Since Delta has placed an order for the Bombardier CSeries aircraft, Bombardier shares have not gained a lot. The order did create some momentum, but shares soared on the rumors of an order rather than the actual order.
The order itself is welcome and does have an important meaning to Bombardier, besides filling a big number of delivery slots. The order pushed the CSeries backlog beyond the 300-units mark and made Delta the first major airline in North America to back the CSeries aircraft. AeroAnalysis considered the North American backing to be most valuable to Bombardier since Republic Airways, another North American airline, did not seem to be willing to operate the CSeries after filing for bankruptcy.
Before the Delta order for 75 units, Republic Airways was actually the biggest customer with 40 CS300s on order and options for another 40.
In the past few days, some clarity has been given regarding the Republic Airways order that AeroAnalysis considers likely to be scratched from the CSeries order book. Bombardier has removed the Republic Airways order from the production plan, but still does list the orders as firm orders and said it is still working with Republic.