ION Geophysical Corp

Q4 2015 vs Q1 2016

Comparing institutional holders between quarters

Compare Detailed Historical Funds Options 13D/13G Peers Targeting Trading Summary Profile

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TCI Wealth Advisors, Inc.

DECREASED

Shares333 from 5,000

Change-4,667 (-93%)

Value$3 ($0)

Filed 2016-04-29

Invesco Ltd.

CLOSED

Shares0 from 28,426,585

Change-28,426,585 (-100%)

Value$0 (-$14.3K)

Filed 2016-05-16

Vanguard Group Inc

CLOSED

Shares0 from 6,291,508

Change-6,291,508 (-100%)

Value$0 (-$3.2K)

Filed 2016-05-13

Dimensional Fund Advisors LP

CLOSED

Shares0 from 4,193,744

Change-4,193,744 (-100%)

Value$0 (-$2.1K)

Filed 2016-05-13

Wells Fargo & Company

CLOSED

Shares0 from 4,093,596

Change-4,093,596 (-100%)

Value$0 (-$2.1K)

Filed 2016-05-16

BlackRock Fund Advisors

CLOSED

Shares0 from 3,699,455

Change-3,699,455 (-100%)

Value$0 (-$1.9K)

Filed 2016-05-10

BlackRock Institutional Trust Company, N.A.

CLOSED

Shares0 from 3,418,216

Change-3,418,216 (-100%)

Value$0 (-$1.7K)

Filed 2016-05-10

Neuberger Berman Group LLC

CLOSED

Shares0 from 2,962,701

Change-2,962,701 (-100%)

Value$0 (-$1.5K)

Filed 2016-05-06

Renaissance Technologies LLC

CLOSED

Shares0 from 2,612,500

Change-2,612,500 (-100%)

Value$0 (-$1.3K)

Filed 2016-05-13

Goldman Sachs Group Inc

CLOSED

Shares0 from 1,871,766

Change-1,871,766 (-100%)

Value$0 (-$942)

Filed 2016-05-13

Northern Trust Corp

CLOSED

Shares0 from 1,506,333

Change-1,506,333 (-100%)

Value$0 (-$758)

Filed 2016-08-19

Royce & Associates LP

CLOSED

Shares0 from 1,078,200

Change-1,078,200 (-100%)

Value$0 (-$542)

Filed 2016-05-11

Jacobs Levy Equity Management, Inc

CLOSED

Shares0 from 861,163

Change-861,163 (-100%)

Value$0 (-$433)

Filed 2016-05-16

Tiaa Cref Investment Management LLC

CLOSED

Shares0 from 856,322

Change-856,322 (-100%)

Value$0 (-$431)

Filed 2016-05-06

Millennium Management LLC

CLOSED

Shares0 from 837,986

Change-837,986 (-100%)

Value$0 (-$422)

Filed 2016-05-16

Counsel Portfolio Services Inc.

CLOSED

Shares0 from 791,037

Change-791,037 (-100%)

Value$0 (-$6.0K)

Filed 2016-05-12

Geode Capital Management, LLC

CLOSED

Shares0 from 764,960

Change-764,960 (-100%)

Value$0 (-$384)

Filed 2016-05-13

Bank of New York Mellon Corp

CLOSED

Shares0 from 674,581

Change-674,581 (-100%)

Value$0 (-$341)

Filed 2016-05-16

California Public Employees Retirement System

CLOSED

Shares0 from 601,900

Change-601,900 (-100%)

Value$0 (-$303)

Filed 2016-05-04

BlackRock Investment Management, LLC

CLOSED

Shares0 from 507,388

Change-507,388 (-100%)

Value$0 (-$255)

Filed 2016-05-10

Parametric Portfolio Associates LLC

CLOSED

Shares0 from 459,342

Change-459,342 (-100%)

Value$0 (-$231)

Filed 2016-05-13

Bridgeway Capital Management, LLC

CLOSED

Shares0 from 360,010

Change-360,010 (-100%)

Value$0 (-$181)

Filed 2016-05-16

State of New Jersey Common Pension Fund D

CLOSED

Shares0 from 310,000

Change-310,000 (-100%)

Value$0 (-$156)

Filed 2016-04-28

Two Sigma Investments, LP

CLOSED

Shares0 from 288,955

Change-288,955 (-100%)

Value$0 (-$145)

Filed 2016-05-16

California State Teachers Retirement System

CLOSED

Shares0 from 261,518

Change-261,518 (-100%)

Value$0 (-$132)

Filed 2016-05-16

Strs Ohio

CLOSED

Shares0 from 220,800

Change-220,800 (-100%)

Value$0 (-$111)

Filed 2016-04-25

Charles Schwab Investment Management Inc

CLOSED

Shares0 from 220,300

Change-220,300 (-100%)

Value$0 (-$111)

Filed 2016-05-05

Teachers Advisors Inc

CLOSED

Shares0 from 207,426

Change-207,426 (-100%)

Value$0 (-$104)

Filed 2016-05-06

Rhumbline Advisers

CLOSED

Shares0 from 207,244

Change-207,244 (-100%)

Value$0 (-$104)

Filed 2016-05-02

HighTower Advisors, LLC

CLOSED

Shares0 from 200,313

Change-200,313 (-100%)

Value$0 (-$101)

Filed 2016-05-16

Nationwide Fund Advisors

CLOSED

Shares0 from 194,245

Change-194,245 (-100%)

Value$0 (-$98)

Filed 2016-05-05

Alliancebernstein L.P.

CLOSED

Shares0 from 189,250

Change-189,250 (-100%)

Value$0 (-$95)

Filed 2016-05-13

Citadel Advisors LLC

CLOSED

Shares0 from 176,104

Change-176,104 (-100%)

Value$0 (-$89)

Filed 2017-01-31

Credit Suisse AG/

CLOSED

Shares0 from 165,313

Change-165,313 (-100%)

Value$0 (-$84)

Filed 2016-05-16

Russell Frank Co/

CLOSED

Shares0 from 149,409

Change-149,409 (-100%)

Value$0 (-$74)

Filed 2016-04-29

New York State Common Retirement Fund

CLOSED

Shares0 from 129,200

Change-129,200 (-100%)

Value$0 (-$65)

Filed 2016-05-06

Two Sigma Advisers, LP

CLOSED

Shares0 from 124,668

Change-124,668 (-100%)

Value$0 (-$63)

Filed 2016-05-16

LOS Angeles Capital Management LLC

CLOSED

Shares0 from 123,100

Change-123,100 (-100%)

Value$0 (-$62)

Filed 2016-05-06

KCG Holdings, Inc.

CLOSED

Shares0 from 118,050

Change-118,050 (-100%)

Value$0 (-$59)

Filed 2016-05-13

State Board of Administration of Florida Retirement System

CLOSED

Shares0 from 112,084

Change-112,084 (-100%)

Value$0 (-$56)

Filed 2016-05-04

UBS Group AG

CLOSED

Shares0 from 107,859

Change-107,859 (-100%)

Value$0 (-$55)

Filed 2016-05-12

Voya Investment Management LLC

CLOSED

Shares0 from 84,580

Change-84,580 (-100%)

Value$0 (-$43)

Filed 2016-05-16

American International Group, Inc.

CLOSED

Shares0 from 82,640

Change-82,640 (-100%)

Value$0 (-$42.0K)

Filed 2016-05-12

AQR Capital Management LLC

CLOSED

Shares0 from 69,064

Change-69,064 (-100%)

Value$0 (-$35)

Filed 2016-08-01

Connor, Clark & Lunn Investment Management Ltd.

CLOSED

Shares0 from 65,450

Change-65,450 (-100%)

Value$0 (-$33)

Filed 2016-05-13

BlackRock Advisors LLC

CLOSED

Shares0 from 58,377

Change-58,377 (-100%)

Value$0 (-$29)

Filed 2016-05-12

Driehaus Capital Management LLC

CLOSED

Shares0 from 55,245

Change-55,245 (-100%)

Value$0 (-$28)

Filed 2016-05-13

Citigroup Inc

CLOSED

Shares0 from 43,625

Change-43,625 (-100%)

Value$0 (-$22)

Filed 2016-05-13

Stokes & Hubbell Capital Management, LLC

CLOSED

Shares0 from 38,607

Change-38,607 (-100%)

Value$0 (-$19)

Filed 2016-04-20

Deutsche Bank Ag\

CLOSED

Shares0 from 34,767

Change-34,767 (-100%)

Value$0 (-$16)

Filed 2016-05-16

Summit Financial Wealth Advisors, LLC

CLOSED

Shares0 from 28,400

Change-28,400 (-100%)

Value$0 (-$14)

Filed 2016-05-13

Guggenheim Capital LLC

CLOSED

Shares0 from 27,542

Change-27,542 (-100%)

Value$0 (-$14)

Filed 2016-05-16

Bayesian Capital Management, LP

CLOSED

Shares0 from 23,100

Change-23,100 (-100%)

Value$0 (-$12)

Filed 2016-05-16

Morgan Stanley

CLOSED

Shares0 from 22,199

Change-22,199 (-100%)

Value$0 (-$11)

Filed 2016-05-12

ProShare Advisors LLC

CLOSED

Shares0 from 20,540

Change-20,540 (-100%)

Value$0 (-$10)

Filed 2016-05-06

BNP Paribas Financial Markets

CLOSED

Shares0 from 20,421

Change-20,421 (-100%)

Value$0 (-$10.2K)

Filed 2016-04-22

Principal Financial Group Inc

CLOSED

Shares0 from 20,364

Change-20,364 (-100%)

Value$0 (-$10)

Filed 2016-05-23

FNY Managed Accounts LLC

CLOSED

Shares0 from 19,338

Change-19,338 (-100%)

Value$0 (-$9.7K)

Filed 2016-05-31

Squarepoint Ops LLC

CLOSED

Shares0 from 19,200

Change-19,200 (-100%)

Value$0 (-$10)

Filed 2016-05-16

Commonwealth Equity Services, Inc

CLOSED

Shares0 from 19,200

Change-19,200 (-100%)

Value$0 (-$10)

Filed 2016-04-27

Legal & General Group Plc

CLOSED

Shares0 from 18,461

Change-18,461 (-100%)

Value$0 (-$9)

Filed 2016-05-16

Cubist Systematic Strategies, LLC

CLOSED

Shares0 from 18,120

Change-18,120 (-100%)

Value$0 (-$9)

Filed 2016-05-16

Susquehanna International Group, LLP

CLOSED

Shares0 from 14,248

Change-14,248 (-100%)

Value$0 (-$7)

Filed 2016-05-13

Amalgamated Bank

CLOSED

Shares0 from 13,644

Change-13,644 (-100%)

Value$0 (-$7)

Filed 2016-05-11

Highbridge Capital Management LLC

CLOSED

Shares0 from 13,596

Change-13,596 (-100%)

Value$0 (-$7)

Filed 2016-05-16

Ameritas Investment Partners, Inc.

CLOSED

Shares0 from 11,881

Change-11,881 (-100%)

Value$0 (-$6)

Filed 2016-05-12

Shelton Capital Management

CLOSED

Shares0 from 11,605

Change-11,605 (-100%)

Value$0 (-$6)

Filed 2016-05-13

Nuveen Asset Management, LLC

CLOSED

Shares0 from 10,021

Change-10,021 (-100%)

Value$0 (-$5)

Filed 2016-05-13

Tower Research Capital LLC (TRC)

CLOSED

Shares0 from 9,091

Change-9,091 (-100%)

Value$0 (-$5)

Filed 2016-05-16

SEI Investments Co

CLOSED

Shares0 from 7,054

Change-7,054 (-100%)

Value$0 (-$4)

Filed 2016-05-10

Creative Planning

CLOSED

Shares0 from 4,700

Change-4,700 (-100%)

Value$0 (-$2)

Filed 2016-04-08

Ladenburg Thalmann Financial Services Inc

CLOSED

Shares0 from 3,928

Change-3,928 (-100%)

Value$0 (-$2)

Filed 2016-05-16

Bank of America Corp

CLOSED

Shares0 from 3,804

Change-3,804 (-100%)

Value$0 (-$2)

Filed 2016-05-13

Brown Brothers Harriman & Co

CLOSED

Shares0 from 3,500

Change-3,500 (-100%)

Value$0 (-$2)

Filed 2016-05-13

BlackRock Inc.

CLOSED

Shares0 from 3,239

Change-3,239 (-100%)

Value$0 (-$2)

Filed 2016-05-10

MetLife Securities, Inc

CLOSED

Shares0 from 3,000

Change-3,000 (-100%)

Value$0 (-$2)

Filed 2016-04-22

Royal Bank of Canada

CLOSED

Shares0 from 2,073

Change-2,073 (-100%)

Value$0 (-$1)

Filed 2016-06-08

PNC Financial Services Group, Inc.

CLOSED

Shares0 from 881

Change-881 (-100%)

Value$0 ($0)

Filed 2016-05-06

Manufacturers Life Insurance Company, the

CLOSED

Shares0 from 717

Change-717 (-100%)

Value$0 ($0)

Filed 2016-05-10

US Bancorp \de\

CLOSED

Shares0 from 90

Change-90 (-100%)

Value$0 ($0)

Filed 2016-05-13

Norges Bank

N/A

Shares— from 1,983,679

Change-1,983,679 (-100%)

Value—

Filed 2017-05-10

Atherton Lane Advisers, LLC

N/A

Shares— from 18,900

Change-18,900 (-100%)

Value—

Edelman Financial Group Inc.

N/A

Shares— from 5,000

Change-5,000 (-100%)

Value—

	Status
TCI Wealth Advisors, Inc.	DECREASED	333	5,000	-4,667	-93%	$3	$3	$0	2016-04-29
Invesco Ltd.	CLOSED	0	28,426,585	-28,426,585	-100%	$14.3K	$0	-$14.3K	2016-05-16
Vanguard Group Inc	CLOSED	0	6,291,508	-6,291,508	-100%	$3.2K	$0	-$3.2K	2016-05-13
Dimensional Fund Advisors LP	CLOSED	0	4,193,744	-4,193,744	-100%	$2.1K	$0	-$2.1K	2016-05-13
Wells Fargo & Company	CLOSED	0	4,093,596	-4,093,596	-100%	$2.1K	$0	-$2.1K	2016-05-16
BlackRock Fund Advisors	CLOSED	0	3,699,455	-3,699,455	-100%	$1.9K	$0	-$1.9K	2016-05-10
BlackRock Institutional Trust Company, N.A.	CLOSED	0	3,418,216	-3,418,216	-100%	$1.7K	$0	-$1.7K	2016-05-10
Neuberger Berman Group LLC	CLOSED	0	2,962,701	-2,962,701	-100%	$1.5K	$0	-$1.5K	2016-05-06
Renaissance Technologies LLC	CLOSED	0	2,612,500	-2,612,500	-100%	$1.3K	$0	-$1.3K	2016-05-13
Goldman Sachs Group Inc	CLOSED	0	1,871,766	-1,871,766	-100%	$942	$0	-$942	2016-05-13
Northern Trust Corp	CLOSED	0	1,506,333	-1,506,333	-100%	$758	$0	-$758	2016-08-19
Royce & Associates LP	CLOSED	0	1,078,200	-1,078,200	-100%	$542	$0	-$542	2016-05-11
Jacobs Levy Equity Management, Inc	CLOSED	0	861,163	-861,163	-100%	$433	$0	-$433	2016-05-16
Tiaa Cref Investment Management LLC	CLOSED	0	856,322	-856,322	-100%	$431	$0	-$431	2016-05-06
Millennium Management LLC	CLOSED	0	837,986	-837,986	-100%	$422	$0	-$422	2016-05-16
Counsel Portfolio Services Inc.	CLOSED	0	791,037	-791,037	-100%	$6.0K	$0	-$6.0K	2016-05-12
Geode Capital Management, LLC	CLOSED	0	764,960	-764,960	-100%	$384	$0	-$384	2016-05-13
Bank of New York Mellon Corp	CLOSED	0	674,581	-674,581	-100%	$341	$0	-$341	2016-05-16
California Public Employees Retirement System	CLOSED	0	601,900	-601,900	-100%	$303	$0	-$303	2016-05-04
BlackRock Investment Management, LLC	CLOSED	0	507,388	-507,388	-100%	$255	$0	-$255	2016-05-10
Parametric Portfolio Associates LLC	CLOSED	0	459,342	-459,342	-100%	$231	$0	-$231	2016-05-13
Bridgeway Capital Management, LLC	CLOSED	0	360,010	-360,010	-100%	$181	$0	-$181	2016-05-16
State of New Jersey Common Pension Fund D	CLOSED	0	310,000	-310,000	-100%	$156	$0	-$156	2016-04-28
Two Sigma Investments, LP	CLOSED	0	288,955	-288,955	-100%	$145	$0	-$145	2016-05-16
California State Teachers Retirement System	CLOSED	0	261,518	-261,518	-100%	$132	$0	-$132	2016-05-16
Strs Ohio	CLOSED	0	220,800	-220,800	-100%	$111	$0	-$111	2016-04-25
Charles Schwab Investment Management Inc	CLOSED	0	220,300	-220,300	-100%	$111	$0	-$111	2016-05-05
Teachers Advisors Inc	CLOSED	0	207,426	-207,426	-100%	$104	$0	-$104	2016-05-06
Rhumbline Advisers	CLOSED	0	207,244	-207,244	-100%	$104	$0	-$104	2016-05-02
HighTower Advisors, LLC	CLOSED	0	200,313	-200,313	-100%	$101	$0	-$101	2016-05-16
Nationwide Fund Advisors	CLOSED	0	194,245	-194,245	-100%	$98	$0	-$98	2016-05-05
Alliancebernstein L.P.	CLOSED	0	189,250	-189,250	-100%	$95	$0	-$95	2016-05-13
Citadel Advisors LLC	CLOSED	0	176,104	-176,104	-100%	$89	$0	-$89	2017-01-31
Credit Suisse AG/	CLOSED	0	165,313	-165,313	-100%	$84	$0	-$84	2016-05-16
Russell Frank Co/	CLOSED	0	149,409	-149,409	-100%	$74	$0	-$74	2016-04-29
New York State Common Retirement Fund	CLOSED	0	129,200	-129,200	-100%	$65	$0	-$65	2016-05-06
Two Sigma Advisers, LP	CLOSED	0	124,668	-124,668	-100%	$63	$0	-$63	2016-05-16
LOS Angeles Capital Management LLC	CLOSED	0	123,100	-123,100	-100%	$62	$0	-$62	2016-05-06
KCG Holdings, Inc.	CLOSED	0	118,050	-118,050	-100%	$59	$0	-$59	2016-05-13
State Board of Administration of Florida Retirement System	CLOSED	0	112,084	-112,084	-100%	$56	$0	-$56	2016-05-04
UBS Group AG	CLOSED	0	107,859	-107,859	-100%	$55	$0	-$55	2016-05-12
Voya Investment Management LLC	CLOSED	0	84,580	-84,580	-100%	$43	$0	-$43	2016-05-16
American International Group, Inc.	CLOSED	0	82,640	-82,640	-100%	$42.0K	$0	-$42.0K	2016-05-12
AQR Capital Management LLC	CLOSED	0	69,064	-69,064	-100%	$35	$0	-$35	2016-08-01
Connor, Clark & Lunn Investment Management Ltd.	CLOSED	0	65,450	-65,450	-100%	$33	$0	-$33	2016-05-13
BlackRock Advisors LLC	CLOSED	0	58,377	-58,377	-100%	$29	$0	-$29	2016-05-12
Driehaus Capital Management LLC	CLOSED	0	55,245	-55,245	-100%	$28	$0	-$28	2016-05-13
Citigroup Inc	CLOSED	0	43,625	-43,625	-100%	$22	$0	-$22	2016-05-13
Stokes & Hubbell Capital Management, LLC	CLOSED	0	38,607	-38,607	-100%	$19	$0	-$19	2016-04-20
Deutsche Bank Ag\	CLOSED	0	34,767	-34,767	-100%	$16	$0	-$16	2016-05-16
Summit Financial Wealth Advisors, LLC	CLOSED	0	28,400	-28,400	-100%	$14	$0	-$14	2016-05-13
Guggenheim Capital LLC	CLOSED	0	27,542	-27,542	-100%	$14	$0	-$14	2016-05-16
Bayesian Capital Management, LP	CLOSED	0	23,100	-23,100	-100%	$12	$0	-$12	2016-05-16
Morgan Stanley	CLOSED	0	22,199	-22,199	-100%	$11	$0	-$11	2016-05-12
ProShare Advisors LLC	CLOSED	0	20,540	-20,540	-100%	$10	$0	-$10	2016-05-06
BNP Paribas Financial Markets	CLOSED	0	20,421	-20,421	-100%	$10.2K	$0	-$10.2K	2016-04-22
Principal Financial Group Inc	CLOSED	0	20,364	-20,364	-100%	$10	$0	-$10	2016-05-23
FNY Managed Accounts LLC	CLOSED	0	19,338	-19,338	-100%	$9.7K	$0	-$9.7K	2016-05-31
Squarepoint Ops LLC	CLOSED	0	19,200	-19,200	-100%	$10	$0	-$10	2016-05-16
Commonwealth Equity Services, Inc	CLOSED	0	19,200	-19,200	-100%	$10	$0	-$10	2016-04-27
Legal & General Group Plc	CLOSED	0	18,461	-18,461	-100%	$9	$0	-$9	2016-05-16
Cubist Systematic Strategies, LLC	CLOSED	0	18,120	-18,120	-100%	$9	$0	-$9	2016-05-16
Susquehanna International Group, LLP	CLOSED	0	14,248	-14,248	-100%	$7	$0	-$7	2016-05-13
Amalgamated Bank	CLOSED	0	13,644	-13,644	-100%	$7	$0	-$7	2016-05-11
Highbridge Capital Management LLC	CLOSED	0	13,596	-13,596	-100%	$7	$0	-$7	2016-05-16
Ameritas Investment Partners, Inc.	CLOSED	0	11,881	-11,881	-100%	$6	$0	-$6	2016-05-12
Shelton Capital Management	CLOSED	0	11,605	-11,605	-100%	$6	$0	-$6	2016-05-13
Nuveen Asset Management, LLC	CLOSED	0	10,021	-10,021	-100%	$5	$0	-$5	2016-05-13
Tower Research Capital LLC (TRC)	CLOSED	0	9,091	-9,091	-100%	$5	$0	-$5	2016-05-16
SEI Investments Co	CLOSED	0	7,054	-7,054	-100%	$4	$0	-$4	2016-05-10
Creative Planning	CLOSED	0	4,700	-4,700	-100%	$2	$0	-$2	2016-04-08
Ladenburg Thalmann Financial Services Inc	CLOSED	0	3,928	-3,928	-100%	$2	$0	-$2	2016-05-16
Bank of America Corp	CLOSED	0	3,804	-3,804	-100%	$2	$0	-$2	2016-05-13
Brown Brothers Harriman & Co	CLOSED	0	3,500	-3,500	-100%	$2	$0	-$2	2016-05-13
BlackRock Inc.	CLOSED	0	3,239	-3,239	-100%	$2	$0	-$2	2016-05-10
MetLife Securities, Inc	CLOSED	0	3,000	-3,000	-100%	$2	$0	-$2	2016-04-22
Royal Bank of Canada	CLOSED	0	2,073	-2,073	-100%	$1	$0	-$1	2016-06-08
PNC Financial Services Group, Inc.	CLOSED	0	881	-881	-100%	$0	$0	$0	2016-05-06
Manufacturers Life Insurance Company, the	CLOSED	0	717	-717	-100%	$0	$0	$0	2016-05-10
US Bancorp \de\	CLOSED	0	90	-90	-100%	$0	$0	$0	2016-05-13
Norges Bank	N/A	—	1,983,679	-1,983,679	-100%	$998	—	—	2017-05-10
Atherton Lane Advisers, LLC	N/A	—	18,900	-18,900	-100%	$10	—	—	—
Edelman Financial Group Inc.	N/A	—	5,000	-5,000	-100%	$3	—	—	—

Showing 83 of 83 institutions