The Abu Dhabi Investment Authority (ADIA), one of the emirate's sovereign wealth funds, has bought 10.9 per cent of Hyatt Hotel's class A shares, according to US regulatory filings.

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

In a filing with the US Securities and Exchange Commission by Hyatt, ADIA bought 4.76 million class A shares, representing 10.9 per cent 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. – Reuters