0000902664-11-000935.txt : 20110516 0000902664-11-000935.hdr.sgml : 20110516 20110516133237 ACCESSION NUMBER: 0000902664-11-000935 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20110331 FILED AS OF DATE: 20110516 DATE AS OF CHANGE: 20110516 EFFECTIVENESS DATE: 20110516 FILER: COMPANY DATA: COMPANY CONFORMED NAME: ARDSLEY ADVISORY PARTNERS CENTRAL INDEX KEY: 0000900529 IRS NUMBER: 0 STATE OF INCORPORATION: CT FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-04639 FILM NUMBER: 11845232 BUSINESS ADDRESS: STREET 1: 262 HARBOR DRIVE, 4TH FLOOR CITY: STAMFORD STATE: CT ZIP: 06902 BUSINESS PHONE: 203-564-4230 MAIL ADDRESS: STREET 1: 262 HARBOR DRIVE, 4TH FLOOR CITY: STAMFORD STATE: CT ZIP: 06902 13F-HR 1 p11-1164form13fhr.txt ARDSLEY ADVISORY PARTNERS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter Ended: 3/31/2011 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: Ardsley Advisory Partners Address: 262 Harbor Drive, 4th Floor Stamford, CT 06902 Form 13F File Number: 28-04639 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. Persons Signing this Report on Behalf of Reporting Manager: Name: Steven Napoli Title: Partner Phone: 203-564-4230 Signature, Place, and Date of Signing: /s/ Steven Napoli Stamford, CT 5/16/2011 --------------------------------- --------------------------------- ---------- [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).) List of Other Managers Reporting for this Manager: none Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 109 Form 13F Information Table Value Total: $ 691,160 -------------- (In Thousands) List of Other Included Managers: Provide a numbered list of the name(s) and 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

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 ---------------------------- ---------------- --------- -------- --------- --- ---- ---------- -------- --------- ------ ---- ACTIVE POWER INC COM 00504W100 1,905 650,000 SH SOLE 650,000 0 0 ALCATEL-LUCENT SPONSORED ADR 013904305 21,052 3,625,000 SH SOLE 3,625,000 0 0 ALCOA INC COM 013817101 1,766 100,000 SH SOLE 100,000 0 0 ALPHA NATURAL RESOURCES INC COM 02076X102 9,796 165,000 SH SOLE 165,000 0 0 AMARIN CORP PLC SPONS ADR NEW 023111206 17,155 2,350,000 SH SOLE 2,350,000 0 0 AMERICAN RAILCAR INDS INC COM 02916P103 874 35,000 SH SOLE 35,000 0 0 AMERICAN SUPERCONDUCTOR CORP COM 030111108 3,731 150,000 SH SOLE 150,000 0 0 ANADARKO PETE CORP COM 032511107 16,384 200,000 SH SOLE 200,000 0 0 ARTHROCARE CORP COM 043136100 23,338 700,000 SH SOLE 700,000 0 0 ATMEL CORP COM 049513104 273 20,000 SH SOLE 20,000 0 0 BAIDU INC SPON ADR REP A 056752108 276 2,000 SH SOLE 2,000 0 0 BAXTER INTL INC COM 071813109 13,443 250,000 SH SOLE 250,000 0 0 BLUE COAT SYSTEMS INC COM NEW 09534T508 141 5,000 SH SOLE 5,000 0 0 BOEING CO COM 097023105 1,109 15,000 SH SOLE 15,000 0 0 BRIDGEPOINT ED INC COM 10807M105 5,130 300,000 SH SOLE 300,000 0 0 BROADSOFT INC COM 11133B409 22,620 475,000 SH SOLE 475,000 0 0 BROCADE COMMUNICATIONS SYS I COM NEW 111621306 338 55,000 SH SOLE 55,000 0 0 CALIX INC COM 13100M509 4,062 200,000 SH SOLE 200,000 0 0 CALPINE CORP COM NEW 131347304 3,174 200,000 SH SOLE 200,000 0 0 CEREPLAST INC COM NEW 156732307 998 210,000 SH SOLE 210,000 0 0 CHESAPEAKE ENERGY CORP COM 165167107 6,704 200,000 SH SOLE 200,000 0 0 CHINA HYDROELECTRIC CORP SPONSORED ADR 16949D101 1,632 224,750 SH SOLE 224,750 0 0 CHINA LODGING GROUP LTD SPONSORED ADR 16949N109 174 10,000 SH SOLE 10,000 0 0 CHINA VALVES TECHNOLOGY INC COM NEW 169476207 2,854 615,000 SH SOLE 615,000 0 0 CHINA YIDA HOLDINGS CO COM NEW 16945D204 6,703 882,000 SH SOLE 882,000 0 0 CHINA YUCHAI INTL LTD COM G21082105 1,467 50,000 SH SOLE 50,000 0 0 COEUR D ALENE MINES CORP IDA COM NEW 192108504 1,739 50,000 SH SOLE 50,000 0 0 COMVERGE INC COM 205859101 6,058 1,300,000 SH SOLE 1,300,000 0 0 COSAN LTD SHS A G25343107 2,528 196,000 SH SOLE 196,000 0 0 COVANTA HLDG CORP COM 22282E102 3,843 225,000 SH SOLE 225,000 0 0 CTRIP COM INTL LTD AMERICAN DEP SHS 22943F100 207 5,000 SH SOLE 5,000 0 0 DELTA AIR LINES INC DEL COM NEW 247361702 5,880 600,000 SH SOLE 600,000 0 0 ECOTALITY INC COM NEW 27922Y202 2,170 686,666 SH SOLE 686,666 0 0 ENTEROMEDICS INC COM NEW 29365M208 4,129 1,495,900 SH SOLE 1,495,900 0 0 ERICSSON L M TEL CO ADR B SEK 10 294821608 257 20,000 SH SOLE 20,000 0 0 EXAMWORKS GROUP INC COM 30066A105 2,779 125,000 SH SOLE 125,000 0 0 EXIDE TECHNOLOGIES COM NEW 302051206 4,747 425,000 SH SOLE 425,000 0 0 FALCONSTOR SOFTWARE INC COM 306137100 319 70,000 SH SOLE 70,000 0 0 FINISAR CORP COM NEW 31787A507 246 10,000 SH SOLE 10,000 0 0 FOCUS MEDIA HLDG LTD SPONSORED ADR 34415V109 307 10,000 SH SOLE 10,000 0 0 FREEPORT-MCMORAN COPPER & GO COM 35671D857 5,555 100,000 SH PUT SOLE 100,000 0 0 FUEL SYS SOLUTIONS INC COM 35952W103 4,527 150,000 SH SOLE 150,000 0 0 FUELCELL ENERGY INC COM 35952H106 2,675 1,250,000 SH SOLE 1,250,000 0 0 GANNETT INC COM 364730101 7,615 500,000 SH CALL SOLE GENERAC HLDGS INC COM 368736104 913 45,000 SH SOLE 45,000 0 0 GLOBAL POWER EQUIPMENT GRP I COM PAR $0.01 37941P306 2,221 80,777 SH SOLE 80,777 0 0 GLOBE SPECIALTY METALS INC COM 37954N206 5,918 260,000 SH SOLE 260,000 0 0 GREEN PLAINS RENEWABLE ENERG COM 393222104 1,322 110,000 SH SOLE 110,000 0 0 HALLIBURTON CO COM 406216101 63,621 1,276,500 SH CALL SOLE HALOZYME THERAPEUTICS INC COM 40637H109 9,387 1,400,000 SH SOLE 1,400,000 0 0 HARBIN ELECTRIC INC COM 41145W109 22,242 1,075,000 SH SOLE 1,075,000 0 0 HEADWATERS INC COM 42210P102 1,770 300,000 SH SOLE 300,000 0 0 HECKMANN CORP COM 422680108 9,825 1,500,000 SH SOLE 1,500,000 0 0 HUMAN GENOME SCIENCES INC COM 444903108 13,725 500,000 SH SOLE 500,000 0 0 IMRIS INC COM 45322N105 3,812 525,000 SH SOLE 525,000 0 0 JINPAN INTL LTD ORD G5138L100 1,538 131,700 SH SOLE 131,700 0 0 JOHNSON CTLS INC COM 478366107 1,039 25,000 SH SOLE 25,000 0 0 JPMORGAN CHASE & CO COM 46625H100 46,100 1,000,000 SH CALL SOLE KBR INC COM 48242W106 3,777 100,000 SH SOLE 100,000 0 0 KEYNOTE SYS INC COM 493308100 399 21,500 SH SOLE 21,500 0 0

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 ---------------------------- ---------------- --------- -------- --------- --- ---- ---------- -------- --------- ------ ---- KEYUAN PETROCHEMICALS INC COM 493722102 3,483 713,800 SH SOLE 713,800 0 0 LINN ENERGY LLC UNIT LTD LIAB 536020100 17,519 450,000 SH SOLE 450,000 0 0 LYONDELLBASELL INDUSTRIES N SHS - A - N53745100 16,455 416,050 SH SOLE 416,050 0 0 MARKET VECTORS ETF TR JR GOLD MINERS E 57060U589 5,883 150,000 SH SOLE 150,000 0 0 MELLANOX TECHNOLOGIES LTD SHS M51363113 8,831 350,000 SH SOLE 350,000 0 0 METALICO INC COM 591176102 1,555 250,000 SH SOLE 250,000 0 0 METROPCS COMMUNICATIONS INC COM 591708102 244 15,000 SH SOLE 15,000 0 0 MOLYCORP INC DEL COM 608753109 9,903 165,000 SH SOLE 165,000 0 0 NETEASE COM INC SPONSORED ADR 64110W102 248 5,000 SH SOLE 5,000 0 0 NEW ORIENTAL ED & TECH GRP I SPON ADR 647581107 500 5,000 SH SOLE 5,000 0 0 NEWFIELD EXPL CO COM 651290108 5,701 75,000 SH SOLE 75,000 0 0 NXP SEMICONDUCTORS N V COM N6596X109 4,794 160,000 SH SOLE 160,000 0 0 ORACLE CORP COM 68389X105 10,264 307,000 SH SOLE 307,000 0 0 ORMAT TECHNOLOGIES INC COM 686688102 2,533 100,000 SH SOLE 100,000 0 0 PFIZER INC COM 717081103 8,124 400,000 SH SOLE 400,000 0 0 PIONEER NAT RES CO COM 723787107 5,606 55,000 SH SOLE 55,000 0 0 QKL STORES INC COM 74732Y105 4,224 1,600,000 SH SOLE 1,600,000 0 0 QUALCOMM INC COM 747525103 10,966 200,000 SH SOLE 200,000 0 0 QUALITY DISTR INC FLA COM 74756M102 1,023 86,315 SH SOLE 86,315 0 0 QUANTA SVCS INC COM 74762E102 1,122 50,000 SH SOLE 50,000 0 0 RADIAN GROUP INC COM 750236101 8,342 1,225,000 SH SOLE 1,225,000 0 0 ROCKWOOD HLDGS INC COM 774415103 16,720 339,700 SH SOLE 339,700 0 0 RUBICON TECHNOLOGY INC COM 78112T107 2,768 100,000 SH SOLE 100,000 0 0 SPDR S&P 500 ETF TR TR UNIT 78462F103 13,259 100,000 SH PUT SOLE 100,000 0 0 SANDRIDGE ENERGY INC COM 80007P307 4,480 350,000 SH SOLE 350,000 0 0 SENSATA TECHNOLOGIES HLDG BV SHS N7902X106 4,168 120,000 SH SOLE 120,000 0 0 SIERRA WIRELESS INC COM 826516106 273 25,000 SH SOLE 25,000 0 0 SINO CLEAN ENERGY INC COM NEW 82936G200 4,845 850,000 SH SOLE 850,000 0 0 SOLUTIA INC COM NEW 834376501 1,905 75,000 SH SOLE 75,000 0 0 SONUS NETWORKS INC COM 835916107 301 80,000 SH SOLE 80,000 0 0 STEEL DYNAMICS INC COM 858119100 2,816 150,000 SH SOLE 150,000 0 0 SUNPOWER CORP COM CL A 867652109 1,285 75,000 SH SOLE 75,000 0 0 TELVENT GIT SA SHS E90215109 2,765 95,000 SH SOLE 95,000 0 0 TESLA MTRS INC COM 88160R101 1,388 50,000 SH SOLE 50,000 0 0 TITANIUM METALS CORP COM NEW 888339207 929 50,000 SH SOLE 50,000 0 0 TRANSATLANTIC PETROLEUM LTD SHS G89982105 3,767 1,215,000 SH SOLE 1,215,000 0 0 TSAKOS ENERGY NAVIGATION LTD SHS G9108L108 824 75,000 SH SOLE 75,000 0 0 TW TELECOM INC COM 87311L104 288 15,000 SH SOLE 15,000 0 0 UNITED STATES STL CORP NEW COM 912909108 12,137 225,000 SH SOLE 225,000 0 0 VISIONCHINA MEDIA INC SPONS ADR 92833U103 433 100,000 SH SOLE 100,000 0 0 VMWARE INC CL A COM 928563402 8,154 100,000 SH SOLE 100,000 0 0 WEATHERFORD INTERNATIONAL LT REG SHS H27013103 7,910 350,000 SH SOLE 350,000 0 0 WESTPORT INNOVATIONS INC COM NEW 960908309 15,386 700,000 SH SOLE 700,000 0 0 WONDER AUTO TECHNOLOGY INC COM 978166106 7,355 1,357,000 SH SOLE 1,357,000 0 0 YAHOO INC COM 984332106 13,344 800,000 SH CALL SOLE YONGYE INTL INC COM 98607B106 5,824 950,000 SH SOLE 950,000 0 0 YUCHENG TECHNOLOGIES LTD COM G98777108 261 65,000 SH SOLE 65,000 0 0 YUHE INTERNATIONAL INC COM 988432100 16,650 2,500,000 SH SOLE 2,500,000 0 0 ZBB ENERGY CORPORATION COM 98876R204 3,315 2,857,831 SH SOLE 2,857,831 0 0