The dark side of the prediction market boom is becoming more clear: Experts say the sites have become go-to outlets for gambling addicts to relapse as the companies avoid state consumer protections.

In the Oscar-winning filmmaker's latest documentary, director Alex Gibney investigates the rise of Elon Musk and says what's behind Musk's success are distressing truths.

The tech billionaire's attorney has put documentarian Alex Gibney and his production company on legal notice, claiming the Oscar-winning director defamed Musk in his nearly four-hour documentary.

Betting on what people say is becoming an increasingly popular category of prediction market sites. Now, federal officials have opened a probe examining whether those markets are a magnet for manipula...

Researchers warn betting on clinical trials could incentivize insider trading and interfere with drug development. But Kalshi and Polymarket say they provide valuable information to patients.

The president's media company is offering investors early access to his Truth Social feed for up to $100,000 a month. Experts say the service may violate insider trading laws.

The spat between the leading prediction market company and a key battleground state could be a glimpse into the next major fight between states and the fast-growing industry.