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GIGAMON INC
GIGAMON INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q4)
Portfolio Summary: 95 Institutional holders with a total value of $379,135,765.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Highland Management Partners VII, LLC 5,774,500 102,382,000 27.00%
2 NORTH RUN CAPITAL, LP 2,375,000 42,109,000 11.11%
3 Granahan Investment Management, LLC 1,464,300 25,962,000 6.85%
4 VANGUARD GROUP INC 1,199,958 21,275,000 5.61%
5 Point72 Asset Management, L.P. 1,000,000 17,730,000 4.68%
6 KINGDON CAPITAL MANAGEMENT, L.L.C. 814,786 14,446,000 3.81%
7 CADIAN CAPITAL MANAGEMENT, LP 734,000 13,014,000 3.43%
8 BlackRock Fund Advisors 673,571 11,942,000 3.15%
9 Neuberger Berman Group LLC 543,840 9,642,000 2.54%
10 QUENTEC ASSET MANAGEMENT LLC 519,627 9,213,000 2.43%
11 AWM Investment Company, Inc. 468,966 8,315,000 2.19%
12 MILLENNIUM MANAGEMENT LLC 366,185 6,492,000 1.71%
13 GILDER GAGNON HOWE & CO LLC 349,216 6,192,000 1.63%
14 BlackRock Institutional Trust Company, N.A. 309,368 5,485,000 1.45%
15 FULLER & THALER ASSET MANAGEMENT, INC. 297,000 5,266,000 1.39%
16 STATE STREET CORP 292,560 5,189,000 1.37%
17 GOLDMAN SACHS GROUP INC 281,939 4,998,000 1.32%
18 NORTHERN TRUST CORP 253,954 4,502,000 1.19%
19 D. E. Shaw & Co., Inc. 251,643 4,462,000 1.18%
20 Nuveen Asset Management, LLC 244,936 4,343,000 1.15%
21 Bank of New York Mellon Corp 216,732 3,841,000 1.01%
22 STATE OF WISCONSIN INVESTMENT BOARD 213,000 3,776,000 1.00%
23 DRIEHAUS CAPITAL MANAGEMENT LLC 177,600 3,149,000 0.83%
24 PEAK6 Group LLC 150,100 2,661,000 0.70% Put
25 UNITED SERVICES AUTOMOBILE ASSOCIATION 135,054 2,395,000 0.63%
26 MORGAN STANLEY 130,738 2,318,000 0.61%
27 Granite Investment Partners, LLC 128,225 2,273,000 0.60%
28 RENAISSANCE TECHNOLOGIES LLC 122,000 2,163,000 0.57%
29 HARBER ASSET MANAGEMENT LLC 163,037 2,125,000 0.56%
30 GEODE CAPITAL MANAGEMENT, LLC 115,274 2,043,000 0.54%
31 Harvey Partners, LLC 112,000 1,986,000 0.52%
32 SUSQUEHANNA INTERNATIONAL GROUP, LLP 91,830 1,628,000 0.43%
33 TIAA CREF INVESTMENT MANAGEMENT LLC 87,740 1,556,000 0.41%
34 CITADEL ADVISORS LLC 80,748 1,431,000 0.38%
35 KOPP INVESTMENT ADVISORS LLC 74,845 1,327,000 0.35%
36 SUSQUEHANNA INTERNATIONAL GROUP, LLP 74,700 1,324,000 0.35% Put
37 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 71,057 1,260,000 0.33%
38 BlackRock Investment Management, LLC 70,212 1,245,000 0.33%
39 FIRST MANHATTAN CO. LLC. 64,700 1,147,000 0.30%
40 A.R.T. Advisors, LLC 63,221 1,120,000 0.30%
41 PARAMETRIC PORTFOLIO ASSOCIATES LLC 61,004 1,082,000 0.29%
42 CREDIT SUISSE AG/ 59,410 1,053,000 0.28%
43 Employees Retirement System of Texas 56,000 993,000 0.26%
44 Nine Chapters Capital Management LLC 47,700 846,000 0.22%
45 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 44,844 795,000 0.21%
46 DEUTSCHE BANK AG\ 41,764 739,000 0.19%
47 GRUBER & MCBAINE CAPITAL MANAGEMENT LLC 40,000 709,000 0.19%
48 HIGHBRIDGE CAPITAL MANAGEMENT LLC 39,712 704,000 0.19%
49 TEACHERS ADVISORS, LLC 34,357 609,000 0.16%
50 TUDOR INVESTMENT CORP ET AL 29,937 531,000 0.14%
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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.