News bites: Digging deeper

Federal regulators are ramping up their probe of JPMorgan, thanks to Dodd-Frank.

The bank's "London Whale" was known to take big risks long before the $2 billion botch.

European concerns have led to slow-motion "trots" on weaker nations' banking systems.

The global economy is losing momentum, thanks to Europe's woes and China's slowdown.

Wal-Mart will soon hear from shareholders about its Mexican bribery scandal.