Wellington Management Group
IO

Wellington Management Group’s ION Geophysical Corporation IO Stock Holding History

Wellington Management Group’s Portfolio IO Stock Details IO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2015
Q4 		– Sell
-13,224
Closed -$78K – 2329
2015
Q3 		$78K Hold
13,224
– – ﹤0.01% 2148
2015
Q2 		$212K Hold
13,224
– – ﹤0.01% 2095
2015
Q1 		$430K Hold
13,224
– – ﹤0.01% 2019
2014
Q4 		$546K Buy
13,224
+6,204
+88% +$244K ﹤0.01% 1984
2014
Q3 		$294K Buy
7,020
+53
+0.8% +$2.83K ﹤0.01% 2076
2014
Q2 		$441K Sell
6,967
-16,760
-71% -$1.06M ﹤0.01% 1998
2014
Q1 		$1.5M Hold
23,727
– – ﹤0.01% 1748
2013
Q4 		$1.18M Sell
23,727
-425,372
-95% -$25.8M ﹤0.01% 1812
2013
Q3 		$35M Sell
449,099
-144,706
-24% -$11.9M 0.01% 819
2013
Q2 		$53.6M Buy
+593,805
New +$55.4M 0.02% 674

Other funds holding IO

Invesco
Invesco Atlanta, Georgia $653B AUM 32.41% 1-Year Est. Return
CPS
Counsel Portfolio Services Mississauga, Ontario, Canada $1.01B AUM 2.83% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $501B AUM 22.01% 1-Year Est. Return
BFA
BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return
BIT
BlackRock Institutional Trust San Francisco, California $675B AUM 16.07% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return