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Cubist Systematic Strategies’s Seagate STX Stock Holding History

Cubist Systematic Strategies’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
Q3 		$42.1M Buy
178,200
+151,700
+572% +$25.9M 0.2% 101
2025
Q2 		$3.82M Sell
26,500
-32,500
-55% -$3.36M 0.02% 1188
2025
Q1 		$5.01M Buy
59,000
+55,500
+1,586% +$5.25M 0.03% 884
2024
Q4 		$302K Sell
3,500
-2,300
-40% -$232K ﹤0.01% 2406
2024
Q3 		$635K Sell
5,800
-100
-2% -$10.2K ﹤0.01% 2094
2024
Q2 		$609K Sell
5,900
-1,100
-16% -$103K ﹤0.01% 2027
2024
Q1 		$651K Sell
7,000
-2,000
-22% -$176K ﹤0.01% 2457
2023
Q4 		$768K Sell
9,000
-42,000
-82% -$3.13M 0.01% 2260
2023
Q3 		$3.36M Buy
51,000
+5,900
+13% +$380K 0.02% 1012
2023
Q2 		$2.79M Buy
45,100
+16,500
+58% +$1.01M 0.02% 1242
2023
Q1 		$1.89M Sell
28,600
-60,400
-68% -$3.84M 0.01% 1714
2022
Q4 		$4.68M Buy
89,000
+69,500
+356% +$3.69M 0.03% 1079
2022
Q3 		$1.04M Sell
19,500
-39,100
-67% -$2.83M 0.01% 2595
2022
Q2 		$4.19M Buy
+58,600
New +$4.76M 0.03% 1153

Other funds holding STX

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Sanders Capital
Sanders Capital West Palm Beach, Florida $83.9B AUM 37.89% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
WCM Investment Management
WCM Investment Management Laguna Beach, California $43.8B AUM 42.28% 1-Year Est. Return

Cubist Systematic Strategies's STX Position: Q3 2025 in Review

Cubist Systematic Strategies sold out of Seagate (STX) in Q3 2025, closing a stake of 59,977 shares — an estimated $10.2M sold.

Cubist Systematic Strategies first reported a position in STX in Q2 2014 and held it in 40 quarters. The position peaked at $21.9M in Q2 2021. 1,123 funds tracked by Wall St. Rank hold STX as of Q3 2025.

  • Cubist Systematic Strategies reported no remaining Seagate position as of Q3 2025 after selling out during the quarter.
  • Cubist Systematic Strategies sold 59,977 Seagate shares in Q3 2025, an estimated $10.2M.
  • Cubist Systematic Strategies first reported a position in Seagate in Q2 2014 and held it in 40 quarters.
  • Cubist Systematic Strategies's Seagate position peaked at $21.9M in Q2 2021.
  • 1,123 funds tracked by Wall St. Rank held Seagate as of Q3 2025.

Based on Cubist Systematic Strategies's 13F filing for Q3 2025, filed 14 Nov 2025.