A Caesars shareholder may top the 10% level.

New York investment adviser Martin T. Sosnoff, largest shareholder (9.5%) of Caesars World, the Los Angeles-based casino operator, said in a filing with the SEC that he filed a required 30-day notice to federal antitrust agencies Tuesday that he intends to increase his stake above 10%. Sosnoff disclosed that he has asked Caesars to consider him for election to its board. Chairman Henry Gluck said he told Sosnoff that “we will take it under consideration.” Sosnoff’s filing also said that he might in the future propose changes in management or other actions to enhance his investment’s value but that he has no current plans for doing so.