<PAGE>
<PAGE>
SALOMON BROTHERS INVESTMENT SERIES
7 WORLD TRADE CENTER
NEW YORK, NEW YORK 10048
(800) 347-6028
SUPPLEMENT DATED OCTOBER 10, 1997
TO PROSPECTUS DATED APRIL 29, 1997
The following information supplements and should be read in conjunction with the
section of the current Prospectus for Salomon Brothers Investment Series (the
'Series') entitled 'Management:'
'On September 24, 1997, Travelers Group ('Travelers') and Salomon Inc
('Salomon'), the ultimate parent company of Salomon Brothers Asset
Management Inc ('SBAM'), Salomon Brothers Asset Management Limited ('SBAM
Ltd.') and Salomon Brothers Asset Management Asia Pacific Limited ('SBAM
AP'), announced their agreement to merge Salomon with and into Smith Barney
Holdings Inc., a subsidiary of Travelers, to form a new company expected to
be called Salomon Smith Barney Holdings Inc. (the 'Transaction'). Travelers
is a diversified financial services company engaged in the investment
services, asset management, consumer finance and life and property casualty
insurance services.
The Transaction is expected to be completed by November 30, 1997, subject
to a number of conditions, including the receipt of U.S. and foreign
regulatory approvals and the approval of Salomon stockholders. Upon
consummation of the Transaction, Travelers will become the ultimate parent
of SBAM, SBAM Ltd. and SBAM AP, which will continue to serve as the
investment adviser, and subadvisers, respectively, to the Series.'
<PAGE>
<PAGE>
SALOMON BROTHERS INVESTMENT SERIES
7 WORLD TRADE CENTER
NEW YORK, NEW YORK 10048
(800) 347-6028
SUPPLEMENT DATED OCTOBER 10, 1997
TO STATEMENT OF ADDITIONAL INFORMATION DATED APRIL 29, 1997
The following information supplements and should be read in conjunction with the
section of the current Statement of Additional Information for Salomon Brothers
Investment Series (the 'Series') entitled 'Investment Manager:'
'On September 24, 1997, Travelers Group ('Travelers') and Salomon Inc
('Salomon'), the ultimate parent company of Salomon Brothers Asset
Management Inc ('SBAM'), Salomon Brothers Asset Management Limited ('SBAM
Ltd.') and Salomon Brothers Asset Management Asia Pacific Limited ('SBAM
AP'), announced their agreement to merge Salomon with and into Smith Barney
Holdings Inc., a subsidiary of Travelers, to form a new company expected to
be called Salomon Smith Barney Holdings Inc. (the 'Transaction'). Travelers
is a diversified financial services company engaged in the investment
services, asset management, consumer finance and life and property casualty
insurance services.
The Transaction is expected to be completed by November 30, 1997, subject
to a number of conditions, including the receipt of U.S. and foreign
regulatory approvals and the approval of Salomon stockholders. Upon
consummation of the Transaction, Travelers will become the ultimate parent
of SBAM, SBAM Ltd. and SBAM AP, which will continue to serve as the
investment adviser, and subadvisers, respectively, to the Series.'
<PAGE>