The "buy the rumor, sell the news" strategy is a popular approach to trading where traders buy stocks or securities based on rumors or anticipated news, and then sell them once the news becomes public and the price has increased. While this strategy can work in some cases, it's not guaranteed to be successful and can be risky. Sometimes the rumors turn out to be false, or the news may not have the expected impact on the security's price. Also, traders who wait for the news to be released may miss out on potential gains from the price increase that occurs due to the rumor. In general, traders who use this strategy should be cautious and carefully evaluate the risks and potential rewards before making any trades.