Each year, we close our blog with a holiday poem inspired by Clement Clarke Moore’s A Visit from St. Nicholas. This season, with markets at record highs but public trust in institutions on shakier ground, it seemed fitting to summon the ghost of J. P. Morgan himself. In “The Ghost of Trust,” Morgan visits on a December night in New York to remind us that even in an age of algorithms, skyscrapers, and artificial intelligence, the most important capital a firm can hold is integrity.