Portolan Capital Management

Portolan Capital Management as of March 31, 2011

Portfolio Holdings for Portolan Capital Management

Portolan Capital Management holds 219 positions in its portfolio as reported in the March 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Abiomed 3.2 $16M 1.1M 14.53
LivePerson (LPSN) 1.9 $9.5M 751k 12.64
Radiant Systems 1.8 $8.8M 496k 17.68
Medifast (MED) 1.7 $8.2M 417k 19.75
Fossil 1.6 $8.0M 86k 93.65
Summer Infant 1.5 $7.3M 914k 8.00
Virtusa Corporation 1.5 $7.3M 389k 18.73
Genworth Financial (GNW) 1.4 $6.9M 513k 13.46
Mercer International (MERC) 1.4 $6.7M 495k 13.55
Web 1.3 $6.7M 457k 14.57
Buckeye Technologies 1.3 $6.5M 238k 27.23
Rochester Medical Corporation 1.3 $6.5M 563k 11.48
Destination Maternity Corporation 1.3 $6.3M 272k 23.07
Tuesday Morning Corporation 1.3 $6.2M 1.3M 4.90
Herbalife Ltd Com Stk (HLF) 1.2 $6.0M 74k 81.35
Weatherford International Lt reg 1.1 $5.6M 249k 22.60
KVH Industries (KVHI) 1.1 $5.4M 359k 15.12
MGIC Investment (MTG) 1.0 $5.1M 579k 8.89
Suncor Energy (SU) 1.0 $5.1M 114k 44.84
Hittite Microwave Corporation 1.0 $4.9M 78k 63.76
Five Star Quality Care 1.0 $4.9M 602k 8.13
CAI International 1.0 $4.9M 190k 25.86
MediaMind Technologies (MDMD) 1.0 $4.8M 351k 13.81
Gafisa SA 1.0 $4.8M 370k 12.84
Convio 1.0 $4.8M 412k 11.60
CEC Entertainment 0.9 $4.7M 125k 37.73
Federal-Mogul Corporation 0.9 $4.6M 184k 24.90
Epicor Software Corporation 0.9 $4.5M 403k 11.07
China Yuchai Intl (CYD) 0.9 $4.5M 153k 29.33
Nexen 0.9 $4.4M 176k 24.92
Hess (HES) 0.9 $4.3M 51k 85.22
Gibraltar Industries (ROCK) 0.8 $4.2M 355k 11.93
Saba Software 0.8 $4.0M 407k 9.83
Kodiak Oil & Gas 0.8 $4.0M 601k 6.70
Tupperware Brands Corporation 0.8 $4.0M 66k 59.71
Micron Technology (MU) 0.8 $3.9M 339k 11.47
Ness Technologies 0.8 $3.9M 605k 6.40
SunPower Corporation 0.8 $3.7M 217k 17.14
Gaiam 0.7 $3.6M 552k 6.60
Chiquita Brands International 0.7 $3.6M 236k 15.34
Materion Corporation (MTRN) 0.7 $3.6M 89k 40.80
WuXi PharmaTech 0.7 $3.5M 229k 15.46
Carrols Restaurant 0.7 $3.6M 384k 9.27
Casual Male Retail 0.7 $3.5M 716k 4.91
Lionbridge Technologies 0.7 $3.5M 1.0M 3.43
NCI Building Systems 0.7 $3.4M 265k 12.67
Rock-Tenn Company 0.7 $3.3M 48k 69.35
U.S. Auto Parts Network 0.7 $3.3M 378k 8.70
Simcere Pharmaceutical 0.7 $3.2M 251k 12.92
Sonic Automotive (SAH) 0.6 $3.1M 224k 14.01
Commercial Vehicle (CVGI) 0.6 $3.1M 176k 17.84
ShangPharma 0.6 $3.1M 259k 12.11
Lj International Inc. ord 0.6 $2.9M 740k 3.94
Ford Motor Company (F) 0.6 $2.9M 193k 14.91
ViaSat (VSAT) 0.6 $2.9M 72k 39.84
Federal Agricultural Mortgage (AGM) 0.6 $2.9M 151k 19.11
Geokinetics 0.6 $2.9M 340k 8.45
DSW 0.6 $2.8M 71k 39.96
Dollar Financial 0.6 $2.8M 133k 20.75
Oxford Industries (OXM) 0.6 $2.8M 81k 34.19
Syntel 0.5 $2.7M 51k 52.23
Hersha Hospitality Trust 0.5 $2.6M 442k 5.94
Pain Therapeutics 0.5 $2.6M 276k 9.56
Deckers Outdoor Corporation (DECK) 0.5 $2.6M 30k 86.15
3SBio (SSRX) 0.5 $2.6M 148k 17.29
Huntington Bancshares Incorporated (HBAN) 0.5 $2.5M 374k 6.64
Progress Software Corporation (PRGS) 0.5 $2.5M 85k 29.09
Google 0.5 $2.5M 4.2k 586.85
Wabash National Corporation (WNC) 0.5 $2.5M 214k 11.58
DURECT Corporation 0.5 $2.5M 687k 3.60
Microsoft Corporation (MSFT) 0.5 $2.4M 94k 25.40
Aspen Technology 0.5 $2.4M 158k 14.99
eLoyalty Corporation (ELOY) 0.5 $2.4M 321k 7.42
iGATE Corporation 0.5 $2.3M 124k 18.77
Ocwen Financial Corporation 0.5 $2.3M 211k 11.02
ChinaEdu Corporation (CEDU) 0.5 $2.3M 310k 7.47
Iconix Brand 0.5 $2.3M 106k 21.48
Casella Waste Systems (CWST) 0.5 $2.3M 318k 7.17
Jos. A. Bank Clothiers 0.5 $2.2M 44k 50.88
Marlin Business Services 0.5 $2.2M 181k 12.34
Peabody Energy Corporation 0.4 $2.2M 30k 71.95
Johnson Controls 0.4 $2.1M 52k 41.56
Entegris (ENTG) 0.4 $2.1M 238k 8.78
Cost Plus 0.4 $2.1M 210k 9.82
NCR Corporation (VYX) 0.4 $2.1M 109k 18.84
Donaldson Company (DCI) 0.4 $2.1M 34k 61.30
USANA Health Sciences (USNA) 0.4 $2.1M 61k 34.51
Sealy Corporation 0.4 $2.1M 825k 2.54
American Railcar Industries 0.4 $2.0M 81k 24.95
Euronet Worldwide (EEFT) 0.4 $2.0M 105k 19.33
Guidance Software 0.4 $2.0M 244k 8.38
Pulte (PHM) 0.4 $2.0M 267k 7.40
Xerox Corporation 0.4 $2.0M 184k 10.65
Research In Motion 0.4 $2.0M 35k 56.54
Beazer Homes USA 0.4 $1.9M 411k 4.57
Olin Corporation (OLN) 0.4 $1.9M 82k 22.92
Boise 0.4 $1.9M 204k 9.16
Alkermes 0.4 $1.9M 146k 12.95
LeapFrog Enterprises 0.4 $1.9M 441k 4.32
1-800-flowers (FLWS) 0.4 $1.9M 563k 3.30
Motorcar Parts of America (MPAA) 0.4 $1.9M 135k 13.98
Pep Boys - Manny, Moe & Jack 0.4 $1.8M 143k 12.71
Limelight Networks 0.4 $1.8M 254k 7.16
Clarcor 0.4 $1.8M 39k 44.93
PDF Solutions (PDFS) 0.4 $1.8M 272k 6.65
O'Charley's 0.3 $1.8M 294k 5.97
Comerica Incorporated (CMA) 0.3 $1.7M 46k 36.72
Strategic Hotels & Resorts 0.3 $1.7M 261k 6.45
China Kanghui Holdings 0.3 $1.7M 97k 17.51
Yum! Brands (YUM) 0.3 $1.6M 32k 51.39
Magna Intl Inc cl a (MGA) 0.3 $1.6M 34k 47.92
Methanex Corp (MEOH) 0.3 $1.6M 52k 31.24
Marathon Oil Corporation (MRO) 0.3 $1.6M 31k 53.30
Anika Therapeutics (ANIK) 0.3 $1.6M 184k 8.96
Tenne 0.3 $1.6M 37k 42.46
Crawford & Company (CRD.B) 0.3 $1.6M 336k 4.76
Bitauto Hldg 0.3 $1.6M 131k 11.95
Altisource Portfolio Solns S reg 0.3 $1.5M 49k 30.68
SLM Corporation (SLM) 0.3 $1.5M 100k 15.30
Apple (AAPL) 0.3 $1.5M 4.4k 348.45
Modine Manufacturing (MOD) 0.3 $1.6M 96k 16.14
Xueda Education 0.3 $1.5M 160k 9.56
Buckle (BKE) 0.3 $1.5M 37k 40.39
Citi 0.3 $1.5M 333k 4.42
Pmi Group 0.3 $1.5M 557k 2.70
Support 0.3 $1.5M 287k 5.19
Crawford & Company (CRD.A) 0.3 $1.5M 441k 3.38
Christopher & Banks Corporation (CBKCQ) 0.3 $1.4M 219k 6.48
ULTRAPETROL BAHAMAS LTD COM Stk (ULTRF) 0.3 $1.4M 279k 5.08
PNC Financial Services (PNC) 0.3 $1.4M 22k 63.01
Hewlett-Packard Company 0.3 $1.4M 34k 40.97
ITT Corporation 0.3 $1.4M 23k 60.03
California Pizza Kitchen 0.3 $1.4M 81k 16.88
Lexmark International 0.3 $1.3M 35k 37.04
New York Community Ban 0.3 $1.3M 76k 17.27
American Axle & Manufact. Holdings (AXL) 0.3 $1.3M 103k 12.59
Knoll 0.3 $1.3M 61k 20.97
Alliance Data Systems Corporation (BFH) 0.2 $1.2M 14k 85.92
Republic Services (RSG) 0.2 $1.2M 40k 30.04
Hertz Global Holdings 0.2 $1.2M 74k 15.63
America's Car-Mart (CRMT) 0.2 $1.1M 43k 25.79
M/I Homes (MHO) 0.2 $1.1M 75k 14.99
Abraxas Petroleum 0.2 $1.1M 195k 5.84
Ruth's Hospitality 0.2 $1.1M 222k 5.16
L.B. Foster Company (FSTR) 0.2 $1.2M 27k 43.09
Dana Holding Corporation (DAN) 0.2 $1.1M 64k 17.39
Fidelity National Information Services (FIS) 0.2 $1.1M 33k 32.69
Wet Seal 0.2 $1.1M 259k 4.28
Hackett (HCKT) 0.2 $1.1M 282k 3.84
RTI Biologics 0.2 $1.1M 374k 2.86
Western Digital (WDC) 0.2 $1.1M 28k 37.29
Wyndham Worldwide Corporation 0.2 $1.0M 33k 31.81
Microsemi Corporation 0.2 $1.0M 50k 20.71
DISH Network 0.2 $978k 40k 24.35
Marriott International (MAR) 0.2 $984k 28k 35.58
Apogee Enterprises (APOG) 0.2 $999k 76k 13.19
RSC Holdings 0.2 $1.0M 70k 14.38
Build-A-Bear Workshop (BBW) 0.2 $968k 160k 6.05
Baxter International (BAX) 0.2 $962k 18k 53.79
Tree 0.2 $930k 158k 5.89
P.H. Glatfelter Company 0.2 $934k 70k 13.32
Citizen Holdings Co., Ltd. Cmn 0.2 $939k 163k 5.77
DineEquity (DIN) 0.2 $898k 16k 54.97
Skechers USA 0.2 $875k 43k 20.53
Stoneridge (SRI) 0.2 $886k 61k 14.63
3M Company (MMM) 0.2 $835k 8.9k 93.49
Citi Trends (CTRN) 0.2 $819k 37k 22.28
Zale Corporation 0.2 $805k 202k 3.99
Charming Shoppes 0.2 $799k 188k 4.26
Steven Madden (SHOO) 0.2 $784k 17k 46.90
Hsbc Holdings 0.2 $784k 75k 10.51
Collective Brands 0.1 $752k 35k 21.58
Starwood Hotels & Resorts Worldwide 0.1 $733k 13k 58.11
InterContinental Hotels 0.1 $724k 35k 20.72
Alnylam Pharmaceuticals (ALNY) 0.1 $728k 76k 9.56
Cisco Systems (CSCO) 0.1 $703k 41k 17.16
RadioShack Corporation 0.1 $701k 47k 15.01
ValueClick 0.1 $705k 49k 14.46
Diodes Incorporated (DIOD) 0.1 $681k 20k 34.04
Artio Global Investors 0.1 $685k 42k 16.15
Hyatt Hotels Corporation (H) 0.1 $717k 17k 43.03
Gain Capital Holdings 0.1 $635k 83k 7.67
Western Alliance Bancorporation (WAL) 0.1 $579k 70k 8.22
Walter Investment Management 0.1 $585k 36k 16.14
At&t (T) 0.1 $550k 18k 30.58
Hologic (HOLX) 0.1 $522k 24k 22.22
Verizon Communications (VZ) 0.1 $528k 14k 38.56
Starbucks Corporation (SBUX) 0.1 $525k 14k 36.96
NII Holdings 0.1 $555k 13k 41.66
Seagate Technology Com Stk 0.1 $523k 36k 14.40
ModusLink Global Solutions 0.1 $552k 101k 5.47
China Unicom 0.1 $537k 323k 1.66
Coach 0.1 $507k 9.7k 52.06
Celestica 0.1 $519k 48k 10.72
Radian (RDN) 0.1 $474k 70k 6.81
Schweitzer-Mauduit International (MATV) 0.1 $491k 9.7k 50.65
Keynote Systems 0.1 $512k 28k 18.56
QuinStreet (QNST) 0.1 $503k 22k 22.71
Synovus Financial 0.1 $448k 187k 2.40
Glimcher Realty Trust 0.1 $427k 46k 9.24
Ares Capital Corporation (ARCC) 0.1 $464k 27k 16.95
AsiaInfo-Linkage 0.1 $446k 21k 21.66
PHC 0.1 $449k 170k 2.64
Owens Corning (OC) 0.1 $415k 12k 35.97
Bank of America Corporation (BAC) 0.1 $389k 29k 13.32
Nara Ban 0.1 $376k 39k 9.61
China Mobile 0.1 $406k 44k 9.20
Louisiana-Pacific Corporation (LPX) 0.1 $330k 32k 10.49
Vistaprint N V 0.1 $323k 6.2k 51.92
KapStone Paper and Packaging 0.1 $340k 20k 17.17
State Street Corporation (STT) 0.1 $223k 5.0k 45.00
Broadcom Corporation 0.1 $256k 6.5k 39.42
Lithia Motors (LAD) 0.1 $224k 15k 14.61
Generac Holdings (GNRC) 0.1 $235k 12k 20.31
Domtar Corp 0.0 $216k 2.4k 91.64
Rex American Resources (REX) 0.0 $205k 13k 15.99
MGM Resorts International. (MGM) 0.0 $150k 11k 13.14
MCG Capital Corporation 0.0 $70k 11k 6.51
iParty (IPT) 0.0 $27k 105k 0.26