Marshall Wace
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Marshall Wace’s Seagate STX Stock Holding History

Marshall Wace’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 		$16.1M Buy
41,000
+32,000
+356% +$12.2M 0.02% 781
2025
Q4 		$2.48M Buy
+9,000
New +$2.34M ﹤0.01% 1478
2025
Q3 		– Sell
-196,600
Closed -$28.4M – 3380
2025
Q2 		$28.4M Buy
+196,600
New +$20.4M 0.03% 457

Other funds holding STX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Sanders Capital
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
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Marshall Wace's STX Position: Q1 2026 in Review

Marshall Wace reduced its Seagate (STX) stake by 33% in Q1 2026, selling an estimated $2.71M and leaving 14,425 shares worth $5.65M. The position accounts for 0.01% of the portfolio, ranked #1241.

Marshall Wace first reported a position in STX in Q1 2014 and has held it in 20 quarters since. The position peaked at $77.3M in Q4 2024. 1,455 funds tracked by Wall St. Rank hold STX as of Q1 2026.

  • Marshall Wace held 14,425 shares of Seagate worth $5.65M as of Q1 2026.
  • Marshall Wace sold 7,102 Seagate shares in Q1 2026, an estimated $2.71M.
  • Seagate made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #1241 holding.
  • Marshall Wace first reported a position in Seagate in Q1 2014 and has held it in 20 quarters since.
  • Marshall Wace's Seagate position peaked at $77.3M in Q4 2024.
  • 1,455 funds tracked by Wall St. Rank held Seagate as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.