<PAGE> 1
VAN KAMPEN HIGH YIELD FUND
SUPPLEMENT DATED JUNE 16, 1999 TO THE
PROSPECTUS DATED OCTOBER 28, 1998,
AS PREVIOUSLY SUPPLEMENTED ON MAY 3, 1999
-------------------------
This section of the Prospectus entitled "INVESTMENT ADVISORY SERVICES-
PORTFOLIO MANAGEMENT" is amended with the following:
PORTFOLIO MANAGEMENT. The Fund is managed by a management team led by Robert J.
Hickey, a Vice President of the Adviser. Mr. Hickey joined the Adviser in 1989
and became Assistant Vice President in January 1993. Mr. Hickey has been a Vice
President of the Adviser and Van Kampen Asset Management Inc. ("Asset
Management") since June 1995. Peter Ehret has been working for the Adviser since
July 1992, and became an Assistant Vice President of the Adviser in January 1999
and Asset Management in 1994 and became a Vice President of the Adviser and
Asset Management in February 1999.
<PAGE> 2
VAN KAMPEN STRATEGIC INCOME FUND
SUPPLEMENT DATED JUNE 16, 1999 TO THE
PROSPECTUS DATED OCTOBER 28, 1998,
AS PREVIOUSLY SUPPLEMENTED ON MAY 3, 1999
-------------------------
This section of the Prospectus entitled "INVESTMENT ADVISORY SERVICES-
PORTFOLIO MANAGEMENT" is amended with the following:
PORTFOLIO MANAGEMENT. The Fund is managed by a management team led by Peter W.
Hegel, an Executive Vice President of the Adviser and Van Kampen Asset
Management Inc. ("Asset Management"). Mr. Hegel has been employed by the Adviser
since April 1983 and with Asset Management since June 1995. Robert J. Hickey, a
Vice President of the Adviser and Asset Management has been primarily
responsible for the day-to-day management of the Fund's portfolio since January
1995. Mr. Hickey joined the Adviser in 1989 and became Assistant Vice President
in January 1993. Mr. Hickey has been a Vice President of the Adviser and Asset
Management since June 1995. Thomas J. Slefinger, Senior Vice President of the
Adviser and Asset Management, and has been employed by the Adviser since July
1989 and Asset Management since June 1995. Mr. Slefinger was previously a First
Vice President with the Adviser and Asset Management. John R. Reynoldson has
been Senior Vice President of Asset Management since July 1991 and Senior Vice
President of the Adviser since June 1995. Mr. Reynoldson was previously a Vice
President with Asset Management. Kelly Gilbert joined the Adviser and Asset
Management in September 1995 and became an Assistant Vice President in December
1997. Ms. Gilbert has been a Vice President of the Adviser and Asset Management
since February 1999. Prior to September 1995, Ms. Gilbert was a Corporate Bond
Trader at ABN AMRO, N.A., a foreign owned bank.
