XT
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XTX Topco’s Mustang Bio MBIO Stock Holding History

XTX Topco’s Portfolio MBIO Stock Details MBIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-24,073
Closed -$23.6K – 4133
2025
Q4 		$23.6K Buy
24,073
+5,298
+28% +$6.99K ﹤0.01% 3024
2025
Q3 		$28.5K Buy
+18,775
New +$33.4K ﹤0.01% 2271
2025
Q1 		– Sell
-569
Closed -$5.03K – 2794
2024
Q4 		$5.03K Buy
+569
New +$6.28K ﹤0.01% 2197
2024
Q3 		– Sell
-345
Closed -$8.17K – 2389
2024
Q2 		$8.17K Buy
+345
New +$6.56K ﹤0.01% 1709
2022
Q1 		– Sell
-68
Closed -$85K – 842
2021
Q4 		$85K Buy
+68
New +$110K 0.05% 489

Other funds holding MBIO

KAS
Kestra Advisory Services Austin, Texas $26.4B AUM 21.05% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
CG
CFO4Life Group Coppell, Texas $656M AUM 17.88% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return

XTX Topco's MBIO Position: Q1 2026 in Review

XTX Topco sold out of Mustang Bio (MBIO) in Q1 2026, closing a stake of 24,073 shares — an estimated $23.6K sold.

XTX Topco first reported a position in MBIO in Q4 2021 and held it in 5 quarters. The position peaked at $85K in Q4 2021. 22 funds tracked by Wall St. Rank hold MBIO as of Q1 2026.

  • XTX Topco reported no remaining Mustang Bio position as of Q1 2026 after selling out during the quarter.
  • XTX Topco sold 24,073 Mustang Bio shares in Q1 2026, an estimated $23.6K.
  • XTX Topco first reported a position in Mustang Bio in Q4 2021 and held it in 5 quarters.
  • XTX Topco's Mustang Bio position peaked at $85K in Q4 2021.
  • 22 funds tracked by Wall St. Rank held Mustang Bio as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.