Sports are about half of Polymarket's markets
As of June 2026, sports categories account for 614,458 of the 1,262,964 markets 0xinsider tracks on Polymarket, just under half of everything on the platform. Politics, crypto, and culture share what is left. Polymarket is better known for election markets, but by market count it is a sports venue first.
The money is large too. 0xinsider's pipeline captured 562,186 large trades on Polymarket sports markets carrying $9.75 billion in notional. Those trades price the same games a sportsbook does, but the crowd sets the price and each market resolves in public.
Every number comes from 0xinsider's own ingestion of public Polymarket on-chain activity. The category counts and the leaderboard behind them have live versions on the product. The dollar amounts measure large-trade flow, not total market volume, which is larger.
Esports, soccer, and tennis lead Polymarket's sports markets
Esports leads Polymarket's sports markets with 185,539, followed by soccer at 157,566 and tennis at 81,106. NBA markets number 58,706, with baseball (20,902), college basketball (19,988), basketball (16,187), the NFL (15,190), hockey (11,904), cricket (10,078), and college football (5,966) filling out the rest. A separate 26,697-market 'Sports' bucket holds events that do not map cleanly to one league.
The high counts reflect market structure, not event count. A single soccer match can carry dozens of short-duration markets (match winner, total goals, both teams to score, half-time states), and some tennis series list a market per set and per game. One fixture becomes many tradeable questions, which is why soccer and tennis, sports with continuous in-play structure, sit near the top. Graded esports wallets, ranked by forward-observed taker-fill edge, are at 0xinsider.com/categories/esports.
The Polymarket counts here are its international on-chain venue; Polymarket also runs a separate CFTC-regulated US exchange, Polymarket US, which lists a narrower set of markets.
Every Polymarket trade carries a wallet
Polymarket settles on-chain, so every trade carries a wallet address. 0xinsider attributes the $9.75 billion in tracked sports flow to 20,315 distinct wallets, and each wallet's profile shows its grade and settled P&L. You can see which wallets are consistently profitable on sports, what they hold right now, and how their sports record compares to their politics record.
That is what makes a grade possible. A venue that clears trades through a regulated exchange with no public trader identity can show prices and aggregate flow, but not a trader, a grade, or a P&L, because that information is not public. Any product that claims to show you the skilled traders on such a venue is inventing them. On Polymarket you can study which wallets win and follow specific ones across sports.
What the prices mean next to a sportsbook line
A sportsbook sets a line and takes the other side of the bet. A prediction market lets the crowd set the price and takes a fee on the volume. When billions in large trades move through the crowd-priced venue on the same games a book is pricing, the market price is a second opinion on the line. When the two disagree on Sunday's game, you can see which Polymarket wallets are behind the price.
Graded sports wallets also trade in the open. Every position a wallet takes and its settled P&L are public, so you can study what a well-graded sports wallet does from its record rather than from screenshots.
As of June 2026, sports were roughly half of Polymarket's markets, with $9.75 billion in large-trade flow on them. At that size, the prices are a data source worth reading next to any sportsbook line.
How to verify these numbers
Market counts come from 0xinsider's market table, grouped by platform and provider-derived category, as of June 7, 2026. Sports categories include the major leagues and sports listed above plus the platform 'Sports' umbrella. The leaderboard and category pages on 0xinsider show the current Polymarket versions of these breakdowns, so the exact counts will drift as new markets open and resolve.
The dollar figures measure large-trade flow, not total volume. 0xinsider's large-trade pipeline captures trades at or above a USD notional floor, so $9.75 billion in Polymarket sports flow is the sum of large sports trades it has recorded, not the gross turnover of every sports market. It measures where sized money went. Total platform volume is larger.
Wallet counts apply to Polymarket only. The 20,315 distinct wallets are on-chain addresses behind the tracked Polymarket sports flow. You can pull the underlying data through 0xinsider's datasets, and the per-wallet grades and P&L are visible on each trader's profile and on the leaderboard.
Common questions
What share of prediction markets are sports?
As of June 2026, sports categories make up 614,458 of the 1,262,964 markets 0xinsider tracks on Polymarket (about 49%). Sports is Polymarket's largest market group.
How much money moves through sports prediction markets?
As of June 2026, 0xinsider had tracked $9.75 billion in large-trade flow across 562,186 trades on Polymarket sports markets. This measures large trades at or above a USD notional floor, not total market volume, which is higher.
Can you see who the sharp sports traders are?
On Polymarket, yes. Every trade settles on-chain with a wallet address, so 0xinsider attaches a grade and settled P&L to each wallet. A venue that clears trades with no public trader identity cannot show you who the sharp traders are, and any product claiming to is inventing them.
Which sports are biggest on Polymarket?
By market count: esports (185,539), soccer (157,566), tennis (81,106), and the NBA (58,706) lead, followed by baseball, college basketball, basketball, the NFL, hockey, and cricket. High counts reflect many short-duration markets per event, not raw event volume.
