BlackRock Advisors’s ION Geophysical Corporation IO Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2016
Q4
$9K Hold
2016
Q3
$10K Hold
2016
Q2
$9K Sell
2016
Q1
$31K Sell
2015
Q4
$29K Sell
2015
Q3
$35K Hold
2015
Q2
$97K Buy
2015
Q1
$177K Buy
2014
Q4
$196K Sell
2014
Q3
$210K Sell
2014
Q2
$2.71M Sell
2014
Q1
$2.89M Sell
2013
Q4
$3.18M Buy
2013
Q3
$3.61M Buy
2013
Q2
$530K Buy