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Polymarket
Largest crypto-native prediction market, Polygon settlement
liveVenueClobPolygon + QCXPolygongeneralpoliticssports
Total raised
$879.0M
Rounds
8
Founded
2020
HQ
New York, USA
Founders
Shayne Coplan
founder & CEO
NYU dropout; founded at 22, operating entity Blockratize Inc.
Open interest
Open interest
$361.4M
As of
2026-08-22
Source
Polymarket data API
Money still sitting in open positions, as opposed to volume, which is money that changed hands. Basis: USD, as reported by the venue. Market list is the 80 highest-volume open markets, ranked by their open interest — not the whole book.
Daily open interest — 1 day
2026-08-192026-08-19
Polymarket publishes only a current reading — no historical endpoint exists — so this series starts the day we began recording it, and grows one bar per day.
$8.3M
$8.3M
$7.4M
$6.0M
$5.6M
$4.5M
$3.0M
$1.6M
$1.6M
$1.4M
$840K
$394K
$274K
$194K
$105K
$103K
$74K
$60K
$41K
$38K
$36K
$32K
$31K
$29K
$29K
Funding history — 8 rounds
| Date | Round | Amount | Valuation | Investors | |
|---|---|---|---|---|---|
| Feb 2026 | Undisclosed | $600.0M | — | Intercontinental Exchange | Reported |
| Oct 2025 | Strategic | — | $8.00B | ICE (NYSE parent) | Reported |
| Aug 2025 | Strategic | — | — | 1789 Capital | Reported |
| Jan 2025 | Undisclosed | $150.0M | — | Founders Fund, Coinbase Ventures, Dragonfly, Blockchain Capital, Ribbit Capital, 1confirmation, SV Angel, Valor Capital Group, Point72 Ventures, 1789 Capital, Naval Ravikant, Guy Oseary, Gaurav Ahuja | Reported |
| May 2024 | Series B | $45.0M | — | Founders Fund, Dragonfly, Vitalik Buterin, ParaFi Capital, 1confirmation | Reported |
| Jan 2024 | Series A | $25.0M | — | General Catalyst | Reported |
| Jan 2024 | Undisclosed | $55.0M | — | Blockchain Capital, Coinbase Ventures, Dragonfly, ParaFi Capital, 1confirmation, Founders Fund, SV Angel, 1789 Capital, Naval Ravikant, Dylan Field, Mark Pincus, Guy Oseary, Abstract, Anthony Kiedis | Reported |
| Oct 2020 | Seed | $4.0M | — | Polychain Capital, Balaji Srinivasan, Stani Kulechov, ParaFi Capital, 1confirmation, Marc Bhargava, Naval Ravikant, Kain Warwick, Meltem Demirors, Robert Leshner, Calvin Liu, Tarun Chitra, Josh Hannah | Reported |
Backers — 32
Intercontinental Exchange · leadICE (NYSE parent) · lead1789 CapitalFounders FundCoinbase VenturesDragonflyBlockchain CapitalRibbit Capital1confirmationSV AngelValor Capital GroupPoint72 VenturesNaval RavikantGuy OsearyGaurav AhujaVitalik ButerinParaFi CapitalGeneral CatalystDylan FieldMark PincusAbstractAnthony KiedisPolychain CapitalBalaji SrinivasanStani KulechovMarc BhargavaKain WarwickMeltem DemirorsRobert LeshnerCalvin LiuTarun ChitraJosh Hannah
Public-market exposure
Intercontinental ExchangeGenius SportsSportradar GroupGalaxy DigitaleToro GroupCircle Internet Group
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