Atika Capital Management’s Seagate STX Stock Holding History

Atika Capital Management’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 Q4	–	Sell	-234	Closed	-$5.52M	–	112
2025 Q3	$5.52M	Buy	+234	New	+$39.9K	0.44%	53

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

Atika Capital Management's STX Position: Q2 2026 in Review

Atika Capital Management increased its Seagate (STX) stake by 49% in Q2 2026, buying an estimated $20.1M and bringing the position to 79,865 shares worth $77.1M. The position accounts for 5.07% of the portfolio, ranked #3.

Atika Capital Management first reported a position in STX in Q3 2025 and has held it in 4 quarters since. 1,958 funds tracked by Wall St. Rank hold STX as of Q2 2026.

Atika Capital Management held 79,865 shares of Seagate worth $77.1M as of Q2 2026.
Atika Capital Management bought 26,365 Seagate shares in Q2 2026, an estimated $20.1M.
Seagate made up 5.07% of Atika Capital Management's portfolio in Q2 2026, its #3 holding.
Atika Capital Management first reported a position in Seagate in Q3 2025 and has held it in 4 quarters since.
1,958 funds tracked by Wall St. Rank held Seagate as of Q2 2026.

Based on Atika Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.