Mustang Bio MBIO Institutional Ownership

Updated Oct 5, 2026

Mustang Bio, Inc. (NASDAQ:MBIO) was reported as a holding by 23 institutional investors in 13F filings for the quarter ended June 30, 2026.

• These investors held 8.01% of outstanding shares in Q2 2026, up from 7.55% the quarter before.
• Total shares held in Mustang Bio rose 6.10% versus Q1 2026, while the number of holders rose 53.33% versus Q2 2025.
• Of the 23 holders of MBIO in Q2 2026, 9 added to their positions, 1 reduced its stake and 13 left their positions unchanged.
• Combined, institutional investors held 539.01K shares of MBIO as of Q2 2026, up 30.97K from the prior quarter and up 493.06K from a year earlier.
• As of June 30, 2026, the biggest holder of Mustang Bio was Kestra Advisory Services, LLC with 196.99K shares, or 2.93% of shares outstanding.
• Among existing holders, the largest additions to Mustang Bio in Q2 2026 came from Kestra Advisory Services, LLC (+20.95K shares), CFO4Life Group, LLC (+13.05K shares), Citadel Advisors LLC (+6.26K shares) and UBS Group AG (+496 shares).
• Among holders that kept a position in Mustang Bio, the largest reduction in Q2 2026 came from Geode Capital Management, LLC (-50.55K shares).
• Per Business Quant, the top 10 investors in MBIO for the quarter ended June 30, 2026 were Kestra Advisory Services, LLC (196.99K shares), BlackRock, Inc. (84.75K shares), Citadel Advisors LLC (59.46K shares), Geode Capital Management, LLC (42.24K shares), CFO4Life Group, LLC (33.51K shares), Vanguard Fiduciary Trust Co (32.12K shares), Vanguard Capital Management LLC (25.7K shares), XTX Topco Ltd (14.65K shares), Virtu Financial LLC (14.36K shares) and Two Sigma Securities, LLC (13.74K shares).