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AIM HIGH YIELD FUND II
AIM LIMITED MATURITY TREASURY FUND
(SERIES PORTFOLIOS OF AIM INVESTMENT SECURITIES FUNDS)
Supplement dated January 24, 2000
To the Statement of Additional Information dated November 29, 1999,
The following paragraph replaces in its entirety the third paragraph
appearing under the heading "PERFORMANCE INFORMATION--HISTORICAL PORTFOLIO
RESULTS" on page 4 of the Statement of Additional Information.
"High Yield may participate in the initial public offering ("IPO")
market, and a significant portion of the Fund's returns may be
attributable to its investment in IPOs. Investments in IPOs could have a
magnified impact on a fund with a small asset base. There is no guarantee
that as a fund's assets grow, it will continue to experience substantially
similar performance by investing in IPOs."
