KEY POINTS
  • Dimon, 63, spent much of last year mulling a 2020 presidential run, sources said. He ultimately decided that he couldn't win either party's nomination. 
  • He is now focusing on ways to influence policy from his business positions, as evidenced by his 51-page shareholder letter released Thursday. 
Jamie Dimon, chief executive officer of JPMorgan Chase, attends a Strategic and Policy Forum meeting with U.S. President Donald Trump, not pictured, in the State Dining room of the White House in Washington, D.C. last February.

Whenever the inevitable question arose at events both public and private, Jamie Dimon would pause and smile before ruling out a presidential run.

But the billionaire J.P. Morgan Chase CEO actually spent much of 2018 weighing whether he should give it a shot, according to people with knowledge of the situation.