William Blair & Company
ARM icon

William Blair & Company’s Arm ARM Stock Holding History

William Blair & Company’s Portfolio ARM Stock Details ARM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$7.11M Buy
20,050
+4,003
+25% +$1.06M 0.02% 447
2026
Q1 		$2.43M Buy
16,047
+3,051
+23% +$370K 0.01% 676
2025
Q4 		$1.42M Sell
12,996
-875
-6% -$127K ﹤0.01% 839
2025
Q3 		$1.96M Sell
13,871
-3,446
-20% -$502K 0.01% 736
2025
Q2 		$2.8M Sell
17,317
-71,119
-80% -$8.83M 0.01% 635
2025
Q1 		$9.44M Buy
88,436
+11,056
+14% +$1.54M 0.03% 341
2024
Q4 		$9.55M Buy
77,380
+28,217
+57% +$3.98M 0.03% 351
2024
Q3 		$7.03M Buy
49,163
+43,643
+791% +$6.2M 0.02% 418
2024
Q2 		$903K Buy
5,520
+3,100
+128% +$385K ﹤0.01% 914
2024
Q1 		$302K Buy
+2,420
New +$256K ﹤0.01% 1252

Other funds holding ARM

Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
DZ Bank
DZ Bank Frankfurt Am Main, Germany $130B AUM 46.38% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

William Blair & Company's ARM Position: Q2 2026 in Review

William Blair & Company increased its Arm (ARM) stake by 25% in Q2 2026, buying an estimated $1.06M and bringing the position to 20,050 shares worth $7.11M. The position accounts for 0.02% of the portfolio, ranked #447.

William Blair & Company first reported a position in ARM in Q1 2024 and has held it in 10 quarters since. The position peaked at $9.55M in Q4 2024. 961 funds tracked by Wall St. Rank hold ARM as of Q2 2026.

  • William Blair & Company held 20,050 shares of Arm worth $7.11M as of Q2 2026.
  • William Blair & Company bought 4,003 Arm shares in Q2 2026, an estimated $1.06M.
  • Arm made up 0.02% of William Blair & Company's portfolio in Q2 2026, its #447 holding.
  • William Blair & Company first reported a position in Arm in Q1 2024 and has held it in 10 quarters since.
  • William Blair & Company's Arm position peaked at $9.55M in Q4 2024.
  • 961 funds tracked by Wall St. Rank held Arm as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.