William Blair & Company
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William Blair & Company’s Entegris ENTG Stock Holding History

William Blair & Company’s Portfolio ENTG Stock Details ENTG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.19M Buy
10,112
+86
+0.9% +$10.2K ﹤0.01% 888
2025
Q4 		$845K Sell
10,026
-95
-0.9% -$8.25K ﹤0.01% 978
2025
Q3 		$936K Buy
10,121
+187
+2% +$15.9K ﹤0.01% 935
2025
Q2 		$801K Sell
9,934
-24
-0.2% -$1.82K ﹤0.01% 959
2025
Q1 		$871K Sell
9,958
-1,317
-12% -$133K ﹤0.01% 922
2024
Q4 		$1.12M Sell
11,275
-83
-0.7% -$8.75K ﹤0.01% 869
2024
Q3 		$1.28M Sell
11,358
-1,272
-10% -$151K ﹤0.01% 834
2024
Q2 		$1.71M Sell
12,630
-98
-0.8% -$12.9K 0.01% 725
2024
Q1 		$1.79M Sell
12,728
-726
-5% -$92.8K 0.01% 699
2023
Q4 		$1.61M Sell
13,454
-273
-2% -$27.7K 0.01% 723
2023
Q3 		$1.29M Sell
13,727
-2,364
-15% -$237K ﹤0.01% 764
2023
Q2 		$1.78M Buy
16,091
+346
+2% +$31.6K 0.01% 691
2023
Q1 		$1.29M Buy
15,745
+35
+0.2% +$2.84K 0.01% 771
2022
Q4 		$1.03M Sell
15,710
-2,545
-14% -$187K ﹤0.01% 812
2022
Q3 		$1.52M Buy
18,255
+182
+1% +$17.8K 0.01% 691
2022
Q2 		$1.67M Sell
18,073
-7
-0% -$759 0.01% 689
2022
Q1 		$2.37M Sell
18,080
-85
-0.5% -$10.9K 0.01% 660
2021
Q4 		$2.52M Buy
18,165
+10,084
+125% +$1.41M 0.01% 659
2021
Q3 		$1.02M Buy
8,081
+2,622
+48% +$316K ﹤0.01% 916
2021
Q2 		$671K Buy
5,459
+144
+3% +$16.5K ﹤0.01% 1057
2021
Q1 		$594K Sell
5,315
-269
-5% -$27.7K ﹤0.01% 1064
2020
Q4 		$537K Sell
5,584
-125
-2% -$10.9K ﹤0.01% 1061
2020
Q3 		$424K Sell
5,709
-332
-5% -$22.3K ﹤0.01% 1022
2020
Q2 		$357K Sell
6,041
-243
-4% -$13.5K ﹤0.01% 1030
2020
Q1 		$281K Buy
6,284
+1,701
+37% +$88.2K ﹤0.01% 1035
2019
Q4 		$230K Buy
+4,583
New +$221K ﹤0.01% 1257
2015
Q3 		– Sell
-10,082
Closed -$147K – 1447
2015
Q2 		$147K Buy
+10,082
New +$141K ﹤0.01% 2089

Other funds holding ENTG

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Principal Financial Group
Principal Financial Group Des Moines, Iowa $187B AUM 18.48% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

William Blair & Company's ENTG Position: Q1 2026 in Review

William Blair & Company increased its Entegris (ENTG) stake by 0.86% in Q1 2026, buying an estimated $10.2K and bringing the position to 10,112 shares worth $1.19M. The position accounts for ﹤0.01% of the portfolio, ranked #888.

William Blair & Company first reported a position in ENTG in Q2 2015 and has held it in 27 quarters since. The position peaked at $2.52M in Q4 2021. 643 funds tracked by Wall St. Rank hold ENTG as of Q1 2026.

  • William Blair & Company held 10,112 shares of Entegris worth $1.19M as of Q1 2026.
  • William Blair & Company bought 86 Entegris shares in Q1 2026, an estimated $10.2K.
  • Entegris made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #888 holding.
  • William Blair & Company first reported a position in Entegris in Q2 2015 and has held it in 27 quarters since.
  • William Blair & Company's Entegris position peaked at $2.52M in Q4 2021.
  • 643 funds tracked by Wall St. Rank held Entegris as of Q1 2026.

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