Self-disclosed Copa BTG Trader 2025 participant via Instagram. A separate Brazilian trader named "Estefano dos Santos" gives interviews about day-trading culture in the Northeast (Correio do Ceará) — possible but unverified same person. CNPJ records under similar names point to unrelated entities and should not be cross-linked without direct confirmation. City, day-job, instrument focus, Copa placement — all unknown. Profile published as a placeholder so the row exists in admin; outreach via Instagram DM is the cleanest path to fill in the bio.