Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Stern Rachel Rebecca
 2. Date of Event Requiring Statement (Month/Day/Year)
10/10/2013		 3. Issuer Name and Ticker or Trading Symbol
FACTSET RESEARCH SYSTEMS INC [FDS]
(Last)
(First)
(Middle)
601 MERRITT 7		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Senior Vice President
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NORWALK, CT 06851		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
FactSet Common Stock 1,203 (3)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) 04/20/2006(1) 04/20/2015 FactSet Common Stock 875 $ 29 D  
Non-Qualified Stock Option (right to buy) 08/14/2008(1) 08/14/2014 FactSet Common Stock 1,546 $ 59.36 D  
Non-Qualified Stock Option (right to buy) 08/14/2009(1) 08/14/2015 FactSet Common Stock 3,527 $ 65.67 D  
Non-Qualified Stock Option (right to buy) 10/24/2009(1) 10/24/2015 FactSet Common Stock 1,720 $ 35.8 D  
Non-Qualified Stock Option (right to buy) 10/23/2010(1) 10/23/2016 FactSet Common Stock 4,583 $ 66.46 D  
Non-Qualified Stock Option (right to buy) 11/01/2012(1) 11/01/2021 FactSet Common Stock 2,680 $ 94.84 D  
Non-Qualified Stock Option (right to buy) 11/01/2013(1) 11/01/2022 FactSet Common Stock 3,761 $ 92.22 D  
Non-Qualified Stock Option (right to buy) 11/01/2013(2) 11/01/2022 FactSet Common Stock 6,164 $ 92.22 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Stern Rachel Rebecca
601 MERRITT 7
NORWALK, CT 06851		       Senior Vice President  

Signatures

/s/ Rachel R. Stern 10/10/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Twenty percent of this option grant is exercisable one year after the grant date, with the remainder vesting at a rate of 1.67% per month thereafter.
(2) These options shall become exercisable based on the achievement by the issuer of certain financial performance criteria. Options that do not vest at the end of a two-year performance period will be forfeited. Options that become exercisable vest 40% after the two-year performance period with the remainder vesting at 1.67% per month thereafter.
(3) Represents restricted stock awards which vest over 5 years at a rate of 60% after 3 years and the remaining 40% after 5 years, subject to continued employment.

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