Armstrong

A Wall Street analyst that maintained a “buy” rating on Comcast stock for most of the past four years is leaving Goldman Sachs after 13 years to become Comcast’s head of investor relations.

Jason Armstrong, often heard on earnings conference calls of major telecommunications companies, will start his new job in January, although his job change has not been publicly announced.

Armstrong served as the investment bank’s lead analyst for the cable, telephone and satellite sector. He arrived at Goldman Sachs in 2000 after leaving Ernst & Young, LLP in Chicago.

Officials from both Goldman Sachs and Comcast declined to comment.