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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 2009

Check here if Amendment [ X]; Amendment Number: 1
This Amendment (Check only one.): [  ] is a restatement.
                                  [ X] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    Tahithromos, L.L.C.
Address: 9 West 57th Street, Suite 4605
         New York, NY  10019

13F File Number:  028-12704

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      Mark Nikiper
Title:     Vice President
Phone:     212-303-5793

Signature, Place, and Date of Signing:

  /s/ Mark Nikiper     New York, NY     February 23, 2010

Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.



                              FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:         0

Form 13F Information Table Entry Total:    3

Form 13F Information Table Value Total:    $1,838 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional managers with respect to which this report is filed, other
than the manager filing this report.

NONE



             
                                                     FORM 13F INFORMATION TABLE
                                                             VALUE  SHARES/ SH/ PUT/ INVSTMT  OTHER            VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP     (x$1000)  PRN AMT PRN CALL DSCRETN MANAGERS         SOLE   SHARED     NONE
- ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
COGNIZANT TECHNOLOGY SOLUTIO   CL A             192446102     1360    30000 SH       SOLE    0               30000        0        0
PATNI COMPUTER SYS             SPONS ADR        703248203      205    10000 SH       SOLE    0               10000        0        0
STERLITE INDS INDIA LTD        ADS              859737207      273    14999 SH       SOLE    0               14999        0        0