How to trade the 2026 World Series and MLB playoffs on prediction markets
Playoff games and the champion, traded on exchanges. Dates, markets and tips.
Short answer: The MLB postseason began on September 29, and the 2026 World Series starts Friday, October 23, with a possible Game 7 on Saturday, October 31 (MLB). On prediction markets like Kalshi and ProphetX, you can trade each game and the series winner by buying "Yes" on the team you think is underpriced.
Key dates (2026)
| Round | Starts |
|---|---|
| Wild Card Series | September 29 |
| Division Series | October 3 |
| League Championship Series | October 11 (no earlier than) |
| World Series | October 23 |
Markets
- Single games: winner, and often run line and total runs
- Series winners
- World Series champion (a futures market you can buy now)
How to trade it
- Open Kalshi or ProphetX.
- Search "World Series" or the team.
- Check the starting pitchers before buying game markets; they move prices most.
- Use limit orders and consider selling a series position as it swings.
Kalshi offer, checked 27 September 2026
Trade $25, get $25
Promo code: WINPREDITCS
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Terms apply.
Frequently asked questions
When is the 2026 World Series?
It starts Friday, October 23, 2026. If it goes seven games, Game 7 is on Saturday, October 31.
