AG
IO

Aperio Group’s ION Geophysical Corporation IO Stock Holding History

Aperio 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
Q1 		– Sell
-911
Closed -$38K – 2025
2014
Q4 		$38K Buy
911
+25
+3% +$983 ﹤0.01% 1862
2014
Q3 		$37K Sell
886
-1,804
-67% -$96.5K ﹤0.01% 1727
2014
Q2 		$170K Buy
2,690
+156
+6% +$9.83K ﹤0.01% 1641
2014
Q1 		$160K Buy
+2,534
New +$139K ﹤0.01% 1904

Other funds holding IO

Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BFA
BlackRock Fund Advisors San Francisco, California $542B AUM 18.13% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 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
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $935B AUM
PI
Putnam Investments Boston, Massachusetts $75.7B AUM 34.45% 1-Year Est. Return

Aperio Group's IO Position: Q1 2015 in Review

Aperio Group sold out of ION Geophysical Corporation (IO) in Q1 2015, closing a stake of 911 shares — an estimated $38K sold.

Aperio Group first reported a position in IO in Q1 2014 and held it in 4 quarters. The position peaked at $170K in Q2 2014. 135 funds tracked by Wall St. Rank hold IO as of Q1 2015.

  • Aperio Group reported no remaining ION Geophysical Corporation position as of Q1 2015 after selling out during the quarter.
  • Aperio Group sold 911 ION Geophysical Corporation shares in Q1 2015, an estimated $38K.
  • Aperio Group first reported a position in ION Geophysical Corporation in Q1 2014 and held it in 4 quarters.
  • Aperio Group's ION Geophysical Corporation position peaked at $170K in Q2 2014.
  • 135 funds tracked by Wall St. Rank held ION Geophysical Corporation as of Q1 2015.

Based on Aperio Group's 13F filing for Q1 2015, filed 29 Apr 2015.