Supplement, dated January 2, 2002, to the Prospectus, dated May 1, 2001,
                   of Seligman Portfolios, Inc. (the "Series")
                                on behalf of its
                      Seligman Global Technology Portfolio


     The following  supersedes  and replaces the  information  set forth on page
P-25 of the Series'  Prospectus under the caption  "Seligman  Global  Technology
Portfolio" under the section "Portfolio Management."

Seligman's Global Technology Group manages the Global Technology Portfolio.  Mr.
Richard M. Parower,  Vice President,  Investment Officer of Seligman since April
2000, is Co-Portfolio  Manager of the Global Technology  Portfolio,  responsible
for the  Fund's US  investments.  Prior to joining  Seligman,  from June 1998 to
April  2000,  Mr.  Parower  was a Senior  Analyst  with  Citibank  Global  Asset
Management  cover  Global IT Services.  From  September  1995 to June 1998,  Mr.
Parower was a Senior Analyst with Montgomery Asset Management and from June 1993
to September 1995, he was a securities analyst for G.T. Capital Management.  Mr.
Parower is also  Co-Portfolio  Manager of the Seligman Global Technology Fund of
Seligman Global Fund Series, Inc.

Mr. Steven A. Werber,  who joined  Seligman on January 10, 2000 as a Senior Vice
President,   is  Co-Portfolio   Manager  of  the  Global  Technology   Portfolio
responsible  for its non-US  investments.  He is a Vice  President  of  Seligman
Portfolios,  Inc.  Prior to joining  Seligman,  Mr.  Werber  was an Analyst  and
Portfolio  Manager at  Fidelity  Investments  International  since  1996.  Prior
thereto,  he was an Associate at Goldman Sachs  International from 1992 to 1996.
Mr.  Werber is also a Vice  President of Seligman  Global Fund Series,  Inc. and
Co-Portfolio Manager of its Seligman Global Technology Fund.

Prior to April 1, 2000, Henderson Investment Management Limited (HIML) served as
subadviser  to the  Portfolio.  HIML,  established  in 1984,  is a wholly  owned
subsidiary of Henderson plc, a United Kingdom  corporation.  For the period from
January  1,  2000  through  March  31,  2000,  Seligman  paid HIML a fee for its
services  in  respect  of  the  Portfolio  based  on  the  assets  under  HIML's
supervision. This fee did not increase the fees paid by the Portfolio.


SP1S3-1/02