Essex Investment Management

Essex Investment Management as of Dec. 31, 2012

Portfolio Holdings for Essex Investment Management

Essex Investment Management holds 319 positions in its portfolio as reported in the December 2012 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
eBay (EBAY) 2.4 $14M 272k 51.00
Google 2.1 $12M 17k 707.41
US Airways 2.0 $12M 861k 13.50
Apple (AAPL) 2.0 $12M 22k 532.18
Celgene Corporation 1.8 $10M 131k 78.47
Royal Gold (RGLD) 1.7 $9.5M 117k 81.36
Newmont Mining Corporation (NEM) 1.5 $8.4M 182k 46.44
Adobe Systems Incorporated (ADBE) 1.4 $8.1M 215k 37.68
Intuit (INTU) 1.4 $7.7M 129k 59.47
Walt Disney Company (DIS) 1.3 $7.4M 149k 49.79
Facebook Inc cl a (META) 1.2 $6.8M 254k 26.62
Allied Nevada Gold 1.2 $6.7M 222k 30.13
Morgan Stanley (MS) 1.2 $6.6M 347k 19.12
Adt 1.1 $6.5M 140k 46.49
Qualcomm (QCOM) 1.1 $6.4M 103k 61.86
New Gold Inc Cda (NGD) 1.1 $6.0M 543k 11.03
Cray 1.0 $5.8M 362k 15.95
On Assignment 1.0 $5.7M 282k 20.28
Coca-Cola Company (KO) 1.0 $5.6M 154k 36.25
Akamai Technologies (AKAM) 0.9 $5.4M 132k 40.91
McGraw-Hill Companies 0.9 $5.3M 97k 54.67
Ellie Mae 0.9 $5.2M 189k 27.75
Franco-Nevada Corporation (FNV) 0.9 $5.1M 89k 57.17
KEYW Holding 0.9 $5.0M 395k 12.69
Bottomline Technologies 0.9 $4.9M 187k 26.39
Uni-Pixel 0.8 $4.8M 354k 13.69
ARM Holdings 0.8 $4.6M 122k 37.83
Gilead Sciences (GILD) 0.8 $4.5M 61k 73.45
Goldman Sachs (GS) 0.8 $4.3M 34k 127.56
Qihoo 360 Technologies Co Lt 0.7 $4.2M 141k 29.69
Headwaters Incorporated 0.7 $4.0M 467k 8.56
USG Corporation 0.7 $3.9M 141k 28.07
EOG Resources (EOG) 0.7 $3.9M 32k 120.80
JPMorgan Chase & Co. (JPM) 0.7 $3.7M 84k 43.96
Biogen Idec (BIIB) 0.7 $3.7M 25k 146.38
Orexigen Therapeutics 0.6 $3.5M 659k 5.25
BE Aerospace 0.6 $3.4M 69k 49.40
Quanta Services (PWR) 0.6 $3.4M 125k 27.29
Halcon Resources 0.6 $3.4M 490k 6.92
General Electric Company 0.6 $3.4M 160k 20.99
Eagle Materials (EXP) 0.6 $3.3M 57k 58.50
SPDR Gold Trust (GLD) 0.6 $3.3M 21k 162.00
Sequenom 0.6 $3.4M 716k 4.71
Verisk Analytics (VRSK) 0.6 $3.3M 64k 50.97
Wageworks 0.6 $3.3M 185k 17.80
Web 0.6 $3.2M 219k 14.80
Aurico Gold 0.6 $3.2M 389k 8.18
Elan Corporation 0.6 $3.1M 308k 10.21
Wells Fargo & Company (WFC) 0.5 $3.1M 90k 34.18
Schlumberger (SLB) 0.5 $3.1M 44k 69.29
Starbucks Corporation (SBUX) 0.5 $3.1M 58k 53.63
Stewart Information Services Corporation (STC) 0.5 $3.0M 114k 26.00
Charles Schwab Corporation (SCHW) 0.5 $3.0M 207k 14.36
Lowe's Companies (LOW) 0.5 $3.0M 84k 35.51
EnerNOC 0.5 $2.9M 250k 11.75
Westport Innovations 0.5 $3.0M 112k 26.71
Hertz Global Holdings 0.5 $2.9M 178k 16.27
Yamana Gold 0.5 $2.9M 167k 17.21
At&t (T) 0.5 $2.8M 83k 33.71
Advisory Board Company 0.5 $2.8M 59k 46.78
Hecla Mining Company (HL) 0.5 $2.7M 470k 5.83
Chubb Corporation 0.5 $2.7M 35k 75.33
Targa Res Corp (TRGP) 0.5 $2.7M 51k 52.83
Performant Finl (PFMT) 0.5 $2.6M 262k 10.10
Paychex (PAYX) 0.5 $2.6M 83k 31.10
PROS Holdings (PRO) 0.5 $2.5M 139k 18.29
Yandex Nv-a (YNDX) 0.5 $2.6M 119k 21.54
Southwestern Energy Company 0.4 $2.5M 75k 33.41
Goldcorp 0.4 $2.5M 68k 36.70
Silver Wheaton Corp 0.4 $2.5M 69k 36.08
Seadrill Partners 0.4 $2.5M 99k 25.65
Corning Incorporated (GLW) 0.4 $2.3M 185k 12.62
Sodastream International 0.4 $2.3M 52k 44.89
Via 0.4 $2.2M 43k 52.75
Freeport-McMoRan Copper & Gold (FCX) 0.4 $2.2M 64k 34.21
CNO Financial (CNO) 0.4 $2.2M 235k 9.33
Ace Limited Cmn 0.4 $2.1M 27k 79.82
Symmetry Medical 0.4 $2.1M 203k 10.52
Range Resources (RRC) 0.4 $2.1M 34k 62.83
Home Depot (HD) 0.4 $2.1M 34k 61.84
Manhattan Associates (MANH) 0.4 $2.1M 35k 60.34
Hologic (HOLX) 0.4 $2.1M 103k 20.01
Halliburton Company (HAL) 0.4 $2.0M 59k 34.69
Delta Air Lines (DAL) 0.4 $2.1M 174k 11.87
Market Leader 0.4 $2.0M 312k 6.55
Cooper Companies 0.3 $2.0M 22k 92.50
ConocoPhillips (COP) 0.3 $2.0M 35k 57.98
Cree 0.3 $2.0M 58k 33.97
Apache Corporation 0.3 $1.9M 25k 78.52
Krispy Kreme Doughnuts 0.3 $1.9M 207k 9.38
iShares Silver Trust (SLV) 0.3 $1.9M 65k 29.37
Tearlab Corp 0.3 $1.9M 466k 4.10
athenahealth 0.3 $1.9M 26k 73.30
Banco Bradesco SA (BBD) 0.3 $1.8M 107k 17.37
Alkermes (ALKS) 0.3 $1.9M 100k 18.52
Colgate-Palmolive Company (CL) 0.3 $1.8M 17k 104.52
HMS Holdings 0.3 $1.8M 71k 25.92
Icon 0.3 $1.8M 66k 27.75
Interactive Intelligence Group 0.3 $1.8M 54k 33.54
Restoration Hardware Hldgs I 0.3 $1.8M 54k 33.73
Johnson & Johnson (JNJ) 0.3 $1.7M 25k 70.08
Nuance Communications 0.3 $1.8M 80k 22.32
Eldorado Gold Corp 0.3 $1.8M 137k 12.88
Snap-on Incorporated (SNA) 0.3 $1.7M 22k 78.97
Wabash National Corporation (WNC) 0.3 $1.7M 187k 8.97
HealthStream (HSTM) 0.3 $1.7M 70k 24.31
Allergan 0.3 $1.7M 18k 91.74
Akorn 0.3 $1.6M 123k 13.36
Crawford & Company (CRD.B) 0.3 $1.7M 208k 7.98
Boeing Company (BA) 0.3 $1.6M 21k 75.34
Verizon Communications (VZ) 0.3 $1.6M 37k 43.26
inContact, Inc . 0.3 $1.6M 307k 5.18
NetApp (NTAP) 0.3 $1.5M 46k 33.56
Encore Capital (ECPG) 0.3 $1.5M 51k 30.63
Bruker Corporation (BRKR) 0.3 $1.5M 100k 15.24
Sandstorm Gold (SAND) 0.3 $1.5M 131k 11.75
SVB Financial (SIVBQ) 0.3 $1.5M 27k 55.98
Vocus 0.3 $1.5M 84k 17.38
MWI Veterinary Supply 0.3 $1.5M 14k 109.98
Lionbridge Technologies 0.3 $1.5M 371k 4.02
Insulet Corporation (PODD) 0.3 $1.5M 71k 21.23
Conceptus 0.2 $1.4M 67k 21.00
BioScrip 0.2 $1.4M 131k 10.77
Chart Industries (GTLS) 0.2 $1.4M 21k 66.71
Computer Task 0.2 $1.4M 79k 18.23
Comerica Incorporated (CMA) 0.2 $1.4M 46k 30.33
Imax Corp Cad (IMAX) 0.2 $1.4M 60k 22.48
Allot Communications (ALLT) 0.2 $1.4M 77k 17.82
Derma Sciences 0.2 $1.4M 125k 11.11
Continental Resources 0.2 $1.3M 18k 73.51
TETRA Technologies (TTI) 0.2 $1.3M 169k 7.59
Aol 0.2 $1.3M 44k 29.62
Great Lakes Dredge & Dock Corporation (GLDD) 0.2 $1.3M 148k 8.93
Hain Celestial (HAIN) 0.2 $1.3M 24k 54.24
Aviat Networks 0.2 $1.3M 406k 3.29
Guidance Software 0.2 $1.3M 108k 11.87
Cardtronics 0.2 $1.3M 56k 23.75
Intermolecular 0.2 $1.3M 145k 8.90
Barrick Gold Corp (GOLD) 0.2 $1.2M 35k 35.02
Arthur J. Gallagher & Co. (AJG) 0.2 $1.3M 36k 34.65
Whirlpool Corporation (WHR) 0.2 $1.2M 12k 101.78
eHealth (EHTH) 0.2 $1.2M 45k 27.48
Live Nation Entertainment (LYV) 0.2 $1.3M 135k 9.31
Old Republic International Corporation (ORI) 0.2 $1.3M 118k 10.65
Sina Corporation 0.2 $1.3M 25k 50.22
Titan International (TWI) 0.2 $1.2M 57k 21.71
Baidu (BIDU) 0.2 $1.3M 13k 100.26
United Online 0.2 $1.3M 226k 5.59
Evercore Partners (EVR) 0.2 $1.2M 41k 30.19
Repligen Corporation (RGEN) 0.2 $1.3M 199k 6.28
AZZ Incorporated (AZZ) 0.2 $1.2M 32k 38.44
OraSure Technologies (OSUR) 0.2 $1.2M 173k 7.18
Dawson Geophysical Company 0.2 $1.3M 48k 26.39
Streamline Health Solutions (STRM) 0.2 $1.2M 215k 5.69
Demand Media 0.2 $1.3M 137k 9.29
Affymetrix 0.2 $1.2M 369k 3.17
LOGITECH INTERNATIONAL SA APP Com Stk (LOGI) 0.2 $1.2M 159k 7.54
Aceto Corporation 0.2 $1.2M 120k 10.05
Barrett Business Services (BBSI) 0.2 $1.2M 31k 38.10
Callidus Software 0.2 $1.2M 260k 4.54
Acacia Research Corporation (ACTG) 0.2 $1.2M 46k 25.65
Natural Grocers By Vitamin C (NGVC) 0.2 $1.2M 63k 19.09
Procter & Gamble Company (PG) 0.2 $1.1M 17k 67.89
Big 5 Sporting Goods Corporation (BGFV) 0.2 $1.2M 89k 13.10
Mindspeed Technologies 0.2 $1.1M 244k 4.68
Globe Specialty Metals 0.2 $1.1M 79k 13.75
Hexcel Corporation (HXL) 0.2 $1.1M 41k 26.95
Citi Trends (CTRN) 0.2 $1.1M 79k 13.76
Dyax 0.2 $1.1M 318k 3.48
Jamba 0.2 $1.1M 494k 2.24
PowerSecure International 0.2 $1.1M 137k 7.81
Citigroup (C) 0.2 $1.1M 27k 39.56
Monsanto Company 0.2 $1.0M 11k 94.63
BioMarin Pharmaceutical (BMRN) 0.2 $996k 20k 49.18
Marsh & McLennan Companies (MMC) 0.2 $1.0M 30k 34.48
UnitedHealth (UNH) 0.2 $1.0M 19k 54.22
LivePerson (LPSN) 0.2 $1.0M 77k 13.14
CRA International (CRAI) 0.2 $1.0M 53k 19.77
SurModics (SRDX) 0.2 $1.0M 47k 22.37
GSI Technology (GSIT) 0.2 $1.1M 168k 6.27
Ligand Pharmaceuticals In (LGND) 0.2 $1.0M 50k 20.73
Devon Energy Corporation (DVN) 0.2 $938k 18k 52.06
McDonald's Corporation (MCD) 0.2 $963k 11k 88.19
Pacific Sunwear of California 0.2 $975k 613k 1.59
Anadarko Petroleum Corporation 0.2 $968k 13k 74.28
Pioneer Natural Resources 0.2 $973k 9.1k 106.56
Omnicell (OMCL) 0.2 $974k 66k 14.87
Randgold Resources 0.2 $982k 9.9k 99.19
LeapFrog Enterprises 0.2 $941k 109k 8.63
Banner Corp (BANR) 0.2 $975k 32k 30.74
Guidewire Software (GWRE) 0.2 $954k 32k 29.72
Catamaran 0.2 $964k 21k 47.10
Integrated Device Technology 0.2 $937k 128k 7.30
DreamWorks Animation SKG 0.2 $901k 54k 16.57
NuVasive 0.2 $901k 58k 15.45
ValueVision Media 0.2 $928k 516k 1.80
Wabtec Corporation (WAB) 0.2 $923k 11k 87.54
Greenbrier Companies (GBX) 0.2 $916k 57k 16.17
Fresh Market 0.2 $920k 19k 48.08
Citrix Systems 0.1 $833k 13k 65.59
EMC Corporation 0.1 $833k 33k 25.31
Oil States International (OIS) 0.1 $835k 12k 71.51
Alexion Pharmaceuticals 0.1 $830k 8.9k 93.72
Support 0.1 $866k 208k 4.17
Linkedin Corp 0.1 $861k 7.5k 114.80
Mylan 0.1 $800k 29k 27.45
PerkinElmer (RVTY) 0.1 $783k 25k 31.73
Alliance Data Systems Corporation (BFH) 0.1 $788k 5.4k 144.75
Air Methods Corporation 0.1 $812k 22k 36.91
Energy Recovery (ERII) 0.1 $786k 231k 3.40
Badger Meter (BMI) 0.1 $820k 17k 47.40
Cutera (CUTR) 0.1 $784k 87k 9.00
Manitex International (MNTX) 0.1 $797k 112k 7.14
Neophotonics Corp 0.1 $790k 138k 5.74
Time Warner 0.1 $714k 15k 47.80
National-Oilwell Var 0.1 $753k 11k 68.36
Chico's FAS 0.1 $767k 42k 18.46
Trinity Biotech 0.1 $715k 50k 14.43
Pioneer Energy Services 0.1 $765k 105k 7.26
OSI Systems (OSIS) 0.1 $692k 11k 64.09
Power-One 0.1 $654k 159k 4.11
NeoGenomics (NEO) 0.1 $706k 285k 2.48
Focus Media Holding 0.1 $624k 24k 25.67
Exxon Mobil Corporation (XOM) 0.1 $636k 7.4k 86.48
Wal-Mart Stores (WMT) 0.1 $623k 9.1k 68.21
Novartis (NVS) 0.1 $614k 9.7k 63.27
Tsakos Energy Navigation 0.1 $632k 169k 3.75
Acuity Brands (AYI) 0.1 $632k 9.3k 67.72
Sirius XM Radio 0.1 $650k 225k 2.89
Rockwood Holdings 0.1 $611k 12k 49.47
Agnico (AEM) 0.1 $608k 12k 52.47
Anixter International 0.1 $618k 9.7k 64.00
CECO Environmental (CECO) 0.1 $633k 64k 9.95
Danaher Corporation (DHR) 0.1 $559k 10k 55.90
PDF Solutions (PDFS) 0.1 $581k 42k 13.78
Kinder Morgan (KMI) 0.1 $594k 17k 35.33
Joy Global 0.1 $501k 7.9k 63.74
Aeropostale 0.1 $522k 40k 13.01
Dean Foods Company 0.1 $487k 30k 16.52
Ametek (AME) 0.1 $509k 14k 37.56
FuelCell Energy 0.1 $528k 574k 0.92
BofI Holding 0.1 $503k 18k 27.79
DigitalGlobe 0.1 $499k 20k 24.46
Comcast Corporation (CMCSA) 0.1 $430k 12k 37.32
IAC/InterActive 0.1 $432k 9.2k 47.21
Merck & Co (MRK) 0.1 $456k 11k 40.95
Illinois Tool Works (ITW) 0.1 $456k 7.5k 60.80
Dollar Tree (DLTR) 0.1 $433k 11k 40.59
Illumina (ILMN) 0.1 $433k 7.8k 55.63
Marchex (MCHX) 0.1 $461k 112k 4.11
Mednax (MD) 0.1 $449k 5.6k 79.48
Heska Corporation 0.1 $446k 55k 8.11
American Eagle Outfitters (AEO) 0.1 $416k 20k 20.53
Meru Networks 0.1 $398k 150k 2.65
Campbell Soup Company (CPB) 0.1 $370k 11k 34.86
Compuware Corporation 0.1 $403k 37k 10.87
International Business Machines (IBM) 0.1 $377k 2.0k 191.57
Fastenal Company (FAST) 0.1 $373k 8.0k 46.62
MercadoLibre (MELI) 0.1 $370k 4.7k 78.61
Rosetta Resources 0.1 $408k 9.0k 45.33
First American Financial (FAF) 0.1 $377k 16k 24.08
Intrepid Potash 0.1 $396k 19k 21.29
Changyou 0.1 $417k 16k 26.31
Tile Shop Hldgs (TTSH) 0.1 $423k 25k 16.82
Packaging Corporation of America (PKG) 0.1 $350k 9.1k 38.44
Comcast Corporation 0.1 $353k 9.8k 35.96
Automatic Data Processing (ADP) 0.1 $349k 6.1k 56.93
Mohawk Industries (MHK) 0.1 $362k 4.0k 90.43
Royal Dutch Shell 0.1 $347k 5.0k 69.03
Anheuser-Busch InBev NV (BUD) 0.1 $323k 3.7k 87.34
Teleflex Incorporated (TFX) 0.1 $331k 4.6k 71.38
Trinity Industries (TRN) 0.1 $360k 10k 35.81
Acquity 0.1 $332k 43k 7.72
Gold Fields (GFI) 0.1 $277k 22k 12.50
Green Mountain Coffee Roasters 0.1 $299k 7.2k 41.38
Enterprise Products Partners (EPD) 0.1 $275k 5.5k 50.07
Nordson Corporation (NDSN) 0.1 $311k 4.9k 63.08
Energy Transfer Partners 0.1 $284k 6.6k 42.95
Teradyne (TER) 0.1 $268k 16k 16.92
Mcewen Mining 0.1 $303k 79k 3.84
stock 0.1 $266k 9.2k 28.98
American Express Company (AXP) 0.0 $252k 4.4k 57.44
Abbott Laboratories (ABT) 0.0 $226k 3.5k 65.41
Clean Harbors (CLH) 0.0 $211k 3.8k 54.96
LKQ Corporation (LKQ) 0.0 $221k 11k 21.09
E.I. du Pont de Nemours & Company 0.0 $236k 5.2k 45.05
Everest Re Group (EG) 0.0 $237k 2.2k 110.08
Williams Companies (WMB) 0.0 $208k 6.3k 32.76
Visa (V) 0.0 $212k 1.4k 151.75
Cheniere Energy (LNG) 0.0 $210k 11k 18.78
Ixia 0.0 $250k 15k 16.95
Santarus 0.0 $205k 19k 10.98
MaxLinear (MXL) 0.0 $200k 40k 5.01
Golar Lng Partners Lp unit 0.0 $240k 8.1k 29.80
New Mountain Finance Corp (NMFC) 0.0 $222k 15k 14.88
Xylem (XYL) 0.0 $220k 8.1k 27.09
Jazz Pharmaceuticals (JAZZ) 0.0 $226k 4.2k 53.20
Duke Energy (DUK) 0.0 $219k 3.4k 63.74
Poly 0.0 $173k 17k 10.45
Dynavax Technologies Corporation 0.0 $190k 67k 2.86
Kona Grill 0.0 $179k 21k 8.69
EXACT Sciences Corporation (EXAS) 0.0 $179k 17k 10.58
Tahoe Resources 0.0 $183k 10k 18.30
Maxwell Technologies 0.0 $91k 11k 8.29
Idenix Pharmaceuticals 0.0 $96k 20k 4.84
GenMark Diagnostics 0.0 $90k 10k 9.00
WisdomTree Investments (WT) 0.0 $110k 18k 6.12
Gsv Cap Corp 0.0 $117k 14k 8.46
Neonode 0.0 $124k 26k 4.84
Supervalu 0.0 $65k 26k 2.47
FBR Capital Markets Corporation 0.0 $55k 14k 3.87
Cosi 0.0 $46k 59k 0.78
Joe's Jeans 0.0 $38k 38k 1.01
Amicus Therapeutics (FOLD) 0.0 $81k 30k 2.68
VELTI PLC ST Helier 0.0 $45k 10k 4.50
Kior Inc. Cl A 0.0 $73k 11k 6.40
Roundy's 0.0 $68k 15k 4.45
4068594 Enphase Energy (ENPH) 0.0 $51k 14k 3.65
Urologix (ULGX) 0.0 $25k 36k 0.69