TUDOR INVESTMENT CORP ET AL - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044108. A total of 147 filers reported holding ION GEOPHYSICAL CORP in Q2 2014. The put-call ratio across all filers is 2.99 and the average weighting 0.0%.

Quarter-by-quarter ownership
TUDOR INVESTMENT CORP ET AL ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q3 2015$15,000
-62.5%
37,1850.0%0.00%0.0%
Q2 2015$40,000
-63.6%
37,185
-26.9%
0.00%
-75.0%
Q1 2015$110,000
-12.0%
50,861
+11.5%
0.00%0.0%
Q4 2014$125,000
-12.6%
45,603
-11.3%
0.00%
-20.0%
Q3 2014$143,000
+53.8%
51,420
+133.6%
0.01%
+25.0%
Q1 2014$93,000
-86.1%
22,009
-89.1%
0.00%
-87.9%
Q4 2013$668,000
+149.3%
202,460
+292.4%
0.03%
+200.0%
Q3 2013$268,000
+150.5%
51,600
+189.9%
0.01%
+37.5%
Q2 2013$107,00017,8000.01%
Other shareholders
ION GEOPHYSICAL CORP shareholders Q2 2014
NameSharesValueWeighting ↓
VILLERE ST DENIS J & CO LLC 13,745,184$71,475,0003.35%
Parametrica Management Ltd 23,896$124,0001.55%
PACIFIC GLOBAL INVESTMENT MANAGEMENT CO 272,275$1,416,0000.28%
Cortina Asset Management, LLC 1,224,368$6,367,0000.25%
WISCONSIN CAPITAL MANAGEMENT LLC 95,000$494,0000.21%
WealthTrust Axiom LLC 97,410$506,0000.21%
Quotient Investors, LLC 143,800$748,0000.20%
SNOW CAPITAL MANAGEMENT LP 664,175$3,454,0000.15%
Highlander Capital Management, LLC 26,500$137,800,0000.14%
NCM Capital Advisers, Inc. 22,900$119,0000.13%
View complete list of ION GEOPHYSICAL CORP shareholders