Calendar·10 min read
Prediction Markets Calendar: May: July 2026
The NBA Finals, the Stanley Cup, the French Open, the World Cup, and a Federal Reserve meeting all land inside a 10-week window. Here's the full prediction markets calendar for May through July 2026: what's tradable, when, and on which platforms.
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Sources & further reading
Every figure and legal claim on this page traces back to a primary source. These are the ones we checked, open them and verify us.
- CFTC: Commodity Futures Trading Commission
The federal regulator that authorizes and supervises every event-contract exchange we cover.
- CFTC designated contract markets registry
Official list of registered exchanges, where we verify a platform's DCM status.
- Federal Reserve: FOMC calendar and statements
Meeting dates, statements, and the dot plot that Fed contracts resolve against.
- NFL official site
Schedules, standings, and injury reports behind NFL contract resolution.
Frequently asked questions
What prediction market events happen between May and July 2026?
- NBA Finals (starts June 3), Stanley Cup Playoffs and Final, French Open (May 24-June 7), Wimbledon (late June into July), World Cup (June 11-July 19), three Federal Reserve meetings, MLB regular season, and the Tour de France. It's the densest 10-week window of tradable events on the 2026 calendar.
Which prediction market platform covers the most events?
- Kalshi covers essentially every major event in this window: NBA Finals, Stanley Cup, tennis majors, World Cup, Fed meetings, and more. For a single account that handles the whole calendar, Kalshi is the default choice.
When does the 2026 NBA Finals start?
- The 2026 NBA Finals begin Wednesday, June 3, 2026, on ABC. The series runs through potentially late June if all seven games are played.
When does the 2026 World Cup start?
- The 2026 World Cup begins June 11, 2026, and runs through July 19. It's co-hosted by the US, Mexico, and Canada, with eight matches at SoFi Stadium in LA.
Will the NBA Finals and World Cup overlap?
- Yes. The NBA Finals (starting June 3) and the World Cup group stage (starting June 11) overlap for roughly two weeks. Early June 2026 will likely be the single highest-volume period in US prediction market history.
Can I trade the French Open and Wimbledon from California?
- Yes. Tennis major outright winner contracts, quarterfinal and semifinal advancements, and some match-level markets are available on Kalshi and other CFTC-regulated platforms, legal for California residents.
How much should I budget for this period?
- Set an event-based budget rather than a monthly one. Decide in April how much you're willing to commit across the entire May-July window. Do not revise it upward mid-tournament. Common sense budgeting beats position-by-position enthusiasm.
Should I use one platform or multiple?
- Two is usually the sweet spot. A primary platform (Kalshi for breadth) plus one specialist (Chalkboard for props, Sleeper for social, Rebet for cross-sport trading). Spreading funds too thin across seven accounts makes meaningful trading harder.
What are the tax filing requirements for profits made during the 2026 summer cycle?
- California residents must report net profits as capital gains. Kalshi provides a 1099-B form detailing your transactions, while Polymarket does not issue tax documents. You are responsible for self-reporting all trading activity to the IRS and the California Franchise Tax Board regardless of whether a platform sends a form.
Which platform has the lowest fees for trading the 2026 World Cup and NBA Finals?
- Polymarket is the top-ranked choice for low costs due to its decentralized nature, though it requires interacting with USDC on the Polygon network. Kalshi, ranked third, charges transaction fees per contract. Crypto.com, ranked second, integrates trading into its existing exchange fee structure for California users.
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Top platforms Californians are using:
Kalshi
The regulatory leader.
Sign up at KalshiCertain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 21+ 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.
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