ABU DHABI - The Abu Dhabi Investment Authority (ADIA), one of the emirate's sovereign wealth funds, has bought 10.9 percent of Hyatt Hotel's class A shares, according to U.S. regulatory filings.

The purchase puts ADIA's total equity stake in the Chicago-based hotel chain at less than 3 percent.

In a filing with the U.S. Securities and Exchange Commission by Hyatt, ADIA bought 4.76 million class A shares, representing 10.9 percent of that stock.

In November Hyatt Hotels launched an initial public share offer on the New York Stock Exchange, offering 38 million class A shares at $25 a piece, raising $950 million for the controlling Pritzker family.

Abu Dhabi Investment Authority declined to comment on the report. (Writing by Amran Abocar; Editing by Greg Mahlich)