William Blair Investment Management
BSY icon

William Blair Investment Management’s Bentley Systems BSY Stock Holding History

William Blair Investment Management’s Portfolio BSY Stock Details BSY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$117M Buy
3,322,723
+707,550
+27% +$26M 0.39% 71
2025
Q4 		$99.8M Sell
2,615,173
-316,123
-11% -$14.4M 0.28% 99
2025
Q3 		$151M Buy
+2,931,296
New +$161M 0.39% 70

Other funds holding BSY

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $94.8B AUM 24.11% 1-Year Est. Return

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

William Blair Investment Management increased its Bentley Systems (BSY) stake by 27% in Q1 2026, buying an estimated $26M and bringing the position to 3,322,723 shares worth $117M. The position accounts for 0.39% of the portfolio, ranked #71.

William Blair Investment Management first reported a position in BSY in Q3 2025 and has held it in 3 quarters since. The position peaked at $151M in Q3 2025. 441 funds tracked by Wall St. Rank hold BSY as of Q1 2026.

  • William Blair Investment Management held 3,322,723 shares of Bentley Systems worth $117M as of Q1 2026.
  • William Blair Investment Management bought 707,550 Bentley Systems shares in Q1 2026, an estimated $26M.
  • Bentley Systems made up 0.39% of William Blair Investment Management's portfolio in Q1 2026, its #71 holding.
  • William Blair Investment Management first reported a position in Bentley Systems in Q3 2025 and has held it in 3 quarters since.
  • William Blair Investment Management's Bentley Systems position peaked at $151M in Q3 2025.
  • 441 funds tracked by Wall St. Rank held Bentley Systems as of Q1 2026.

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