William Blair Investment Management
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William Blair Investment Management’s Sterling Infrastructure STRL Stock Holding History

William Blair Investment Management’s Portfolio STRL Stock Details STRL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$188M Sell
223,697
-99,724
-31% -$70M 0.56% 43
2026
Q1 		$132M Buy
323,421
+282,167
+684% +$110M 0.44% 62
2025
Q4 		$12.6M Sell
41,254
-36,836
-47% -$12.7M 0.04% 302
2025
Q3 		$26.5M Buy
+78,090
New +$22.2M 0.07% 245

Other funds holding STRL

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 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
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

William Blair Investment Management's STRL Position: Q2 2026 in Review

William Blair Investment Management reduced its Sterling Infrastructure (STRL) stake by 31% in Q2 2026, selling an estimated $70M and leaving 223,697 shares worth $188M. The position accounts for 0.56% of the portfolio, ranked #43.

William Blair Investment Management first reported a position in STRL in Q3 2025 and has held it in 4 quarters since. 887 funds tracked by Wall St. Rank hold STRL as of Q2 2026.

  • William Blair Investment Management held 223,697 shares of Sterling Infrastructure worth $188M as of Q2 2026.
  • William Blair Investment Management sold 99,724 Sterling Infrastructure shares in Q2 2026, an estimated $70M.
  • Sterling Infrastructure made up 0.56% of William Blair Investment Management's portfolio in Q2 2026, its #43 holding.
  • William Blair Investment Management first reported a position in Sterling Infrastructure in Q3 2025 and has held it in 4 quarters since.
  • 887 funds tracked by Wall St. Rank held Sterling Infrastructure as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.