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Institutional Investment Manager
AlphaOne Investment Services, LLC
AlphaOne Investment Services, LLC (CIK: 0001482390) incorporated in Delaware, located at 158 W. Gay Street, Suite 300, West Chester, PA. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q2)
Original 13F HR (0001140361-15-031620) filed in 2015.08.13
#
Name
Shares
Value ($)
%
Options
Notes
1 ZYNGA INC 888,500 2,541 0.89%
2 CARDIOME PHARMA CORP 531,493 5,002 1.76%
3 Park Sterling Corp 492,297 3,545 1.25%
4 SUPERNUS PHARMACEUTICALS INC 422,511 7,173 2.52%
5 ATMEL CORP 392,000 3,863 1.36%
6 CECO ENVIRONMENTAL CORP 314,490 3,563 1.25%
7 GTT COMMUNICATIONS INC COM 298,721 7,131 2.51%
8 RINGCENTRAL INC 298,370 5,517 1.94%
9 NOVANTA INC 279,122 4,195 1.48%
10 CALLON PETE CO DEL 275,809 2,294 0.81%
11 INVACARE CORP COM 262,989 5,687 2.00%
12 FEDERAL SIGNAL CORP 252,821 3,771 1.33%
13 CALAMP CORP 238,657 4,357 1.53%
14 STERLING BANCORP DEL COM 231,700 3,405 1.20%
15 HERITAGE FINL CORP WASH COM 224,708 4,016 1.41%
16 PACIFIC CONTINENTAL CORP 208,226 2,817 0.99%
17 RPC INC 195,334 2,701 0.95%
18 Enterprise Finl Svcs Corp 187,109 4,259 1.50%
19 AVG Technologies NV 186,100 5,064 1.78%
20 NN Inc Com 179,755 4,589 1.61%
21 BANK AMER CORP 175,100 2,980 1.05%
22 DEL FRISCOS RESTAURANT GROUP COM 172,500 3,214 1.13%
23 ENTRAVISION COMMUNICATIONS C 172,100 1,416 0.50%
24 VASCULAR SOLUTIONS 170,727 5,928 2.08%
25 INPHI CORPORATION 165,903 3,793 1.33%
26 FINANCIAL INSTNS INC 162,651 4,041 1.42%
27 KIRKLANDS INC COM 160,973 4,486 1.58%
28 RENASANT CORP 152,888 4,985 1.75%
29 KNIGHT TRANSN INC 150,995 4,038 1.42%
30 SUNPOWER CORP 144,900 4,117 1.45%
31 SUNPOWER CORP 144,900 638 0.22% Put
32 HANMI FINL CORP COM NEW 142,604 3,542 1.25%
33 NATUS MEDICAL INC. 136,212 5,796 2.04%
34 WSFS FINL CORPORATION 135,997 3,720 1.31%
35 BRYN MAWR BK CORP 130,704 3,942 1.39%
36 COLUMBIA BKG SYS INC COM 126,932 4,130 1.45%
37 NATURAL GAS SERVICES GROUP 126,518 2,887 1.02%
38 VIRTUSA CORPORATION 123,046 6,326 2.22%
39 MARTEN TRANS LTD COM 122,874 2,666 0.94%
40 PANHANDLE OIL AND GAS INC 122,280 2,530 0.89%
41 HEALTHSTREAM INC COM 121,523 3,697 1.30%
42 GREAT LAKES DREDGE & DOCK CO 118,495 706 0.25%
43 FLUSHING FINL CORP 111,258 2,338 0.82%
44 On Assignment Inc 111,137 4,365 1.53%
45 SP PLUS CORP COM 108,797 2,841 1.00%
46 CAMBREX CORP 108,613 4,773 1.68%
47 GP Strategies Corp 108,402 3,603 1.27%
48 CRA INTL INC COM 107,022 2,983 1.05%
49 U S PHYSICAL THERAPY COM 102,625 5,620 1.98%
50 AMAG PHARMACEUTICALS INC 101,191 6,987 2.46%
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