Antonin Parrot

Co-Founder @ River Markets (YC P26) | Prev quant at option HFT

Co-founder

River Markets· Spring 2026 San Francisco Bay Area

in LinkedIn 𝕏 @antonin_parrot

2026Co-founder· River Markets

Founder · since 2026

Company

River Markets

Role

Co-Founder

current

Stage

—

no public source

Raised

—

no public source

Based

San Francisco, California, United States

current

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

River Markets

Prime brokerage for prediction markets

Spring 2026

Experience

Career

River Markets
Co-founder
Co-Founder · San Francisco, California, United States · 2026 – Present
2026
Valkyrie Trading
Quantitative Researcher · New York City Metropolitan Area · 2025 – 2026
2025
Valkyrie Trading
Junior Quantitative Researcher · Chicago, Illinois, United States · 2023 – 2025
2023
Morgan Stanley
Quantitative Finance Fall Associate · New York City Metropolitan Area · 2022 – 2023
2022
QuantCube Technology
Data Scientist Junior - Quantitative analyst · 2021 – 2022
2021
Gendarmerie Nationale
Policeman reservist (Sergeant) · 2021 – 2022
2021
ALVEUS
Teacher · Ville de Paris, Île-de-France, France · 2020 – 2021
2020
Bureau des èleves de l'école des Ponts ParisTech
Head of partnerships and corporate relations · 2020 – 2021
2020
ARGEDIS
Cashier · Ville de Paris, Île-de-France, France · 2020
2020
efiester
Ambassadeur · 2019 – 2020
2019
TF1 le Groupe
Actor · 2015
2015

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.