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ION GEOPHYSICAL CORP COM NEW
ION GEOPHYSICAL CORP COM NEW. Institutional holdings reported to the SEC.

Institutional Holders (2016Q4)
Portfolio Summary: 67 Institutional holders with a total value of $27,282,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Invesco Ltd. 1,285,623 7,714,000 28.28%
2 VANGUARD GROUP INC 435,060 2,610,000 9.57%
3 Gates Capital Management, Inc. 341,379 2,048,000 7.51%
4 DIMENSIONAL FUND ADVISORS LP 267,254 1,604,000 5.88%
5 RENAISSANCE TECHNOLOGIES LLC 259,106 1,555,000 5.70%
6 Neuberger Berman Group LLC 179,050 1,074,000 3.94%
7 BlackRock Institutional Trust Company, N.A. 158,636 952,000 3.49%
8 Spark Investment Management LLC 111,000 666,000 2.44%
9 GOLDMAN SACHS GROUP INC 105,632 634,000 2.32%
10 BRIDGEWAY CAPITAL MANAGEMENT, LLC 97,816 587,000 2.15%
11 WELLS FARGO & COMPANY/MN 95,471 573,000 2.10%
12 JPMORGAN CHASE & CO 95,302 572,000 2.10%
13 OXFORD ASSET MANAGEMENT LLP 88,911 533,000 1.95%
14 NORGES BANK 84,745 508,000 1.86%
15 Connor, Clark & Lunn Investment Management Ltd. 82,662 496,000 1.82%
16 FULLER & THALER ASSET MANAGEMENT, INC. 82,144 493,000 1.81%
17 ROYCE & ASSOCIATES LP 71,880 431,000 1.58%
18 JACOBS LEVY EQUITY MANAGEMENT, INC 63,330 380,000 1.39%
19 IMPAX ASSET MANAGEMENT LLC 50,000 300,000 1.10%
20 GEODE CAPITAL MANAGEMENT, LLC 42,046 252,000 0.92%
21 BROOKFIELD Corp /ON/ 37,750 226,000 0.83%
22 PARAMETRIC PORTFOLIO ASSOCIATES LLC 34,578 207,000 0.76%
23 MILLENNIUM MANAGEMENT LLC 32,947 198,000 0.73%
24 LSV ASSET MANAGEMENT 32,400 194,000 0.71%
25 State of New Jersey Common Pension Fund D 30,666 184,000 0.67%
26 DUPONT CAPITAL MANAGEMENT CORP 30,400 182,000 0.67%
27 Bank of New York Mellon Corp 27,883 167,000 0.61%
28 NORTHERN TRUST CORP 27,027 162,000 0.59%
29 BlackRock Fund Advisors 26,672 160,000 0.59%
30 Virtu KCG Holdings LLC 26,429 159,000 0.58%
31 ALGERT GLOBAL LLC 22,579 135,000 0.49%
32 Sterling Capital Management LLC 21,730 130,000 0.48%
33 MORGAN STANLEY 21,679 130,000 0.48%
34 DEUTSCHE BANK AG\ 19,406 116,000 0.43%
35 TFS CAPITAL LLC 19,226 115,000 0.42%
36 WOLVERINE ASSET MANAGEMENT LLC 14,700 88,000 0.32% Put
37 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 14,466 87,000 0.32%
38 A.R.T. Advisors, LLC 13,860 83,000 0.30%
39 HighTower Advisors, LLC 13,333 80,000 0.29%
40 CREDIT SUISSE AG/ 10,760 64,000 0.23%
41 TWO SIGMA INVESTMENTS, LP 10,603 64,000 0.23%
42 ACROSPIRE INVESTMENT MANAGEMENT LLC 10,240 61,000 0.22%
43 FIRST TRUST ADVISORS LP 10,000 60,000 0.22%
44 Walleye Trading LLC 7,900 47,000 0.17%
45 THOMPSON DAVIS & CO., INC. 5,516 33,000 0.12%
46 RUSSELL INVESTMENTS GROUP, LTD. 4,539 27,000 0.10%
47 Brandywine Global Investment Management, LLC 4,470 27,000 0.10%
48 Nationwide Fund Advisors 3,369 20,000 0.07%
49 UBS Group AG 2,333 14,000 0.05%
50 ACADIAN ASSET MANAGEMENT LLC 2,404 14,000 0.05%
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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.