Tocqueville Asset Management’s ION Geophysical Corporation IO Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2014
Q1
Sell
-38,440
Closed -$1.9M 1433
2013
Q4
$1.9M Sell
38,440
-5,078
-12% -$251K 0.03% 385
2013
Q3
$3.39M Sell
43,518
-2,746
-6% -$214K 0.04% 356
2013
Q2
$4.18M Buy
+46,264
New +$4.18M 0.06% 304