For Jack Dorsey, It’s No Longer Hip to Be Square at Twitter

It seems even Jack Dorsey has a character limit.

After more than a year and a half of pressure from activist investor Elliott Management, Mr. Dorsey will step down as the chief executive officer of Twitter , the company said Monday. Chief Technology Officer Parag Agrawal will succeed Mr. Dorsey as CEO, effective immediately, the company also said, noting that Mr. Dorsey will remain a member of Twitter’s board until his term expires next year. Twitter’s stock was up immediately after the news, but lost steam later in the day.