State prosecutors are escalating a jurisdictional fight over whether state gambling laws or federal derivatives regulation govern prediction markets.

The platform's self-trading enforcement comes days before the midterm elections, as scrutiny of prediction market integrity grows.

Polymarket says it has refunded affected users after a third-party script compromise, one of several recent crypto security incidents.

The federal regulator is signaling it will litigate preemption of state gambling laws all the way to the nation's highest court.

Market-implied odds favor Democrats as polls and prediction platforms converge on a possible blue wave in the midterms.

Kalshi is asking federal courts to block state gambling enforcement as multiple states move against event contracts.

Polymarket paused trading and said it would refund affected users after a compromised third-party analytics script drained roughly $2.7M from hundreds of wallet

Polymarket is reviewing dozens of newly created wallets that placed suspiciously timed bets on Israel's election, the latest integrity question for the platform

US senators asked the two prediction market operators to disclose how they police insider trading ahead of the midterms.

Traders kept using the platforms on Maryland elections even after state regulators moved to bar such contracts.

A single large holder took a six-figure position against Republican control of the House days before the midterms.

Kalshi and Polymarket contracts show Democrats favored to take both chambers as traders price the final stretch of the midterm campaign.

State prosecutors allege Kalshi and co-founders Tarek Mansour and Luana Lopes Lara promoted illegal gambling, escalating the federal-state fight over prediction

The round, co-led by Sequoia and Wellington, gives Kalshi a $40B valuation and new capital for exchange products even as state regulators push back.

CFTC Chair Michael Selig argues federal law gives the agency exclusive authority over event contracts, setting up a high court test of state gambling laws.

The multi-year deal makes the Sixers the first NBA franchise with an official prediction market partner and drew criticism over gambling's growing role in sport

Kalshi filed suit against the Missouri attorney general over a cease-and-desist letter, adding to its pattern of preemptive federal challenges to state oversigh

Lawmakers want the platforms to disclose safeguards against insider trading in election-related event contracts ahead of the midterms.

The probe follows well-timed bets on the Israeli election, adding to scrutiny of whether prediction market traders had non-public information.

Lawmakers are questioning the two prediction market platforms over whether traders are profiting from non-public election information.

Volume on banned Maryland election contracts shows traders routing around state-level restrictions on prediction markets.

Contract prices have shifted sharply toward Democrats in both the House and Senate as the midterm campaign closes.

Betting markets and statistical models are giving Democrats different midterm odds, reviving debate over which pricing is more reliable.

Haaretz reports the platform flagged late wagers tied to Netanyahu's electoral performance in Israel.

Prediction markets are becoming a material revenue line for Robinhood even as its crypto business cools, underscoring how event contracts are reshaping retail b

Two outlets weigh in on the selloff, with one asking why the shares have fallen so far from their peak and another framing it as a buying opportunity.

A political opening reportedly shifted pricing on the UK's EU membership question on the Kalshi exchange.

A new entrant is building event-contract trading on the ForecastEx venue, adding to the roster of regulated US prediction market infrastructure.

Multiple outlets published ranked lists of prediction market apps and Kalshi-alternative sites, reflecting continued consumer interest in event trading.

State-by-state legal explainers continue as platforms navigate a patchwork of US gambling and derivatives rules.

The state action escalates the jurisdictional fight over prediction markets, drawing a CFTC request to block the prosecution as Kalshi's valuation climbs.

Federal regulators argue state criminal enforcement conflicts with CFTC oversight of event contracts.

The agency signals it will litigate federal preemption of state gambling laws all the way up if states keep pursuing prediction market operators.

The new round underscores how sports-driven trading has made the private exchange one of the most valuable venues in the sector.

The suit is the latest front in the exchange's strategy of preemptively challenging state crackdowns in court.

Federal lawmakers are considering legislation that would restrict event contracts or cede authority to states.