Event Dime
Prediction Markets Have an Insider Trading Problem. Are They Still Worth the Gamble?
- When:
- June 5, 2026 · 5:06 AM
- Where:
- 17% Of All US Restaurants Are Pizzerias
- Source:
- 17% Of All US Restaurants Are Pizzerias
By: Pete Grieve – Editor: Julia Glum A press briefing was cut suspiciously short. A long-shot bet on the former Venezuelan president’s downfall made just hours before his capture. A flood of trades from brand-new accounts predicting a ceasefire with Iran. As prediction markets like Kalshi and Polymarket explode in popularity in the U.S., they are also facing growing allegations of insider trading. The scrutiny is intensifying as state officials, members of Congress and the media call out what th