IO

ION Geophysical Corporation
IO

Overview Fund Activity
Delisted

IO was delisted on the 18th of May, 2022.

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73 hedge funds and large institutions have $199M invested in ION Geophysical Corporation in 2018 Q1 according to their latest regulatory filings, with 29 funds opening new positions, 21 increasing their positions, 18 reducing their positions, and 4 closing their positions.

Holders
73
Holders Change
+25
Holders Change %
+52.08%
% of All Funds
1.68%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
29
Increased
21
Reduced
18
Closed
4
Calls
$6.14M
Puts
$1.65M
Net Calls
+$4.5M
Net Calls Change
+$1.68M

Top Buyers

1
Renaissance Technologies
1
Renaissance Technologies
New York
$30.3M
2
HRCM
2
Hood River Capital Management
Florida
$10.2M
3
GCM
3
Gates Capital Management
New York
$23.4M
4
MWNA
4
Marshall Wace North America
New York
$8.44M
5
Millennium Management
5
Millennium Management
New York
$8.38M

Top Sellers

1
Invesco
1
Invesco
Georgia
$21.9M
2
JPMorgan Chase & Co
2
JPMorgan Chase & Co
New York
$1.63M
3
California Public Employees Retirement System
3
California Public Employees Retirement System
California
$376K
4
OAM
4
Oxford Asset Management
United Kingdom
$3.49M
5
EI
5
EAM Investors
California
$586K
Name Market Value Shares Shares
Change 		Shares
Change %
Renaissance Technologies
1
Renaissance Technologies
New York
$30.3M 1,119,656 +534,500 +91%
GCM
2
Gates Capital Management
New York
$23.4M 861,844 +349,688 +68%
Invesco
3
Invesco
Georgia
$21.9M 808,096 -116,196 -13%
Vanguard Group
4
Vanguard Group
Pennsylvania
$11.4M 421,496 +28,949 +7%
HRCM
5
Hood River Capital Management
Florida
$10.2M 374,858 +374,858 New
Dimensional Fund Advisors
6
Dimensional Fund Advisors
Texas
$10.1M 372,163 +128,856 +53%
MWNA
7
Marshall Wace North America
New York
$8.44M 311,499 +311,499 New
Millennium Management
8
Millennium Management
New York
$8.38M 309,236 +268,342 +656%
BCM
9
Bridgeway Capital Management
Texas
$5.9M 217,805 -5,600 -3%
Neuberger Berman Group
10
Neuberger Berman Group
New York
$4.84M 178,788 +29,343 +20%
BlackRock
11
BlackRock
New York
$4.75M 175,420 -952 -0.5%
Arrowstreet Capital
12
Arrowstreet Capital
Massachusetts
$4.56M 168,411 +168,411 New
AIM
13
Alambic Investment Management
California
$4.52M 166,613 +135,113 +429%
Acadian Asset Management
14
Acadian Asset Management
Massachusetts
$4.1M 151,202 +89,591 +145%
Goldman Sachs
15
Goldman Sachs
New York
$3.66M 135,098 +135,098 New
SIM
16
Spark Investment Management
New York
$3.54M 130,800 +70,700 +118%
OAM
17
Oxford Asset Management
United Kingdom
$3.49M 128,766 -24,278 -16%
Deutsche Bank
18
Deutsche Bank
Germany
$3.25M 119,856 +62,349 +108%
Susquehanna International Group
19
Susquehanna International Group
Pennsylvania
$2.68M 98,826 +61,691 +166%
Fuller & Thaler Asset Management
20
Fuller & Thaler Asset Management
California
$2.12M 78,235 +78,235 New
RA
21
Royce & Associates
New York
$1.95M 71,880 – –
Geode Capital Management
22
Geode Capital Management
Massachusetts
$1.79M 65,970 +22,983 +53%
JPMorgan Chase & Co
23
JPMorgan Chase & Co
New York
$1.63M 60,164 -75,129 -56%
OSAM
24
O'Shaughnessy Asset Management
Connecticut
$1.55M 57,060 +35,908 +170%
BCM
25
BlueCrest Capital Management
Jersey
$1.37M 50,554 +50,554 New
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