How Do Prediction Markets Get Listed?
Not every event becomes a prediction market. Platforms apply strict criteria — and most proposals never make it to launch. Here's what separates listed markets from rejected ones.
Why this matters
Reddit users frequently complain that Polymarket listings feel "relationship-based" or arbitrary. The reality is more boring: markets get listed (or rejected) on a consistent set of operational criteria. Understanding those criteria helps you predict which events will have markets — and why your favorite niche topic probably won't.
Platform listing models
Not all platforms list markets the same way. The regulatory structure determines how much freedom each platform has.
Kalshi — CFTC self-certification
As a CFTC-designated contract market (DCM), Kalshi can self-certify new event contracts by filing with the CFTC and attesting that the contract complies with the Commodity Exchange Act and CFTC regulations. The CFTC retains the right to initiate a 90-day review. CFTC Regulation 40.11 prohibits event contracts referencing terrorism, assassination, and gaming — so Kalshi must keep new markets within those bounds. In practice, Kalshi lists markets across economics, politics, sports, crypto, weather, and entertainment.
Source: kalshi.com/market-integrity/regulation; Foley Hoag, June 2025
Polymarket — internal editorial curation + community suggestions
Polymarket does not allow open market creation. Their official documentation (docs.polymarket.com) states that market proposals can be submitted via the #market-suggestion channel in the Polymarket Discord or by tagging @polymarket on X. Submissions require a market question, resolution source, and evidence of trading demand. Approval is not guaranteed — Polymarket applies internal editorial discretion based on the same operational criteria above (clear resolution, reliable oracle, sufficient audience, no manipulation risk). Most community submissions are not approved.
Source: docs.polymarket.com/polymarket-learn/markets/how-are-markets-created
Metaculus / Manifold — open community creation
Non-CFTC-regulated platforms like Metaculus and Manifold allow users to create markets directly, with moderation after the fact rather than pre-approval. This makes them more flexible but less suited for large-dollar regulated trading.
Why markets get rejected
These are the four most common failure modes. A single one is enough to kill a listing.
Submitting a market to Polymarket
How to propose a market (per docs.polymarket.com)
Polymarket accepts market proposals through two channels:
- Discord — submit in the
#market-suggestionchannel - X / Twitter — tag
@polymarket
For the best chance of listing, your proposal should include: the market question, the resolution source, and evidence of demand (why enough traders will care to provide two-sided liquidity).
Honest caveat: Approval is not guaranteed. Polymarket applies internal editorial discretion — most community submissions are not listed. There is no public SLA for responses, and Polymarket does not publicly disclose rejection reasons.
Source: docs.polymarket.com/polymarket-learn/markets/how-are-markets-created
The approvable market checklist
Before asking "why isn't there a market on X," run through this list. If any required item fails, the event almost certainly won't get listed on any regulated platform.
Binary resolution
Question resolves to a clear YES or NO with no ambiguity.
Named data source
Resolution source is a public, verifiable, tamper-resistant third party (official results, major financial API, government agency).
Hard resolution date
Market expires on a specific date or a clearly defined triggering event with a fallback date.
Market audience exists
The event has a real addressable audience — enough traders will care to provide two-sided liquidity.
No participant can influence outcome
No trader in the market has material non-public information or the ability to move the outcome.
Legally permissible
The topic doesn't fall under prohibited categories (death pools, private individual conduct, legally restricted subject matter in the platform's jurisdiction).
(Polymarket) Submitted via official process
Polymarket accepts market proposals through its community process. Approval is not guaranteed and depends on editorial discretion.
(Kalshi) CFTC-regulated categories
Kalshi lists markets in CFTC-approved event contract categories only. Topics outside those categories require separate regulatory approval.
The honest bottom line
Prediction markets are not a universal bulletin board. They're curated instruments constrained by regulatory requirements, operational liquidity needs, and the limits of verifiable data sources.
The Reddit perception that listings are "relationship-based" is partially correct for Polymarket — the final decision is editorial, not purely algorithmic. But the editorial layer exists because ambiguous markets don't resolve fairly, and unfair resolutions destroy trust. The criteria above aren't arbitrary; they reflect what's required for a prediction market to actually function.
If your event isn't on any platform, the most likely reason is one of the four rejection modes — not that nobody's interested.