William Blair Investment Management
HAYW icon

William Blair Investment Management’s Hayward Holdings HAYW Stock Holding History

William Blair Investment Management’s Portfolio HAYW Stock Details HAYW Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$13.3M Sell
994,229
-828,014
-45% -$12.9M 0.04% 293
2025
Q4 		$28.2M Sell
1,822,243
-188,497
-9% -$2.98M 0.08% 210
2025
Q3 		$30.4M Buy
+2,010,740
New +$30.8M 0.08% 211

Other funds holding HAYW

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
FMI
Fiduciary Management Inc Milwaukee, Wisconsin $8.06B AUM 6.78% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
MCMU
MIC Capital Management (UK) London, United Kingdom $352M AUM 0.23% 1-Year Est. Return
GF
Greenhouse Funds Baltimore, Maryland $2.23B AUM 12.38% 1-Year Est. Return

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

William Blair Investment Management reduced its Hayward Holdings (HAYW) stake by 45% in Q1 2026, selling an estimated $12.9M and leaving 994,229 shares worth $13.3M. The position accounts for 0.04% of the portfolio, ranked #293.

William Blair Investment Management first reported a position in HAYW in Q3 2025 and has held it in 3 quarters since. The position peaked at $30.4M in Q3 2025. 300 funds tracked by Wall St. Rank hold HAYW as of Q1 2026.

  • William Blair Investment Management held 994,229 shares of Hayward Holdings worth $13.3M as of Q1 2026.
  • William Blair Investment Management sold 828,014 Hayward Holdings shares in Q1 2026, an estimated $12.9M.
  • Hayward Holdings made up 0.04% of William Blair Investment Management's portfolio in Q1 2026, its #293 holding.
  • William Blair Investment Management first reported a position in Hayward Holdings in Q3 2025 and has held it in 3 quarters since.
  • William Blair Investment Management's Hayward Holdings position peaked at $30.4M in Q3 2025.
  • 300 funds tracked by Wall St. Rank held Hayward Holdings as of Q1 2026.

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