Bloomberg reports Olympus Sued for $273 Million After 13-Year Fraud.
Six banks filed suit claiming 27.9 billion yen ($273M) damages from the drop in stock price after the fraud was disclosed.
The article says Olympus was sued in November 2012 by a group of investors. That claim was for 19.1B Yen ($186M). That one had been preceded by 14 other suits.