PARAMETRIC PORTFOLIO ASSOCIATES LLC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044108. A total of 141 filers reported holding ION GEOPHYSICAL CORP in Q4 2014. The put-call ratio across all filers is 35.97 and the average weighting 0.0%.

Quarter-by-quarter ownership
PARAMETRIC PORTFOLIO ASSOCIATES LLC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q4 2015$231,000
+25.5%
459,342
-2.7%
0.00%
Q3 2015$184,000
-64.3%
471,864
-2.2%
0.00%
-100.0%
Q2 2015$516,000
-53.4%
482,546
-5.5%
0.00%
-50.0%
Q1 2015$1,108,000
-3.8%
510,728
+21.9%
0.00%0.0%
Q4 2014$1,152,000
+95.3%
418,968
+98.2%
0.00%
+100.0%
Q3 2014$590,000
-38.6%
211,372
-7.1%
0.00%
-50.0%
Q2 2014$961,000
-4.6%
227,624
-4.8%
0.00%0.0%
Q1 2014$1,007,000
+31.1%
239,100
+2.7%
0.00%0.0%
Q4 2013$768,000
-30.0%
232,724
+10.3%
0.00%
-33.3%
Q3 2013$1,097,000
-9.0%
211,052
+5.4%
0.00%
-25.0%
Q2 2013$1,206,000200,2650.00%
Other shareholders

There were no reported owners of ION GEOPHYSICAL CORP in Q4 2014.

NameSharesValueWeighting ↓
View complete list of ION GEOPHYSICAL CORP shareholders