Beleaguered boss of America’s biggest high street bank to retire at the end of the year The beleaguered boss of Bank of America, is to step down at the end of the year, ending speculation over his future following a highly controversial deal to buy the brokerage Merrill Lynch. America’s biggest high street bank announced on Wednesday evening that Lewis, 62, will retire as chief executive and as a director, with effect on 31 December. No successor was named