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🔥 OpenAI fires an employee for insider trading in prediction markets

Kate Knibbs

2/27/2026

OpenAI logos on screens in Ankara, Turkey

OpenAI has taken drastic measures by firing an employee following an investigation into their activity on prediction market platforms, such as Polymarket. OpenAI's Applications CEO, Fidji Simo, communicated the decision in an internal message, stating that the employee used confidential company information to conduct trades in these markets.

OpenAI spokesperson Kayla Wood stated that "our policies prohibit employees from using OpenAI's confidential information for personal gain, including in prediction markets." Although the identity of the employee and the details of their trades have not been disclosed, the situation has highlighted a broader issue in the industry.

An analysis by the financial data platform Unusual Whales revealed suspicious patterns in activities related to OpenAI, marking 77 positions in 60 wallet addresses as potential insider trading operations. These trades focused on key events, such as product launches and the employment status of CEO Sam Altman.

The growing popularity of prediction markets has raised concerns about insider trading. These markets allow users to buy "event contracts" on future outcomes, ranging from sports to political events, leading to speculation about employees at large companies benefiting from their insider knowledge.

While Kalshi has reported suspicious cases to the Commodity Futures Trading Commission, Polymarket has kept a low profile on this issue. The lack of transparency regarding how large companies are monitoring their employees in relation to trading in prediction markets raises questions about ethics and regulation in this area.

Source: WIRED

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