Thursday marked Delta Air Lines return to the New York Stock Exchange, after the carrier earlier this week officially emerged from bankruptcy. That day, Delta executives rang the opening bell from its check-in lobby at Hartsfield-Jackson Atlanta International Airport and also rang the closing bell from the NYSE podium that overlooks the trading floor. CEO Gerald Grinstein, who is expected to step down as head of the airline at the end of the month, expressed his confidence in the company by purchasing 1,000 shares of Delta stock, which trades under the ticker symbol "DAL." Delta emerged from bankruptcy on Monday, following a 19-month restructuring plan that included job cuts, a renewed focus on international routes and an unsuccessful takeover bid by US Airways.