Citigroup's Pandit told employees he has "no desire" to sell any part of the firm. Citi is working to stabilize its shares, which hit a 16-year low.

Members of GM's board are willing to consider "all options," including an eventual bankruptcy-protection filing, a stance CEO Rick Wagoner opposes.

Wal-Mart said CEO Scott is retiring and named Mike Duke, who heads the international operations, to succeed him starting in February.