Shayne Coplan founded Polymarket in 2020, building the first version alone from a New York apartment at age 21. He was a New York University dropout who had bought Ethereum as a teenager, and he wagered that financial markets could forecast real events more honestly than polls or pundits. Five years later that bet made him one of the youngest self-made billionaires in the world.
The path from a solo coding project to a company valued in the billions ran through a federal settlement, an FBI raid, and a regulated return to American users. Smart Bet Insider follows the people and decisions behind the prediction markets it tracks. The story below explains who built Polymarket and how it became what it is.
Shayne Coplan, The Founder
Shayne Coplan was born in 1998 and raised on Manhattan’s Upper West Side, attending public schools in Hell’s Kitchen. He taught himself to code as a teenager and got into cryptocurrency early, buying Ethereum in its 2014 presale when the token cost around thirty cents. That early stake gave him both a grounding in blockchain and the seed money for what came next.
He enrolled at New York University to study computer science and left during his freshman year to work in crypto full time. The decision fit a pattern that defined him, a pull toward systems that price uncertainty over the conventional path through a degree. By his early twenties he had the technical skill and the risk tolerance that Polymarket would soon demand.
From Union Market to Polymarket
Coplan’s first project was not a prediction market at all. He started with a decentralized finance venture called Union Market, then pivoted in early 2020 when the pandemic made the value of good forecasting obvious. Working alone from his Lower East Side apartment, he reworked the idea into a platform where users traded on the likelihood of real events, and Polymarket launched in mid-2020.
The build was fast and unconventional. Coplan put the platform together in roughly three months and launched without seeking the regulatory approval the law required, a shortcut that would cost him later. The first markets let users trade on COVID-19 timelines and US political outcomes using stablecoin on the Polygon network, turning smart-contract complexity into a simple web dashboard that crypto-native users found early.
The 2024 Election Breakthrough
Polymarket spent its first years as a niche crypto product, then the 2024 US presidential election pushed it into the mainstream. Users wagered a reported $3.6 billion on the single question of who would win the presidency, and the market favored Donald Trump while most pollsters still called the race too close to read. The odds proved right, and news outlets began citing Polymarket alongside traditional polls.
That moment crystallized Coplan’s core argument about what his platform measures. A poll asks what share of people support a candidate, while Polymarket prices how likely a candidate is to win, two different questions that produce different numbers. The election made the distinction concrete and gave the platform a credibility that polling had spent that cycle losing.
The Settlement and the FBI Raid
The shortcut from 2020 caught up with the company. In January 2022 the Commodity Futures Trading Commission fined Polymarket $1.4 million for operating an unregistered trading platform, and the company agreed to block US users until it secured proper licensing. Coplan moved certain operations offshore and ran the platform internationally for the next several years.
The pressure intensified after the election. In November 2024, FBI agents raided Coplan’s Manhattan apartment and seized his electronic devices as part of an investigation into whether Polymarket had kept serving Americans in violation of the settlement. The company called the raid political retribution for correctly calling the election, Coplan posted “New phone, who dis?” after losing his device, and in July 2025 the Department of Justice and CFTC dropped the investigations without charges.
The Billion-Dollar Turn
With the legal cloud gone, Coplan moved to bring Polymarket back to American users the legal way. In September 2025 the company acquired a small CFTC-registered exchange and clearinghouse for roughly $112 million, buying the license it needed to reopen domestically. The purchase set up a compliant US return after nearly three years of being barred.
The capital followed fast. In October 2025 the Intercontinental Exchange, parent of the New York Stock Exchange, announced an investment of up to $2 billion in Polymarket, valuing the company around $8 billion.
Coplan’s roughly 11 percent stake translated to a personal net worth near $1 billion, and Bloomberg named him the youngest self-made billionaire in the world at 27. The company once fined and exiled by US regulators was now backed by Wall Street’s biggest exchange operator.
The Story Behind the Platform
Polymarket traces back to a single thesis Coplan has held since his teens, that markets with real money behind them forecast the world more accurately than commentary does. He built the platform on that idea, nearly lost it to a regulatory fight, and rebuilt it into a company that Wall Street now funds. The founder and the argument have stayed constant while everything around them changed.
Smart Bet Insider tracks prediction markets and the people shaping them, from founders to the traders moving the odds. Check the analysis when you want the story behind the numbers a platform like this produces.
Frequently Asked Questions
Who founded Polymarket?
Shayne Coplan founded Polymarket in 2020 and remains its CEO. He built the first version alone from a New York apartment at age 21, after dropping out of New York University and getting into cryptocurrency as a teenager. He is the platform’s sole founder.
How old was Shayne Coplan when he founded Polymarket?
Coplan was 21 when he founded Polymarket in 2020, having been born in 1998. He had already left New York University and spent time working in the crypto space. He built the first version of the platform alone in roughly three months.
How did Shayne Coplan become a billionaire?
Coplan became a billionaire in October 2025 after the Intercontinental Exchange, the parent of the New York Stock Exchange, announced an investment of up to $2 billion in Polymarket at a valuation around $8 billion. His roughly 11 percent stake in the company put his net worth near $1 billion. Bloomberg identified him as the youngest self-made billionaire in the world at 27.
Why did the FBI raid the Polymarket founder’s home?
FBI agents raided Coplan’s Manhattan apartment in November 2024 as part of an investigation into whether Polymarket had continued serving US users in violation of its 2022 CFTC settlement. Agents seized his electronic devices, and the company called the raid political retribution for correctly predicting the election. The Department of Justice and CFTC dropped the investigations in July 2025 without filing charges.
When was Polymarket founded and on what blockchain does it run?
Polymarket was founded in 2020 and runs on Polygon, a network connected to Ethereum, which keeps transaction costs low. Users trade shares in real-world outcomes using the USDC stablecoin, with each share priced between zero and one dollar to reflect the market’s implied probability. The platform has used this structure since launch.