Health is wealth? Polymarket and Kalshi now host bets on measles and other US health crises
Experts warn of risks of platforms hosting bets tied to US public health – including vaccine mandates and drug trials
Experts warn of risks of platforms hosting bets tied to US public health – including vaccine mandates and drug trials
Trump son advised Kalshi and got equity while Trump admin helped Kalshi in lawsuits.
Trump Jr. has been an advisor to both Kalshi and its rival Polymarket during the prediction market-friendly administration of his father. Kalshi told Bloomberg that the company and Trump Jr. “mutually agreed” to part ways after his venture capital firm invested in Polymarket this summer. [Link: Donald Trump Jr. Out as Kalshi Adviser Following Midterms | https://www.bloomberg.com/news/articles/2026-11-12/donald-trump-jr-out-as-kalshi-adviser-following-midterms | Bloomberg]
The president's son will no longer serve as an advisor at Kalshi.
Amid growth of its U.S. exchange, the prediction market platform’s current annual run-rate is $1.8 billion.
Kalshi and Polymarket are developing a reputation as a place where Americans go to lose money. But they have also created an opening for a few sharps.
Security incident linked to performance-monitoring tool spurred platform to halt trading for about an hour
Polymarket said it paused trading “out of an abundance of caution” after one of its third-party partners was “compromised.” Some users reported that their accounts were drained shortly before the stoppage. “We’ll make this right and are fully reimbursing all affected traders,” Polymarket said. [Link: Some Polymarket user funds stolen by hackers, exchange referring matter to U.K. authorities | https://www.cnbc.com/2026/10/29/polymarket-reports-outage-on-international-exchange-halts-trading.html | CNBC]
The outage comes just days before the platform is expected to experience heightened trading during the U.S. midterm elections.
Prediction markets' failure to call an LA primary correctly raised the possibility they can be manipulated to exaggerate the amount of support candidates have.
The company says an unnamed third-party provider was compromised. Trading has resumed, and Polymarket says affected traders will be made whole.
In a city where almost everyone is privy to some kind of inside information, betting on politics has surged ahead of midterm elections.
The CFTC is examining whether Polymarket kept US users off its offshore platform as promised in 2022, Reuters reports, citing two sources.
The prediction market has hired a former FBI official to make sure political insiders don't use the platform for profit from confidential election information.
The federal agency had previously investigated whether Polymarket allowed U.S. users on to its offshore platform in 2024, but dropped the measures in July 2025.
Maybe this will go better than NBA Top Shot did.
The league also inked a memorandum of understanding with the CFTC, the federal regulator of prediction markets.