Prediction markets like Polymarket and Kalshi are big business, and some Big Tech employees are testing boundaries by making trades based on insider knowledge.

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OpenAI fired an employee who used confidential company information to trade on prediction market platforms including Polymarket. CEO of Applications Fidji Simo disclosed the termination internally. Financial data platform Unusual Whales flagged 77 positions across 60 wallet addresses as suspected insider trades tied to OpenAI product launches and Sam Altman's employment status since March 2023. The pattern includes 13 brand-new wallets collectively betting $309,486 just before OpenAI's browser launch. Separately, Kalshi reported several insider trading cases to the CFTC, including an Mr. Beast employee suspension and a political candidate ban. Major tech companies including Google, Meta, and Nvidia have not disclosed policies on monitoring employees for prediction market insider trading.

OpenAI Fires an Employee for Prediction Market Insider Trading