William Blair Investment Management
AZEK

William Blair Investment Management’s The AZEK Co AZEK Stock Holding History

William Blair Investment Management’s Portfolio AZEK Stock Details AZEK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-2,518,105
Closed -$123M – 421
2025
Q1 		$123M Sell
2,518,105
-889,224
-26% -$42.1M 0.35% 82
2024
Q4 		$162M Sell
3,407,329
-136,522
-4% -$6.52M 0.4% 83
2024
Q3 		$166M Buy
+3,543,851
New +$152M 0.41% 84

Other funds holding AZEK

Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
DKCM
Davidson Kempner Capital Management New York $7.33B AUM 56.47% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Barclays
Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return

William Blair Investment Management's AZEK Position: Q2 2025 in Review

William Blair Investment Management sold out of The AZEK Co (AZEK) in Q2 2025, closing a stake of 2,518,105 shares — an estimated $123M sold.

William Blair Investment Management first reported a position in AZEK in Q3 2024 and held it in 3 quarters. The position peaked at $166M in Q3 2024. 329 funds tracked by Wall St. Rank hold AZEK as of Q2 2025.

  • William Blair Investment Management reported no remaining The AZEK Co position as of Q2 2025 after selling out during the quarter.
  • William Blair Investment Management sold 2,518,105 The AZEK Co shares in Q2 2025, an estimated $123M.
  • William Blair Investment Management first reported a position in The AZEK Co in Q3 2024 and held it in 3 quarters.
  • William Blair Investment Management's The AZEK Co position peaked at $166M in Q3 2024.
  • 329 funds tracked by Wall St. Rank held The AZEK Co as of Q2 2025.

Based on William Blair Investment Management's 13F filing for Q2 2025, filed 29 Jul 2025.