William Blair Investment Management
PANW icon

William Blair Investment Management’s Palo Alto Networks PANW Stock Holding History

William Blair Investment Management’s Portfolio PANW Stock Details PANW Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$20.9M Sell
130,453
-6,395
-5% -$1.07M 0.07% 252
2025
Q4 		$25.2M Buy
136,848
+43,089
+46% +$8.69M 0.07% 239
2025
Q3 		$19.1M Sell
93,759
-59,972
-39% -$11.5M 0.05% 287
2025
Q2 		$31.5M Sell
153,731
-1,035,967
-87% -$192M 0.08% 197
2025
Q1 		$203M Sell
1,189,698
-73,931
-6% -$13.7M 0.57% 44
2024
Q4 		$230M Sell
1,263,629
-321,769
-20% -$60.8M 0.56% 44
2024
Q3 		$271M Sell
1,585,398
-415,624
-21% -$70M 0.67% 33
2024
Q2 		$339M Buy
2,001,022
+147,844
+8% +$22.1M 0.89% 15
2024
Q1 		$263M Buy
1,853,178
+82,018
+5% +$12.9M 0.68% 33
2023
Q4 		$261M Buy
1,771,160
+144,160
+9% +$19.3M 0.76% 28
2023
Q3 		$191M Buy
1,627,000
+28,674
+2% +$3.39M 0.63% 41
2023
Q2 		$204M Buy
1,598,326
+265,268
+20% +$27.6M 0.65% 40
2023
Q1 		$133M Buy
1,333,058
+293,678
+28% +$24.9M 0.46% 72
2022
Q4 		$72.5M Buy
1,039,380
+1,001,690
+2,658% +$80.4M 0.28% 107
2022
Q3 		$3.09M Sell
37,690
-31,100
-45% -$2.69M 0.01% 340
2022
Q2 		$5.66M Sell
68,790
-16,956
-20% -$1.5M 0.02% 328
2022
Q1 		$8.9M Sell
85,746
-88,770
-51% -$7.94M 0.03% 326
2021
Q4 		$16.2M Sell
174,516
-106,110
-38% -$9.18M 0.04% 313
2021
Q3 		$22.4M Buy
+280,626
New +$19.7M 0.06% 295

Other funds holding PANW

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

William Blair Investment Management's PANW Position: Q1 2026 in Review

William Blair Investment Management reduced its Palo Alto Networks (PANW) stake by 4.7% in Q1 2026, selling an estimated $1.07M and leaving 130,453 shares worth $20.9M. The position accounts for 0.07% of the portfolio, ranked #252.

William Blair Investment Management first reported a position in PANW in Q3 2021 and has held it in 19 quarters since. The position peaked at $339M in Q2 2024. 2,460 funds tracked by Wall St. Rank hold PANW as of Q1 2026.

  • William Blair Investment Management held 130,453 shares of Palo Alto Networks worth $20.9M as of Q1 2026.
  • William Blair Investment Management sold 6,395 Palo Alto Networks shares in Q1 2026, an estimated $1.07M.
  • Palo Alto Networks made up 0.07% of William Blair Investment Management's portfolio in Q1 2026, its #252 holding.
  • William Blair Investment Management first reported a position in Palo Alto Networks in Q3 2021 and has held it in 19 quarters since.
  • William Blair Investment Management's Palo Alto Networks position peaked at $339M in Q2 2024.
  • 2,460 funds tracked by Wall St. Rank held Palo Alto Networks as of Q1 2026.

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