Nanobiotix (NBTX) was added to the CAC Mid 60 and SBF 120 indices on Euronext Paris, with the change taking effect after the market close on December 19 2025. The announcement, made on December 15, signals that the company now meets the market‑capitalization, liquidity, and free‑float thresholds required for both mid‑cap and large‑cap French benchmarks.
The CAC Mid 60 tracks 60 mid‑cap French companies, while the SBF 120 aggregates the CAC Large 60 and CAC Mid 60 constituents, representing a broad spectrum of French listed firms. Inclusion requires a minimum market cap of roughly €1.5 billion, a free‑float of at least 20 %, and a minimum daily trading volume. Nanobiotix’s compliance with these criteria reflects its growing scale and market presence.
CEO Laurent Levy said the admission “is an honor that confirms the confidence of the financial markets in our long‑term strategy and the disruptive potential of our nanotherapeutic solutions.” He added that the company will continue to focus on disciplined execution and creating sustainable value for patients, partners, and shareholders as it advances toward key milestones.
Being part of both indices broadens Nanobiotix’s visibility to institutional investors who track these benchmarks, potentially increasing demand from index‑linked funds and improving liquidity. The move also diversifies the company’s investor base and signals market confidence, which can support future capital‑raising efforts and strategic initiatives.
While no immediate market‑reaction data is available, the inclusion is expected to attract passive investors and could lead to a gradual uptick in trading volume as index funds adjust their portfolios. Analysts anticipate that the enhanced exposure will reinforce Nanobiotix’s valuation narrative and support its long‑term growth trajectory.
Overall, the index admission marks a milestone in Nanobiotix’s evolution, underscoring its progress toward becoming a leading player in physics‑based medicine and positioning the company for broader institutional support.
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