The SEC is investigating WorldCom's finances in these areas:
The SEC is examining how WorldCom (WCOM) accounted for goodwill, which ballooned to $50 billion through a series of acquisitions. WorldCom has said it will take a charge of up to $20 billion to write down goodwill later this year, but it could be forced to take a much larger charge.
The commission requested all documents related to loans WorldCom made to its officers and directors. CEO Bernie Ebbers has said he owes the company $340 million.
The SEC is looking into customer billing disputes and sales commissions paid to 14 people who were recently fired for alleged improprieties.