Speculation around a potential OpenAI acquisition of Pinterest Inc. (NYSE:PINS) is gaining traction, with traders now putting real money behind the idea.A Kalshi bet on whether the Sam Altman-led company will announce an acquisition of Pinterest by Jan. 1, 2027, is actively trading, offering a real-time look at how investors and forecasters are pricing the probability of a deal. The renewed interest follows a recent report from The Information, which included the ChatGPT owner acquiring the digital pinboard ...