The French Financial Markets Authority (AMF) published its response to the European Commission’s consultation on the Savings and Investment Union, calling for a more integrated EU capital markets supervision model with a significantly enhanced role for the European Securities and Markets Authority (ESMA). The AMF frames supervisory fragmentation as a key obstacle to deeper market integration, citing divergent application of rules, supervisory weaknesses, added costs for firms, and uneven protection for investors and savers. A central proposal is for ESMA to ensure greater supervisory convergence and to take direct supervision of large cross-border entities, including pan-European market infrastructures, crypto-asset service providers operating at global scale, and large asset management groups. Proportionality would be preserved by keeping smaller, primarily domestic entities under national supervision via an ESMA-organised delegation model described as indirect supervision. The AMF also references a recent joint position paper with Austria’s Financial Market Authority (FMA) and Italy’s Companies and Exchange Commission (CONSOB) urging urgent ESMA supervision of major crypto-asset service providers, aligned with ESMA’s 2024 report “Building more effective and attractive capital markets in the EU”. To support this shift, the AMF proposes changes to ESMA’s governance, including a council of supervisory authorities focused on regulatory coherence, comprising the 27 heads of national competent authorities, alongside a smaller executive committee of independent qualified members responsible for operational supervisory decisions.