Jane Street
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Jane Street’s Mustang Bio MBIO Stock Holding History

Jane Street’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
-14,126
Closed -$13.9K – 12411
2025
Q4 		$13.9K Buy
+14,126
New +$18.6K ﹤0.01% 10789
2024
Q3 		– Sell
-960
Closed -$22.7K – 10084
2024
Q2 		$22.7K Buy
+960
New +$18.3K ﹤0.01% 9029
2023
Q3 		– Sell
-236
Closed -$73.4K – 9073
2023
Q2 		$73.4K Buy
236
+205
+661% +$51.5K ﹤0.01% 8116
2023
Q1 		$8.45K Sell
31
-158
-84% -$64.8K ﹤0.01% 8758
2022
Q4 		$56.1K Buy
+189
New +$64.5K ﹤0.01% 8324
2021
Q4 		– Sell
-16
Closed -$33K – 10523
2021
Q3 		$33K Sell
16
-13
-45% -$27.9K ﹤0.01% 9659
2021
Q2 		$71K Buy
29
+13
+81% +$31.9K ﹤0.01% 9404
2021
Q1 		$39K Sell
16
-83
-84% -$247K ﹤0.01% 8883
2020
Q4 		$282K Buy
+99
New +$237K ﹤0.01% 6498
2019
Q3 		– Sell
-42
Closed -$117K – 5492
2019
Q2 		$117K Buy
+42
New +$120K ﹤0.01% 4820

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

Jane Street's MBIO Position: Q1 2026 in Review

Jane Street sold out of Mustang Bio (MBIO) in Q1 2026, closing a stake of 14,126 shares — an estimated $13.9K sold.

Jane Street first reported a position in MBIO in Q2 2019 and held it in 10 quarters. The position peaked at $282K in Q4 2020. 22 funds tracked by Wall St. Rank hold MBIO as of Q1 2026.

  • Jane Street reported no remaining Mustang Bio position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 14,126 Mustang Bio shares in Q1 2026, an estimated $13.9K.
  • Jane Street first reported a position in Mustang Bio in Q2 2019 and held it in 10 quarters.
  • Jane Street's Mustang Bio position peaked at $282K in Q4 2020.
  • 22 funds tracked by Wall St. Rank held Mustang Bio as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.