JY
MBIO icon

Jeff Yass’s Mustang Bio MBIO Stock Holding History

Jeff Yass’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
Q2 		$9.59K Buy
+13,664
New +$9.71K ﹤0.01% 13139
2024
Q4 		– Sell
-1,326
Closed -$15.6K – 12809
2024
Q3 		$15.6K Buy
+1,326
New +$21.9K ﹤0.01% 11666
2024
Q1 		– Sell
-852
Closed -$57.5K – 12850
2023
Q4 		$57.5K Buy
852
+200
+31% +$15.9K ﹤0.01% 11658
2023
Q3 		$66.9K Buy
+652
New +$127K ﹤0.01% 11155
2023
Q2 		– Sell
-52
Closed -$14.3K – 12707
2023
Q1 		$14.3K Buy
52
+30
+136% +$12.3K ﹤0.01% 12135
2022
Q4 		$6.65K Buy
+22
New +$7.51K ﹤0.01% 12007
2022
Q3 		– Sell
-179
Closed -$79K – 13749
2022
Q2 		$79K Buy
179
+158
+752% +$87.5K ﹤0.01% 11676
2022
Q1 		$16K Sell
21
-79
-79% -$64.9K ﹤0.01% 12681
2021
Q4 		$124K Sell
100
-21
-17% -$33.9K ﹤0.01% 11981
2021
Q3 		$243K Sell
121
-74
-38% -$159K ﹤0.01% 11066
2021
Q2 		$486K Buy
195
+92
+89% +$226K ﹤0.01% 9662
2021
Q1 		$258K Buy
103
+64
+164% +$190K ﹤0.01% 10927
2020
Q4 		$110K Sell
39
-137
-78% -$327K ﹤0.01% 10451
2020
Q3 		$415K Buy
176
+91
+107% +$224K ﹤0.01% 8063
2020
Q2 		$203K Buy
85
+29
+52% +$67.8K ﹤0.01% 9017
2020
Q1 		$112K Buy
+56
New +$144K ﹤0.01% 9241
2019
Q4 		– Sell
-16
Closed -$36.6K – 10254
2019
Q3 		$40K Buy
16
+2
+14% +$5.47K ﹤0.01% 9841
2019
Q2 		$39K Buy
+14
New +$40K ﹤0.01% 9894
2018
Q2 		– Sell
-105
Closed -$863K – 10058
2018
Q1 		$863K Buy
+105
New +$894K ﹤0.01% 5567

Other funds holding MBIO

KAS
Kestra Advisory Services Austin, Texas $31B AUM 28.39% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
CG
CFO4Life Group Coppell, Texas $743M AUM 25.26% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
VF
Virtu Financial New York $3.18B AUM 65.92% 1-Year Est. Return
TSS
Two Sigma Securities New York $1.16B AUM 36.23% 1-Year Est. Return

Jeff Yass's MBIO Position: Q2 2026 in Review

Jeff Yass opened a new position in Mustang Bio (MBIO) in Q2 2026: 13,664 shares worth $9.59K. The stake represents ﹤0.01% of the portfolio and ranks #13139 among its holdings. This is a return to the name: Jeff Yass previously reported a position in MBIO as recently as Q3 2024.

Jeff Yass first reported a position in MBIO in Q1 2018 and has held it in 19 quarters since. The position peaked at $863K in Q1 2018. 23 funds tracked by Wall St. Rank hold MBIO as of Q2 2026.

  • Jeff Yass held 13,664 shares of Mustang Bio worth $9.59K as of Q2 2026.
  • Mustang Bio was a new Jeff Yass position in Q2 2026.
  • Mustang Bio made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #13139 holding.
  • Jeff Yass first reported a position in Mustang Bio in Q1 2018 and has held it in 19 quarters since.
  • Jeff Yass's Mustang Bio position peaked at $863K in Q1 2018.
  • 23 funds tracked by Wall St. Rank held Mustang Bio as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.