William Blair & Company
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William Blair & Company’s Blackstone BX Stock Holding History

William Blair & Company’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
2017
Q3 		– Sell
-8,600
Closed -$287K – 1380
2017
Q2 		$287K Buy
8,600
+500
+6% +$15.7K ﹤0.01% 1208
2017
Q1 		$241K Buy
8,100
+1,500
+23% +$45.1K ﹤0.01% 1157
2016
Q4 		$178K Buy
+6,600
New +$171K ﹤0.01% 1167

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 $3.37T AUM 44.26% 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 & Company's BX Position: Q2 2026 in Review

William Blair & Company reduced its Blackstone (BX) stake by 14% in Q2 2026, selling an estimated $20.1M and leaving 1,011,005 shares worth $119M. The position accounts for 0.31% of the portfolio, ranked #74.

William Blair & Company first reported a position in BX in Q2 2013 and has held it in 52 quarters since. The position peaked at $233M in Q4 2024. 2,156 funds tracked by Wall St. Rank hold BX as of Q2 2026.

  • William Blair & Company held 1,011,005 shares of Blackstone worth $119M as of Q2 2026.
  • William Blair & Company sold 167,607 Blackstone shares in Q2 2026, an estimated $20.1M.
  • Blackstone made up 0.31% of William Blair & Company's portfolio in Q2 2026, its #74 holding.
  • William Blair & Company first reported a position in Blackstone in Q2 2013 and has held it in 52 quarters since.
  • William Blair & Company's Blackstone position peaked at $233M in Q4 2024.
  • 2,156 funds tracked by Wall St. Rank held Blackstone as of Q2 2026.

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