Magnetar Financial’s Oil States International OIS Stock Holding History

Magnetar Financial’s Portfolio OIS Stock Details OIS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$614K	Buy	+52,722	New	+$544K	0.01%	592
2018 Q3	–	Sell	-15,272	Closed	-$490K	–	647
2018 Q2	$490K	Buy	+15,272	New	+$514K	0.01%	280
2017 Q4	–	Sell	-23,399	Closed	-$593K	–	839
2017 Q3	$593K	Buy	23,399 +8,050	+52%	+$198K	0.01%	397
2017 Q2	$417K	Buy	+15,349	New	+$455K	0.01%	526
2016 Q4	–	Sell	-8,419	Closed	-$266K	–	282
2016 Q3	$266K	Buy	+8,419	New	+$259K	﹤0.01%	474
2015 Q3	–	Sell	-10,785	Closed	-$402K	–	483
2015 Q2	$402K	Buy	+10,785	New	+$454K	0.01%	337
2014 Q2	–	Sell	-10,150	Closed	-$572K	–	226
2014 Q1	$572K	Sell	10,150 -177,350	-95%	-$9.83M	0.01%	190
2013 Q4	$10.9M	Sell	187,500 -612,660	-77%	-$36.7M	0.22%	82
2013 Q3	$47.3M	Buy	800,160 +646,165	+420%	+$35.3M	0.78%	33
2013 Q2	$8.15M	Buy	+153,995	New	+$7.86M	0.18%	105

Other funds holding OIS

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

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Magnetar Financial's OIS Position: Q1 2026 in Review

Magnetar Financial opened a new position in Oil States International (OIS) in Q1 2026: 52,722 shares worth $614K. The stake represents 0.01% of the portfolio and ranks #592 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in OIS as recently as Q2 2018.

Magnetar Financial first reported a position in OIS in Q2 2013 and has held it in 10 quarters since. The position peaked at $47.3M in Q3 2013. 215 funds tracked by Wall St. Rank hold OIS as of Q1 2026.

Magnetar Financial held 52,722 shares of Oil States International worth $614K as of Q1 2026.
Oil States International was a new Magnetar Financial position in Q1 2026.
Oil States International made up 0.01% of Magnetar Financial's portfolio in Q1 2026, its #592 holding.
Magnetar Financial first reported a position in Oil States International in Q2 2013 and has held it in 10 quarters since.
Magnetar Financial's Oil States International position peaked at $47.3M in Q3 2013.
215 funds tracked by Wall St. Rank held Oil States International as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.