MUSTANG BIO, INC. (MBIO) — Institutional Holders, Q2 2026
23 institutional investment managers reported a MBIO position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $378.3K. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
MBIO in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Kestra Advisory ServicesAdded · +20,949 sh+$14.7K
- XTX Topco LtdNew · +14,648 sh+$10.3K
- Virtu FinancialNew · +14,356 sh+$10.1K
- TWO SIGMA SECURITIESNew · +13,742 sh+$9.6K
- SUSQUEHANNA INTERNATIONAL GROUP, LLPNew · +13,664 sh+$9.6K
Biggest sellers
- GEODE CAPITAL MANAGEMENTTrimmed · -50,550 sh-$35.5K
- TWO SIGMA INVESTMENTSSold out · -16,754 sh-$11.8K
- MAI Capital ManagementSold out · -3 sh-$2.00
- CITIGROUPSold out · -1 sh-$1.00
MBIO 13F holders ranked 1–23 of 23
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | Kestra Advisory Services#1 · 196,991 sh | 196,991 | $138.3K | <0.01% | +11.9% |
| 2 | BlackRock#2 · 84,745 sh | 84,745 | $59.5K | 0.00% | 0.0% |
| 3 | CITADEL ADVISORS#3 · 59,459 sh | 59,459 | $41.7K | 0.00% | +11.8% |
| 4 | GEODE CAPITAL MANAGEMENT#4 · 42,240 sh | 42,240 | $29.7K | 0.00% | -54.5% |
| 5 | CFO4Life Group#5 · 33,510 sh | 33,510 | $23.5K | <0.01% | +63.8% |
| 6 | VANGUARD FIDUCIARY#6 · 32,120 sh | 32,120 | $22.5K | 0.00% | 0.0% |
| 7 | VANGUARD CAPITAL MANAGEMENT#7 · 25,704 sh | 25,704 | $18.0K | 0.00% | 0.0% |
| 8 | XTX Topco Ltd#8 · 14,648 sh | 14,648 | $10.3K | <0.01% | New |
| 9 | Virtu Financial#9 · 14,356 sh | 14,356 | $10.0K | <0.01% | New |
| 10 | TWO SIGMA SECURITIES#10 · 13,742 sh | 13,742 | $9.6K | <0.01% | New |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#11 · 13,664 sh | 13,664 | $9.6K | 0.00% | New |
| 12 | UBS Group AG#12 · 4,155 sh | 4,155 | $2.9K | 0.00% | +13.6% |
| 13 | Tower Research Capital (TRC)#13 · 1,895 sh | 1,895 | $1.3K | 0.00% | 0.0% |
| 14 | BARCLAYS PLC#14 · 1,121 sh | 1,121 | $787.00 | 0.00% | New |
| 15 | SBI Securities , Ltd.#15 · 509 sh | 509 | $357.00 | — | 0.0% |
| 16 | MORGAN STANLEY#16 · 118 sh | 118 | $83.00 | 0.00% | 0.0% |
| 17 | CULLEN/FROST BANKERS#17 · 13 sh | 13 | $9.00 | — | 0.0% |
| 18 | BNP PARIBAS FINANCIAL MARKETS#18 · 6 sh | 6 | $4.00 | 0.00% | 0.0% |
| 19 | NBC SECURITIES#19 · 3 sh | 3 | $2.00 | — | 0.0% |
| 20 | OSAIC#20 · 2 sh | 2 | $1.00 | 0.00% | 0.0% |
| 21 | JPMORGAN CHASE#21 · 2 sh | 2 | $1.00 | 0.00% | 0.0% |
| 22 | DANSKE BANK A/S#22 · 2 sh | 2 | $1.00 | 0.00% | 0.0% |
| 23 | GROUP ONE TRADING, L.P.#23 · 1 sh | 1 | $1.00 | 0.00% | 0.0% |
Funds that sold out of MBIO in Q2 2026 (3)
Held MBIO at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| TWO SIGMA INVESTMENTS16,754 sh | 16,754 | $12.2K |
| MAI Capital Management3 sh | 3 | $3.00 |
| CITIGROUP1 sh | 1 | $1.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.