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	$45.5M	Buy	192,700 +175,300	+1,007%	+$29.9M	0.22%	85
2025 Q2	$2.51M	Sell	17,400 -5,300	-23%	-$549K	0.01%	1449
2025 Q1	$1.93M	Buy	22,700 +22,600	+22,600%	+$2.14M	0.01%	1446
2024 Q4	$8.63K	Buy	+100	New	+$10.1K	﹤0.01%	2865
2024 Q1	–	Sell	-14,800	Closed	-$1.26M	–	4248
2023 Q4	$1.26M	Sell	14,800 -36,400	-71%	-$2.72M	0.01%	1865
2023 Q3	$3.38M	Sell	51,200 -6,400	-11%	-$412K	0.02%	1010
2023 Q2	$3.56M	Buy	57,600 +15,600	+37%	+$953K	0.02%	1054
2023 Q1	$2.78M	Sell	42,000 -58,900	-58%	-$3.75M	0.02%	1405
2022 Q4	$5.31M	Buy	100,900 +91,900	+1,021%	+$4.89M	0.03%	962
2022 Q3	$479K	Sell	9,000 -26,700	-75%	-$1.93M	﹤0.01%	3198
2022 Q2	$2.55M	Buy	+35,700	New	+$2.9M	0.02%	1622

Other funds holding STX

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

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

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

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

Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

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

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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.