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 $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

William Blair & Company's BX Position: Q1 2026 in Review

William Blair & Company reduced its Blackstone (BX) stake by 14% in Q1 2026, selling an estimated $24.8M and leaving 1,178,612 shares worth $136M. The position accounts for 0.39% of the portfolio, ranked #58.

William Blair & Company first reported a position in BX in Q2 2013 and has held it in 51 quarters since. The position peaked at $233M in Q4 2024. 2,126 funds tracked by Wall St. Rank hold BX as of Q1 2026.

  • William Blair & Company held 1,178,612 shares of Blackstone worth $136M as of Q1 2026.
  • William Blair & Company sold 190,433 Blackstone shares in Q1 2026, an estimated $24.8M.
  • Blackstone made up 0.39% of William Blair & Company's portfolio in Q1 2026, its #58 holding.
  • William Blair & Company first reported a position in Blackstone in Q2 2013 and has held it in 51 quarters since.
  • William Blair & Company's Blackstone position peaked at $233M in Q4 2024.
  • 2,126 funds tracked by Wall St. Rank held Blackstone as of Q1 2026.

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