Citigroup

Financial institutions of all sizes are offering low- or zero-rate loans, waiving fees and making other arrangements to aid federal workers — a practice that regulators officially blessed on Friday, the 21st day of the closing of many U.S. agencies.

Citi wants to attract credit card customers who use its card for staples such as groceries and gas — a pivot from its past of marketing to the social butterflies who would use its cards on dining and entertainment.

Treasury Secretary Steven Mnuchin called top executives from the six largest U.S. banks over the weekend, he said Sunday on Twitter, a move that followed heavy losses in the stock market last week and a partial federal government shutdown.

The software, which was developed by Feedzai, will eventually block payments that appear to be fraudulent or mistaken.

The structure of Citigroup's newly combined investment banking and capital markets division is becoming clearer, with the appointment John Chirico and Kevin Cox as co-heads of the business for North America.