News Release

FOR IMMEDIATE RELEASE

FactSet is a registered trademark of FactSet Research Systems Inc.

FactSet  Research Systems Appoints Philip A. Hadley Chairman and Chief Executive
Officer

September 5, 2000 (Greenwich,  CT)--FactSet Research Systems Inc., (NYSE: FDS) a
major supplier of  computer-based  financial and economic data to the investment
community,  today  announced  that Philip A. Hadley has been named  Chairman and
Chief Executive Officer of the Company effective immediately.

Mr.  Hadley was  previously  Senior  Vice  President  and  Director  of Business
Development at FactSet.

Mr. Hadley replaces  Charles J. Snyder,  co-founder of FactSet and Vice Chairman
of the  Company's  Board  of  Directors,  who was  named  interim  CEO  upon the
retirement of Howard Wille. Mr. Snyder will continue to serve as Vice Chairman.

"It is with  great  pleasure  that we make this  announcement  today,"  said Mr.
Snyder. "Phil has been with FactSet for 15 years and his contributions have been
instrumental  to the growth and success of our business.  We are confident  that
his strong  leadership and strategic  insight will ensure that FactSet continues
its long track record of success."

"FactSet has grown tremendously over the years that I have been with the company
and is well positioned to continue our strong track record of performance," said
Mr.  Hadley.  "I look  forward  to  working  with  our  deeply  talented  senior
management  team to continue  enhancing  our  leadership  position  and offering
innovative products and services to our clients."

Mr. Hadley joined FactSet in 1985 in the Consulting Services Group. From 1986 to
1989,  he held the position of Vice  President,  Sales.  From 1989 to 2000,  Mr.
Hadley was Senior Vice President and Director of Sales and  Marketing.  Prior to
joining the Company, he was employed by Cargill Corporation.

Mr. Hadley  received a B.B.A. in Accounting from the University of Iowa and is a
Chartered Financial Analyst.

FactSet  Research  Systems Inc. is a leading  provider of global  financial  and
economic  information,  including  fundamental  data  on tens  of  thousands  of
companies  worldwide.  Combining  more than 100 databases into its own dedicated
online  service,  the company also  provides the tools to download,  combine and
manipulate  the data for  investment  analysis.  The company,  headquartered  in
Greenwich,  Connecticut,  was formed in 1978 and now  conducts  operations  from
eleven locations worldwide including Boston, New York, San Mateo, London, Tokyo,
Hong Kong, and Sydney.