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

Institutional Holders (2016Q1)
Portfolio Summary: 186 Institutional holders with a total value of $854,797,458.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 VANGUARD GROUP INC 2,688,829 83,408,000 9.76%
2 Highland Management Partners VII, LLC 1,374,500 42,637,000 4.99%
3 Granahan Investment Management, LLC 1,268,255 39,341,000 4.60%
4 GILDER GAGNON HOWE & CO LLC 1,145,344 35,529,000 4.16%
5 ACADIAN ASSET MANAGEMENT LLC 1,042,373 32,337,000 3.78%
6 RENAISSANCE TECHNOLOGIES LLC 996,600 30,915,000 3.62%
7 BlackRock Institutional Trust Company, N.A. 827,834 25,679,000 3.00%
8 BlackRock Fund Advisors 711,328 22,065,000 2.58%
9 KINGDON CAPITAL MANAGEMENT, L.L.C. 669,061 20,754,000 2.43%
10 EMERALD MUTUAL FUND ADVISERS TRUST 614,871 19,073,000 2.23%
11 EMERALD ADVISERS, LLC 605,921 18,796,000 2.20%
12 MILLENNIUM MANAGEMENT LLC 604,997 18,767,000 2.20%
13 Allianz Asset Management GmbH 541,083 16,785,000 1.96%
14 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 526,032 16,318,000 1.91%
15 BANK OF MONTREAL /CAN/ 482,204 14,958,000 1.75%
16 STATE STREET CORP 445,616 13,827,000 1.62%
17 Elk Creek Partners, LLC 429,045 13,309,000 1.56%
18 Bank of New York Mellon Corp 396,204 12,290,000 1.44%
19 BANK OF AMERICA CORP /DE/ 387,260 12,012,000 1.41%
20 D. E. Shaw & Co., Inc. 360,746 11,190,000 1.31%
21 TEACHERS ADVISORS, LLC 356,138 11,047,000 1.29%
22 Lyon Street Capital, LLC 345,554 10,719,000 1.25%
23 NORTHERN TRUST CORP 323,353 10,030,000 1.17%
24 AMERIPRISE FINANCIAL INC 315,001 9,772,000 1.14%
25 Shellback Capital, LP 299,072 9,277,000 1.09%
26 WELLS FARGO & COMPANY/MN 289,441 8,979,000 1.05%
27 OXFORD ASSET MANAGEMENT LLP 273,610 8,487,000 0.99%
28 OBERWEIS ASSET MANAGEMENT INC/ 272,600 8,456,000 0.99%
29 QS Investors, LLC 269,370 8,356,000 0.98%
30 KOPP INVESTMENT ADVISORS LLC 265,930 8,249,000 0.97%
31 AWM Investment Company, Inc. 264,877 8,216,000 0.96%
32 AMERICAN CENTURY COMPANIES INC 238,420 7,396,000 0.87%
33 PANAGORA ASSET MANAGEMENT INC 230,889 7,162,000 0.84%
34 Harvest Capital Strategies LLC 230,810 7,160,000 0.84%
35 MORGAN STANLEY 223,757 6,941,000 0.81%
36 LORD, ABBETT & CO. LLC 220,046 6,825,000 0.80%
37 RUSSELL FRANK CO/ 209,913 6,511,000 0.76%
38 TIAA CREF INVESTMENT MANAGEMENT LLC 204,070 6,330,000 0.74%
39 STATE OF WISCONSIN INVESTMENT BOARD 200,000 6,204,000 0.73%
40 Weiss Multi-Strategy Advisers LLC 200,000 6,204,000 0.73%
41 DEUTSCHE BANK AG\ 196,377 6,090,000 0.71%
42 WESTFIELD CAPITAL MANAGEMENT CO LP 192,441 5,970,000 0.70%
43 GEODE CAPITAL MANAGEMENT, LLC 187,204 5,806,000 0.68%
44 Century Capital Management, LLC 185,104 5,742,000 0.67%
45 Neuberger Berman Group LLC 183,298 5,686,000 0.67%
46 FULLER & THALER ASSET MANAGEMENT, INC. 182,550 5,663,000 0.66%
47 AQR CAPITAL MANAGEMENT LLC 180,987 5,614,000 0.66%
48 G2 Investment Partners Management LLC 179,397 5,565,000 0.65%
49 Redwood Investments, LLC 179,124 5,556,000 0.65% SH
50 WADDELL & REED FINANCIAL INC 178,200 5,528,000 0.65%
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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.