Who owns ION Geophysical Corporation?

Top Holders and Investors of IO Stock

Find out what company owns ION Geophysical Corporation, who bought IO this quarter, and who sold shares of IO stock?

Fund or Company Name Number of Shares Valued At As Of
Vanguard 6.29M $3.15M Dec 2015
VTL Associates 342867 $133718 Sep 2015
ALLIANCEBERNSTEIN 189250 $94625 Dec 2015
Connor, Clark & Lunn Investment Management 65450 $32725 Dec 2015
Driehaus Capital Management 55245 $28174 Dec 2015
Citi 43625 $21812 Dec 2015
Atherton Lane Advisers 18900 $10017 Dec 2015
SUSQUEHANNA INTERNATIONAL 14248 $6981 Dec 2015
Sanders Morris Harris 5000 $3000 Dec 2015
TCI Wealth Advisors 333 $3000 Mar 2016

Who sold ION Geophysical Corporation?

Fund Name Date Sold Shares Held Valued At
Inves Dec. 31, 2015 28.43M $14.21M
DIMENSIONAL FUND ADVISORS Dec. 31, 2015 4.19M $2.10M
Wells Fargo & Company Dec. 31, 2015 4.09M $2.05M
BlackRock Fund Advisors Dec. 31, 2015 3.70M $1.85M
BlackRock Institutional Trust Company, N.A. Dec. 31, 2015 3.42M $1.71M
Neuberger Berman Dec. 31, 2015 2.96M $1.48M
Renaissance Technologies Dec. 31, 2015 2.61M $1.31M
Norges Bank Investment Management Dec. 31, 2015 1.98M $991839
GOLDMAN SACHS Dec. 31, 2015 1.87M $935883
NORTHERN TRUST Dec. 31, 2015 1.51M $768229
Royce & Associates Dec. 31, 2015 1.08M $539100
Jacobs Levy Equity Management Dec. 31, 2015 861163 $430581
TIAA-CREF Investment Management Dec. 31, 2015 856322 $428161
Millennium Management Dec. 31, 2015 837986 $418993
Counsel Portfolio Services Dec. 31, 2015 791037 $5.97M
Geode Capital Management Dec. 31, 2015 764960 $382480
CalPERS Dec. 31, 2015 601900 $300950
BlackRock Investment Management Dec. 31, 2015 507388 $253694
Parametric Portfolio Associates Dec. 31, 2015 459342 $229671
Bridgeway Capital Management Dec. 31, 2015 360010 $180005
State of New Jersey Common Pension Fund D Dec. 31, 2015 310000 $155000
Two Sigma Investments Dec. 31, 2015 288955 $144477
California State Teachers Retirement System Dec. 31, 2015 261518 $130759
OTR - Nominee Name for The State Teachers Retirement Board of Ohio Dec. 31, 2015 220800 $110400
Charles Schwab Investment Management Dec. 31, 2015 220300 $110150
Teachers Advisors Dec. 31, 2015 207426 $103713
RHUMBLINE ADVISERS Dec. 31, 2015 207244 $103622
HighTower Advisors Dec. 31, 2015 200313 $100156
Nationwide Fund Advisors Dec. 31, 2015 194245 $97122
CITADEL ADVISORS Dec. 31, 2015 176104 $88052
Credit Suisse AG Dec. 31, 2015 165313 $82656
Frank Russell Company Dec. 31, 2015 149409 $74704
Public Sector Pension Investment Board Sept. 30, 2015 141367 $55133
New York State Common Retirement Fund Dec. 31, 2015 129200 $64600
Two Sigma Advisers Dec. 31, 2015 124668 $63580
Thomas Stevens, CFA" Dec. 31, 2015 123100 $61550
KCG Holdings Dec. 31, 2015 118050 $59025
Florida State Board of Administration Dec. 31, 2015 112084 $56042
UBS Group AG Dec. 31, 2015 107859 $55008
ING INVESTMENT MANAGEMENT Dec. 31, 2015 84580 $43135
AMERICAN INTERNATIONAL Dec. 31, 2015 82640 $41997
AQR Capital Management Dec. 31, 2015 69064 $35222
BlackRock Advisors Dec. 31, 2015 58377 $29188
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY Sept. 30, 2015 55300 $22120
Deutsche Bank Aktiengesellschaft Dec. 31, 2015 34767 $0
Guggenheim Capital, LLC Managers Dec. 31, 2015 27542 $14046
Bayesian Capital Management Dec. 31, 2015 23100 $12012
MORGAN STANLEY Dec. 31, 2015 22199 $14207
ProShare Advisors Dec. 31, 2015 20540 $10064
Principal Financial Dec. 31, 2015 20364 $9978
FNY MANAGED ACCOUNTS Dec. 31, 2015 19338 $9728
Squarepoint Ops Dec. 31, 2015 19200 $9984
Commonwealth Equity Services Dec. 31, 2015 19200 $9984
Legal & General Dec. 31, 2015 18461 $9045
Cubist Systematic Strategies Dec. 31, 2015 18120 $9060
AMALGAMATED BANK Dec. 31, 2015 13644 $6958
HIGHBRIDGE CAPITAL MANAGEMENT Dec. 31, 2015 13596 $6933
Summit Investment Advisors Dec. 31, 2015 11881 $6059
CCM Partners Dec. 31, 2015 11605 $6034
Nuveen Asset Management Dec. 31, 2015 10021 $5010
Tower Research Capital Dec. 31, 2015 9091 $5000
SEI INVESTMENTS Dec. 31, 2015 7054 $4020
Ladenburg Thalmann Financial Services Dec. 31, 2015 3928 $3928
Bank of America Corporation Dec. 31, 2015 3804 $0
Brown Brothers Harriman & Co. Dec. 31, 2015 3500 $1995
BlackRock Dec. 31, 2015 3239 $2008
Royal Bank of Canada Dec. 31, 2015 2073 $995
PNC FINANCIAL SERVICES Dec. 31, 2015 881 $0
Manufacturers Life Insurance Company Dec. 31, 2015 717 $0
Fifth Third Ban Sept. 30, 2015 352 $0
US BANCORP \DE\ Dec. 31, 2015 90 $0