deferred sales charge is imposed on the redeemed shares
(see "Class A Contingent Deferred Sales Charge" in the Prospectus). (A
different holding period may apply to shares purchased prior to June 1,
1998).
September 25, 1998 PX0785.002
