William Blair & Company
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William Blair & Company’s BWX Technologies BWXT Stock Holding History

William Blair & Company’s Portfolio BWXT Stock Details BWXT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2017
Q3 		– Sell
-100
Closed -$5K – 1379
2017
Q2 		$5K Buy
+100
New +$4.85K ﹤0.01% 1605

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Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
Alkeon Capital Management
Alkeon Capital Management New York $74.1B AUM 71.18% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

William Blair & Company's BWXT Position: Q2 2026 in Review

William Blair & Company increased its BWX Technologies (BWXT) stake by 8.2% in Q2 2026, buying an estimated $24.6M and bringing the position to 1,556,417 shares worth $303M. The position accounts for 0.79% of the portfolio, ranked #26.

William Blair & Company first reported a position in BWXT in Q3 2013 and has held it in 46 quarters since. 854 funds tracked by Wall St. Rank hold BWXT as of Q2 2026.

  • William Blair & Company held 1,556,417 shares of BWX Technologies worth $303M as of Q2 2026.
  • William Blair & Company bought 118,292 BWX Technologies shares in Q2 2026, an estimated $24.6M.
  • BWX Technologies made up 0.79% of William Blair & Company's portfolio in Q2 2026, its #26 holding.
  • William Blair & Company first reported a position in BWX Technologies in Q3 2013 and has held it in 46 quarters since.
  • 854 funds tracked by Wall St. Rank held BWX Technologies as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.