Billionaire activist investor Carl Icahn raised his stake in U.S. printer maker Xerox Holdings Corp. to about 14.4% as of Nov. 5, according to a filing, months after he backed the company's abandoned takeover of personal computer maker HP Inc.

Xerox's shares (XRX) rose 3.4% in extended trading on the news.

Icahn, who last reported a stake of 12.9% in Xerox as of Sept. 9, had also built a sizable stake in HP around the time Xerox reached out to it for a merger.

HP rebuffed Xerox's initial offers and Xerox went hostile with its bid but ultimately gave up the pursuit in March due to the coronavirus pandemic.

Icahn dissolved his shared share stake in HP as of the end of June, as per filings with the U.S. Securities and Exchange Commission.