Usually far more than a typical bet. A normal October window traded about 2.9 million contracts (each pays $1 if you are right), and when we watched the live market for about two hours, around 5,500 contracts were usually waiting at the best price. Kalshi's rules flag positions above $25,000 per market for review. Two catches: a bigger bet does not improve your odds, and prices move fast in the last few minutes.
Kalshi publishes how many contracts change hands in every Bitcoin window. It has grown fast this year:
| Month (2026) | A typical window traded |
|---|---|
| January (from the 10th) | 16,000 contracts |
| February | 90,000 contracts |
| March | 169,000 contracts |
| April | 221,000 contracts |
| May | 345,000 contracts |
| June | 803,000 contracts |
| July | 1.4 million contracts |
| August | 1.8 million contracts |
| September | 2.4 million contracts |
| October (to the 21st) | 2.9 million contracts |
A contract is not a dollar. It pays $1 if you are right, so it costs whatever the price is: a 95-cent contract costs 95 cents, a 30-cent one costs 30 cents. Even so, millions of contracts a window means a $50 or $500 bet is a drop in the bucket.
In October, about 40% of each window's trading happened in its final three minutes, and the very last minute alone carried about 1 in 6 of the contracts. The middle of the window is the quietest.
Late in the window the outcome is usually close to decided, so most of that late trading is at extreme prices: about 9 in 10 of the contracts traded in the last three minutes went at 90 cents or more, or 10 cents or less. At 95 cents you win 5 cents and can lose 95, so one loss wipes out about 19 wins. Our 99-cent study shows how often those near-certain bets still lose.
By time of day, windows ending between 10 and 11 PM ET were the busiest and those ending between 6 and 7 AM ET the quietest (see the best time of day).
Volume tells you what already traded. What matters for your bet is what is on offer right now. On the evening of October 22, 2026 we checked Kalshi's live Bitcoin market once a minute for about two hours (106 looks):
| When we looked | Gap between buy and sell price | Contracts at the best price | Within 3 cents of it |
|---|---|---|---|
| Early in the window (10 to 15 minutes left) | 1 cent | 6,800 | 23,000 |
| 6 to 10 minutes left | 1 cent | 5,900 | 25,000 |
| 3 to 6 minutes left | 1 cent | 5,100 | 27,000 |
| Last 3 minutes | 1 cent | 2,600 | 13,000 |
| All looks | 1 cent | 5,500 | 24,000 |
So on an ordinary evening several thousand contracts sat at the best price, and tens of thousands within a few cents of it. The gap between the buy and sell price was usually about 1 cent. The price on your screen can still change in the second it takes your order to arrive.
Kalshi's terms for its crypto markets set a "position accountability level" of $25,000 per market, per member (checked October 22, 2026). That is the point where Kalshi can review a position, not a promise that any size fills at one price. Kalshi can change its terms, so check the rules linked from the market itself.
Prices on these markets can also move in tenths of a cent (Kalshi's minimum step is $0.001), so a "99 cent" price can be anything from 99.0 to 99.9 cents.
Kalshi charges a fee when you buy at the listed price, and it rounds each order up to the next cent. That rounding hits small bets hardest. At 50 cents, one contract pays a 2-cent fee, while a 100-contract bet pays 1.75 cents per contract. At 95 cents, one contract pays 1 cent and a 100-contract bet pays about a third of a cent each. Our free fee calculator works out any size.
A bigger bet does not change the odds, though. It just makes every loss bigger.
Kalshi's terms for its crypto markets set a position accountability level of $25,000 per market, per member (checked October 22, 2026): the point where Kalshi can review a position, not a promise that any size fills at one price. Check the rules linked from the market, because terms can change.
A typical October 2026 window traded about 2.9 million contracts, up from about 16,000 in January. Each contract pays $1 if it is right and costs whatever its price is, so contracts are not dollars.
Often a fairly big one. In about two hours of checking Kalshi's live market on October 22, 2026, about 5,500 contracts were usually waiting at the best price and about 24,000 within 3 cents of it. It varies by hour and day, and prices can change in the second before your order arrives.
In the last three minutes of each window, which carried about 40% of the trading in October 2026, mostly at prices of 90 cents or more or 10 cents or less. By time of day, windows ending between 10 and 11 PM ET were busiest.
Per contract, a little. Kalshi rounds each order's fee up to the next cent, so at 50 cents one contract pays a 2-cent fee and a 100-contract bet pays 1.75 cents per contract. A bigger bet does not change your odds; it only makes each loss bigger.
Contract counts and settlement results come from Kalshi's published records for every Bitcoin 15-minute window from January 10 to October 21, 2026. The minute-by-minute pattern uses Kalshi's public price history from March 24. The live check read Kalshi's public order book once a minute on October 22, 2026. Every number on this page is in a small spreadsheet you can download. Trading volume and resting orders are not fills, and one evening is not every evening.
Related: how these markets work · is Down due after a streak? · are they rigged? · monthly report
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Every signal in our BTC 15-minute feed goes into a public results log and a downloadable CSV, graded against Kalshi's official result, losses included, with nothing pulled. The same record is available as JSON from our read-only API.
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These are 15-minute binary prediction-market contracts. Any single window can lose 100% of your stake. They settle on a 60-second index average, not on the exchange chart you may be watching. At high prices a loss costs many times what a win pays, and Kalshi's fee raises the win rate you need above the price. Nothing on this page is financial, investment, or betting advice.
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