13F-HR 1 p08-0951form13fhr.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: March 31, 2008 ----------------------- 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. Person 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 5/8/08 ------------------------ --------------------------- --------- [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: 70 ------------- Form 13F Information Table Value Total: $742,699 ------------- (thousands) List of Other Included Managers: none 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. 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 ------------------------------------ ---------------- --------- -------- -------- --- ---- ---------- -------- -------- ------ ---- A POWER ENERGY GENERAT SYS L COM G04136100 5,378 355000 SH SOLE 355000 0 0 ACTIVE POWER INC COM 00504W100 990 532000 SH SOLE 532000 0 0 AETNA INC NEW COM 00817Y108 16,836 400000 SH SOLE 400000 0 0 AIXTRON AKTIENGESELLSCHAFT SPONSORED ADR 009606104 5,823 425000 SH SOLE 425000 0 0 AKAMAI TECHNOLOGIES INC COM 00971T101 8,448 300000 SH SOLE 300000 0 0 ALTAIR NANOTECHNOLOGIES INC COM 021373105 2,442 925000 SH SOLE 925000 0 0 AMERICAN INTL GROUP INC COM 026874107 17,300 400000 SH CALL SOLE 400000 0 0 APPLE INC COM 037833100 46,638 325000 SH SOLE 325000 0 0 ASPENBIO PHARMA INC COM 045346103 2,381 412000 SH SOLE 412000 0 0 AXT INC COM 00246W103 2,981 625000 SH SOLE 625000 0 0 CHESAPEAKE ENERGY CORP COM 165167107 6,923 150000 SH SOLE 150000 0 0 CHINA SEC & SURVE TECH INC COM 16942J105 13,313 750000 SH SOLE 750000 0 0 CLEAN ENERGY FUELS CORP COM 184499101 5,317 398000 SH SOLE 398000 0 0 CONTINENTAL RESOURCES INC COM 212015101 11,162 350000 SH SOLE 350000 0 0 COUNTRYWIDE FINANCIAL CORP COM 222372104 8,250 1500000 SH SOLE 1500000 0 0 COVANTA HLDG CORP COM 22282E102 26,813 975000 SH SOLE 975000 0 0 CSK AUTO CORP COM 125965103 3,817 410000 SH SOLE 410000 0 0 CVS CAREMARK CORPORATION COM 126650100 18,230 450000 SH SOLE 450000 0 0 DEVON ENERGY CORP NEW COM 25179M103 13,041 125000 SH SOLE 125000 0 0 EMCORE CORP COM 290846104 14,832 2575000 SH SOLE 2575000 0 0 ENPRO INDS INC COM 29355X107 6,238 200000 SH SOLE 200000 0 0 ENVIRONMENTAL PWR CORP COM NEW 29406L201 4,316 1040000 SH SOLE 1040000 0 0 EXIDE TECHNOLOGIES COM NEW 302051206 23,580 1800000 SH SOLE 1800000 0 0 FUELCELL ENERGY INC COM 35952H106 3,325 500000 SH SOLE 500000 0 0 FUSHI COPPERWELD INC COM 36113E107 13,125 875000 SH SOLE 875000 0 0 GIANT INTERACTIVE GROUP INC ADR 374511103 1,265 100000 SH SOLE 100000 0 0 GOOGLE INC CL A 38259P508 11,012 25000 SH SOLE 25000 0 0 GRACE W R & CO DEL NEW COM 38388F108 61,044 2675000 SH SOLE 2675000 0 0 HARBIN ELECTRIC INC COM 41145W109 7,533 575000 SH SOLE 575000 0 0 HEADWATERS INC COM 42210P102 2,308 175000 SH SOLE 175000 0 0 HEALTHWAYS INC COM 422245100 7,068 200000 SH SOLE 200000 0 0 HYDROGEN CORP COM 44887Q108 562 295650 SH SOLE 295650 0 0 ICICI BK LTD ADR 45104G104 13,367 350000 SH SOLE 350000 0 0 INVITROGEN CORP COM 46185R100 6,410 75000 SH SOLE 75000 0 0 KAYDON CORP COM 486587108 2,196 50000 SH SOLE 50000 0 0 LIGAND PHARMACEUTICALS INC CL B 53220K207 4,640 1160000 SH SOLE 1160000 0 0 LSB INDS INC COM 502160104 4,164 282500 SH SOLE 282500 0 0 MARVELL TECHNOLOGY GROUP LTD ORD G5876H105 8,160 750000 SH SOLE 750000 0 0 MAXWELL TECHNOLOGIES INC COM 577767106 6,063 595004 SH SOLE 595004 0 0 METALICO INC COM 591176102 8,317 850385 SH SOLE 850385 0 0 MONOGRAM BIOSCIENCES INC COM 60975U108 6,360 6000000 SH SOLE 6000000 0 0 NOBLE CORPORATION SHS G65422100 7,451 150000 SH SOLE 150000 0 0 NOVA BIOSOURCE FUELS COM 65488W103 1,607 1064405 SH SOLE 1064405 0 0 ORMAT TECHNOLOGIES INC COM 686688102 1,935 45000 SH SOLE 45000 0 0 POWERSECURE INTL INC COM 73936N105 2,343 199100 SH SOLE 199100 0 0 POWERSHARES QQQ TRUST UNIT SER 1 73935A104 8,744 200000 SH SOLE 200000 0 0 QUANTA SVCS INC COM 74762E102 3,476 150000 SH SOLE 150000 0 0 RIVERBED TECHNOLOGY INC COM 768573107 3,715 250000 SH SOLE 250000 0 0 SCHERING PLOUGH CORP COM 806605101 38,907 2700000 SH SOLE 2700000 0 0 SHAW GROUP INC COM 820280105 14,849 315000 SH SOLE 315000 0 0 SMART BALANCE INC COM 83169Y108 20,145 2550000 SH SOLE 2550000 0 0 SOLUTIA INC COM NEW 834376501 11,893 849515 SH SOLE 849515 0 0 SUNPOWER CORP COM CL A 867652109 17,510 235000 SH SOLE 235000 0 0 SUNTECH PWR HLDGS CO LTD ADR 86800C104 28,392 700000 SH SOLE 700000 0 0 SYNTHESIS ENERGY SYS INC COM 871628103 3,432 390000 SH SOLE 390000 0 0 TELETECH HOLDINGS INC COM 879939106 6,738 300000 SH SOLE 300000 0 0 TETRA TECH INC NEW COM 88162G103 1,463 75000 SH SOLE 75000 0 0 THERMO FISHER SCIENTIFIC INC COM 883556102 22,736 400000 SH SOLE 400000 0 0 TITAN INTL INC ILL COM 88830M102 7,040 230000 SH SOLE 230000 0 0 TRONOX INC CL A 897051108 10,645 2667850 SH SOLE 2667850 0 0 TRONOX INC COM CL B 897051207 702 180000 SH SOLE 180000 0 0 ULTRAPETROL BAHAMAS LTD COM P94398107 2,560 250000 SH SOLE 250000 0 0 VALENCE TECHNOLOGY INC COM 918914102 772 175000 SH SOLE 175000 0 0 VEECO INSTRS INC DEL COM 922417100 2,495 150000 SH SOLE 150000 0 0 VEOLIA ENVIRONNEMENT SPONSORED ADR 92334N103 1,748 25000 SH SOLE 25000 0 0 WEYERHAEUSER CO COM 962166104 4,878 75000 SH SOLE 75000 0 0 WONDER AUTO TECHNOLOGY INC COM 978166106 13,168 1600000 SH SOLE 1600000 0 0 YINGLI GREEN ENERGY HLDG CO ADR 98584B103 40,185 2350000 SH SOLE 2350000 0 0 YUCHENG TECHNOLOGIES LTD COM G98777108 23,418 1415000 SH SOLE 1415000 0 0 ZHONGPIN INC COM 98952K107 7,784 800000 SH SOLE 800000 0 0