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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
2025
Q2 		– Sell
-246,500
Closed -$20.9M – 82
2025
Q1 		$20.9M Sell
246,500
-263,000
-52% -$24.9M 0.68% 34
2024
Q4 		$44M Buy
509,500
+246,500
+94% +$24.8M 1.18% 25
2024
Q3 		$28.8M Buy
+263,000
New +$26.9M 0.98% 23

Other funds holding STX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $55.2B AUM 57.07% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Duquesne Family Office's STX Position: Q2 2026 in Review

Duquesne Family Office increased its Seagate (STX) stake by 141% in Q2 2026, buying an estimated $54.4M and bringing the position to 122,000 shares worth $118M. The position accounts for 2.26% of the portfolio, ranked #13.

Duquesne Family Office first reported a position in STX in Q3 2023 and has held it in 11 quarters since. The position peaked at $181M in Q2 2024. 1,961 funds tracked by Wall St. Rank hold STX as of Q2 2026.

  • Duquesne Family Office held 122,000 shares of Seagate worth $118M as of Q2 2026.
  • Duquesne Family Office bought 71,300 Seagate shares in Q2 2026, an estimated $54.4M.
  • Seagate made up 2.26% of Duquesne Family Office's portfolio in Q2 2026, its #13 holding.
  • Duquesne Family Office first reported a position in Seagate in Q3 2023 and has held it in 11 quarters since.
  • Duquesne Family Office's Seagate position peaked at $181M in Q2 2024.
  • 1,961 funds tracked by Wall St. Rank held Seagate as of Q2 2026.

Based on Duquesne Family Office's 13F filing for Q2 2026, filed 14 Aug 2026.