Ardsley Advisory Partners

Ardsley Advisory Partners as of Dec. 31, 2011

Portfolio Holdings for Ardsley Advisory Partners

Ardsley Advisory Partners holds 85 positions in its portfolio as reported in the December 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Amarin Corporation (AMRN) 9.9 $47M 6.3M 7.49
ArthroCare Corporation 7.7 $37M 1.2M 31.68
Pfizer (PFE) 5.9 $28M 1.3M 21.64
Merck & Co (MRK) 5.5 $26M 700k 37.70
Halliburton Company (HAL) 5.0 $24M 700k 34.51
General Electric Company 4.9 $23M 1.3M 17.91
First Solar (FSLR) 4.5 $21M 635k 33.76
Aetna 4.0 $19M 450k 42.19
Westport Innovations 3.2 $16M 465k 33.24
Linn Energy 3.2 $15M 400k 37.91
Ens 2.2 $11M 225k 46.92
Heckmann Corporation 2.0 $9.6M 1.5M 6.65
Bridgepoint Education 2.0 $9.4M 409k 23.00
AFLAC Incorporated (AFL) 1.8 $8.7M 200k 43.26
Cameron International Corporation 1.8 $8.6M 175k 49.19
BP (BP) 1.8 $8.5M 200k 42.74
Halozyme Therapeutics (HALO) 1.7 $8.3M 875k 9.51
United Rentals (URI) 1.7 $8.1M 275k 29.55
Cabot Oil & Gas Corporation (CTRA) 1.7 $8.0M 106k 75.90
Industries N shs - a - (LYB) 1.6 $7.7M 236k 32.49
C&j Energy Services 1.5 $7.3M 350k 20.93
Energy Xxi 1.3 $6.4M 200k 31.88
Keynote Systems 1.3 $6.2M 300k 20.54
Gannett 1.2 $5.7M 429k 13.37
Fushi Copperweld 1.2 $5.6M 750k 7.52
Hldgs (UAL) 1.2 $5.7M 300k 18.87
Allot Communications (ALLT) 1.1 $5.4M 353k 15.20
Inphi Corporation 1.1 $5.4M 450k 11.96
Ormat Technologies (ORA) 1.1 $5.1M 283k 18.03
Radian (RDN) 1.0 $4.7M 2.0M 2.34
TiVo 0.9 $4.5M 500k 8.97
Pulte (PHM) 0.9 $4.4M 700k 6.31
EnteroMedics 0.9 $4.2M 2.5M 1.70
Comverge 0.8 $3.8M 3.0M 1.26
Occidental Petroleum Corporation (OXY) 0.8 $3.7M 40k 93.70
MGM Resorts International. (MGM) 0.8 $3.7M 350k 10.43
Pioneer Natural Resources 0.8 $3.6M 40k 89.48
Sensata Technologies Hldg Bv 0.7 $3.3M 125k 26.28
Nextera Energy (NEE) 0.6 $2.7M 45k 60.89
Johnson Controls 0.5 $2.5M 80k 31.26
McDermott International 0.5 $2.3M 200k 11.51
Ameres (AMRC) 0.4 $2.1M 150k 13.72
ZBB Energy Corporation (ZBB) 0.4 $2.0M 2.8M 0.71
World Energy Solutions 0.4 $1.9M 641k 3.02
Itron (ITRI) 0.4 $1.8M 50k 35.78
ProShares UltraShort Euro (EUO) 0.3 $1.5M 75k 20.35
MasTec (MTZ) 0.3 $1.5M 85k 17.36
China Valves Technology 0.3 $1.4M 678k 2.13
Maxwell Technologies 0.3 $1.4M 85k 16.24
Fuel Systems Solutions 0.3 $1.4M 85k 16.49
Synutra International 0.3 $1.3M 265k 5.06
EnerNOC 0.3 $1.4M 125k 10.87
NCI Building Systems 0.3 $1.4M 125k 10.87
Active Power 0.2 $1.1M 1.7M 0.66
Cheniere Energy (LNG) 0.2 $1.1M 125k 8.69
GrafTech International 0.2 $1.0M 75k 13.65
Calavo Growers (CVGW) 0.2 $1.0M 40k 25.68
Rockwood Holdings 0.2 $984k 25k 39.36
American Railcar Industries 0.2 $957k 40k 23.92
FutureFuel (FF) 0.2 $972k 78k 12.41
China Green Agriculture 0.2 $870k 290k 3.00
LSB Industries (LXU) 0.2 $841k 30k 28.03
Calpine Corporation 0.2 $817k 50k 16.34
Thermon Group Holdings (THR) 0.2 $793k 45k 17.62
Trinity Industries (TRN) 0.2 $752k 25k 30.08
Universal Display Corporation (OLED) 0.1 $734k 20k 36.70
EnergySolutions 0.1 $695k 225k 3.09
Green Plains Renewable Energy (GPRE) 0.1 $732k 75k 9.76
Ada-es 0.1 $716k 32k 22.64
Gevo 0.1 $566k 90k 6.29
China Yida Holding 0.1 $535k 280k 1.91
Flow Intl Corp Cmn Stk cmn 0.1 $525k 150k 3.50
Ecotality 0.1 $496k 459k 1.08
Generac Holdings (GNRC) 0.1 $420k 15k 28.00
Moly 0.1 $360k 15k 24.00
Commercial Metals Company (CMC) 0.1 $346k 25k 13.84
Arris 0.1 $325k 30k 10.83
Fuel Tech (FTEK) 0.1 $329k 50k 6.58
Ctrip.com International 0.1 $257k 11k 23.36
China Hydroelectric Corp 0.0 $128k 113k 1.14
China Lodging 0.0 $142k 10k 14.20
Procera Networks 0.0 $156k 10k 15.60
LSI Corporation 0.0 $89k 15k 5.93
RF Micro Devices 0.0 $54k 10k 5.40
Cereplast (CERP) 0.0 $38k 39k 0.97