A.R.T. Advisors’s ION Geophysical Corporation IO Stock Holding History

A.R.T. Advisors’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
2020 Q1	–	Sell	-21,451	Closed	-$186K	–	1270
2019 Q4	$186K	Buy	+21,451	New	+$186K	0.01%	1166
2019 Q1	–	Sell	-17,445	Closed	-$90K	–	1808
2018 Q4	$90K	Buy	+17,445	New	+$177K	0.01%	1174
2018 Q2	–	Sell	-13,943	Closed	-$377K	–	1990
2018 Q1	$377K	Buy	+13,943	New	+$331K	0.02%	1062
2017 Q2	–	Sell	-41,680	Closed	-$202K	–	1970
2017 Q1	$202K	Buy	41,680 +27,820	+201%	+$143K	0.01%	1168
2016 Q4	$83K	Buy	+13,860	New	+$95K	0.01%	1171
2013 Q3	–	Sell	-1,938	Closed	-$175K	–	1667
2013 Q2	$175K	Buy	+1,938	New	+$181K	0.01%	1181

Other funds holding IO

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Deutsche Bank Frankfurt Am Main Ge, Germany $303B AUM 30.15% 1-Year Est. Return

GCM

Gates Capital Management New York $3.66B AUM 12.63% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

GCP

GSA Capital Partners London, United Kingdom $1.61B AUM 28.28% 1-Year Est. Return

Jacobs Levy Equity Management Florham Park, New Jersey $23.8B AUM 25.4% 1-Year Est. Return

A.R.T. Advisors's IO Position: Q1 2020 in Review

A.R.T. Advisors sold out of ION Geophysical Corporation (IO) in Q1 2020, closing a stake of 21,451 shares — an estimated $186K sold.

A.R.T. Advisors first reported a position in IO in Q2 2013 and held it in 6 quarters. The position peaked at $377K in Q1 2018. 42 funds tracked by Wall St. Rank hold IO as of Q1 2020.

A.R.T. Advisors reported no remaining ION Geophysical Corporation position as of Q1 2020 after selling out during the quarter.
A.R.T. Advisors sold 21,451 ION Geophysical Corporation shares in Q1 2020, an estimated $186K.
A.R.T. Advisors first reported a position in ION Geophysical Corporation in Q2 2013 and held it in 6 quarters.
A.R.T. Advisors's ION Geophysical Corporation position peaked at $377K in Q1 2018.
42 funds tracked by Wall St. Rank held ION Geophysical Corporation as of Q1 2020.

Based on A.R.T. Advisors's 13F filing for Q1 2020, filed 15 May 2020.