William Blair Investment Management
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William Blair Investment Management’s Certara CERT Stock Holding History

William Blair Investment Management’s Portfolio CERT Stock Details CERT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q1 		– Sell
-13,827
Closed -$147K – 431
2024
Q4 		$147K Sell
13,827
-1,586,410
-99% -$17.2M ﹤0.01% 433
2024
Q3 		$18.7M Sell
1,600,237
-3,616,651
-69% -$47.7M 0.05% 307
2024
Q2 		$72.3M Sell
5,216,888
-502,902
-9% -$8.26M 0.19% 124
2024
Q1 		$102M Sell
5,719,790
-1,322,526
-19% -$22.8M 0.26% 114
2023
Q4 		$124M Sell
7,042,316
-108,598
-2% -$1.59M 0.36% 93
2023
Q3 		$104M Buy
7,150,914
+77,805
+1% +$1.31M 0.35% 91
2023
Q2 		$129M Buy
7,073,109
+46,323
+0.7% +$978K 0.41% 84
2023
Q1 		$169M Buy
7,026,786
+294,183
+4% +$5.81M 0.59% 52
2022
Q4 		$108M Buy
6,732,603
+1,634,607
+32% +$23.7M 0.41% 84
2022
Q3 		$67.7M Sell
5,097,996
-277,158
-5% -$5.12M 0.27% 108
2022
Q2 		$115M Sell
5,375,154
-161,854
-3% -$3.2M 0.43% 85
2022
Q1 		$119M Sell
5,537,008
-3,670
-0.1% -$88.2K 0.36% 97
2021
Q4 		$157M Buy
5,540,678
+1,034,482
+23% +$34.8M 0.43% 85
2021
Q3 		$149M Sell
4,506,196
-266,570
-6% -$8.04M 0.42% 86
2021
Q2 		$135M Sell
4,772,766
-66,949
-1% -$1.86M 0.42% 91
2021
Q1 		$132M Buy
4,839,715
+4,657,379
+2,554% +$155M 0.43% 90
2020
Q4 		$6.15M Buy
+182,336
New +$6.68M 0.02% 328

Other funds holding CERT

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
ACH
ArrowMark Colorado Holdings Denver, Colorado $3.76B AUM 21.77% 1-Year Est. Return
GCM
Geneva Capital Management Milwaukee, Wisconsin $4.71B AUM 6.32% 1-Year Est. Return
Teacher Retirement System of Texas
Teacher Retirement System of Texas Austin, Texas $24B AUM 29.51% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
BBHC
Brown Brothers Harriman & Co New York $18.6B AUM 15.81% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

William Blair Investment Management's CERT Position: Q1 2025 in Review

William Blair Investment Management sold out of Certara (CERT) in Q1 2025, closing a stake of 13,827 shares — an estimated $147K sold.

William Blair Investment Management first reported a position in CERT in Q4 2020 and held it in 17 quarters. The position peaked at $169M in Q1 2023. 239 funds tracked by Wall St. Rank hold CERT as of Q1 2025.

  • William Blair Investment Management reported no remaining Certara position as of Q1 2025 after selling out during the quarter.
  • William Blair Investment Management sold 13,827 Certara shares in Q1 2025, an estimated $147K.
  • William Blair Investment Management first reported a position in Certara in Q4 2020 and held it in 17 quarters.
  • William Blair Investment Management's Certara position peaked at $169M in Q1 2023.
  • 239 funds tracked by Wall St. Rank held Certara as of Q1 2025.

Based on William Blair Investment Management's 13F filing for Q1 2025, filed 9 May 2025.