Ardsley Advisory Partners

Ardsley Advisory Partners as of Sept. 30, 2011

Portfolio Holdings for Ardsley Advisory Partners

Ardsley Advisory Partners holds 77 positions in its portfolio as reported in the September 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Amarin Corporation (AMRN) 11.7 $46M 5.0M 9.20
ArthroCare Corporation 7.6 $30M 1.0M 28.77
Harbin Electric 6.0 $23M 1.1M 20.65
Halliburton Company (HAL) 5.3 $21M 677k 30.52
Pfizer (PFE) 4.5 $18M 1.0M 17.68
Linn Energy 3.7 $14M 400k 35.66
Aetna 3.5 $14M 375k 36.34
Westport Innovations 3.5 $14M 465k 28.93
Mellanox Technologies 2.4 $9.4M 300k 31.22
Occidental Petroleum Corporation (OXY) 2.3 $8.9M 125k 71.50
Industries N shs - a - (LYB) 2.1 $8.3M 340k 24.43
Bridgepoint Education 2.1 $8.3M 475k 17.44
Rockwood Holdings 2.1 $8.1M 240k 33.69
Whiting Petroleum Corporation 2.0 $7.9M 225k 35.08
Ormat Technologies (ORA) 2.0 $7.6M 475k 16.08
eBay (EBAY) 1.9 $7.4M 250k 29.49
First Solar (FSLR) 1.9 $7.3M 115k 63.21
BP (BP) 1.9 $7.2M 200k 36.07
Moly 1.9 $7.2M 220k 32.87
Heckmann Corporation 1.8 $6.9M 1.3M 5.29
Halozyme Therapeutics (HALO) 1.7 $6.8M 1.1M 6.14
ProShares UltraShort Euro (EUO) 1.7 $6.7M 350k 19.28
Keynote Systems 1.6 $6.1M 290k 21.13
C&j Energy Services 1.6 $6.1M 370k 16.44
Hldgs (UAL) 1.5 $5.8M 300k 19.38
BroadSoft 1.4 $5.5M 181k 30.35
Chart Industries (GTLS) 1.3 $5.1M 120k 42.18
Radian (RDN) 1.3 $4.9M 2.3M 2.19
Market Vectors Junior Gold Miners ETF 1.3 $4.9M 175k 28.15
Gannett 1.2 $4.8M 500k 9.53
Avago Technologies 1.1 $4.1M 125k 32.77
United Rentals (URI) 1.0 $4.0M 240k 16.84
EnteroMedics 1.0 $3.8M 2.3M 1.71
Sensata Technologies Hldg Bv 0.8 $3.0M 115k 26.46
Comverge 0.8 $3.0M 1.7M 1.82
McDermott International 0.7 $2.8M 265k 10.75
China Yida Holding 0.7 $2.7M 870k 3.15
China Valves Technology 0.7 $2.7M 1.2M 2.23
GrafTech International 0.7 $2.5M 200k 12.70
Ecotality 0.5 $2.1M 1.1M 1.86
Keyuan Petrochemicals (KEYP) 0.5 $2.1M 714k 2.88
QKL Stores 0.5 $1.7M 1.5M 1.20
Ameres (AMRC) 0.5 $1.8M 173k 10.16
World Energy Solutions 0.4 $1.7M 561k 2.97
Inphi Corporation 0.4 $1.7M 190k 8.77
Entropic Communications 0.4 $1.7M 400k 4.13
MasTec (MTZ) 0.4 $1.5M 85k 17.61
ZBB Energy Corporation (ZBB) 0.4 $1.5M 2.8M 0.54
Globe Specialty Metals 0.3 $1.3M 90k 14.52
Johnson Controls 0.3 $1.3M 50k 26.38
KBR (KBR) 0.3 $1.2M 50k 23.64
Active Power 0.3 $1.1M 850k 1.29
Covanta Holding Corporation 0.3 $1.1M 70k 15.19
Universal Display Corporation (OLED) 0.2 $959k 20k 47.95
Kior Inc. Cl A 0.2 $933k 45k 20.73
FutureFuel (FF) 0.2 $814k 78k 10.40
Calpine Corporation 0.2 $704k 50k 14.08
Green Plains Renewable Energy (GPRE) 0.2 $700k 75k 9.33
FuelCell Energy 0.2 $630k 750k 0.84
Thermon Group Holdings (THR) 0.2 $622k 45k 13.82
Cvd Equipment Corp equity (CVV) 0.1 $540k 40k 13.50
ProShares UltraShort 20+ Year Trea 0.1 $486k 25k 19.44
Amtech Systems (ASYS) 0.1 $400k 50k 8.00
Yingli Green Energy Hold 0.1 $310k 100k 3.10
Ada-es 0.1 $292k 19k 15.26
China Hydroelectric Corp 0.1 $243k 117k 2.08
Cereplast (CERP) 0.1 $250k 89k 2.80
Gevo 0.1 $251k 45k 5.58
Poly 0.1 $184k 10k 18.40
Giant Interactive 0.1 $200k 60k 3.33
Procera Networks 0.1 $192k 20k 9.60
Immersion Corporation (IMMR) 0.0 $120k 20k 6.00
Allot Communications (ALLT) 0.0 $98k 10k 9.80
RF Micro Devices 0.0 $82k 13k 6.31
Yucheng Technologies 0.0 $59k 21k 2.88
Sky mobi 0.0 $76k 23k 3.26
Openwave Systems 0.0 $23k 15k 1.53