Billionaire investor Bill Ackman said on Monday that he raised his stake in real estate company Howard Hughes, realizing a long-held dream of creating a diversified holding company modeled after legendary investor Warren Buffett’s Berkshire Hathaway.

Howard Hughes Holdings, The Woodlands-based real estate development and operating company, on Monday sold 9 million new shares to billionaire investor Bill Ackman's Pershing Square. The $900 million transaction,

(Reuters) -Billionaire investor Bill Ackman's Pershing Square Capital Management will buy 9 million newly issued shares of real estate developer Howard Hughes Holdings for $900 million, the companies said on Monday.