Marshall Wace’s ION Geophysical Corporation IO Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Shares
Change %
Capital Flow Portfolio Weight Portfolio Position
2020
Q1
Sell
-12,306
Closed -$107K 2237
2019
Q4
$107K Buy
+12,306
New +$107K ﹤0.01% 1396