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

Institutional Holders (2015Q2)
Portfolio Summary: 154 Institutional holders with a total value of $778,696,724.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Highland Management Partners VII, LLC 2,774,500 91,530,000 11.75%
2 VANGUARD GROUP INC 1,777,661 58,646,000 7.53%
3 Granahan Investment Management, LLC 1,493,412 49,268,000 6.33%
4 NORTH RUN CAPITAL, LP 1,450,000 47,836,000 6.14%
5 MILLENNIUM MANAGEMENT LLC 862,746 28,462,000 3.66%
6 MORGAN STANLEY 771,762 25,460,000 3.27%
7 BlackRock Fund Advisors 718,439 23,701,000 3.04%
8 Neuberger Berman Group LLC 685,599 22,618,000 2.90%
9 Alyeska Investment Group, L.P. 631,368 20,829,000 2.67%
10 D. E. Shaw & Co., Inc. 597,335 19,706,000 2.53%
11 BlackRock Institutional Trust Company, N.A. 580,703 19,157,000 2.46%
12 KINGDON CAPITAL MANAGEMENT, L.L.C. 455,000 15,010,000 1.93%
13 RENAISSANCE TECHNOLOGIES LLC 407,200 13,434,000 1.73%
14 EMERALD ADVISERS, LLC 402,706 13,285,000 1.71%
15 STATE STREET CORP 382,471 12,617,000 1.62%
16 FULLER & THALER ASSET MANAGEMENT, INC. 331,700 10,943,000 1.41%
17 GILDER GAGNON HOWE & CO LLC 324,308 10,699,000 1.37%
18 EMERALD MUTUAL FUND ADVISERS TRUST 322,088 10,626,000 1.36%
19 DRIEHAUS CAPITAL MANAGEMENT LLC 316,028 10,426,000 1.34%
20 BOGLE INVESTMENT MANAGEMENT L P /DE/ 301,455 9,945,000 1.28%
21 KOPP INVESTMENT ADVISORS LLC 297,530 9,815,000 1.26%
22 LORD, ABBETT & CO. LLC 297,504 9,815,000 1.26%
23 CASTLEARK MANAGEMENT LLC 291,675 9,622,000 1.24%
24 INSIGHT CAPITAL RESEARCH & MANAGEMENT INC 288,514 9,518,000 1.22%
25 AWM Investment Company, Inc. 284,585 9,388,000 1.21%
26 NORTHERN TRUST CORP 258,229 8,518,000 1.09%
27 TWO SIGMA INVESTMENTS, LP 228,206 7,529,000 0.97%
28 Bank of New York Mellon Corp 211,451 6,976,000 0.90%
29 G2 Investment Partners Management LLC 211,339 6,972,000 0.90%
30 Pier Capital, LLC 209,953 6,926,000 0.89%
31 BANK OF AMERICA CORP /DE/ 207,763 6,854,000 0.88%
32 STATE OF WISCONSIN INVESTMENT BOARD 200,000 6,598,000 0.85%
33 Hood River Capital Management LLC 190,710 6,292,000 0.81%
34 Informed Momentum Co LLC 173,836 5,735,000 0.74%
35 TIAA CREF INVESTMENT MANAGEMENT LLC 169,485 5,591,000 0.72%
36 Spark Investment Management LLC 166,200 5,482,000 0.70%
37 BLACKROCK ADVISORS LLC 145,585 4,803,000 0.62%
38 UNITED SERVICES AUTOMOBILE ASSOCIATION 142,766 4,710,000 0.60%
39 GEODE CAPITAL MANAGEMENT, LLC 141,480 4,667,000 0.60%
40 CITADEL ADVISORS LLC 140,022 4,619,000 0.59%
41 BALYASNY ASSET MANAGEMENT L.P. 134,110 4,424,000 0.57%
42 Elk Creek Partners, LLC 130,290 4,298,000 0.55%
43 Nuveen Asset Management, LLC 109,271 3,605,000 0.46%
44 HARBER ASSET MANAGEMENT LLC 99,175 3,272,000 0.42%
45 BlackRock Investment Management, LLC 97,397 3,213,000 0.41%
46 CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. 92,900 3,065,000 0.39%
47 AQR CAPITAL MANAGEMENT LLC 89,830 2,963,000 0.38%
48 Nine Chapters Capital Management LLC 85,200 2,811,000 0.36%
49 A.R.T. Advisors, LLC 83,372 2,750,000 0.35%
50 TWO SIGMA ADVISERS, LP 82,100 2,708,000 0.35%
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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.