William Blair Investment Management
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William Blair Investment Management’s STMicroelectronics STM Stock Holding History

William Blair Investment Management’s Portfolio STM Stock Details STM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$459K Sell
6,125
-811
-12% -$48.8K ﹤0.01% 373
2026
Q1 		$240K Buy
+6,936
New +$217K ﹤0.01% 406
2025
Q4 		– Sell
-8,259
Closed -$233K – 451
2025
Q3 		$233K Sell
8,259
-96
-1% -$2.68K ﹤0.01% 406
2025
Q2 		$254K Buy
+8,355
New +$207K ﹤0.01% 405
2019
Q3 		– Sell
-225,232
Closed -$3.97M – 386
2019
Q2 		$3.97M Buy
+225,232
New +$3.81M 0.02% 340
2017
Q2 		– Sell
-142,746
Closed -$2.21M – 472
2017
Q1 		$2.21M Buy
+142,746
New +$1.99M 0.01% 384

Other funds holding STM

VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return
SA
Situational Awareness San Francisco, California $20.2B AUM 612.59% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
WAM
WT Asset Management Hong Kong $5.05B AUM 589.49% 1-Year Est. Return
SPC
Slate Path Capital New York $7.22B AUM 110.75% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

William Blair Investment Management's STM Position: Q2 2026 in Review

William Blair Investment Management reduced its STMicroelectronics (STM) stake by 12% in Q2 2026, selling an estimated $48.8K and leaving 6,125 shares worth $459K. The position accounts for ﹤0.01% of the portfolio, ranked #373.

William Blair Investment Management first reported a position in STM in Q1 2017 and has held it in 6 quarters since. The position peaked at $3.97M in Q2 2019. 602 funds tracked by Wall St. Rank hold STM as of Q2 2026.

  • William Blair Investment Management held 6,125 shares of STMicroelectronics worth $459K as of Q2 2026.
  • William Blair Investment Management sold 811 STMicroelectronics shares in Q2 2026, an estimated $48.8K.
  • STMicroelectronics made up ﹤0.01% of William Blair Investment Management's portfolio in Q2 2026, its #373 holding.
  • William Blair Investment Management first reported a position in STMicroelectronics in Q1 2017 and has held it in 6 quarters since.
  • William Blair Investment Management's STMicroelectronics position peaked at $3.97M in Q2 2019.
  • 602 funds tracked by Wall St. Rank held STMicroelectronics as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.