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

Institutional Holders (2015Q3)
Portfolio Summary: 152 Institutional holders with a total value of $483,143,589.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Highland Management Partners VII, LLC 2,774,500 55,518,000 11.49%
2 VANGUARD GROUP INC 2,310,096 46,225,000 9.57%
3 Granahan Investment Management, LLC 1,361,612 27,246,000 5.64%
4 NORTH RUN CAPITAL, LP 1,205,186 24,116,000 4.99%
5 MILLENNIUM MANAGEMENT LLC 873,505 17,479,000 3.62%
6 MORGAN STANLEY 747,874 14,965,000 3.10%
7 BlackRock Institutional Trust Company, N.A. 739,128 14,790,000 3.06%
8 BlackRock Fund Advisors 719,054 14,388,000 2.98%
9 RENAISSANCE TECHNOLOGIES LLC 546,700 10,939,000 2.26%
10 EMERALD MUTUAL FUND ADVISERS TRUST 503,415 10,073,000 2.08%
11 EMERALD ADVISERS, LLC 501,626 10,038,000 2.08%
12 KINGDON CAPITAL MANAGEMENT, L.L.C. 500,000 10,005,000 2.07%
13 STATE STREET CORP 453,267 9,068,000 1.88%
14 Elk Creek Partners, LLC 435,805 8,720,000 1.80%
15 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 389,633 7,797,000 1.61%
16 D. E. Shaw & Co., Inc. 379,345 7,591,000 1.57%
17 Numeric Investors LLC 368,549 7,375,000 1.53%
18 ACADIAN ASSET MANAGEMENT LLC 363,731 7,279,000 1.51%
19 GILDER GAGNON HOWE & CO LLC 328,248 6,568,000 1.36%
20 Neuberger Berman Group LLC 325,568 6,515,000 1.35%
21 NORTHERN TRUST CORP 301,625 6,035,000 1.25%
22 CITADEL ADVISORS LLC 287,346 5,750,000 1.19%
23 TIAA CREF INVESTMENT MANAGEMENT LLC 281,913 5,641,000 1.17%
24 Archon Capital Management LLC 279,000 5,583,000 1.16%
25 AWM Investment Company, Inc. 264,877 5,300,000 1.10%
26 KOPP INVESTMENT ADVISORS LLC 256,975 5,142,000 1.06%
27 BOGLE INVESTMENT MANAGEMENT L P /DE/ 252,555 5,053,000 1.05%
28 FULLER & THALER ASSET MANAGEMENT, INC. 229,675 4,596,000 0.95%
29 Pier Capital, LLC 229,101 4,584,000 0.95%
30 CASTLEARK MANAGEMENT LLC 222,075 4,444,000 0.92%
31 Spark Investment Management LLC 217,500 4,352,000 0.90%
32 STATE OF WISCONSIN INVESTMENT BOARD 210,000 4,202,000 0.87%
33 Bank of New York Mellon Corp 191,721 3,835,000 0.79%
34 QS Investors, LLC 191,426 3,830,000 0.79%
35 AQR CAPITAL MANAGEMENT LLC 183,081 3,664,000 0.76%
36 Hood River Capital Management LLC 167,713 3,356,000 0.69%
37 BANK OF AMERICA CORP /DE/ 160,343 3,208,000 0.66%
38 HIGHBRIDGE CAPITAL MANAGEMENT LLC 155,944 3,120,000 0.65%
39 GEODE CAPITAL MANAGEMENT, LLC 155,071 3,102,000 0.64%
40 Nuveen Asset Management, LLC 150,051 3,002,000 0.62%
41 Weiss Multi-Strategy Advisers LLC 145,000 2,901,000 0.60%
42 BLACKROCK ADVISORS LLC 144,780 2,897,000 0.60%
43 UNITED SERVICES AUTOMOBILE ASSOCIATION 136,266 2,727,000 0.56%
44 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 127,865 2,559,000 0.53%
45 AMERIPRISE FINANCIAL INC 113,934 2,280,000 0.47%
46 CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. 107,800 2,157,000 0.45%
47 Informed Momentum Co LLC 106,434 2,130,000 0.44%
48 MARSHALL WACE, LLP 105,975 2,121,000 0.44%
49 PDT Partners, LLC 101,421 2,029,000 0.42%
50 BlackRock Investment Management, LLC 95,958 1,920,000 0.40%
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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.