Jamie Dimon doesn’t mince words. “It’s gung ho, folks.” The JPMorgan Chase chief executive delivered that blunt assessment Wednesday at the Bernstein Strategic Decisions Conference. He described lending, trading and investment banking clients as fully engaged. Sponsors stay busy. Companies push forward. Exuberance fills the air. Yet Dimon tempered the optimism in classic fashion. He recalled past periods of high spirits in 1972, 1986, 2000 and 2007. That history gives him no comfort. The message landed as JPMorgan raised its full-year 2026 expense outlook by $1 billion to roughly $106 billion. The adjustment stems directly from stronger performance. Higher investment banking fees and trading revenue drive variable compensation. Yahoo Finance first reported the remarks and the updated guidance. The bank had guided to $105 billion in expenses just last month. Now the figure sits closer to $106 billion.…