Last mentioned: Mar 26, 2026
Coordinated Response
Kalshi and Polymarket announce sweeping new bans on insider trading and high-risk participants.
Legislative Threat
Bipartisan Senate bill introduced to ban sports betting on prediction platforms.
Suspicious Activity
Reports emerge of insider trading on US-Iran ceasefire contracts.
State Pressure
Illinois regulators declare prediction markets a form of illegal gambling.
Anticipated State Hearing
Expected date for initial state court arguments regarding the legality of prediction markets in Nevada.
Federal Remand Issued
Judge sends cases back to Nevada state court, shifting jurisdiction to local gaming regulators.
Injunction Threat
Nevada authorities signal intent to file for immediate temporary injunctions against both platforms.
Leading prediction markets Kalshi and Polymarket have introduced strict new prohibitions on insider trading to bolster market integrity and regulatory compliance. The move marks a significant professionalization of the industry as it seeks to transition from niche speculative platforms to mainstream financial instruments.
Leading prediction markets Kalshi and Polymarket have implemented sweeping new bans on insider trading to preempt restrictive federal legislation. The move comes as US Senators advance a bipartisan bill aimed at curbing the platforms' expansion into sports and political betting.
Coinsilium Group has announced a strategic expansion into the decentralized prediction markets sector, leveraging its venture-building model to support emerging protocols. The move follows a period of record-breaking volume for prediction platforms, signaling Coinsilium's intent to capture market share in the rapidly evolving forecasting economy.
State regulators are intensifying scrutiny on prediction markets Kalshi and Polymarket, alleging the platforms are offering unlicensed sports betting. The move threatens to disrupt the companies' ambitious $20 billion valuation targets as they face a jurisdictional clash between federal event contract rules and state gambling laws.
The explosive growth of prediction markets has been catalyzed by a fierce personal rivalry between Polymarket's Shayne Coplan and Kalshi's Tarek Mansour. As these platforms move from niche crypto projects to mainstream financial tools, the clash between their regulated and decentralized philosophies is defining the future of the 'truth economy.'
A federal judge has remanded Nevada's legal challenges against Kalshi and Polymarket to state court, clearing the path for regulators to seek immediate trading halts. The decision intensifies pressure on prediction markets as authorities investigate concerns over insider trading and unfair information advantages.
Dragonfly Capital has successfully closed its fourth venture fund at $650 million, signaling a flight to quality in the digital asset space. The raise comes as the broader blockchain venture capital landscape faces a period of severe consolidation and capital scarcity.
This page surfaces every story mentioning Polymarket across our startup coverage. We track each entity's appearance over time so readers can trace how the narrative evolves — which developments are isolated incidents, which build into longer arcs, and which reframe how operators in the space think about the entity. Story selection uses the same multi-source verification gate applied across the rest of our coverage.
Read our editorial methodology for how we identify, deduplicate, and score entity references. Our glossary defines the technical terms used across stories on this page, and our trends index contextualizes individual developments against the longer-running startup beat. Cross-entity comparisons live on our compare view.
| What you see | What it tells you |
|---|---|
| Story count | Number of distinct stories where Polymarket was a primary or referenced actor. |
| Recency clustering | Whether mentions are concentrated in a recent window (a news cycle) or distributed (a sustained arc). |
| Sentiment distribution | Aggregate sentiment of the stories mentioning this entity, weighted by impact score. |
| Cross-niche links | When the same entity surfaces in our sibling networks, we link to those views to enrich context. |