Polymarket Bets on OpenAI, Google Raise Insider Trading Suspicions
Over the past week, a handful of accounts on Polymarket, the predictions site, bet OpenAI would release a new large language model by December 13. On Thursday December 11, OpenAI released GPT-5.2, and four of these accounts together made over $13,000, according to the trades displayed on their accounts. The payout is adding fuel to suspicions that a handful of accounts on prediction sites such as Polymarket and Kalshi aren’t just lucky—they’ve got access to private information about...