It was not the only bank that came into the Covid crisis with a strong balance sheet, but, as in 2008, the bank has shown that its diverse businesses provide plentiful earnings to take big reserves, even while it keeps financing large corporates and small businesses alike. Deposits have flooded in, technology investments have proved their worth and it is winning more business from mid-cap clients inside and outside the US – and it coped with the temporary absence of a legendary chief executive.