Atlas Air Worldwide Holdings and Boeing Co. announced Tuesday a deal to convert nine 767 wide-body passenger planes into converted freighters, up from an order of four planes previously-announced in July. In May, Atlas Air had announced a deal to provide air cargo services to Amazon.com Inc. , including the operation of 20 767 freighters. Atlas Air's stock, which was still inactive in premarket trade, has gained 3.8% year to date, while the NYSE Arca Airline Index has climbed 6.9% and the S&P 500 has gained 5.9%.
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