If there were any doubt as to the intentions of billionaire Carl Icahn for Caesars Resorts, that doubt is quickly being erased. After purchasing 10% of the casino giant last month, Icahn has upped his stake and is now the largest shareholder of the company. He is undoubtedly preparing the company to be put up for sale.

In a filing with the U.S. Securities and Exchange Commission (SEC) from last Friday, the 83% serial investor announced that he now owns 15.53% of Caesars. In a separate announcement last week, Caesars acknowledged that it had given Icahn a couple of sports on the company’s board of directors, and that Courtney Mather, James Nelson and Icahn Enterprises CEO Keith Cozza had replaced three members on the 12-person team.

In taking control of more than 10% of the casino company, Icahn is now obligated to obtain a gaming license in Caesars’ home state of Nevada. It wouldn’t be the first time he has held a license and, given his position in the community, he shouldn’t have any difficulty in seeking approval for a new license.

The potential sale of Caesars is coming more into focus each day. Icahn, as well as others, has asserted that the best course of action for the company would be for it to find a new owner and Icahn purchased, and increased, his stake in order to help push the issue further. He said last week that “the best path forward for Caesars requires a strategic process to sell or merge the company” and that it would “further develop its already strong regional presence.”