CORRECTED-UPDATE 1-Travelport's IPO values Blackstone-backed firm at $1.9 bln (Sept. 11)

(In the Sept. 11 story, corrects paragraph 1 to say Travelport Worldwide is a booking and transaction platform provider for the travel industry, not an airline ticketing company. Also, corrects paragraph 5 to say Travelport has a stake of less than 1 percent in Orbitz, not 37 percent)