Biggest LBO ever ran aground after a wave of deregulation.

Securities division looks at role of underwriters, securities analysts in IPO.

Securities division looks at role of underwriters, securities analysts in IPO.

In the run-up to its IPO, the social networking company wrestled with the SEC over disclosures.

In the run-up to its IPO, the social networking company wrestled with the SEC over disclosures.

Agency asks companies including Google and Amazon.com to tell investors about cyber-attacks in filings.