Nanobiotix NBTX Institutional Ownership

Updated Oct 10, 2026

Nanobiotix S.A. (NASDAQ:NBTX) was held by 19 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

• Collectively, these holders controlled 12.11% of Nanobiotix's outstanding shares in Q2 2026, up from 11.77% in Q1 2026.
• Total shares held in Nanobiotix rose 1.65% from Q1 2026, while the number of holders rose 111.11% from Q2 2025.
• Of the 19 holders of NBTX in Q2 2026, 13 added to their positions, 2 reduced their stakes and 4 left their positions unchanged.
• Altogether, institutional holders owned 5.79Mn NBTX shares at the end of Q2 2026, up 94.06K from the prior quarter and up 152.67K from a year earlier.
• Johnson & Johnson held the largest position in NBTX at 5.62Mn shares as of June 30, 2026, or 11.76% of shares outstanding.
• The largest position increases in NBTX for Q2 2026 were by Morgan Stanley (+13.52K shares), Marshall Wace, LLP (+805 shares), BNP Paribas Financial Markets (+485 shares), Royal Bank of Canada (+364 shares) and GAMMA Investing LLC (+157 shares).
• The biggest cuts to NBTX positions during Q2 2026 came from UBS Group AG (-2.98K shares) and Rhumbline Advisers (-779 shares).
• Per Business Quant, the top 10 investors in NBTX for the quarter ended June 30, 2026 were Johnson & Johnson (5.62Mn shares), Morgan Stanley (49.79K shares), Jane Street Group, LLC (32.18K shares), HRT Financial LP (27.33K shares), XTX Topco Ltd (15.86K shares), Optiver Holding B.V. (13.63K shares), Marshall Wace, LLP (10.04K shares), Citadel Advisors LLC (6.04K shares), BNP Paribas Financial Markets (4.04K shares) and UBS Group AG (2.58K shares).