https://apnews.com/d2f8fcbe9fd7307de7c1be54dc470dff

NEW YORK (AP) — Twitter shares rose Monday following reports an activist investor took a stake in the social media service and plans to push for changes.

Elliott Management Corp. has taken a $1 billion stake in the company and plans to nominate four directors to the board, according to a person familiar with the matter who spoke on condition of anonymity. The Wall Street Journal reported the plans on Saturday, also citing an unnamed person. Elliott could be seeking to replace founder and CEO Jack Dorsey, according to the Journal report.