If you're researching Polymarket before using it, here's the clear picture: Polymarket is the world's largest prediction market by volume, founded in 2020 by Shayne Coplan, where people trade on the probability of real-world events. It's a named, venture-backed company that settles its markets transparently on the blockchain - not an anonymous app or a betting shop. This guide covers what it is, who's behind it, how it's structured, and how it actually works.

By the Polymarkets.co.il editorial team. Last reviewed: June 2026. Informational only.

The short version

  • What: the largest prediction market by volume - trade event outcomes as $0-$1 probability shares.
  • Who: founded 2020 by Shayne Coplan (CEO); a named, founder-led, venture-backed company.
  • Structure: private company - no public "Polymarket stock," no IPO.
  • How: runs on Polygon, trades in USDC, resolves via the decentralized UMA oracle.

What Polymarket is

Polymarket is a prediction market: a platform where you buy and sell shares in the outcome of a future event - an election, a Fed decision, a sports result, a crypto milestone. Each share pays $1 if its outcome happens and $0 if it doesn't, so its live price (between $0 and $1) reads directly as the market's implied probability. By volume, it is the largest prediction market in the world, and during major events its busiest markets trade enormous sums.

What it is not: it isn't a sportsbook (it doesn't set odds or take the other side of your bet), and it isn't a stock exchange (you can't buy company shares there). It's an information market.

Who's behind it

Polymarket was founded in 2020 by Shayne Coplan, who serves as its CEO. The idea was straightforward: let people put real stakes behind their forecasts and turn collective prediction into a live, tradable price. It's a named, founder-led company with a real team - the opposite of the anonymous operations you should be wary of. Over the years it has raised funding from prominent venture investors, which is part of why it has the engineering and liquidity to run at the scale it does.

Ownership: is it a public company?

No. Polymarket is a private company. It is not listed on any stock exchange, there is no publicly traded "Polymarket stock" or ticker, and there has been no IPO as of 2026. Ownership sits with its founder, team and venture backers. If you ever see something advertising "Polymarket shares," a "Polymarket IPO allocation," or a "token presale," treat it as a scam - we cover this in the Polymarket Stocks guide.

How it actually works

Three pieces make Polymarket different from a normal betting site:

  • On-chain. It runs on the Polygon blockchain, so every market, trade and payout is recorded publicly and can be audited by anyone.
  • Non-custodial, in USDC. You trade in USDC (a dollar-pegged stablecoin) held in a wallet you control - Polymarket doesn't hold a balance it could freeze.
  • Decentralized resolution. Outcomes are settled by the UMA optimistic oracle, not by a Polymarket employee: an outcome is proposed with a bond, there's a challenge window, and disputes go to a token-holder vote.

How Polymarket makes money

Polymarket is venture-backed and earns through trading fees on certain market tiers. Historically its busiest political markets have been fee-free, while sports and some other categories carry a fee tier (and makers who provide liquidity can earn rebates). Crucially, Polymarket does not profit by taking the other side of your trades the way a bookmaker does - it's a venue where users trade peer-to-peer, with the oracle, not the house, deciding outcomes.

Is it trustworthy?

Polymarket is a real, established, named company with transparent on-chain settlement - which is why "is it legit" has a clear answer. For the full breakdown of safety, custody and the real risks, see Is Polymarket legit & safe?. Availability and legality depend on your jurisdiction, so check your local rules.

Want to try it?

Ready to look around? Here's the official Polymarket link → (affiliate link - free to use, doesn't change your fees or odds).

Frequently asked questions

What is Polymarket?
Polymarket is the world's largest prediction market by trading volume - a platform where you trade on the outcomes of real-world events as shares priced between $0 and $1 that reflect the crowd's implied probability. It isn't a sportsbook or a stock exchange; it's an information market settled transparently on the Polygon blockchain via the UMA oracle.
Who founded Polymarket and who is the CEO?
Polymarket was founded in 2020 by Shayne Coplan, who is its CEO. He started the company to let people trade on the probability of future events. It is a named, founder-led company, not an anonymous operation.
Is Polymarket a real company?
Yes. Polymarket has operated since 2020, settled billions in volume, and raised funding from prominent venture investors. Its markets, trades and payouts are recorded on-chain where anyone can verify them, so its activity is publicly auditable rather than taken on trust.
Who owns Polymarket - is it publicly traded?
Polymarket is a private company; it is not publicly traded, there is no 'Polymarket stock' or ticker, and no IPO as of 2026. Ownership sits with its founder, team and venture backers. Anyone advertising 'Polymarket shares' should be treated as a scam.
When was Polymarket founded?
Polymarket launched in 2020 and grew rapidly through high-profile election and current-events markets. It is now the largest prediction market by volume, with record activity during major events.
How does Polymarket make money?
Polymarket is venture-backed and earns through trading fees on certain market tiers (its busiest political markets have historically been fee-free; sports and some others carry a fee tier). It does not take the other side of your trades like a bookmaker - users trade peer-to-peer, settled by the decentralized UMA oracle.
What blockchain does Polymarket run on, and how are markets settled?
Polymarket runs on Polygon and uses USDC for trading and settlement. Markets resolve through the UMA optimistic oracle: an outcome is proposed with a bond, there's a challenge window, and disputes escalate to a token-holder vote - so settlement is transparent and not decided by Polymarket itself.

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