Teahose.
SIGN IN
NEW HERE — WHAT TEAHOSE DOES
We read the entire AI & tech firehose — so you don't have to.
PODPodcastsAll-In, No Priors, Acquired…
NEWNewslettersStratechery, Newcomer…
PAPPapersPhysical AI research
PHProduct Huntdaily launches
VCInvestor ScoutSequoia, a16z, Benchmark…
CLAUDE DISTILLS →
7 reads, 30 sec each — free, 6 AM ET.
+ a live graph of the companies, people & themes underneath.
HOME/PEOPLE/SHAYNE COPLAN
// PERSON

Shayne Coplan

ROLE FOUNDER, POLYMARKETMENTIONS 1LAST SEEN JULY 21, 2026
// BIO

Shayne Coplan is an American entrepreneur and the founder and CEO of Polymarket, a cryptocurrency-based prediction market platform. He founded the company in 2020 after attending New York University, and the platform gained widespread attention for its election prediction markets. Coplan has been involved in a notable rivalry with Tarek Mansour, CEO of the competing prediction market Kalshi, which has included regulatory disputes and personal tensions between the two executives.

// RECENT MENTIONS
// SIGNALS
1 SIGNAL
01
mention·StrictlyVC·JULY 21, 2026

Kalshi CEO Tarek Mansour and Polymarket founder Shayne Coplan have turned their prediction-market rivalry into a bitter personal feud involving regulatory complaints, deal interference, legal threats, and public trolling as their companies battle over a sector that logged more than $150 billion in first-half trades.

AI-extracted from podcast / newsletter / paper summaries. May contain errors.