13F-HR 1 a2202419z13f-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, 2010 ----------------------- 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 02110 ----------------------------------- 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 March 3, 2011 ------------------------------- ----------------- ------------- [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: 0 -------------------- Form 13F Information Table Value Total: 0 -------------------- (thousands) FORM 13F INFORMATION TABLE

COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 ~~Value~~6 7 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 Acme Packet Inc. Common Stock 004764106 3,660.45 96,480. Sh Sole 96,480. 0 0 Adc Dsl Systems Inc. Common Stock 000886309 2,971.12 234,500. Sh Sole 234,500. 0 0 Adobe Systems Incorporated Common Stock 00724F101 2,371.81 90,700. Sh Sole 90,700. 0 0 Alcatel-Lucent Common Stock 013904305 601.27 177,300. Sh Sole 177,300. 0 0 American Tower Corp. Common Stock 029912201 4,269.96 83,300. Sh Sole 83,300. 0 0 Amkore Technology Inc. Common Stock 031652100 1,220.05 185,700. Sh Sole 185,700. 0 0 Analog Devices Inc Common Stock 032654105 3,536.53 112,700. Sh Sole 112,700. 0 0 Apple Computer Inc ADRS 037833100 13,648.38 48,100. Sh Sole 48,100. 0 0 Asml Holding N.V. Common Stock N07059186 2,301.10 77,400. Sh Sole 77,400. 0 0 At&T Inc. Common Stock 00206R102 3,377.66 118,100. Sh Sole 118,100. 0 0 Atmel Corp. Common Stock 049513104 946.44 118,900. Sh Sole 118,900. 0 0 Avago Technologies Ltd Common Stock Y0486S104 4,880.17 216,800. Sh Sole 216,800. 0 0 Bmc Software Inc. Common Stock 055921100 963.42 23,800. Sh Sole 23,800. 0 0 Cablevision Systems Corporation Common Stock 12686C109 4,913.24 187,600. Sh Sole 187,600. 0 0 Cbs Corporation Common Stock 124857202 1,792.18 113,000. Sh Sole 113,000. 0 0 Centurytel Inc. Common Stock 156700106 1,716.51 43,500. Sh Sole 43,500. 0 0 Check Point Software Technologies Ltd. Common Stock M22465104 2,452.15 66,400. Sh Sole 66,400. 0 0 Comcast Corporation Common Stock 20030N101 1,929.14 106,700. Sh Sole 106,700. 0 0 Commscope Inc Common Stock 203372107 1,312.82 55,300. Sh Sole 55,300. 0 0 Crown Castle International Corp. Common Stock 228227104 4,247.23 96,200. Sh Sole 96,200. 0 0 Cypress Semiconductor Corp. Common Stock 232806109 2,727.34 216,800. Sh Sole 216,800. 0 0 Formfactor Inc. Common Stock 346375108 1,417.13 164,783. Sh Sole 164,783. 0 0 Google Inc. Common Stock 38259P508 6,782.69 12,900. Sh Sole 12,900. 0 0 Hewlett-Packard Company Common Stock 428236103 3,025.94 71,800. Sh Sole 71,800. 0 0 Linear Technology Corp. Common Stock 535678106 2,418.45 78,700. Sh Sole 78,700. 0 0 Macrovision Corp. Common Stock 779376102 1,945.83 38,600. Sh Sole 38,600. 0 0 Marvell Technology Group Ltd. Common Stock G5876H105 4,831.01 275,900. Sh Sole 275,900. 0 0 Monolithic Power Systems Common Stock 609839105 1,167.59 71,500. Sh Sole 71,500. 0 0 National Semiconductor Corporation Common Stock 637640103 583.59 45,700. Sh Sole 45,700. 0 0 News Corporation Common Stock 65248E104 3,259.21 247,100. Sh Sole 247,100. 0 0 Nvidia Corp. Common Stock 67066G104 2,786.16 238,500. Sh Sole 238,500. 0 0 Oracle Corporation Common Stock 68389X105 1,643.22 61,200. Sh Sole 61,200. 0 0 Pmc-Sierra Inc. Common Stock 69344F106 598.37 81,300. Sh Sole 81,300. 0 0 Qlogic Corporation Common Stock 747277101 4,155.98 235,600. Sh Sole 235,600. 0 0 Qualcomm Incorporated Common Stock 747525103 9,035.53 200,200. Sh Sole 200,200. 0 0 Sba Communications Corp. Common Stock 78388J106 947.05 23,500. Sh Sole 23,500. 0 0 Seagate Technology Common Stock G7945M107 3,698.53 314,100. Sh Sole 314,100. 0 0 Sycamore Networks Inc Common Stock 871206405 4,018.84 124,000. Sh Sole 124,000. 0 0 Time Warner Cable Inc Common Stock 88732J207 2,505.14 46,400. Sh Sole 46,400. 0 0 Time Warner Inc. Common Stock 887317303 4,238.90 138,300. Sh Sole 138,300. 0 0 Trina Solar Limited Common Stock 89628E104 2,366.11 78,400. Sh Sole 78,400. 0 0 Utstarcom Inc. Common Stock 918076100 1,155.31 532,400. Sh Sole 532,400. 0 0 Varian Semiconductor Equipment Associates Inc. Common Stock 922207105 5,223.57 181,500. Sh Sole 181,500. 0 0 Verigy Ltd. Common Stock Y93691106 1,198.36 147,400. Sh Sole 147,400. 0 0 Viacom Inc. Common Stock 92553P201 4,577.09 125,700. Sh Sole 125,700. 0 0 Virgin Media Inc. Common Stock 92769L101 2,467.42 107,000. Sh Sole 107,000. 0 0

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