William Blair Investment Management
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William Blair Investment Management’s Teradyne TER Stock Holding History

William Blair Investment Management’s Portfolio TER Stock Details TER Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-684,578
Closed -$133M – 452
2025
Q4 		$133M Sell
684,578
-90,885
-12% -$15.6M 0.37% 72
2025
Q3 		$107M Buy
+775,463
New +$84.7M 0.28% 98

Other funds holding TER

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
Alkeon Capital Management
Alkeon Capital Management New York $59.5B AUM 51.63% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

William Blair Investment Management's TER Position: Q1 2026 in Review

William Blair Investment Management sold out of Teradyne (TER) in Q1 2026, closing a stake of 684,578 shares — an estimated $133M sold.

William Blair Investment Management first reported a position in TER in Q3 2025 and held it in 2 quarters. The position peaked at $133M in Q4 2025. 1,223 funds tracked by Wall St. Rank hold TER as of Q1 2026.

  • William Blair Investment Management reported no remaining Teradyne position as of Q1 2026 after selling out during the quarter.
  • William Blair Investment Management sold 684,578 Teradyne shares in Q1 2026, an estimated $133M.
  • William Blair Investment Management first reported a position in Teradyne in Q3 2025 and held it in 2 quarters.
  • William Blair Investment Management's Teradyne position peaked at $133M in Q4 2025.
  • 1,223 funds tracked by Wall St. Rank held Teradyne as of Q1 2026.

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