<PAGE>
Deutsche Asset Management
BT Pyramid Mutual Funds
PreservationPlus - Institutional Class and Institutional Service Class
Supplement dated September 8, 2000 (Replacing Supplement dated June 14, 2000) to
Prospectus dated January 31, 2000
The following supplements the "Total Returns, After Fees and Expenses" section
and the "Financial Highlights" table in the Fund's prospectuses:
Total returns for the Fund assume that an investor did not pay a redemption fee
at the end of the periods shown.
The following sentences are hereby omitted from the "Who Should Consider
Investing in the Fund" and "Buying and Selling Fund Shares" sections of the
Fund's Institutional Class prospectus:
The shares are available to employee benefit plans whose initial investment
equals or exceeds $25 million. Shares are also available to employee benefit
plans which invest in the Fund through an omnibus account or similar
arrangement, if that omnibus account or similar arrangement makes an initial
investment in the Fund of at least $25 million.
Please Retain This Supplement for Future Reference
SUPPPLUS (9/00)
CUSIPs:
055847818
055847826
A Member of the
Deutsche Bank Group [/]
