OpenAI Fires Employee for Trading on Inside Information in Prediction Markets

Quick Facts

• OpenAI fired an employee for using confidential information to trade on prediction markets like Polymarket
• Analysis found 77 suspicious wallet addresses made unusual bets around OpenAI events since March 2023
• The termination sets a precedent for corporate governance as prediction markets grow to a $60 billion annual industry

OpenAI has fired an employee for using confidential company information to make trades on prediction markets, according to an internal message from CEO of Applications Fidji Simo. The termination marks one of the first known corporate enforcement actions in the rapidly growing prediction markets space.

The company declined to name the terminated employee but confirmed the firing violated policies that prohibit workers from using inside information for personal gain. “Our policies prohibit employees from using confidential OpenAI information for personal gain, including in prediction markets,” spokesperson Kayla Wood said.

Financial data platform Unusual Whales identified a pattern of suspicious trading around OpenAI events since March 2023. The analysis flagged 77 positions across 60 wallet addresses as suspected insider trades based on account age, trading history and investment significance.

The most striking example occurred before OpenAI launched its browser. In the 40 hours prior to the announcement, 13 brand-new wallets with zero trading history appeared on prediction markets to collectively bet $309,486 on the correct outcome.

“When you see that many fresh wallets making the same bet at the same time, it raises a real question about whether the secret is getting out,” Unusual Whales CEO Matt Saincome said.

Additional suspicious activity included a November 2023 trade where a new wallet bet that Sam Altman would return as CEO two days after his dramatic ouster, netting over $16,000 in profits. The account never placed another bet.

The Commodity Futures Trading Commission responded with a stern warning this week. Commissioner Michael S. Selig posted on X that “If you attempt to engage in manipulation, fraud, or insider trading, we will find you and take action.”

The CFTC’s Enforcement Division issued guidance citing Rule 180.1, which prohibits “misappropriation of confidential information in breach of a pre-existing duty of trust and confidence.” Unlike traditional securities, prediction markets operate in a regulatory gray area with limited oversight.

Prediction markets have exploded to a $60 billion annual industry, up roughly 400% from 2024. Wall Street firms including Goldman Sachs, Jump Trading and Susquehanna have established dedicated trading desks for the sector.

The OpenAI case sets a corporate precedent as other tech giants remain silent on their prediction market policies. Google, Meta and Nvidia did not respond to inquiries about employee trading restrictions, despite known cases like the “Google whale” that made over $1 million trading on Google-related events.

For OpenAI, the firing demonstrates how companies are becoming regulatory laboratories, setting standards without clear legal guidance. The case highlights how internal information can be quickly monetized in modern online markets, making confidentiality enforcement both a practical and reputational necessity.

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