BOSTON ADVISORS LLC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044108. A total of 150 filers reported holding ION GEOPHYSICAL CORP in Q3 2014. The put-call ratio across all filers is 2.70 and the average weighting 0.0%.

Quarter-by-quarter ownership
BOSTON ADVISORS LLC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q4 2014$290,000
+37.4%
105,451
+39.3%
0.01%
+33.3%
Q3 2014$211,000
-33.9%
75,6890.0%0.01%
-35.7%
Q2 2014$319,000
+20.4%
75,689
+20.1%
0.01%
+16.7%
Q1 2014$265,00063,0310.01%
Other shareholders
ION GEOPHYSICAL CORP shareholders Q3 2014
NameSharesValueWeighting ↓
VILLERE ST DENIS J & CO LLC 10,309,119$34,020,0001.32%
LANDSCAPE CAPITAL MANAGEMENT, L.L.C. 141,508$467,0000.43%
NCM Capital Advisers, Inc. 121,100$400,0000.41%
US GLOBAL INVESTORS FUNDS 644,781$2,128,0000.38%
U S GLOBAL INVESTORS INC 644,781$2,128,0000.38%
Archer Capital Management, L.P. 736,200$2,429,0000.36%
Parametrica Management Ltd 38,546$127,0000.35%
Counsel Portfolio Services Inc. 577,175$1,905,0000.20%
TFS CAPITAL LLC 1,046,927$3,455,0000.16%
OTA Financial Group L.P. 68,629$226,0000.14%
View complete list of ION GEOPHYSICAL CORP shareholders