** Shares of real estate developer Howard Hughes Holdings HHH.N soar around 13% to $75.99 in premarket trading
** Billionaire investor Bill Ackman's Pershing Square to buy 9 million newly issued shares in HHH for $900 million
** Post transaction, Pershing Square will own 46.9% of HHH's outstanding shares
** Ackman named executive chairman of Howard Hughes; HHH CEO David O’Reilly to continue in the role
** Stock down ~12% this year, as of last close
(Reporting by Sameer Manekar in Bengaluru)
((Sameer.Manekar@thomsonreuters.com;))