AlphaOne Investment Services

AlphaOne Investment Services as of March 31, 2011

Portfolio Holdings for AlphaOne Investment Services

AlphaOne Investment Services holds 152 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
U.S. Physical Therapy (USPH) 1.8 $4.8M 214k 22.34
Hurco Companies (HURC) 1.8 $4.6M 151k 30.50
Ii-vi 1.7 $4.4M 88k 49.75
Bio-Reference Laboratories 1.6 $4.1M 185k 22.44
Altra Holdings 1.5 $4.0M 170k 23.62
MEDTOX Scientific (MTOX) 1.5 $3.9M 236k 16.41
Mellanox Technologies 1.4 $3.7M 148k 25.23
Citi Trends (CTRN) 1.4 $3.7M 164k 22.29
LaBarge 1.4 $3.6M 206k 17.70
JPMorgan Chase & Co. (JPM) 1.4 $3.6M 79k 46.10
EMS Technologies 1.4 $3.6M 183k 19.65
Limelight Networks 1.4 $3.6M 498k 7.16
Great Lakes Dredge & Dock Corporation (GLDD) 1.4 $3.6M 467k 7.63
Multi-Color Corporation 1.3 $3.4M 168k 20.21
Calamos Asset Management 1.3 $3.3M 202k 16.59
Team 1.3 $3.3M 125k 26.26
MWI Veterinary Supply 1.3 $3.3M 41k 80.68
Knight Transportation 1.2 $3.3M 169k 19.25
DXP Enterprises (DXPE) 1.2 $3.3M 141k 23.08
Merit Medical Systems (MMSI) 1.2 $3.2M 164k 19.62
VeriFone Systems 1.2 $3.2M 58k 54.95
OceanFirst Financial (OCFC) 1.2 $3.1M 224k 13.95
LMI Aerospace 1.2 $3.1M 155k 20.21
WSFS Financial Corporation (WSFS) 1.2 $3.0M 64k 47.10
Colfax Corporation 1.2 $3.0M 132k 22.95
Hanger Orthopedic 1.1 $3.0M 115k 26.03
National Research Corporation (NRCI) 1.1 $2.9M 86k 33.94
AZZ Incorporated (AZZ) 1.1 $2.9M 64k 45.61
IBERIABANK Corporation 1.1 $2.8M 47k 60.13
Natural Gas Services (NGS) 1.1 $2.8M 160k 17.76
GP Strategies Corporation 1.1 $2.8M 206k 13.60
Rimage Corporation 1.0 $2.7M 166k 16.15
Standard Parking Corporation 1.0 $2.7M 152k 17.76
Financial Institutions (FISI) 1.0 $2.7M 153k 17.50
GeoResources 1.0 $2.6M 84k 31.28
Dynamics Research Corporation 1.0 $2.6M 159k 16.35
Raven Industries 1.0 $2.6M 42k 61.41
Radiant Systems 1.0 $2.6M 145k 17.70
Titan Machinery (TITN) 1.0 $2.6M 102k 25.25
Google 1.0 $2.5M 4.3k 586.28
Bryn Mawr Bank 0.9 $2.4M 117k 20.57
Hill International 0.9 $2.3M 429k 5.29
Marten Transport (MRTN) 0.9 $2.2M 101k 22.30
Dawson Geophysical Company 0.9 $2.2M 51k 43.87
KVH Industries (KVHI) 0.8 $2.2M 147k 15.12
Renasant (RNST) 0.8 $2.2M 128k 16.98
HMS Holdings 0.8 $2.2M 27k 81.87
Forrester Research (FORR) 0.8 $2.2M 56k 38.28
West Coast Ban (WCBO) 0.8 $2.1M 605k 3.47
Columbia Banking System (COLB) 0.8 $2.1M 108k 19.17
Douglas Dynamics (PLOW) 0.8 $2.1M 146k 14.26
Interactive Intelligence 0.8 $2.0M 53k 38.71
PDF Solutions (PDFS) 0.8 $2.0M 306k 6.65
Sterling Construction Company (STRL) 0.8 $2.0M 121k 16.88
Transcend Services 0.8 $2.0M 85k 23.99
RPC (RES) 0.8 $2.0M 79k 25.32
Old Dominion Freight Line (ODFL) 0.8 $2.0M 57k 35.10
Vitran Corp 0.8 $2.0M 143k 14.09
Bancorp Rhode Island (BARI) 0.8 $2.0M 64k 30.88
Webster Financial Corporation (WBS) 0.7 $1.8M 86k 21.43
Vocus 0.7 $1.8M 71k 25.86
Methode Electronics (MEI) 0.7 $1.8M 150k 12.08
Glu Mobile 0.7 $1.7M 403k 4.33
Ihs 0.6 $1.7M 19k 88.73
Teleflex Incorporated (TFX) 0.6 $1.6M 28k 57.97
CTPartners Executive Search (CTPR) 0.6 $1.6M 115k 14.15
Supertex 0.6 $1.6M 72k 22.27
Patterson-UTI Energy (PTEN) 0.6 $1.5M 52k 29.40
Bitstream 0.6 $1.5M 242k 6.40
IXYS Corporation 0.6 $1.5M 112k 13.43
Roper Industries (ROP) 0.6 $1.5M 17k 86.44
Exponent (EXPO) 0.6 $1.5M 33k 44.61
Unit Corporation 0.6 $1.5M 23k 61.95
NVE Corporation (NVEC) 0.5 $1.4M 25k 56.33
PAREXEL International Corporation 0.5 $1.4M 54k 24.91
Berry Petroleum Company 0.5 $1.4M 27k 50.46
AECOM Technology Corporation (ACM) 0.5 $1.3M 49k 27.73
Rogers Corporation (ROG) 0.5 $1.3M 29k 45.07
Wright Express Corporation 0.5 $1.3M 26k 51.85
Ultra Petroleum 0.5 $1.3M 26k 49.24
OmniVision Technologies 0.5 $1.3M 36k 35.52
Haemonetics Corporation (HAE) 0.5 $1.3M 19k 65.53
Legacy Ban (LEGC) 0.5 $1.2M 97k 12.78
Neustar 0.5 $1.2M 47k 25.59
Ameres (AMRC) 0.5 $1.2M 85k 14.15
Regal-beloit Corporation (RRX) 0.5 $1.2M 16k 73.80
Bruker Corporation (BRKR) 0.5 $1.2M 57k 20.84
ICU Medical, Incorporated (ICUI) 0.5 $1.2M 27k 43.79
Coherent 0.4 $1.1M 19k 58.09
Spectrum Control 0.4 $1.1M 56k 19.67
Catalyst Health Solutions 0.4 $1.1M 20k 55.92
Park Sterling Bank 0.4 $1.1M 225k 4.85
Gartner (IT) 0.4 $1.1M 26k 41.66
SRA International 0.4 $1.1M 38k 28.36
Bio-Rad Laboratories (BIO) 0.4 $1.1M 9.0k 120.09
BioMarin Pharmaceutical (BMRN) 0.4 $1.0M 42k 25.13
Alpha Natural Resources 0.4 $1.1M 18k 59.38
Tesco Corporation 0.4 $1.0M 48k 21.96
OSI Systems (OSIS) 0.4 $1.0M 28k 37.51
Rovi Corporation 0.4 $1.0M 20k 53.62
DigitalGlobe 0.4 $1.0M 37k 28.03
Itron (ITRI) 0.4 $1.0M 18k 56.46
BioScrip 0.4 $1000k 212k 4.71
Natus Medical 0.4 $996k 59k 16.81
Sirona Dental Systems 0.4 $973k 19k 50.16
Tesoro Corporation 0.4 $944k 35k 26.82
Baidu (BIDU) 0.4 $951k 6.9k 137.83
MB Financial 0.3 $918k 44k 20.97
On Assignment 0.3 $903k 95k 9.46
Hibbett Sports (HIBB) 0.3 $925k 26k 35.81
Salix Pharmaceuticals 0.3 $921k 26k 35.03
Wintrust Financial Corporation (WTFC) 0.3 $895k 24k 36.74
A. O. Smith Corporation (AOS) 0.3 $879k 20k 44.32
International Coal 0.3 $870k 77k 11.30
Blackboard 0.3 $867k 24k 36.25
Expeditors International of Washington (EXPD) 0.3 $841k 17k 50.12
Brookline Ban (BRKL) 0.3 $848k 81k 10.53
United Therapeutics Corporation (UTHR) 0.3 $843k 13k 67.04
Knoll 0.3 $799k 38k 20.97
Medidata Solutions 0.3 $799k 31k 25.56
DealerTrack Holdings 0.3 $783k 34k 22.95
Gra (GGG) 0.3 $760k 17k 45.50
CPI Aerostructures (CVU) 0.3 $763k 50k 15.18
Evercore Partners (EVR) 0.3 $721k 21k 34.29
Gen-Probe Incorporated 0.3 $700k 11k 66.39
Lumber Liquidators Holdings (LLFLQ) 0.3 $716k 29k 25.01
Techne Corporation 0.3 $695k 9.7k 71.64
Maximus (MMS) 0.3 $704k 8.7k 81.16
Microsemi Corporation 0.3 $713k 34k 20.71
PMC-Sierra 0.3 $693k 92k 7.50
Northwest Bancshares (NWBI) 0.3 $698k 56k 12.55
PacWest Ban 0.3 $703k 32k 21.76
Advisory Board Company 0.3 $674k 13k 51.47
First Republic Bank/san F (FRCB) 0.3 $683k 22k 30.90
Bankunited (BKU) 0.3 $685k 24k 28.71
C.H. Robinson Worldwide (CHRW) 0.2 $632k 8.5k 74.10
Booz Allen Hamilton Holding Corporation (BAH) 0.2 $614k 34k 18.01
Daktronics (DAKT) 0.2 $536k 50k 10.75
Peabody Energy Corporation 0.2 $511k 7.1k 71.97
Yum! Brands (YUM) 0.2 $462k 9.0k 51.33
BHP Billiton (BHP) 0.2 $479k 5.0k 95.80
Chinacast Education Corporation (CAST) 0.2 $440k 70k 6.29
Lihua International 0.2 $439k 50k 8.78
Rubicon Technology 0.2 $415k 15k 27.67
Babcock & Wilcox 0.1 $401k 12k 33.42
SM Energy (SM) 0.1 $371k 5.0k 74.20
Nxp Semiconductors N V (NXPI) 0.1 $300k 10k 30.00
Sohu 0.1 $268k 3.0k 89.33
Walter Energy 0.1 $271k 2.0k 135.50
Sina Corporation 0.1 $214k 2.0k 107.00
Duoyuan Global Water 0.1 $203k 350.00 580.00
PLX Technology 0.0 $110k 30k 3.67