Kalshi record volume: $5.33 billion on Saturday and $5.36 billion on Sunday break the October high, with parlays doing most of the work
The two record days landed on one of the heaviest sports weekends of the autumn: a full college football Saturday, an NFL Sunday that included a game in Madrid and Sunday Night Football, plus NBA, NHL and European soccer. For comparison, Kalshi traded about $4.15 billion on Election Day last week, when politics rather than sports drove the book. Covers, citing Aldrin research data, estimates that DraftKings Predictions handled about $744 million over the same weekend, far behind Kalshi but one of the larger figures yet for a sportsbook-run exchange.
What the market is pricing
Volume records describe activity, not outcomes, so the useful prices here are the ones traders were actually placing. As of 13:21 UTC on November 10, the most active sports outcomes on BetG8's live boards looked like this.
| Market, 13:21 UTC Nov 10 | Polymarket | Kalshi |
|---|---|---|
| Buffalo Bills win Super Bowl LXI | 14.5% | 14.5% |
| San Francisco 49ers win Super Bowl LXI | 14.3% | 15.0% |
| Kansas City Chiefs win Super Bowl LXI | 8.5% | 7.5% |
| San Antonio Spurs win the NBA title | 21.5% | 22.5% |
| Fed hikes 25 bp in December | 87.5% | 88.0% |
Prices on futures like these barely move on a single weekend; the volume comes mostly from game-day contracts that settle within hours. The full side-by-side list of shared markets is on BetG8's Kalshi vs Polymarket odds page.
Why combos dominate the numbers
A combo contract bundles several outcomes into one position, for example a team to win plus a total, and pays only if every leg lands. Each combo is recorded at its notional size, so a high share of combos tends to lift headline volume faster than single-outcome trading would. Three quarters of the weekend's volume coming from combos means the record says as much about product design as about new money. It also means Kalshi is competing more directly with sportsbook parlays, which is where traditional operators earn some of their widest margins.
The legal backdrop
The record arrives while the industry argues over the rules. Sportsbook operators are under pressure from Wall Street: three banks downgraded DraftKings this week over the prediction markets bill in Congress, which we covered in our DraftKings downgrade report. Several state regulators still dispute whether sports event contracts belong under federal commodities law at all, and court cases on that question are running in parallel. A bigger share of US sports wagering moving onto federally regulated exchanges raises the stakes of those cases for state tax revenue and for licensed sportsbooks alike.
What to watch next
Next weekend's slate is the first test of whether $5 billion days are becoming normal or were tied to an unusually full calendar. Watch the combo share: if it keeps rising, headline records will grow faster than the number of active traders. Watch also for the next Aldrin and Covers weekly tallies, which give the clearest comparison with DraftKings Predictions and other new entrants, and for any court ruling on state authority over event contracts.
Method and limits
Daily volume figures are as reported by Bitcoin.com News and Covers from Kalshi's public data and Aldrin research; BetG8 has not audited them, and venues count notional volume differently, so cross-venue comparisons are approximate. Market prices are from BetG8's live Super Bowl, NBA and Fed pages, which read the public Kalshi and Polymarket APIs, at 13:21 UTC on November 10, 2026. Prices are not forecasts.
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Frequently asked questions
What is Kalshi's record daily volume?
About $5.36 billion on Sunday, November 8, 2026, a day after $5.33 billion on Saturday, November 7. Both topped the previous record of $5.30 billion from October 24, per Bitcoin.com News.
How much of Kalshi's volume comes from parlays?
Combination contracts made up 75.6% of Saturday's volume and 74.6% of Sunday's, according to the same report.
How does Kalshi compare with DraftKings Predictions?
Covers estimates Kalshi took about 74.5% of a weekend worth more than $14 billion across prediction venues, while DraftKings Predictions handled about $744 million.
Sources
- Bitcoin.com News, Kalshi posts back-to-back $5.3B days, topping its October record
- Covers, Kalshi leads trading volume increase during heavy football weekend
- BetG8, Kalshi vs Polymarket odds, live, read 13:21 UTC, November 10, 2026
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