Spirit Airlines stock jumped in premarket trading after the budget carrier raised its guidance and said that its proposed acquisition by JetBlue Airways remained in effect and that it was looking to refinance its debt. In an [investor update](https://ift.tt/pOrqXK0), Spirit said fourth-quarter revenue is expected to be at the high end of initial guidance due to strong bookings for the Christmas and New Year peak travel period. + It disagreed with a court ruling [preventing its acquisition by Spirit](https://ift.tt/B6HjYEa), saying the deal remained in "full force."
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