Duquesne Family Office’s Seagate STX Stock Holding History

Duquesne Family Office’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 Q1	$19.9M	Buy	+50,700	New	+$19.3M	0.59%	37
2025 Q4	–	Sell	-85,900	Closed	-$20.3M	–	84
2025 Q3	$20.3M	Sell	85,900 -111,590	-57%	-$19M	0.5%	48
2025 Q2	$28.5M	Sell	197,490 -21,987	-10%	-$2.28M	0.7%	40
2025 Q1	$18.6M	Sell	219,477 -1,344,599	-86%	-$127M	0.61%	36
2024 Q4	$135M	Sell	1,564,076 -76,293	-5%	-$7.68M	3.63%	7
2024 Q3	$180M	Sell	1,640,369 -114,909	-7%	-$11.7M	6.09%	5
2024 Q2	$181M	Buy	1,755,278 +316,295	+22%	+$29.5M	6.21%	5
2024 Q1	$134M	Sell	1,438,983 -677,125	-32%	-$59.5M	3.05%	11
2023 Q4	$181M	Buy	2,116,108 +1,201,065	+131%	+$89.6M	5.39%	7
2023 Q3	$60.3M	Buy	+915,043	New	+$58.9M	2.17%	14

Other funds holding STX

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Sanders Capital West Palm Beach, Florida $83.9B AUM 37.89% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Duquesne Family Office's STX Position: Q1 2026 in Review

Duquesne Family Office opened a new position in Seagate (STX) in Q1 2026: 50,700 shares worth $19.9M. The stake represents 0.59% of the portfolio and ranks #37 among its holdings. This is a return to the name: Duquesne Family Office previously reported a position in STX as recently as Q3 2025.

Duquesne Family Office first reported a position in STX in Q3 2023 and has held it in 10 quarters since. The position peaked at $181M in Q2 2024. 1,455 funds tracked by Wall St. Rank hold STX as of Q1 2026.

Duquesne Family Office held 50,700 shares of Seagate worth $19.9M as of Q1 2026.
Seagate was a new Duquesne Family Office position in Q1 2026.
Seagate made up 0.59% of Duquesne Family Office's portfolio in Q1 2026, its #37 holding.
Duquesne Family Office first reported a position in Seagate in Q3 2023 and has held it in 10 quarters since.
Duquesne Family Office's Seagate position peaked at $181M in Q2 2024.
1,455 funds tracked by Wall St. Rank held Seagate as of Q1 2026.

Based on Duquesne Family Office's 13F filing for Q1 2026, filed 15 May 2026.