UNITED STATES
                   SECURITIES AND EXCHANGE COMMISSION
                        Washington, D.C. 20549

                            SCHEDULE 13G

               Under the Securities Exchange Act of 1934


		           Name of Issuer: Stamps.Com, Inc


               Title of Class of Securities:Common Stock


               CUSIP Number: 852857200


               Date of Event Which Requires Filing of this Statement: 12/31/2011

Check the appropriate box to designate the rule pursuant to which
this Schedule is filed:

      [x] Rule 13d-1(b)

      [ ] Rule 13d-1(c)

      [ ] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting persons
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be filed for the purpose of Section 18 of the Securities Exchange Act of
1934 (Act) or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

Persons who respond to the collection of information contained in this form are
not required to respond unless the form displays a currently valid OMB control
number.

      CUSIP No. 852857200


      1. Names of Reporting Persons.
         I.R.S. Identification Nos. of above persons (entities only).

                   Columbus Circle Investors
                   06-1404-803

      2. Check the Appropriate Box if a Member of a Group (See Instructions)

          (a)

          (b)


      3. SEC Use Only


      4. Citizenship or Place of Organization
               Connecticut

      Number of           5. Sole Voting Power:        761,409
      Shares Bene-        6. Shared Voting Power:
      ficially by         7. Sole Dispositive Power:   844,959
      Owned by Each       8. Shared Dispositive Power:  14,900
      Reporting
      Person With:


      9. Aggregate Amount Beneficially Owned by Each Reporting Person
                       859,859

      10. Check if the Aggregate Amount in row [9] Excludes Certain Shares
          (See Instructions)


      11. Percent of Class Represented by Amount in Row [9]
                       5.32%

      12. Type of Reporting Person [See Instructions]: IA