Kalshi Health markets in numbers
In the public Becker Kalshi dataset (markets created Jun 2021 to Nov 2025), Kalshi's Health category had 632 markets across 55 series, with 8.2M contracts traded; 1.3% of markets never traded and 49.3% of settled markets resolved YES.
Historical snapshot · source: Becker Kalshi dataset and Kalshi public API · page updated · these numbers as JSON
Markets on public-health figures such as case counts and on health policy outcomes.
Key numbers
| Measure | Value |
|---|---|
| Series | 55 |
| Markets | 632 |
| Events | 496 |
| Contracts traded | 8,224,628 |
| Markets never traded | 8 (1.3%) |
| Settled markets (yes or no) | 578 |
| Resolved YES | 285 (49.3% of settled) |
| Resolved NO | 293 (50.7% of settled) |
| First market created | Jul 7, 2021 |
| Last market created | Aug 4, 2025 |
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By year the market was created
| Year | Markets | Contracts traded | Never traded | Settled |
|---|---|---|---|---|
| 2021 | 210 | 3,613,737 | 0.5% | 210 |
| 2022 | 330 | 3,033,220 | 0.9% | 330 |
| 2023 | 17 | 119,898 | 0.0% | 17 |
| 2024 | 35 | 1,266,756 | 0.0% | 19 |
| 2025 | 40 | 191,017 | 10.0% | 2 |
Highest-volume series in Health
| Series | Kalshi title | Markets | Contracts traded | Never traded |
|---|---|---|---|---|
| CASEM | COVID daily case max | 13 | 1,030,488 | 0.0% |
| CASED | COVID daily cases | 262 | 993,985 | 0.4% |
| VAROMIC | Omicron share | 16 | 754,158 | 0.0% |
| CASE7D | New COVID-19 case average | 25 | 731,886 | 0.0% |
| VAXX | COVID vaccinations | 65 | 655,896 | 3.1% |
| CASESURGE | New COVID-19 wave | 2 | 590,180 | 0.0% |
| H5N1CASES | H5N1 cases | 5 | 439,780 | 0.0% |
| CASE7DA | Return to March 2020 COVID level | 1 | 405,434 | 0.0% |
| CASEW | New COVID-19 cases this week | 55 | 369,496 | 0.0% |
| KXCOVVC | COVID new variant of concern reported | 1 | 247,190 | 0.0% |
Compare categories: volume by year · share never traded · YES share by category
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.
Build with this data
- Prediction market analysis framework and dataset
- Kalshi new-market scanner with Telegram alerts
- Kalshi MCP server
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. - 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.