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 Q2	$11.6M	Buy	12,000 +9,100	+314%	+$6.94M	0.01%	973
2026 Q1	$1.14M	Sell	2,900 -7,500	-72%	-$2.86M	﹤0.01%	2078
2025 Q4	$2.86M	Buy	+10,400	New	+$2.7M	﹤0.01%	1413

Other funds holding STX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

WCM Investment Management Laguna Beach, California $55.2B AUM 57.07% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Marshall Wace's STX Position: Q2 2026 in Review

Marshall Wace increased its Seagate (STX) stake by 618% in Q2 2026, buying an estimated $68M and bringing the position to 103,612 shares worth $100M. The position accounts for 0.08% of the portfolio, ranked #200.

Marshall Wace first reported a position in STX in Q1 2014 and has held it in 21 quarters since. 1,958 funds tracked by Wall St. Rank hold STX as of Q2 2026.

Marshall Wace held 103,612 shares of Seagate worth $100M as of Q2 2026.
Marshall Wace bought 89,187 Seagate shares in Q2 2026, an estimated $68M.
Seagate made up 0.08% of Marshall Wace's portfolio in Q2 2026, its #200 holding.
Marshall Wace first reported a position in Seagate in Q1 2014 and has held it in 21 quarters since.
1,958 funds tracked by Wall St. Rank held Seagate as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.