Founder Directory
Built by Keitoto
Founders3
Known for these resultsRole67%Role is parsed from founder titles in yc.db. Known for 67% of these rows — the rest have no title at all, mostly 2019–2023. Those rows stay in the result and are counted as Unknown, never as No.Bio100%Bio coverage: 100% of these founders have a bio on their YC profile. Every bio-derived facet (ex-company, school, credentials, discipline) is Unknown for the rest.Ex-company33%Ex-company is matched from bios with employment context (ex-, formerly, worked at). 33% of these rows have at least one match.School67%School is matched from bios, case-sensitive for acronyms. 67% of these rows have at least one match.
- Antonin Parrot@antonin_parrotFounder/CTO · River MarketsX26Fintech · San Francisco
- Oscar LevyFounder/CEO · River MarketsX26Fintech · San Francisco
- Salvador RiveroFounder · LevoS21Fintech · Mexico City
FOUNDERROLEBATCHINDUSTRYLOCATIONTEAMX_url
Antonin ParrotRiver MarketsFounder/CTOSpring 2026FintechSan Francisco, United States2https://x.com/antonin_parrotOscar LevyRiver MarketsFounder/CEOSpring 2026FintechSan Francisco, United States2—Salvador RiveroLevoFounderSummer 2021FintechMexico City, Mexico6—
Showing 1–3 of 3 founders
Antonin Parrot
Founder/CTO·River Markets
PRIMARY INFO
RoleFounder/CTO
Team size2
BatchSpring 2026
LocationSan Francisco, United States
Company statusActive
StageEarly
BIO
Co-founder of River Markets, the prime broker for prediction markets. I have a background in engineering and CS, and I've been working as a quant at a high frequency option market making trading shop.
Ex-company, school and discipline below are derived from this bio. Nothing is inferred when the bio is missing.
BACKGROUND
No notable employer or school mentioned in the bio.
Credentialsnone mentioned
DisciplineEngineerKeyword match from the bio text, not a classifier.
TRACK RECORD
First YC company on record
COMPANY CONTEXT
River Markets
Prime brokerage for prediction markets
IndustryFintech
Websiterivermarkets.com
Team size2
LocationSan Francisco, United States
BatchSpring 2026
Co-foundersOscar Levy
