The moment a prediction market resolves is when real money changes hands. Most markets resolve cleanly, but when they don't—disputed outcomes, ambiguous wording, or contested data sources—the process matters enormously. Here's how resolution works on Kalshi and Polymarket, what can go wrong, and how to protect yourself.
How market resolution works
Every prediction market contract has resolution criteria defined at creation:
- Data source: What official source determines the outcome (NWS for weather, AP for elections, BLS for jobs data, etc.)
- Resolution date: When the outcome is determined
- Resolution conditions: The specific conditions for Yes vs No payout
- Edge cases: What happens if the event is cancelled, postponed, or ambiguous
When criteria are clear and outcomes are unambiguous, resolution is automatic. Problems arise when reality doesn't fit neatly into the contract's Yes/No framework.
How Kalshi resolves markets
Kalshi is CFTC-regulated, which provides a formal structure:
- Pre-defined criteria: Every market has CFTC-approved resolution criteria written before trading begins.
- Official data sources: Kalshi uses designated data sources (government agencies, wire services) for resolution.
- Automated resolution: Most markets resolve automatically based on data feeds.
- Dispute process: Traders can challenge a resolution through Kalshi's compliance team.
- CFTC oversight: As a last resort, the CFTC has authority over resolution disputes on Kalshi.
How Polymarket resolves markets
Polymarket uses a different model:
- UMA oracle: Polymarket has used the UMA optimistic oracle for dispute resolution, where token holders vote on outcomes.
- Resolution committee: Polymarket has an internal resolution process for determining outcomes on disputed markets.
- Community input: Traders can flag and dispute resolutions through the platform.
- Resolution sources: Each market specifies its resolution source, but enforcement is less formalized than Kalshi's CFTC-backed process.
Notable resolution disputes
Several high-profile disputes have shaped how prediction markets handle resolution:
- Ambiguous wording disputes: Markets where "by" could mean "before" or "on or before" a specific date. One-word differences can flip millions of dollars in outcomes.
- Source disagreements: When different official sources report different outcomes, which one is the resolution source?
- Cancelled events: What happens when a scheduled event (debate, speech, game) is cancelled? Does Yes or No win?
- Contested elections: When election results are challenged or recounted, when does the market resolve?
These disputes have pushed both platforms to write more precise resolution criteria and improve their dispute processes.
How to protect yourself
- Read resolution criteria before trading: This is the single most important step. Don't trade a market you don't fully understand.
- Check the data source: Know exactly which source determines the outcome. If it's ambiguous, be cautious.
- Look for edge cases: What happens if the event is postponed? Cancelled? Modified? Good resolution criteria address these.
- Avoid ambiguous markets: If the resolution criteria are vague, the risk of a disputed outcome is higher. Stick to markets with clear, objective criteria.
- Diversify: Don't concentrate too much capital in any single market. A resolution dispute could lock up your funds for weeks.
- Check platform history: How has the platform handled past disputes? Platforms with a track record of fair resolution are lower risk.
Kalshi vs Polymarket resolution compared
- Formality: Kalshi's CFTC regulation provides more formal protection. Polymarket's process is more flexible but less predictable.
- Speed: Kalshi typically resolves faster with automated data feeds. Polymarket disputes can take longer through the oracle process.
- Transparency: Both platforms publish resolution criteria, but Kalshi's regulatory filings add an extra layer of accountability.
- Recourse: On Kalshi, you can escalate to the CFTC. On Polymarket, your recourse is limited to the platform's internal process.
Stay informed with Alphascope
Alphascope helps you understand markets before you trade:
- Predictions → Browse markets with full details across both platforms.
- News → Track events that could create resolution complications.
- Arbitrage → Price differences between platforms may signal resolution risk if markets aren't identical.
FAQ
What happens if a prediction market resolves incorrectly?
On Kalshi, you can dispute through their compliance process and ultimately the CFTC. On Polymarket, dispute through the oracle process or resolution committee. Both platforms have reversed resolutions in the past.
Can I get my money back from a disputed market?
If a dispute is resolved in your favor, yes. During a dispute, your funds may be locked until the outcome is determined. This can take days to weeks.
How do I avoid resolution disputes?
Read resolution criteria carefully before trading. Stick to markets with clear, objective criteria and well-known data sources. Avoid markets with vague or subjective resolution conditions.