By Michael S. Derby, includes “The Chicago Fed said that Ms. Pramaggiore stepped down from her position on Oct. 25. The resignation wasn’t made public by the Chicago Fed until it was confirmed by a bank spokesperson in response to a question from The Wall Street Journal. … Ms. Pramaggiore abruptly retired on Oct. 15 from her job as chief executive of the utilities unit of Exelon Corp., the largest operator of nuclear plants in the U.S., less than a week after the company said it had received a second grand-jury subpoena from federal prosecutors looking into its lobbying activities in Illinois.”