William Blair & Company
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William Blair & Company’s Sanofi SNY Stock Holding History

William Blair & Company’s Portfolio SNY Stock Details SNY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.1M Buy
43,593
+39,212
+895% +$1.83M 0.01% 724
2025
Q4 		$212K Sell
4,381
-48
-1% -$2.38K ﹤0.01% 1438
2025
Q3 		$209K Buy
+4,429
New +$214K ﹤0.01% 1451
2025
Q2 		– Sell
-4,427
Closed -$246K – 1894
2025
Q1 		$246K Buy
+4,427
New +$240K ﹤0.01% 1320
2024
Q4 		– Sell
-3,769
Closed -$217K – 1881
2024
Q3 		$217K Buy
+3,769
New +$203K ﹤0.01% 1408
2024
Q2 		– Sell
-4,205
Closed -$204K – 1878
2024
Q1 		$204K Buy
+4,205
New +$205K ﹤0.01% 1398
2023
Q3 		– Sell
-18,149
Closed -$978K – 1845
2023
Q2 		$978K Buy
18,149
+615
+4% +$33.1K ﹤0.01% 850
2023
Q1 		$954K Buy
17,534
+1,233
+8% +$60K ﹤0.01% 846
2022
Q4 		$789K Sell
16,301
-277
-2% -$12.2K ﹤0.01% 908
2022
Q3 		$630K Buy
16,578
+7,486
+82% +$334K ﹤0.01% 970
2022
Q2 		$455K Buy
+9,092
New +$483K ﹤0.01% 1098
2022
Q1 		– Sell
-4,722
Closed -$237K – 1996
2021
Q4 		$237K Buy
+4,722
New +$234K ﹤0.01% 1503
2021
Q3 		– Sell
-4,982
Closed -$262K – 1934
2021
Q2 		$262K Sell
4,982
-701
-12% -$36.6K ﹤0.01% 1400
2021
Q1 		$281K Buy
5,683
+916
+19% +$44K ﹤0.01% 1351
2020
Q4 		$232K Sell
4,767
-121
-2% -$5.97K ﹤0.01% 1366
2020
Q3 		$245K Buy
+4,888
New +$252K ﹤0.01% 1213
2020
Q1 		– Sell
-3,052
Closed -$153K – 1758
2019
Q4 		$153K Buy
3,052
+134
+5% +$6.28K ﹤0.01% 1349
2019
Q3 		$135K Buy
2,918
+817
+39% +$35.2K ﹤0.01% 1346
2019
Q2 		$91K Sell
2,101
-3,678
-64% -$156K ﹤0.01% 1435
2019
Q1 		$256K Sell
5,779
-272
-4% -$11.7K ﹤0.01% 1204
2018
Q4 		$263K Sell
6,051
-458
-7% -$20.2K ﹤0.01% 1132
2018
Q3 		$291K Hold
6,509
– – ﹤0.01% 1152
2018
Q2 		$260K Sell
6,509
-3,672
-36% -$145K ﹤0.01% 1178
2018
Q1 		$408K Sell
10,181
-8,863
-47% -$369K ﹤0.01% 987
2017
Q4 		$819K Sell
19,044
-4,429
-19% -$204K 0.01% 800
2017
Q3 		$1.17M Buy
23,473
+4,649
+25% +$225K 0.01% 685
2017
Q2 		$902K Buy
18,824
+5,635
+43% +$269K 0.01% 786
2017
Q1 		$570K Buy
13,189
+5,010
+61% +$213K ﹤0.01% 868
2016
Q4 		$331K Sell
8,179
-1,603
-16% -$63.2K ﹤0.01% 957
2016
Q3 		$374K Buy
9,782
+34
+0.3% +$1.36K ﹤0.01% 936
2016
Q2 		$408K Sell
9,748
-707
-7% -$29K ﹤0.01% 871
2016
Q1 		$420K Sell
10,455
-373
-3% -$15K ﹤0.01% 839
2015
Q4 		$461K Sell
10,828
-391
-3% -$18K ﹤0.01% 824
2015
Q3 		$532K Sell
11,219
-290
-3% -$14.8K ﹤0.01% 954
2015
Q2 		$570K Buy
11,509
+142
+1% +$7.2K ﹤0.01% 1718
2015
Q1 		$561K Sell
11,367
-35,403
-76% -$1.69M ﹤0.01% 1690
2014
Q4 		$2.13M Sell
46,770
-736
-2% -$35.7K ﹤0.01% 1266
2014
Q3 		$2.68M Buy
47,506
+35,987
+312% +$1.93M ﹤0.01% 1178
2014
Q2 		$612K Sell
11,519
-2,083
-15% -$111K ﹤0.01% 1607
2014
Q1 		$710K Sell
13,602
-26,342
-66% -$1.33M ﹤0.01% 1517
2013
Q4 		$2.14M Sell
39,944
-6,257
-14% -$323K ﹤0.01% 1156
2013
Q3 		$2.34M Sell
46,201
-2,792
-6% -$142K ﹤0.01% 1084
2013
Q2 		$2.52M Buy
+48,993
New +$2.61M 0.01% 1014

Other funds holding SNY

Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fisher Asset Management
Fisher Asset Management Camas, Washington $295B AUM 31.6% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
MIP
Mondrian Investment Partners London, United Kingdom $6.69B AUM
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return

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

William Blair & Company increased its Sanofi (SNY) stake by 895% in Q1 2026, buying an estimated $1.83M and bringing the position to 43,593 shares worth $2.1M. The position accounts for 0.01% of the portfolio, ranked #724.

William Blair & Company first reported a position in SNY in Q2 2013 and has held it in 43 quarters since. The position peaked at $2.68M in Q3 2014. 737 funds tracked by Wall St. Rank hold SNY as of Q1 2026.

  • William Blair & Company held 43,593 shares of Sanofi worth $2.1M as of Q1 2026.
  • William Blair & Company bought 39,212 Sanofi shares in Q1 2026, an estimated $1.83M.
  • Sanofi made up 0.01% of William Blair & Company's portfolio in Q1 2026, its #724 holding.
  • William Blair & Company first reported a position in Sanofi in Q2 2013 and has held it in 43 quarters since.
  • William Blair & Company's Sanofi position peaked at $2.68M in Q3 2014.
  • 737 funds tracked by Wall St. Rank held Sanofi as of Q1 2026.

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