Portolan Capital Management

Portolan Capital Management as of Dec. 31, 2011

Portfolio Holdings for Portolan Capital Management

Portolan Capital Management holds 185 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
Web 2.5 $8.1M 710k 11.45
Abiomed 2.4 $8.0M 433k 18.47
Google 2.1 $6.8M 11k 645.88
Apple (AAPL) 1.9 $6.4M 16k 405.01
VELTI PLC ST Helier 1.8 $5.8M 859k 6.80
Western Union Company (WU) 1.8 $5.8M 318k 18.26
Virtusa Corporation 1.6 $5.4M 375k 14.48
J Global (ZD) 1.6 $5.2M 186k 28.14
Altisource Portfolio Solns S reg 1.6 $5.2M 103k 50.18
Ellie Mae 1.3 $4.4M 771k 5.65
Oracle Corporation (ORCL) 1.3 $4.2M 162k 25.65
Kenexa Corporation 1.3 $4.2M 157k 26.70
Credit Acceptance (CACC) 1.2 $4.0M 49k 82.27
Encore Capital (ECPG) 1.2 $4.0M 187k 21.26
Rochester Medical Corporation 1.2 $3.9M 470k 8.30
Dfc Global 1.2 $3.9M 214k 18.06
UnitedHealth (UNH) 1.2 $3.8M 76k 50.68
CVS Caremark Corporation (CVS) 1.1 $3.7M 92k 40.78
Herbalife Ltd Com Stk (HLF) 1.1 $3.7M 72k 51.68
Midas 1.1 $3.6M 423k 8.59
Teva Pharmaceutical Industries (TEVA) 1.1 $3.6M 88k 40.36
Pfizer (PFE) 1.1 $3.5M 160k 21.64
Zale Corporation 1.1 $3.5M 917k 3.81
DSW 1.0 $3.4M 78k 44.21
Anika Therapeutics (ANIK) 1.0 $3.4M 346k 9.80
51job 1.0 $3.3M 79k 41.94
Weight Watchers International 1.0 $3.2M 58k 55.01
Aon Corporation 1.0 $3.2M 68k 46.81
Signet Jewelers (SIG) 1.0 $3.2M 72k 43.96
Zix Corporation 0.9 $3.2M 1.1M 2.82
Microsoft Corporation (MSFT) 0.9 $3.0M 114k 25.96
Tempur-Pedic International (SGI) 0.9 $2.9M 56k 52.53
Sunrise Senior Living 0.9 $2.9M 447k 6.48
New Oriental Education & Tech 0.9 $2.8M 118k 24.05
Pep Boys - Manny, Moe & Jack 0.8 $2.8M 257k 11.00
Casella Waste Systems (CWST) 0.8 $2.7M 428k 6.40
Euronet Worldwide (EEFT) 0.8 $2.7M 146k 18.48
Ocwen Financial Corporation 0.8 $2.7M 189k 14.48
Saba Software 0.8 $2.6M 335k 7.89
SLM Corporation (SLM) 0.8 $2.6M 196k 13.40
Fossil 0.8 $2.6M 33k 79.37
Computer Programs & Systems (TBRG) 0.8 $2.6M 51k 51.11
Nexen 0.8 $2.5M 157k 15.91
Asbury Automotive (ABG) 0.8 $2.5M 115k 21.56
Guidance Software 0.8 $2.5M 384k 6.48
iGATE Corporation 0.7 $2.4M 154k 15.73
ValueClick 0.7 $2.4M 146k 16.29
Tessera Technologies 0.7 $2.3M 139k 16.75
Casual Male Retail 0.7 $2.3M 678k 3.42
Visa (V) 0.7 $2.3M 23k 101.51
Universal Stainless & Alloy Products (USAP) 0.7 $2.2M 59k 37.36
Novartis (NVS) 0.7 $2.1M 38k 57.18
3D Systems Corporation (DDD) 0.7 $2.2M 151k 14.40
Aetna 0.6 $2.1M 51k 42.19
Actuate Corporation 0.6 $2.1M 360k 5.86
Unisys Corporation (UIS) 0.6 $2.1M 108k 19.71
Descartes Sys Grp (DSGX) 0.6 $2.1M 298k 7.16
Adobe Systems Incorporated (ADBE) 0.6 $2.1M 74k 28.26
Capital Senior Living Corporation 0.6 $2.0M 258k 7.94
Symantec Corporation 0.6 $2.0M 130k 15.65
Whiting Petroleum Corporation 0.6 $2.0M 43k 46.69
Suncor Energy (SU) 0.6 $1.9M 67k 28.82
C.R. Bard 0.6 $1.9M 23k 85.51
Biogen Idec (BIIB) 0.6 $1.9M 17k 110.03
Cubist Pharmaceuticals 0.6 $1.9M 49k 39.62
Cott Corp 0.6 $1.8M 295k 6.26
Seagate Technology Com Stk 0.6 $1.9M 113k 16.40
Northern Oil & Gas 0.6 $1.9M 77k 23.98
Crocs (CROX) 0.6 $1.8M 124k 14.77
Merck & Co (MRK) 0.6 $1.8M 49k 37.70
Genes (GCO) 0.6 $1.8M 29k 61.74
Western Digital (WDC) 0.5 $1.8M 58k 30.95
Baxter International (BAX) 0.5 $1.8M 36k 49.47
CAI International 0.5 $1.8M 115k 15.46
Lexmark International 0.5 $1.7M 52k 33.07
DemandTec 0.5 $1.7M 128k 13.17
Walt Disney Company (DIS) 0.5 $1.7M 44k 37.50
Cooper Companies 0.5 $1.6M 23k 70.53
CEC Entertainment 0.5 $1.7M 48k 34.45
Aspen Technology 0.5 $1.7M 95k 17.35
Shoe Carnival (SCVL) 0.5 $1.6M 63k 25.70
Sonic Automotive (SAH) 0.5 $1.6M 110k 14.81
Fiserv (FI) 0.5 $1.6M 27k 58.73
Emeritus Corporation 0.5 $1.5M 86k 17.51
Becton, Dickinson and (BDX) 0.5 $1.5M 20k 74.73
Covidien 0.5 $1.5M 33k 45.02
Liz Claiborne 0.4 $1.4M 166k 8.63
Iconix Brand 0.4 $1.4M 87k 16.29
Covenant Transportation (CVLG) 0.4 $1.4M 483k 2.97
PHH Corporation 0.4 $1.4M 129k 10.70
Schweitzer-Mauduit International (MATV) 0.4 $1.4M 21k 66.46
Hewlett-Packard Company 0.4 $1.4M 53k 25.76
LivePerson (LPSN) 0.4 $1.3M 107k 12.55
Salix Pharmaceuticals 0.4 $1.4M 29k 47.86
AboveNet 0.4 $1.4M 21k 65.01
Collective Brands 0.4 $1.3M 93k 14.37
Xpo Logistics Inc equity (XPO) 0.4 $1.3M 104k 12.35
O'Charley's 0.4 $1.3M 230k 5.49
Keynote Systems 0.4 $1.3M 61k 20.53
Medifast (MED) 0.4 $1.2M 90k 13.72
Zillow 0.4 $1.2M 55k 22.48
DISH Network 0.4 $1.2M 42k 28.49
McKesson Corporation (MCK) 0.3 $1.2M 15k 77.88
Charming Shoppes 0.3 $1.1M 234k 4.90
Cabela's Incorporated 0.3 $1.1M 44k 25.43
Staples 0.3 $1.1M 81k 13.89
Teleflex Incorporated (TFX) 0.3 $1.1M 19k 61.28
Weatherford International Lt reg 0.3 $1.1M 77k 14.64
At&t (T) 0.3 $1.1M 36k 30.25
Avnet (AVT) 0.3 $1.1M 34k 31.08
Lithia Motors (LAD) 0.3 $1.1M 49k 21.86
Exxon Mobil Corporation (XOM) 0.3 $1.0M 12k 84.72
Cisco Systems (CSCO) 0.3 $1.0M 57k 18.09
United Stationers 0.3 $1.0M 31k 32.56
WuXi PharmaTech 0.3 $1.0M 93k 11.04
Talisman Energy Inc Com Stk 0.3 $1.0M 80k 12.75
Tenne 0.3 $1.0M 34k 29.79
Stoneridge (SRI) 0.3 $998k 118k 8.43
KVH Industries (KVHI) 0.3 $1.0M 130k 7.78
Summer Infant 0.3 $990k 141k 7.04
Hospira 0.3 $937k 31k 30.36
Simcere Pharmaceutical 0.3 $925k 98k 9.40
Steven Madden (SHOO) 0.3 $936k 27k 34.50
Pain Therapeutics 0.3 $927k 244k 3.80
Bitauto Hldg 0.3 $921k 230k 4.00
Cost Plus 0.3 $908k 93k 9.75
EMC Corporation 0.3 $910k 42k 21.54
Hackett (HCKT) 0.3 $893k 239k 3.74
Baker Hughes Incorporated 0.3 $878k 18k 48.61
Oxford Industries (OXM) 0.3 $861k 19k 45.12
Corning Incorporated (GLW) 0.2 $807k 62k 12.97
Verisign (VRSN) 0.2 $811k 23k 35.74
VCA Antech 0.2 $797k 40k 19.75
Rock-Tenn Company 0.2 $803k 14k 57.73
Higher One Holdings 0.2 $797k 43k 18.43
Cogent Communications (CCOI) 0.2 $756k 45k 16.89
Bottomline Technologies 0.2 $773k 33k 23.17
Smith & Wesson Holding Corporation 0.2 $777k 178k 4.36
Cognizant Technology Solutions (CTSH) 0.2 $716k 11k 64.27
Archer Daniels Midland Company (ADM) 0.2 $721k 25k 28.62
Regis Corporation 0.2 $727k 44k 16.55
Valassis Communications 0.2 $719k 37k 19.23
NCR Corporation (VYX) 0.2 $740k 45k 16.45
Microsemi Corporation 0.2 $720k 43k 16.76
Cash America International 0.2 $719k 15k 46.62
Johnson Controls 0.2 $683k 22k 31.26
Fidelity National Information Services (FIS) 0.2 $652k 25k 26.59
Xylem (XYL) 0.2 $659k 26k 25.67
Ritchie Bros. Auctioneers Inco 0.2 $616k 28k 22.07
Abraxas Petroleum 0.2 $644k 195k 3.30
Convio 0.2 $630k 57k 11.05
Mattersight Corp 0.2 $636k 137k 4.65
Exion Shs Etf Tr Dly Fin Bear dded 0.2 $604k 16k 37.34
Amgen (AMGN) 0.2 $574k 8.9k 64.18
Stryker Corporation (SYK) 0.2 $548k 11k 49.69
GeoEye 0.2 $558k 25k 22.23
Denny's Corporation (DENN) 0.2 $536k 143k 3.76
Solera Holdings 0.2 $543k 12k 44.51
Hess (HES) 0.2 $535k 9.4k 56.75
Schlumberger (SLB) 0.2 $517k 7.6k 68.26
MKS Instruments (MKSI) 0.2 $536k 19k 27.85
BioMed Realty Trust 0.2 $536k 30k 18.08
Ball Corporation (BALL) 0.2 $546k 15k 35.74
Federal Agricultural Mortgage (AGM) 0.1 $491k 27k 18.01
Netflix (NFLX) 0.1 $460k 6.6k 69.36
Kirby Corporation (KEX) 0.1 $449k 6.8k 65.91
First Cash Financial Services 0.1 $470k 13k 35.12
Direxion Shs Etf Tr dly tech bear 3x 0.1 $462k 28k 16.29
Boise 0.1 $439k 62k 7.11
Acadia Healthcare (ACHC) 0.1 $424k 43k 9.96
Buckeye Technologies 0.1 $407k 12k 33.41
Deckers Outdoor Corporation (DECK) 0.1 $411k 5.4k 75.61
Occidental Petroleum Corporation (OXY) 0.1 $350k 3.7k 93.78
Alkermes (ALKS) 0.1 $377k 22k 17.36
Avis Budget (CAR) 0.1 $323k 30k 10.72
ShangPharma 0.1 $331k 46k 7.27
Lj International Inc. ord 0.1 $319k 166k 1.92
Rex American Resources (REX) 0.1 $283k 13k 22.07
Gt Solar Int'l 0.1 $294k 41k 7.23
Exelis 0.1 $259k 29k 9.06
Stage Stores 0.1 $239k 17k 13.86
Destination Maternity Corporation 0.1 $229k 14k 16.72
iShares FTSE/Xinhua China 25 Index (FXI) 0.1 $215k 2.0k 107.50
ChinaEdu Corporation (CEDU) 0.0 $140k 24k 5.77
Great Lakes Dredge & Dock Corporation (GLDD) 0.0 $110k 20k 5.57