Kalshi is running a heavy advertising campaign on TikTok promoting event contracts tied to the reality competition show Dancing with the Stars, according to a social media post noting the frequency of the ads. The campaign appears aimed at broadening the platform's user base beyond political and financial markets into entertainment content.

Polymarket published documentation for PolyBolt, a live data channel websocket API. The docs cover JSON text frames tagged with operation codes, server acknowledgments, and real-time feeds for crypto, equity, and TWAP reference prices. The page is routine technical documentation rather than a product announcement. Both summaries describe the same docs page published on September 23, 2026. One summary frames the API as a general live data channel; the other names it PolyBolt and lists the asset classes covered.

Novig is pitching itself as a sports-only prediction market app, deliberately narrowing its scope to differentiate from broader platforms Kalshi and Polymarket. The positioning comes as Novig pushes a national advertising campaign starring Sydney Sweeney, who took an equity stake rather than a flat fee. That creative has drawn public criticism, including from women in sports, putting pressure on the brand's marketing strategy even as it tries to build name recognition against better-funded rivals.

Nearly 500 Polymarket US users were hit in late July by a fraud attack that did not require a password, a username, or a compromised phone, according to a Wall Street Journal report published September 20. The attackers exploited a bug to access existing accounts.

Polymarket has implemented an anomaly trading detection system to address irregular trading activity, according to Shana Bautista, the platform's Director of Global Investigations and Intelligence. The system is designed to identify and flag suspicious trading patterns on the prediction market platform.

Polymarket paused trading on August 22, 2026 at 1:13 PM due to a major outage affecting its Trading API (CLOB). The incident was identified nine minutes after it began, at 1:22 PM. The platform's status page flagged the disruption as a major outage.

Polymarket has opened a prediction market on the timing of Anthropic's Claude usage limits reset. The market combines prediction market mechanics with crypto integration, according to the platform.