WIRED - The Latest in Technology, Science, Culture and Business @wired.com@web.brid.gy · activity timestamp last week OpenAI Fires an Employee for Prediction Market Insider Trading Prediction markets like Polymarket and Kalshi are big business, and some Big Tech employees are testing boundaries by making trades based on insider knowledge. Read more Read less Translate Translate alt Sorry, no caption provided by author Sorry, no caption provided by author Reply Boost or quote Boost Quote You cannot quote this post Like More actions Copy link Flag this post Block