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Institutional Investment Manager
MARXE AUSTIN W & GREENHOUSE DAVID M
MARXE AUSTIN W & GREENHOUSE DAVID M (CIK: 0001044321), located at C/O Special Situations Funds, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q3)
Portfolio Summary: 148 holdings with a total value of $733,217,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 Sensus Healthcare, Inc @6.75 6 134,268,164 56,907,000 7.76%
2 ORBITAL ATK INC 2,348,955 25,557,000 3.49%
3 KOPIN CORP 6,126,598 20,830,000 2.84%
4 Vocera Communications Inc 2,388,325 19,274,000 2.63%
5 ULTRA CLEAN HLDGS INC 2,070,103 18,527,000 2.53%
6 LIVEPERSON INC 1,427,200 17,968,000 2.45%
7 PACIRA BIOSCIENCES INC 180,000 17,446,000 2.38%
8 CEVA Inc 1,275,449 17,142,000 2.34%
9 Broadwind Energy, Inc. 2,112,191 15,820,000 2.16%
10 OMNIVISION TECHS INC 514,044 13,602,000 1.86%
11 Pure Technologies Ltd. 1,869,300 13,489,000 1.84%
12 LRAD CORP 4,667,710 12,649,000 1.73%
13 ADEPT TECHNOLOGY INC 1,467,850 12,345,000 1.68%
14 Brightcove, Inc. 2,200,967 12,281,000 1.67%
15 EXTREME NETWORKS INC COM 2,422,864 11,606,000 1.58%
16 GeneNews, Ltd. (Canada) (CF) 9,303,242 10,561,000 1.44%
17 SILICON MOTION TECHNOLOGY CO SPONSORED ADR 385,295 10,380,000 1.42%
18 POWERSECURE INTL INC 1,022,531 9,796,000 1.34%
19 MICROFINANCIAL INC 1,208,665 9,742,000 1.33%
20 ENTROPIC COMMUNICA 3,597,070 9,568,000 1.30%
21 Carbon Natural Gas Company 10,888,889 9,256,000 1.26%
22 MAG SILVER CORP COM 295,222 9,237,000 1.26%
23 CPI AEROSTRUCTURES INC COM NEW 931,040 9,171,000 1.25%
24 LEMAITRE VASCULAR INC COM 1,311,617 9,024,000 1.23%
25 Amber Road Inc 512,811 8,892,000 1.21%
26 IDEAL PWR INC 1,146,935 8,625,000 1.18%
27 ERICKSON INC 638,976 8,300,000 1.13%
28 CONSTANT CONTACT INC 299,252 8,122,000 1.11%
29 REPLIGEN CORP COM 400,000 7,964,000 1.09%
30 ARGOS THERAPEUTICS INC 750,000 7,545,000 1.03%
31 INCONTACT INC 863,552 7,509,000 1.02%
32 NEOPHOTONICS CORP 2,208,656 7,399,000 1.01%
33 PFENEX INC COM 1,000,000 7,360,000 1.00%
34 KMG CHEMICALS INC COM 430,698 7,012,000 0.96%
35 ALCOBRA LTD 443,496 6,848,000 0.93%
36 MAXLINEAR INC COM 967,397 6,656,000 0.91%
37 Fuelcell Energy Inc 3,101,605 6,482,000 0.88%
38 ORAMED 790,000 6,367,000 0.87%
39 AEROVIRONMENT INC COM 210,000 6,315,000 0.86%
40 VITAE PHARMACEUTICALS INC 825,000 6,295,000 0.86%
41 WAFERGEN BIO-SYSTEMS INC 1,400,000 6,090,000 0.83%
42 ARATANA THERAPEUTICS INC COM 600,000 6,024,000 0.82%
43 SMART TECHNOLOGIES INC 3,559,764 5,838,000 0.80%
44 SPARK NETWORKS INC 1,233,681 5,724,000 0.78%
45 ENERGOUS CORP 481,096 5,484,000 0.75%
46 VITESSE SEMICONDUCTOR CORP 1,502,400 5,409,000 0.74%
47 Turtle Beach Corporation 695,050 5,317,000 0.73%
48 Trillium Therapeutics Corp. Ca 23,809,524 5,312,000 0.72%
49 MANITEX INTL INC 459,230 5,185,000 0.71%
50 ARDMORE SHIPPING CORP 474,300 5,170,000 0.71%
Page 1 of 3

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001044321-14-000112, filed 2014.11.14).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.