Jana Partners LLC · 13F-HR · For 3/31/07

Filed On 5/11/07 12:18pm ET   ·   SEC File 28-10328   ·   Accession Number 902664-7-1700

Quarterly Holdings or Combination Report by an Institutional Money Manager   ·   Form 13F
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 13F-HR      Jana Partners Llc                                      4     36K 

13F-HR
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 UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 13F

 Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:  March 31, 2007                  
                                        ------------------------

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

Institutional Investment Manager Filing this Report:                            

Name:      JANA PARTNERS LLC                                                    
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Address:   200 Park Avenue, Suite 3300                                          
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New York, New York 10166                                  
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Form 13F File Number:     028-10328                                             
------------------          

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:      Charles Penner                                                       
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Title:     General Counsel                                                      
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Phone:     212 692-7696                                                         
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Signature, Place, and Date of Signing:                                          

/s/ Charles Penner               New York, New York        May 11, 2007         
------------------------   -----------------------------   ------------         

13F-HR
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Report Type (Check only one.):                                                  

[ X ]   13F HOLDINGS REPORT. (Check here if all holdings of this reporting      
manager are reported in this report.)                           

[   ]   13F NOTICE. (Check here if no holdings reported are in this report,     
and all holdings are reported by other reporting manager(s).)   

[   ]   13F COMBINATION REPORT. (Check here if a portion of the holdings for    
    this reporting manager are reported in this report and a portion are
reported by other reporting manager(s).)                        

13F-HR
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Report Summary:                                                                 

Number of Other Included Managers:             0                                
                           -------------

Form 13F Information Table Entry Total:        107                              
                           -------------

Form 13F Information Table Value Total:        $5,847,184                       
                           -------------
                           (thousands)

List of Other Included Managers:                                                

Provide a numbered list of the name(s) and Form 13F file number(s) of all       
institutional investment managers with respect to which this report is filed,   
other than the manager filing this report.   NONE                               

13F-HR
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                                                        [Enlarge/Download Table]

                                                      Form 13F INFORMATION TABLE                                                   

              COLUMN 1                 COLUMN 2       COLUMN 3   COLUMN 4      COLUMN 5      COLUMN 6  COLUMN 7        COLUMN 8    
---------------------------------  -------------- ------------- ---------- ----------------- ---------- -------- ------------------
                                                                  VALUE    SHRS OR  SH/ PUT/ INVESTMENT  OTHER     VOTING AUTHORITY
    NAME OF ISSUER                 TITLE OF CLASS      CUSIP     (x$1000)  PRN AMT  PRN CALL DISCRETION MANAGERS SOLE  SHARED  NONE
---------------------------------  --------------   -----------  --------  -------  --- ---- ---------- -------- ----  ------  ----
                                                                                                                                   
AER CAP HOLDINGS NV                       SHS         N00985106     9,932     341,200  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
ALCOA INC                                 COM         013817101   111,670   3,294,100  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
ALLIANCE ONE INTL INC                     COM         018772103    23,075   2,500,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
ALTRIA GROUP INC                          COM         02209S103   262,938   2,994,400  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
AMERICAN ITALIAN PASTA CO                 CL A        027070101    24,734   2,355,597  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
AMERICAN ORIENTAL BIOENGR IN              CL A        028731107     2,703     287,816  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
AMR CORP                                  COM         001765106    15,956     524,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
ARCADIA RES INC                           COM         039209101    24,133  15,235,396  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
AVIS BUDGET GROUP                         COM         053774105    61,049   2,234,600  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
AXCAN PHARMA INC                          COM         054923107    10,262     621,618  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
BAKBONE SOFTWARE INC                      COM         057101107     3,315   1,894,252  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
BROOKFIELD ASSET MGMT INC            CL A LTD UT SH   112585104   120,247   2,300,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
CARPENTER TECHNOLOGY CORP                 COM         144285103     3,019      25,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
CHECK POINT SOFTWARE TECH LT              ORD         M22465104    33,866   1,520,001  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
CHEMTRADE LOGISTICS INCOM FD               FD         16387P103     1,131     141,900  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
COLEMAN CABLE INC                         COM         193459302    23,805   1,150,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
COMSTOCK RES INC                        COM NEW       205768203     9,309     340,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
CONTINENTAL AIRLS INC                     CL B        210795308    13,322     366,100  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
COPART INC                                COM         217204106   104,251   3,721,925  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
COREL CORP NEW                            COM         21869X103     8,020     624,094  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
CSX CORP                                  COM         126408103    54,981   1,372,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
CVS CORP                                  COM         126650100   121,255   3,551,711  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
DADE BEHRING HLDGS INC                    COM         23342J206    73,880   1,684,835  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
DG FASTCHANNEL INC                        COM         23326R109    11,854     712,800  SH                        SOLE              
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DOMTAR CORP                               COM         257559104    14,721   1,581,200  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
EMPLOYERS HOLDINGS INC                    COM         292218104    16,216     810,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
ENTEGRIS INC                              COM         29362U104     3,221     301,000  SH                        SOLE              
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ENTRAVISION COMMUNICATIONS C              CL A        29382R107     2,709     290,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
EQUITABLE RES INC                         COM         294549100    89,005   1,842,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FEDERATED DEPT STORES INC DE              COM         31410H101    88,703   1,969,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FIDELITY NATL FINL INC                    COM         316326107    39,142   1,630,237  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FIRST CONSULTING GROUP INC                COM         31986R103     1,587     174,391  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FOUNDATION COAL HLDGS INC                 COM         35039W100     8,070     235,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FREEDOM ACQUISITION HLDGS IN              COM         35645F103    22,011   2,300,000  SH                        SOLE              
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FREEDOM ACQUISITION HLDGS IN        *W EXP 12/28/201  35645F111     3,128   2,300,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FREEPORT-MCMORAN COPPER & GO              CL B        35671D857   119,142   1,800,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
FREEPORT-MCMORAN COPPER & GO              CL B        35671D857    24,173     365,200  SH  CALL                                    
-----------------------------------------------------------------------------------------------------------------------------------
FRONTIER OIL CORP                         COM         35914P105    20,726     635,000  SH                        SOLE              
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GARDNER DENVER INC                        COM         365558105    13,243     380,000  SH                        SOLE              
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GERBER SCIENTIFIC INC                     COM         373730100     9,987     941,300  SH                        SOLE              
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GEVITY HR INC                             COM         374393106     8,150     412,865  SH                        SOLE              
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GMX RES INC                               COM         38011M108    13,706     446,000  SH                        SOLE              
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GOTTSCHALKS INC                           COM         383485109     8,562     600,000  SH                        SOLE              
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GPO AEROPORTUARIO PAC SA               SPON ADR B     400506101   130,324   3,030,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
GRIFFON CORP                              COM         398433102    10,680     431,500  SH                        SOLE              
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HAYNES INTERNATIONAL INC NEW              COM         420877201    53,742     736,900  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
HORIZON LINES INC                         COM         44044K101    14,057     428,300  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
HOUSTON EXPL CO                           COM         442120101   222,862   4,130,900  SH                        SOLE              
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HUBBELL INC                               CL A        443510102     3,894      83,700  SH                        SOLE              
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HUBBELL INC                               CL B        443510201     8,683     180,000  SH                        SOLE              
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IDEARC INC                                COM         451663108   167,890   4,783,200  SH                        SOLE              
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INFOUSA INC NEW                           COM         456818301     6,569     682,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
INGERSOLL-RAND COMPANY LTD                CL A        G4776G101   272,203   6,276,300  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
INGERSOLL-RAND COMPANY LTD                CL A        G4776G101    43,864   1,011,400  SH  CALL                                    
-----------------------------------------------------------------------------------------------------------------------------------
INNOPHOS HOLDINGS INC                     COM         45774N108    21,102   1,220,473  SH                        SOLE              
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INNOVA EXPLORATION LTD                    COM         457683100     7,223   1,572,583  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
JDA SOFTWARE GROUP INC                    COM         46612K108     4,509     300,000  SH                        SOLE              
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KANSAS CITY SOUTHERN                    COM NEW       485170302   100,542   2,825,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
KBR INC                                   COM         48242W106    77,757   3,821,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
KELLY SVCS INC                            CL A        488152208    24,837     771,350  SH                        SOLE              
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KENNAMETAL INC                            COM         489170100     9,465     140,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
LENNOX INTL INC                           COM         526107107   103,137   2,888,989  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
LIFEPOINT HOSPITALS INC                   COM         53219L109    22,347     584,692  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
LIMITED BRANDS INC                        COM         532716107   176,120   6,758,234  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
LSI LOGIC CORP                            COM         502161102   233,969  22,410,883  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
M & F WORLDWIDE CORP                      COM         552541104     2,414      50,700  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
MAGELLAN HEALTH SVCS INC                COM NEW       559079207    10,164     242,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
MARATHON OIL CORP                         COM         565849106    56,333     570,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
MAXIMUS INC                               COM         577933104   116,900   3,390,370  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
MIRANT CORP NEW                           COM         60467R100   357,383   8,833,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
MOTOROLA INC                              COM         620076109    17,670   1,000,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
NASDAQ STOCK MARKET INC                   COM         631103108    97,488   3,314,794  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
NATIONAL OILWELL VARCO INC                COM         637071101    70,011     900,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
NEWMARKET CORP                            COM         651587107     4,474     110,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
NEXTWAVE WIRELESS INC                     COM         65337Y102    14,949   1,494,939  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
NORFOLK SOUTHERN CORP                     COM         655844108   166,196   3,284,500  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
PALM INC NEW                              COM         696643105     4,797     264,573  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
PHOENIX COS INC NEW                       COM         71902E109     7,148     515,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
PINNACLE GAS RESOURCES                    COM         723464103     4,509     409,889  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
PRG-SCHULTZ INTERNATIONAL IN            COM NEW       69357C503     8,098     566,700  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
QLT INC                                   COM         746927102    68,335   8,727,319  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
RCN CORP                                COM NEW       749361200    63,096   2,469,496  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
SAIC INC                                  COM         78390X101    76,665   4,426,400  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
SI INTL INC                               COM         78427V102     8,912     310,400  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
SILVERLEAF RESORTS INC                    COM         828395103     6,601   1,419,600  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
SIX FLAGS INC                             COM         83001P109    26,629   4,430,700  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
SUPERIOR ESSEX INC                        COM         86815V105     7,281     210,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
SYMANTEC CORP                             COM         871503108    60,118   3,475,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TD AMERITRADE HLDG CORP                   COM         87236Y108    62,311   4,187,600  SH                        SOLE              
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TENNECO INC                               COM         880349105     6,365     250,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TEVA PHARMACEUTICAL INDS LTD              ADR         881624209    28,555     762,883  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TIME WARNER INC                           COM         887317105   141,028   7,151,500  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TITAN INTL INC ILL                        COM         88830M102   113,955   4,498,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TRANSFORMA ACQUISITION GROUP              COM         89366E100     7,510   1,000,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TRANSFORMA ACQUISITION GROUP        *W EXP 12/19/201  89366E118     1,090   1,000,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TRUMP ENTMT RESORTS INC                   COM         89816T103    30,546   1,690,450  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
TYCO INTL LTD NEW                         COM         902124106   177,210   5,616,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
UAL CORP                                COM NEW       902549807    26,071     683,021  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
ULURU INC                                 COM         90403T100    30,618   6,118,421  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
UNISYS CORP                               COM         909214108    34,677   4,113,500  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
U S AIRWAYS GROUP INC                     COM         90341W108    34,447     757,400  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
VALERO ENERGY CORP NEW                    COM         91913Y100   283,885   4,402,000  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
WEBSENSE INC                              COM         947684106    11,348     493,623  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
WILLIAMS COS INC DEL                      COM         969457100   122,458   4,302,800  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
WYNDHAM WORLDWIDE CORP                    COM         98310W108   105,554   3,090,900  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
X-RITE INC                                COM         983857103    10,337     798,200  SH                        SOLE              
-----------------------------------------------------------------------------------------------------------------------------------
YAHOO INC                                 COM         984332106    12,363     395,100  SH                        SOLE              
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Dates Referenced Herein   and   Documents Incorporated By Reference

				Referenced-On Page
This 13F-HR Filing		Date		First		Last			Other Filings
For The Period Ended		3/31/07		1
Filed On / Filed As Of / Effective As Of		5/11/07		1
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