BlackRock Investment Management, LLC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044108. A total of 1 filers reported holding ION GEOPHYSICAL CORP in Q1 2016. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
BlackRock Investment Management, LLC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q4 2015$255,000
+16.4%
507,388
-9.8%
0.00%
Q3 2015$219,000
-64.0%
562,636
-1.1%
0.00%
-100.0%
Q2 2015$609,000
-40.3%
568,730
+21.0%
0.00%0.0%
Q1 2015$1,020,000
-21.1%
469,875
+0.0%
0.00%
-50.0%
Q4 2014$1,292,000
-1.9%
469,869
-0.5%
0.00%0.0%
Q3 2014$1,317,000
-33.4%
472,189
+0.8%
0.00%
-33.3%
Q2 2014$1,976,000
-7.5%
468,324
-7.7%
0.00%0.0%
Q1 2014$2,136,000
+29.6%
507,478
+1.6%
0.00%
+50.0%
Q4 2013$1,648,000
-37.5%
499,243
-1.5%
0.00%
-50.0%
Q3 2013$2,636,000
-12.4%
506,980
+1.4%
0.00%
-20.0%
Q2 2013$3,009,000499,8700.01%
Other shareholders

There were no reported owners of ION GEOPHYSICAL CORP in Q1 2016.

NameSharesValueWeighting ↓
View complete list of ION GEOPHYSICAL CORP shareholders