Portolan Capital Management

Portolan Capital Management as of March 31, 2012

Portfolio Holdings for Portolan Capital Management

Portolan Capital Management holds 209 positions in its portfolio as reported in the March 2012 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Abiomed 2.4 $9.2M 414k 22.19
Ellie Mae 2.3 $8.7M 781k 11.16
VELTI PLC ST Helier 2.3 $8.6M 636k 13.55
Web 2.0 $7.4M 515k 14.43
Apple (AAPL) 1.9 $7.0M 12k 599.56
Unisys Corporation (UIS) 1.7 $6.6M 333k 19.72
Kenexa Corporation 1.7 $6.4M 204k 31.24
Virtusa Corporation 1.7 $6.3M 365k 17.27
Altisource Portfolio Solns S reg (ASPS) 1.5 $5.8M 96k 60.64
Carrols Restaurant (TAST) 1.5 $5.8M 378k 15.25
Zale Corporation 1.4 $5.1M 1.7M 3.09
Tessera Technologies 1.3 $5.0M 291k 17.25
Google 1.3 $5.0M 7.8k 641.25
Euronet Worldwide (EEFT) 1.2 $4.7M 226k 20.89
Herbalife Ltd Com Stk (HLF) 1.2 $4.5M 65k 68.83
Guidance Software 1.2 $4.4M 402k 11.05
UnitedHealth (UNH) 1.1 $4.1M 70k 58.94
Capital Senior Living Corporation 1.1 $4.2M 449k 9.24
Crocs (CROX) 1.1 $4.0M 192k 20.92
51job 1.1 $4.0M 71k 56.87
Mercer International (MERC) 1.1 $4.0M 499k 7.99
DSW 1.0 $3.8M 70k 54.77
Dfc Global 1.0 $3.9M 205k 18.87
Shoe Carnival (SCVL) 1.0 $3.8M 119k 32.22
Anika Therapeutics (ANIK) 0.9 $3.6M 284k 12.54
Theravance 0.9 $3.5M 178k 19.50
Nexen 0.9 $3.3M 182k 18.35
CAI International 0.9 $3.2M 178k 18.18
Credit Acceptance (CACC) 0.8 $3.2M 32k 101.00
Central Garden & Pet (CENT) 0.8 $3.2M 342k 9.41
Kodiak Oil & Gas 0.8 $3.2M 321k 9.96
ValueClick 0.8 $3.2M 161k 19.74
Actuate Corporation 0.8 $3.2M 507k 6.28
School Specialty 0.8 $3.1M 873k 3.54
Ocwen Financial Corporation 0.8 $3.0M 194k 15.63
Rochester Medical Corporation 0.8 $3.0M 304k 9.81
Encore Capital (ECPG) 0.8 $2.9M 128k 22.55
Pfizer (PFE) 0.8 $2.9M 126k 22.64
Casella Waste Systems (CWST) 0.8 $2.8M 457k 6.23
NII Holdings 0.7 $2.8M 152k 18.31
Casual Male Retail 0.7 $2.8M 829k 3.36
Whiting Petroleum Corporation 0.7 $2.8M 51k 54.29
Descartes Sys Grp (DSGX) 0.7 $2.6M 298k 8.73
Saba Software 0.7 $2.6M 261k 9.81
Aon Corporation 0.7 $2.5M 51k 49.06
SLM Corporation (SLM) 0.6 $2.4M 154k 15.76
Sunrise Senior Living 0.6 $2.4M 377k 6.32
LivePerson (LPSN) 0.6 $2.3M 139k 16.77
New Oriental Education & Tech 0.6 $2.3M 85k 27.46
Asbury Automotive (ABG) 0.6 $2.3M 85k 27.00
3D Systems Corporation (DDD) 0.6 $2.3M 97k 23.54
Rent-A-Center (UPBD) 0.6 $2.2M 59k 37.75
Northern Oil & Gas 0.6 $2.2M 108k 20.74
Nationstar Mortgage 0.6 $2.2M 155k 14.36
Medifast (MED) 0.6 $2.2M 126k 17.46
Hanesbrands (HBI) 0.6 $2.2M 73k 29.53
Zix Corporation 0.6 $2.2M 741k 2.91
Higher One Holdings 0.6 $2.1M 144k 14.95
Alkermes (ALKS) 0.6 $2.1M 116k 18.55
Cash America International 0.6 $2.1M 44k 47.92
Universal Stainless & Alloy Products (USAP) 0.6 $2.1M 49k 42.72
Fossil 0.5 $2.0M 15k 132.01
Deckers Outdoor Corporation (DECK) 0.5 $2.0M 32k 63.06
Tempur-Pedic International (TPX) 0.5 $2.0M 24k 84.42
Collective Brands 0.5 $1.9M 98k 19.66
Visa (V) 0.5 $1.9M 16k 118.00
iGATE Corporation 0.5 $1.9M 112k 16.76
Biogen Idec (BIIB) 0.5 $1.9M 15k 126.02
Emeritus Corporation 0.5 $1.9M 105k 17.66
Aetna 0.5 $1.8M 36k 50.16
CEC Entertainment 0.5 $1.8M 48k 37.91
Steven Madden (SHOO) 0.5 $1.8M 42k 42.74
Quality Distribution 0.5 $1.7M 126k 13.78
Walter Energy 0.5 $1.7M 29k 59.19
Keynote Systems 0.5 $1.7M 86k 19.76
Hess (HES) 0.4 $1.6M 28k 58.96
Walter Investment Management 0.4 $1.7M 73k 22.55
Rock-Tenn Company 0.4 $1.6M 24k 67.57
PHH Corporation 0.4 $1.6M 102k 15.47
Iconix Brand 0.4 $1.6M 92k 17.38
Signet Jewelers (SIG) 0.4 $1.6M 33k 47.27
Home Loan Servicing Solution ord 0.4 $1.6M 115k 13.94
Polypore International 0.4 $1.6M 44k 35.15
Oasis Petroleum 0.4 $1.6M 51k 30.83
Covenant Transportation (CVLG) 0.4 $1.5M 483k 3.20
Regions Financial Corporation (RF) 0.4 $1.5M 229k 6.59
Cabela's Incorporated 0.4 $1.5M 39k 38.15
Standard Pacific 0.4 $1.5M 333k 4.46
ACCO Brands Corporation (ACCO) 0.4 $1.5M 120k 12.41
Owens Corning (OC) 0.4 $1.4M 39k 36.02
Microsoft Corporation (MSFT) 0.4 $1.4M 44k 32.26
Western Digital (WDC) 0.4 $1.4M 34k 41.40
Merck & Co (MRK) 0.4 $1.4M 36k 38.39
Sequenom 0.4 $1.4M 343k 4.07
Aspen Technology 0.4 $1.4M 68k 20.53
Bitauto Hldg 0.4 $1.4M 268k 5.30
Xpo Logistics Inc equity (XPO) 0.4 $1.4M 84k 16.80
Valassis Communications 0.4 $1.3M 58k 23.01
Wynn Resorts (WYNN) 0.4 $1.4M 11k 124.85
Seagate Technology Com Stk 0.4 $1.4M 51k 26.96
Western Alliance Bancorporation (WAL) 0.4 $1.4M 159k 8.47
Cost Plus 0.3 $1.3M 74k 17.90
Federal Agricultural Mortgage (AGM) 0.3 $1.3M 58k 22.70
Suntrust Banks Inc $1.00 Par Cmn 0.3 $1.3M 53k 24.16
Lithia Motors (LAD) 0.3 $1.3M 49k 26.20
Novartis (NVS) 0.3 $1.3M 23k 55.42
Hewlett-Packard Company 0.3 $1.3M 53k 23.83
Tenne 0.3 $1.3M 34k 37.16
Matrix Service Company (MTRX) 0.3 $1.2M 88k 14.01
Zogenix 0.3 $1.2M 624k 2.00
C.R. Bard 0.3 $1.2M 12k 98.68
Sonic Automotive (SAH) 0.3 $1.2M 64k 17.92
Lionbridge Technologies 0.3 $1.2M 407k 2.88
Sagent Pharmaceuticals 0.3 $1.2M 67k 17.87
Mattersight Corp 0.3 $1.2M 137k 8.50
Walt Disney Company (DIS) 0.3 $1.1M 26k 43.78
Affymetrix 0.3 $1.1M 265k 4.27
EMC Corporation 0.3 $1.1M 38k 29.87
Cubist Pharmaceuticals 0.3 $1.1M 26k 43.24
Stoneridge (SRI) 0.3 $1.1M 114k 9.89
Smith & Wesson Holding Corporation 0.3 $1.1M 148k 7.75
Parlux Fragrances 0.3 $1.1M 197k 5.66
Comerica Incorporated (CMA) 0.3 $1.1M 33k 32.36
Weatherford International Lt reg 0.3 $1.1M 70k 15.10
Citigroup (C) 0.3 $1.1M 29k 36.55
Oxford Industries (OXM) 0.3 $1.0M 20k 50.84
Builders FirstSource (BLDR) 0.3 $1.0M 244k 4.23
Perfumania Holdings 0.3 $1.0M 110k 9.26
Citi Trends (CTRN) 0.3 $979k 85k 11.46
Adobe Systems Incorporated (ADBE) 0.2 $951k 28k 34.30
Synovus Financial 0.2 $942k 460k 2.05
Simcere Pharmaceutical 0.2 $929k 98k 9.44
MicroStrategy Incorporated (MSTR) 0.2 $935k 6.7k 139.97
Salix Pharmaceuticals 0.2 $955k 18k 52.49
KVH Industries (KVHI) 0.2 $946k 90k 10.50
Baxter International (BAX) 0.2 $894k 15k 59.79
Lumber Liquidators Holdings (LL) 0.2 $894k 36k 25.10
Kirby Corporation (KEX) 0.2 $919k 14k 65.78
Talisman Energy Inc Com Stk 0.2 $895k 71k 12.60
QuinStreet (QNST) 0.2 $917k 87k 10.49
WuXi PharmaTech 0.2 $888k 62k 14.40
Pain Therapeutics 0.2 $883k 244k 3.62
Hasbro (HAS) 0.2 $837k 23k 36.72
Liz Claiborne 0.2 $821k 61k 13.37
CVS Caremark Corporation (CVS) 0.2 $822k 18k 44.79
Avis Budget (CAR) 0.2 $830k 59k 14.15
Elizabeth Arden 0.2 $827k 24k 35.00
Qiagen 0.2 $826k 53k 15.56
First Cash Financial Services 0.2 $815k 19k 42.88
Inter Parfums (IPAR) 0.2 $844k 54k 15.69
Famous Dave's of America 0.2 $850k 73k 11.60
Cisco Systems (CSCO) 0.2 $806k 38k 21.15
K-Swiss 0.2 $793k 194k 4.10
Charming Shoppes 0.2 $801k 136k 5.90
Xueda Education 0.2 $796k 194k 4.10
Yandex Nv-a (YNDX) 0.2 $803k 30k 26.86
Becton, Dickinson and (BDX) 0.2 $768k 9.9k 77.61
Teleflex Incorporated (TFX) 0.2 $767k 13k 61.11
Progress Software Corporation (PRGS) 0.2 $700k 30k 23.60
Wolverine World Wide (WWW) 0.2 $731k 20k 37.19
Microsemi Corporation 0.2 $729k 34k 21.44
Zions Bancorporation (ZION) 0.2 $721k 34k 21.45
Linkedin Corp 0.2 $702k 6.9k 102.05
Xylem (XYL) 0.2 $712k 26k 27.74
NetApp (NTAP) 0.2 $668k 15k 44.79
DISH Network 0.2 $699k 21k 32.92
Orbcomm 0.2 $675k 175k 3.85
Corning Incorporated (GLW) 0.2 $646k 46k 14.08
Checkpoint Systems 0.2 $635k 56k 11.28
Brocade Communications Systems 0.2 $637k 111k 5.75
1-800-flowers (FLWS) 0.2 $632k 209k 3.03
Hyatt Hotels Corporation (H) 0.2 $643k 15k 42.71
Mohawk Industries (MHK) 0.2 $619k 9.3k 66.51
Goodyear Tire & Rubber Company (GT) 0.2 $620k 55k 11.21
Maidenform Brands 0.2 $610k 27k 22.49
Jos. A. Bank Clothiers 0.2 $612k 12k 50.42
Huntington Bancshares Incorporated (HBAN) 0.1 $564k 88k 6.44
MKS Instruments (MKSI) 0.1 $568k 19k 29.51
Gt Solar Int'l 0.1 $553k 67k 8.27
Electronic Arts (EA) 0.1 $516k 31k 16.49
Hospira 0.1 $509k 14k 37.38
Cognizant Technology Solutions (CTSH) 0.1 $453k 5.9k 76.90
Casey's General Stores (CASY) 0.1 $463k 8.3k 55.50
Ball Corporation (BALL) 0.1 $460k 11k 42.88
Edwards Lifesciences (EW) 0.1 $414k 5.7k 72.71
Baker Hughes Incorporated 0.1 $425k 10k 41.95
Take-Two Interactive Software (TTWO) 0.1 $405k 26k 15.38
Genes (GCO) 0.1 $434k 6.1k 71.69
Horsehead Holding 0.1 $405k 36k 11.38
RF Micro Devices 0.1 $423k 85k 4.99
Computer Programs & Systems (TBRG) 0.1 $418k 7.4k 56.51
Abraxas Petroleum 0.1 $423k 136k 3.12
Generac Holdings (GNRC) 0.1 $415k 17k 24.54
United Stationers 0.1 $393k 13k 30.99
Bottomline Technologies 0.1 $373k 13k 27.92
ShangPharma 0.1 $369k 46k 8.11
J Global (ZD) 0.1 $381k 13k 28.65
Teva Pharmaceutical Industries (TEVA) 0.1 $337k 7.5k 45.04
Archer Daniels Midland Company (ADM) 0.1 $346k 11k 31.66
Occidental Petroleum Corporation (OXY) 0.1 $355k 3.7k 95.12
Exelis 0.1 $358k 29k 12.52
Avnet (AVT) 0.1 $316k 8.7k 36.41
Boise 0.1 $317k 39k 8.21
Stage Stores 0.1 $280k 17k 16.24
Weight Watchers International 0.1 $235k 3.1k 77.05
NCR Corporation (VYX) 0.1 $212k 9.8k 21.70
Amazon (AMZN) 0.1 $213k 1.1k 202.86
Tripadvisor (TRIP) 0.1 $234k 6.6k 35.65
Great Lakes Dredge & Dock Corporation (GLDD) 0.0 $143k 20k 7.24