Alito gives New Jersey until Aug. 4 to seek Supreme Court review of Kalshi ruling

Spotify asks Kalshi and Polymarket to remove logos over chart-rigging markets

Spotify's demand forces Kalshi and Polymarket to strip branding they never licensed, exposing how casually prediction markets have treated third-party trademarks in rush-to-market contract designs. For traders, the fake-stream scandal reveals settlement risk that runs deeper than price manipulation: Spotify can retroactively scrub data that event contracts rely on, turning a blacklist decision into a market resolution event. Neither platform has disclosed whether it will compensate traders who lost positions when streams were invalidated. Competitors in entertainment event contracts must now secure both data partnerships and brand permissions before launch, or face the same dual reprisal Spotify just executed in a single afternoon.

Citadel Securities hired Polymarket's CTO, formerly of Citadel

A senior Polymarket technologist decamping to a top market maker signals that traditional finance views prediction-market infrastructure as strategically valuable. It also tightens the already close talent competition between crypto-native platforms and established trading firms.

Citadel Securities joins DRW, Wintermute, and IMC among established trading firms moving into prediction-market infrastructure, as the talent and liquidity arms race between crypto-native platforms and traditional finance intensifies.

Conor McGregor teases July 11 Polymarket partnership

The McGregor deal gives Polymarket a celebrity channel to casual sports fans that Kalshi and Rothera lack. UFC fight weeks already drive search and social traffic; McGregor's global following turns that spike into a onboarding funnel for event-contract trading. Polymarket needs retail volume growth to justify its valuation and defend against Kalshi's $40 billion funding push. A July 11 launch tied to McGregor's return creates a timed event that competitors cannot easily replicate. The risk is that Polymarket's overlapping regulatory scrutiny from the CFTC probe into staged influencer bets could overshadow the campaign or draw fresh questions about whether celebrity promotions disclose trading risks. Either outcome shapes whether sports fans see Polymarket as a betting venue or a regulated exchange.

Polymarket's deepening UFC relationship now spans paid social promotion, a McGregor commercial, and a teased July 11 product launch, making the fight promotion the most active sports-league partner among CFTC-registered prediction markets.

Vermiculus to build 24/7 clearing system for prediction markets for unnamed crypto exchange

For prediction markets to trade continuously, someone must clear trades continuously. Vermiculus's VeriClear system is designed to do exactly that, eliminating the batch-processing windows that traditional clearing houses use overnight and on weekends. The unnamed exchange — described as one of the world's largest crypto venues — is betting that event-contract volume will grow large enough to justify dedicated infrastructure. If the rollout succeeds, other exchanges racing to add prediction markets will face a build-or-buy choice on clearing capacity. Vermiculus gets a reference customer that validates its technology for crypto-native venues, while competitors in the clearing infrastructure space must show they can match 24/7 uptime or risk losing similar deals.