William Blair & Company
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William Blair & Company’s Seagate STX Stock Holding History

William Blair & Company’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 		$1.65M Buy
4,222
+943
+29% +$360K ﹤0.01% 791
2025
Q4 		$903K Sell
3,279
-519
-14% -$135K ﹤0.01% 966
2025
Q3 		$897K Buy
3,798
+12
+0.3% +$2.05K ﹤0.01% 941
2025
Q2 		$546K Buy
3,786
+951
+34% +$98.5K ﹤0.01% 1063
2025
Q1 		$241K Buy
2,835
+157
+6% +$14.8K ﹤0.01% 1328
2024
Q4 		$231K Sell
2,678
-381
-12% -$38.4K ﹤0.01% 1389
2024
Q3 		$335K Buy
3,059
+16
+0.5% +$1.64K ﹤0.01% 1250
2024
Q2 		$314K Buy
+3,043
New +$284K ﹤0.01% 1252

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

William Blair & Company's STX Position: Q1 2026 in Review

William Blair & Company increased its Seagate (STX) stake by 29% in Q1 2026, buying an estimated $360K and bringing the position to 4,222 shares worth $1.65M. The position accounts for ﹤0.01% of the portfolio, ranked #791.

William Blair & Company first reported a position in STX in Q2 2024 and has held it in 8 quarters since. 1,455 funds tracked by Wall St. Rank hold STX as of Q1 2026.

  • William Blair & Company held 4,222 shares of Seagate worth $1.65M as of Q1 2026.
  • William Blair & Company bought 943 Seagate shares in Q1 2026, an estimated $360K.
  • Seagate made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #791 holding.
  • William Blair & Company first reported a position in Seagate in Q2 2024 and has held it in 8 quarters since.
  • 1,455 funds tracked by Wall St. Rank held Seagate as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.