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

Institutional Holders (2016Q1)
Portfolio Summary: 64 Institutional holders with a total value of $38,577,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Invesco Ltd. 1,861,583 15,042,000 38.99%
2 VANGUARD GROUP INC 423,353 3,421,000 8.87%
3 DIMENSIONAL FUND ADVISORS LP 272,091 2,198,000 5.70%
4 BlackRock Fund Advisors 235,489 1,903,000 4.93%
5 BlackRock Institutional Trust Company, N.A. 228,211 1,844,000 4.78%
6 Neuberger Berman Group LLC 188,596 1,524,000 3.95%
7 RENAISSANCE TECHNOLOGIES LLC 169,782 1,372,000 3.56%
8 STATE STREET CORP 161,646 1,304,000 3.38%
9 NORGES BANK 132,245 1,069,000 2.77%
10 NORTHERN TRUST CORP 99,156 801,000 2.08%
11 FULLER & THALER ASSET MANAGEMENT, INC. 84,544 683,000 1.77%
12 ROYCE & ASSOCIATES LP 71,880 581,000 1.51%
13 PARAMETRIC PORTFOLIO ASSOCIATES LLC 61,624 498,000 1.29%
14 JACOBS LEVY EQUITY MANAGEMENT, INC 54,029 437,000 1.13%
15 Counsel Portfolio Services Inc. 52,735 426,000 1.10%
16 GEODE CAPITAL MANAGEMENT, LLC 51,943 419,000 1.09%
17 WELLS FARGO & COMPANY/MN 51,344 414,000 1.07%
18 Spark Investment Management LLC 49,600 400,000 1.04%
19 Bank of New York Mellon Corp 45,943 371,000 0.96%
20 PANAGORA ASSET MANAGEMENT INC 44,948 363,000 0.94%
21 BRIDGEWAY CAPITAL MANAGEMENT, LLC 44,000 356,000 0.92%
22 OXFORD ASSET MANAGEMENT LLP 38,508 311,000 0.81%
23 Sterling Capital Management LLC 36,571 295,000 0.76%
24 BlackRock Investment Management, LLC 34,629 280,000 0.73%
25 Connor, Clark & Lunn Investment Management Ltd. 31,179 252,000 0.65%
26 Gates Capital Management, Inc. 25,000 202,000 0.52%
27 GOLDMAN SACHS GROUP INC 21,786 176,000 0.46%
28 State of New Jersey Common Pension Fund D 20,667 167,000 0.43%
29 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 20,147 163,000 0.42%
30 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 17,066 138,000 0.36%
31 RHUMBLINE ADVISERS 14,883 120,000 0.31%
32 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 14,686 119,000 0.31%
33 STRS OHIO 14,720 118,000 0.31%
34 HighTower Advisors, LLC 13,353 108,000 0.28%
35 ALLIANCEBERNSTEIN L.P. 12,615 102,000 0.26%
36 CREDIT SUISSE AG/ 10,902 88,000 0.23%
37 SUSQUEHANNA INTERNATIONAL GROUP, LLP 10,000 81,000 0.21% Call
38 NEW YORK STATE COMMON RETIREMENT FUND 8,612 70,000 0.18%
39 CITIGROUP INC 7,872 63,000 0.16%
40 Nationwide Fund Advisors 7,247 59,000 0.15%
41 MORGAN STANLEY 6,027 48,000 0.12%
42 AMERICAN INTERNATIONAL GROUP, INC. 5,508 45,000 0.12%
43 BLACKROCK ADVISORS LLC 3,891 31,000 0.08%
44 RUSSELL FRANK CO/ 2,939 24,000 0.06%
45 UBS Group AG 2,333 19,000 0.05%
46 MANUFACTURERS LIFE INSURANCE COMPANY, THE 1,602 13,000 0.03%
47 DEUTSCHE BANK AG\ 1,384 11,000 0.03%
48 Creative Planning 1,312 11,000 0.03%
49 Legal & General Group Plc 1,229 10,000 0.03%
50 Tower Research Capital LLC (TRC) 773 6,000 0.02%
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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.