JPMorgan CEO Jamie Dimon is raising a red flag about today’s financial markets, warning that the current environment is starting to resemble the risky conditions that existed just before the 2008 financial crisis. Speaking about the state of the economy and capital markets, Dimon said he’s seeing behavior that reminds him of the 2005–2007 period, when excessive risk-taking quietly built up across the financial system. According to him, some investors and companies today are doing “dumb things,” chasing returns without fully considering the potential consequences if conditions change. Dimon pointed specifically to areas where easy money and aggressive financial strategies have pushed valuations and leverage higher. While the broader economy remains relatively strong, he suggested that pockets of the market may be underestimating how quickly sentiment can shift if interest rates stay elevated or economic growth slows. The JPMorgan chief has long been known for his cautious outlook on sys...