Current Assessment
Rosso's fortune is anchored in OTB Group, the private fashion group he founded after building Diesel. OTB owns or controls Diesel, Maison Margiela, Marni, Jil Sander, Viktor&Rolf, Staff International and Brave Kid, and has exposure to Amiri. OTB's filings show a large private group, while recent trade reporting shows it remained profitable in 2025 despite a difficult luxury market. Public billionaire-list estimates place Rosso around $4.5 billion, which is broadly consistent with OTB's scale but not precise enough to treat as a hard valuation.
Key caveats
- OTB is private, and Rosso's exact personal ownership percentage is not disclosed in the reviewed public sources.
- Company revenue and EBITDA are not personal net worth; they are only inputs for valuing his likely equity.
- Red Circle, hospitality, wine and other assets are confirmed but not valued separately here.
Evidence gaps
- Direct shareholder filings for OTB and Rosso holding companies.
- Direct Forbes profile access or another licensed wealth database.
- Valuations for Red Circle Investments and hospitality real estate.
