Fundraising Fox

Ethan Pronev

Founder

Founder at Approxima

New York, New York, United States

FoundedApproxima Β· YC

About

Ethan Pronev worked on trading systems at Jane Street and Citadel Securities, and is a computer science graduate from the University of Waterloo. He is co-founder of Approxima.

LinkedIn β†—X / Twitter β†—
Latest on 𝕏

Ethan Pronev @ethanpronev

got a mini heart attack when I realized I forgot to cancel my linkedin premium trial lol (was able to get it refunded thankfully) https://t.co/i0HWXGVWth

Mar 1, 2026 Β· β™₯ 1

Ethan Pronev @ethanpronev

πŸ™ https://t.co/WUbEivGQ8u

Mar 1, 2026 Β· β™₯ 2

Ethan Pronev @ethanpronev

https://t.co/e529yMGDgB

Jan 26, 2026 Β· β™₯ 1

Founder at ApproximaYC W26

Intro paths

YC

Ethan went through Y Combinator (Winter 2026) β€” any YC alum in your network can reach them through the YC community.

GP

Their group partner at YC was Diana Hu, General Partner at Y Combinator β€” the partner who ran Approxima's batch and knows the company first-hand. YC profile β†—

β†’

In turn, Ethan can intro founders to Approxima's investors below.

Approxima's investors Β· 1

Y Combinator

Co-founders at Approxima

ASAshish Selvaraj
Ashish SelvarajFounder

Experience

  1. Approxima (YC W26)Foundercurrent2025 β€” presentSan Francisco, CA
  2. Citadel SecuritiesSoftware Engineer Intern2024New York, New York, United States
  3. Jane StreetSoftware Engineer Intern2024New York, New York, United States
  4. Squarepoint CapitalSoftware Engineer Intern2022Montreal, Quebec, Canada
  5. BitGoSoftware Engineer Intern2022Palo Alto, California, United States

Education

  1. University of WaterlooBachelor's degree, Computer Science (Co-op)2020 β€” 2025
  2. International BaccalaureateErindale Secondary School2016 β€” 2020

Same school

Also attended University of Waterloo206

Chamath PalihapitiyaFounder & CEO of Social CapitalKarim GillaniGeneral Partner at Luge CapitalRohan MongaInvestment Associate at Luge CapitalAndrew MiklasGeneral Partner at Y CombinatorAniTalent Team at Hummingbird VenturesAlex KolicichInvestment Team at 8VC

+ 200 more

Also attended International Baccalaureate52

AlptugInvestment Team at Hummingbird VenturesDanny EdmanInvestor at Alpha PartnersHari GopalDirector of Corporate Insights at Tech Square VenturesEdward YangSenior Associate at Prelude VenturesArmita HosseiniVenture Fellow at Leonis CapitalSara JawadInvestor at Industrifonden

+ 46 more

Shared employers

Also worked at Citadel Securities10

Alfred LinPartner at Sequoia CapitalKonstantine BuhlerInvestor at Sequoia CapitalAnthony DeCamilloPartner at Meritech Capital PartnersVidur GuptaVice President at FrontenacEric FultonVenture Partner at Two Bear CapitalLoren SiebertAngel at Paradigm

+ 4 more

Also worked at Jane Street15

Leigh Marie BraswellPartner at KPCBIvory TangInvestor at ChemistryChang XuPartner at Basis Set VenturesAlexander GuInvestor at E14 FundChris ClarkInvestor at FalconX Credit / Pareto VaultMina NguyenInvestor at FalconX Credit / Pareto Vault

+ 9 more

Also worked at Squarepoint Capital3

Valentin MihovCEO at EnfluxAndrew BradyInvestor at Anza PartnersTahmid JamalFounder at Yondu

Also worked at BitGo9

Anne GheriniChief Marketing Officer at Sierra VenturesBlair GarrouCo-founder & General Partner at Mercury FundMatthew CowanGeneral Partner at Next47Joseph W. BruzzesiGeneral Partner at RW3 VenturesBen DapkiewiczInvestor at FalconX Credit / Pareto VaultBrian BrooksInvestor at FalconX Credit / Pareto Vault

+ 3 more