5 Things You Should Know Before the Stock Market Opens

Investigations are deepening into the potential involvement of Goldman Sachs(GS) employees in the Galleon Group insider-trading ring, according to The Wall Street Journal.

U.S. prosecutors and securities regulators are investigating whether a senior Goldman investment banker gave Galleon hedge-fund traders advance word of pending health care deals, according to people familiar with the matter, the newspaper said. The banker, whom the people identified as Matthew Korenberg, is a San Francisco-based managing director for Goldman, a senior post.

Federal prosecutors in Los Angeles are looking into whether Korenberg told Galleon founder Raj Rajaratnam of acquisitions of Advanced Medical Optics and MedImmune in 2009 and 2007, respectively, Reuters said.

-- Written by Joseph Woelfel

>To contact the writer of this article, click here: Joseph Woelfel

>To submit a news tip, send an email to: tips@thestreet.com.