Magnetar Financial’s Seagate STX Stock Holding History

Magnetar Financial’s Portfolio STX Stock Details STX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$565K	Buy	+585	New	+$446K	0.01%	588
2020 Q3	–	Sell	-12,390	Closed	-$600K	–	729
2020 Q2	$600K	Buy	+12,390	New	+$622K	0.02%	247
2017 Q3	–	Sell	-49,311	Closed	-$1.91M	–	910
2017 Q2	$1.91M	Sell	49,311 -9,038	-15%	-$394K	0.03%	246
2017 Q1	$2.68M	Buy	+58,349	New	+$2.59M	0.04%	151
2016 Q4	–	Sell	-5,363	Closed	-$207K	–	334
2016 Q3	$207K	Buy	+5,363	New	+$174K	﹤0.01%	506
2015 Q4	–	Sell	-13,056	Closed	-$585K	–	464
2015 Q3	$585K	Buy	+13,056	New	+$632K	0.01%	189

Other funds holding STX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

WCM Investment Management Laguna Beach, California $55.2B AUM 57.07% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Magnetar Financial's STX Position: Q2 2026 in Review

Magnetar Financial opened a new position in Seagate (STX) in Q2 2026: 585 shares worth $565K. The stake represents 0.01% of the portfolio and ranks #588 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in STX as recently as Q2 2020.

Magnetar Financial first reported a position in STX in Q3 2015 and has held it in 6 quarters since. The position peaked at $2.68M in Q1 2017. 1,958 funds tracked by Wall St. Rank hold STX as of Q2 2026.

Magnetar Financial held 585 shares of Seagate worth $565K as of Q2 2026.
Seagate was a new Magnetar Financial position in Q2 2026.
Seagate made up 0.01% of Magnetar Financial's portfolio in Q2 2026, its #588 holding.
Magnetar Financial first reported a position in Seagate in Q3 2015 and has held it in 6 quarters since.
Magnetar Financial's Seagate position peaked at $2.68M in Q1 2017.
1,958 funds tracked by Wall St. Rank held Seagate as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.