13F-HR 1 a2196311z13f-hr.txt 13F-HR 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 / /; Amendment Number: --------- This Amendment (Check only one.): / / is a restatement. / / adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Loch Capital Management LLC ----------------------------------- Address: 30 Federal Street, Boston, MA 2110 ----------------------------------- Form 13F File Number: 28-11100 --------------------- 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: David Matthews ------------------------------- Title: Chief Financial Officer ------------------------------- Phone: 617-289-7604 ------------------------------- Signature, Place, and Date of Signing: /S/ David Matthews Boston, MA February 5, 2010 ------------------------------- ----------------- ------------- [Signature] [City, State] [Date] 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).) I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934 FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 -------------------- Form 13F Information Table Entry Total: 46 -------------------- Form 13F Information Table Value Total: 519,972 -------------------- (thousands) FORM 13F INFORMATION TABLE

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 Value Shares/~~Prn~~ Sh/ Put/ Invstmt Other Voting Authority NAME OF ISSUER TITLE OF CLASS CUSIP ~~Value~~ (x1000) Prn amt ~~Sh/~~Prn ~~Put/~~Call Discretn Mangers Sole Shared None ~~Airvana~~Accenture ~~Inc~~Ltd. Common Stock ~~00950V101~~G1151C101 ~~142~~3,896.85 2193,~~100~~900. Sh Sole 2193,~~100~~900. 0 0 ~~American~~Airvana ~~Tower Corp~~Inc. Common Stock ~~029912201~~00950V101 ~~826~~160.2836 2221,~~700~~100. Sh Sole 2221,~~700~~100. 0 0 ~~Apple~~American ~~Computer~~Tower ~~Inc~~Corp. Common Stock ~~037833100~~029912201 836,~~173~~218.9462 44838,~~100~~200. Sh Sole 44838,~~100~~200. 0 0 ~~Asml~~Apple ~~Holding~~Computer ~~N.V.~~Inc ~~ADRS N07059186 8,763.51 296,365. Sh Sole 296,365. 0 0 Atmel Corp.~~ Common Stock ~~049513104~~037833100 ~~109~~28,174.3687 26133,~~100~~700. Sh Sole 26133,~~100~~700. 0 0 Avago Technologies Ltd Common Stock Y0486S104 43,~~301~~323.6429 ~~252~~181,~~000~~700. Sh Sole ~~252~~181,~~000~~700. 0 0 ~~Brocade~~Bmc ~~Communications~~Software ~~Systems~~ Inc. Common Stock ~~111621306~~055921100 65,~~060~~437.0656 ~~771~~135,~~000~~600. Sh Sole ~~771~~135,~~000~~600. 0 0 ~~Cablevision~~Brocade Communications Systems ~~Corporation~~Inc. Common Stock ~~12686C109~~111621306 3,~~405~~729.7554 ~~143~~488,~~400~~800. Sh Sole ~~143~~488,~~400~~800. 0 0 ~~Centennial~~Ciena ~~Communications~~ Corp. Common Stock ~~15133V208~~171779309 ~~849~~12,253.0754 ~~106~~1,130,400. Sh Sole ~~106~~1,130,400. 0 0 Cisco Systems Inc. Common Stock 17275R102 2129,~~357~~819.8466 ~~907~~1,~~300~~245,600. Sh Sole ~~907~~1,~~300~~245,600. 0 0 ~~Citrix~~Commscope ~~Systems~~ Inc. Common Stock ~~177376100~~203372107 122,~~859~~419.5954 ~~327~~91,~~800~~200. Sh Sole ~~327~~91,~~800~~200. 0 0 ~~Clearwire~~Crown ~~Corporation~~Castle International Corp. Common Stock ~~18538Q105~~228227104 ~~793~~9,252.4948 97237,~~600~~000. Sh Sole 97237,~~600~~000. 0 0 Dish Network Corp. Common Stock 25470M109 1810,~~360~~054.5676 ~~953~~484,~~300~~100. Sh Sole ~~953~~484,~~300~~100. 0 0 ~~Ebay~~Dragonwave Inc. Common Stock ~~278642103~~26144M103 ~~851~~1,833.9660 36160,~~100~~000. Sh Sole 36160,~~100~~000. 0 0 ~~Emc~~Emulex Corporation Common Stock ~~268648102~~292475209 405,~~882~~339.3791 2489,~~399,200~~900. Sh Sole 2489,~~399,200~~900. 0 0 ~~Emulex~~Google ~~Corporation~~Inc. Common Stock ~~292475209~~38259P508 623,~~069~~869.0423 ~~589~~38,~~800~~500. Sh Sole ~~589~~38,~~800~~500. 0 0 ~~Iac/Interactivecorp~~Ja Solar Holding Co. ~~Common~~Ltd. ~~Stock~~ADRS ~~44919P508~~466090107 ~~2,650~~65.9555 ~~131~~11,~~300~~500. Sh Sole ~~131~~11,~~300~~500. 0 0 ~~International~~JDS ~~Business~~Uniphase ~~Machines~~Corp. ~~Corporation~~ Common Stock ~~459200101~~46612J507 ~~31,935~~102.8730 ~~267~~12,~~000~~400. Sh Sole ~~267~~12,~~000~~400. 0 0 ~~Isilon~~Kla-Tencor ~~Systems Inc~~Corp. Common Stock ~~46432L104~~482480100 657,937.2792 10219,~~700~~522. Sh Sole 10219,~~700~~522. 0 0 ~~Kla-Tencor~~Lam Research Corp. Common Stock ~~482480100~~512807108 1227,~~461~~270.3556 ~~347~~695,500. Sh Sole ~~347~~695,500. 0 0 Leap Wireless International Inc. Common Stock 521863308 16,~~798~~325.6002 92360,~~000~~400. Sh Sole 92360,~~000~~400. 0 0 ~~Lions~~Linear ~~Gate~~Technology ~~Entertainment~~ Corp. Common Stock ~~535919203~~535678106 ~~800~~11,215.1852 ~~129~~367,~~900~~000. Sh Sole ~~129~~367,~~900~~000. 0 0 Mattson Technology Inc Common Stock 577223100 113.9317 4031,~~400~~700. Sh Sole 4031,~~400~~700. 0 0 Maxim Integrated Products Inc. Common Stock 57772K101 1122,~~783~~536.3851 ~~649~~1,~~580~~109,080. Sh Sole ~~649~~1,~~580~~109,080. 0 0 Metropcs Communications Inc. Common Stock 591708102 7,~~545~~774.1021 ~~806~~1,~~100~~018,900. Sh Sole ~~806~~1,~~100~~018,900. 0 0 Micrel Inc. Common Stock 594793101 90135.4730 1116,~~100~~500. Sh Sole 1116,~~100~~500. 0 0 Microsoft Corp Common Stock 594918104 3272,~~245~~755.1676 12,~~253~~387,~~700~~000. Sh Sole 12,~~253~~387,~~700~~000. 0 0 Netapp Inc. Common Stock 64110D104 815,~~372~~919.1809 ~~313~~463,~~800~~303. Sh Sole ~~313~~463,~~800~~303. 0 0 News Corporation Common Stock 65248E104 1913,~~440~~110.9891 1957,~~625,500~~700. Sh Sole 1957,~~625,500~~700. 0 0 Novell Inc. Common Stock 670006105 ~~183~~168.5691 40,700. Sh Sole 40,700. 0 0 ~~Palm~~Nvidia ~~Inc~~Corp. Common Stock ~~696643105~~67066G104 821,~~406~~798.9929 ~~481~~1,~~500~~166,932. Sh Sole ~~481~~1,~~500~~166,932. 0 0 ~~Qlogic~~Oclaro ~~Corporation~~Inc. Common Stock ~~747277101~~67555N107 448.36 32,~~926~~900.08 ~~286~~Sh Sole 32,~~400~~900. 0 0 on Semiconductor Corp. Common Stock 682189105 181.69 20,600. Sh Sole ~~286~~20,~~400~~600. 0 0 ~~Renesola~~Oracle ~~Ltd~~Corporation ~~ADRS~~Common ~~75971T103~~Stock ~~708~~68389X105 16,121.9912 ~~147~~657,~~400~~200. Sh Sole ~~147~~657,~~400~~200. 0 0 ~~Semitool~~Palm Inc. Common Stock ~~816909105~~696643105 ~~104~~6,735.7815 12671,~~400~~500. Sh Sole 12671,~~400~~500. 0 0 ~~Sonus~~Qlogic ~~Networks~~Corporation ~~Inc~~Common Stock 747277101 5,961.03 315,900. Sh Sole 315,900. 0 0 Qualcomm Incorporated Common Stock ~~835916107~~747525103 ~~130~~31,590.8095 61682,~~700~~900. Sh Sole 61682,~~700~~900. 0 0 ~~Sprint~~Qwest ~~Nextel~~Communications ~~Corp~~International Inc. Common Stock ~~852061100~~749121109 91,~~319~~921.2444 2456,~~359,300~~400. Sh Sole 2456,~~359,300~~400. 0 0 ~~Starent~~Riverbed ~~Networks~~Technology ~~Corporation~~Inc. Common Stock ~~85528P108~~768573107 34,~~919~~819.7611 ~~154~~209,~~200~~800. Sh Sole ~~154~~209,~~200~~800. 0 0 Semitool Inc Common Stock 816909105 136.40 12,400. Sh Sole 12,400. 0 0 Teradyne Inc. Common Stock 880770102 ~~5,579~~148.0307 ~~603~~13,~~138~~800. Sh Sole ~~603~~13,~~138~~800. 0 0 The Directv Group Inc. Common Stock ~~25459L106~~25490A101 4627,~~406~~403.1170 1821,~~682,600~~700. Sh Sole 1821,~~682,600~~700. 0 0 Time Warner Cable Inc Common Stock 88732J207 95,~~596~~662.1415 ~~222~~136,~~700~~800. Sh Sole ~~222~~136,~~700~~800. 0 0 Verigy Ltd. Common Stock Y93691106 178.75 13,900. Sh Sole 13,900. 0 0 Virage Logic Corporation Common Stock 92763R104 ~~1,015~~1071.3284 194,880. Sh Sole 194,880. 0 0 Xilinx Inc. Common Stock 983919101 ~~17,098~~19003.9400 ~~730~~758,~~100~~300. Sh Sole ~~730~~758,~~100~~300. 0 0 Yahoo! Inc. Common Stock 984332106 ~~12,618~~15976.7276 ~~708~~952,~~519~~131. Sh Sole ~~708~~952,~~519~~131. 0 0

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