William Blair Investment Management
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William Blair Investment Management’s Blackstone BX Stock Holding History

William Blair Investment Management’s Portfolio BX Stock Details BX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.96M Sell
42,124
-4,753
-10% -$571K 0.01% 330
2026
Q1 		$5.39M Buy
46,877
+63
+0.1% +$8.2K 0.02% 334
2025
Q4 		$7.22M Buy
46,814
+45,385
+3,176% +$6.9M 0.02% 330
2025
Q3 		$244K Buy
+1,429
New +$245K ﹤0.01% 403

Other funds holding BX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return

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

William Blair Investment Management reduced its Blackstone (BX) stake by 10% in Q2 2026, selling an estimated $571K and leaving 42,124 shares worth $4.96M. The position accounts for 0.01% of the portfolio, ranked #330.

William Blair Investment Management first reported a position in BX in Q3 2025 and has held it in 4 quarters since. The position peaked at $7.22M in Q4 2025. 2,166 funds tracked by Wall St. Rank hold BX as of Q2 2026.

  • William Blair Investment Management held 42,124 shares of Blackstone worth $4.96M as of Q2 2026.
  • William Blair Investment Management sold 4,753 Blackstone shares in Q2 2026, an estimated $571K.
  • Blackstone made up 0.01% of William Blair Investment Management's portfolio in Q2 2026, its #330 holding.
  • William Blair Investment Management first reported a position in Blackstone in Q3 2025 and has held it in 4 quarters since.
  • William Blair Investment Management's Blackstone position peaked at $7.22M in Q4 2025.
  • 2,166 funds tracked by Wall St. Rank held Blackstone as of Q2 2026.

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