KXNBASERIES: Kalshi NBA Series Winner markets in numbers
In the public Becker Kalshi dataset, the KXNBASERIES series (“NBA Series Winner”, Kalshi category Sports) had 24 markets in 12 events created Apr 17, 2025 to May 4, 2025, with 109,231,391 contracts traded; 50.0% of 24 settled markets resolved YES.
Historical snapshot · source: Becker Kalshi dataset and Kalshi public API · page updated · these numbers as JSON
NBA playoff series-winner markets, one market per team per series, settled on the governing league's result and ESPN.
Key numbers
| Measure | Value |
|---|---|
| Markets | 24 |
| Events | 12 |
| Contracts traded | 109,231,391 |
| Markets never traded | 0 (0.0%) |
| Settled markets (yes or no) | 24 |
| Resolved YES | 12 (50.0% of settled) |
| Resolved NO | 12 (50.0% of settled) |
| First market created | Apr 17, 2025 |
| Last market created | May 4, 2025 |
Kalshi title: NBA Series Winner · frequency: custom · settlement sources listed by Kalshi: the Governing League, ESPN.
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Markets by month created
| Month | Markets | Contracts traded | Never traded | Settled | Resolved YES |
|---|---|---|---|---|---|
| Apr 2025 | 16 | 44,519,913 | 0.0% | 16 | 8 |
| May 2025 | 8 | 64,711,478 | 0.0% | 8 | 4 |
Trades by month
From the dataset’s trades files, matched to this series by market ticker. Contracts = sum of trade count.
| Month | Trades | Contracts |
|---|---|---|
| Apr 2025 | 58,870 | 27,161,477 |
| May 2025 | 141,825 | 82,061,318 |
Highest-volume events
| Event ticker | Markets | Contracts traded |
|---|---|---|
| KXNBASERIES-25DENOKC | 2 | 25,118,187 |
| KXNBASERIES-25NYKBOS | 2 | 18,271,903 |
| KXNBASERIES-25GSWHOU | 2 | 17,006,493 |
| KXNBASERIES-25INDCLE | 2 | 11,561,280 |
| KXNBASERIES-25GSWMIN | 2 | 9,760,108 |
Why YES shares are often low or near half: ladders and brackets list many mutually exclusive outcomes per event and only one resolves YES, while game markets come in pairs with one winner. The share reflects how markets are structured, not a forecast or a trading rule.
More: all Sports markets · KXNFLGAME · KXNCAAFGAME · KXNBAGAME · KXMLBGAME · KXATPMATCH · KXMARMAD
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Odds to probability calculator · State of Kalshi · All Kalshi data pages · Kalshi bot guide
Method
- Series = the text before the first hyphen of
event_ticker(same rule as State of Kalshi). - Category = the label Kalshi's public API gives that series today (fetched Oct 17, 2026), applied to every market in the series, including older markets. Labels may differ from what Kalshi showed when a market was listed.
- Contracts = the sum of the
volumefield in the markets files. It counts contracts, not dollars. - Never traded = markets with
volumeof zero. Settled = markets whoseresultis yes or no. - Trades = rows in the trades files whose ticker belongs to this series, grouped by trade month.
- Counts only. No prices are used, and nothing here is a forecast, a trading rule or financial advice.
Source
Market data: Becker Kalshi dataset (Jon Becker, prediction-market-analysis), data dump downloaded Jul 30, 2026, covering markets created Jun 30, 2021 to Nov 23, 2025. Category labels: Kalshi public API (GET /trade-api/v2/series). Computed with DuckDB over all markets files. This is a historical snapshot, not live data. Dataset snapshot date: Oct 17, 2026.