OpenAI fires employee for Polymarket insider trading

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- OpenAI fired an employee after an internal investigation linked the employee’s activity on prediction‑market platforms, including Polymarket, to the use of confidential company information.
- Fidji Simo disclosed the termination in an internal message to staff earlier this year, emphasizing that the company’s policies forbid using confidential information for personal gain in prediction markets.
- Unusual Whales flagged 77 positions across 60 wallet addresses as suspicious insider trades tied to OpenAI‑themed events since March 2023, analyzing account age, trading history, and investment size.
- Matt Saincome of Unusual Whales noted that 13 newly created wallets with zero prior activity collectively wagered $309,486 on the outcome of OpenAI’s browser launch within 40 hours, suggesting coordinated insider activity.
- Kalshi reported several insider‑trading cases to the Commodity Futures Trading Commission, including a former employee of YouTuber Mr. Beast fined $20,000 and a political candidate banned for trading on his own campaign.
- Polymarket has not responded to requests for comment regarding the alleged insider trading involving OpenAI information.
Why it matters: The termination shows that large AI firms are actively enforcing insider‑trading bans, curbing employees from profiting on confidential product timelines, while the scale of flagged trades—over $300 k across dozens of wallets—highlights the systemic risk of prediction‑market abuse and prompts regulatory attention.



