Kalshi

CFTC DCM
#1 of 53 by 24h volume · 75.3% share
24h volume$409.96Mcash, taker side
30d volume$10.76B
Open interest$848.43Mlive exposure
Markets99,576Off Chain

Volume history

Monthly volumeCumulative
$1K$10K$100K$1M$10M$100M$1.00B$10.00B$0$65.55BJun 2021Oct 2022Feb 2024Jun 2025
peak $11.69B · last period still open

Largest markets

share of venue volume
  1. 1KXMVECROSSCATEGORY40.8%
  2. 2Bitcoin price up down17.7%
  3. 3Bitcoin price Above/below5.1%
  4. 4Professional Baseball Game3.3%
  5. 5Challenger ATP 2.6%
  6. 6ITF Men's Match2.4%
  7. 7ITF Women's Match2.1%
  8. 8Professional Football Game1.8%
  9. 9ATP Tennis Match1.7%
  10. 10WTA Tennis Match1.7%

What this venue actually trades

Sports 29.2% Crypto 25.3% Everything else 45.5%

Where the volume sits

Two different questions. Flow is what changed hands; stock is what is still open. They disagree, and the gap is the point.

Traded flow · share of volume in the window

Exotics41.6%
Sports29.2%
Crypto25.3%
Commodities1.8%
Other0.8%
Elections0.3%
Climate and Weather0.3%
Financials0.1%

Open stock · lifetime volume of markets still live

Elections37.2%
Sports30.2%
Politics10.4%
Crypto6.1%
Economics5.5%
Science And Technology4.1%
Entertainment2.8%
Financials2.3%

Long-dated markets accumulate volume and stay open; short ones settle and leave. So the open column over-weights anything slow to resolve, and is not a substitute for the traded column.

Where these numbers come from

Unit
$1-face contract count, printed with a $ sign
Sides counted
one per matched trade
Source
api.elections.kalshi.com
Refresh
15 min

All open events, crawled by event rather than market · the market feed is ~99% auto-generated multivariate parlays with no volume and no category. 24h volume additionally spans markets settled in the last 48h, deduped by ticker, because short-duration series settle 96 times a day and an open-only figure lands ~6.5x low.

How the unit was established

Kalshi's API reference defines volume_fp as "the market volume in contracts" and notional_value_dollars as $1.00 per contract. On KXNFLGAME-26AUG15LARKC-KC, volume_fp = 8,753.35 matched the summed contract count over all 290 trades exactly, while cash actually exchanged was $4,998.78 · 57%. Reconciling against the trade feed, where each row is one buyer/seller match, reproduces volume_fp exactly, so a match is counted once, not twice. Round trips (open then close) do add twice, because they are two matches.

Full methodology →