Imperial Capital analyst Michael Derchin started Allegiant Travel with an Outperform rating and $164 price target. The company's "differentiated, low cost business model with strong growth prospects" is not fully reflected in current equity values, Derchin tells investors in a research note.

Travel + Leisure Co. (TNL) and Allegiant (ALGT) "announced a multi-year marketing agreement, allowing both companies to grow their customer engagement through cross-company promotion. The two travel companies will share promotional offerings to each other's customers, providing offers to a broad spectrum of travelers. Allegiant, with more than 15 million Allways Rewards members, and Travel + Leisure Co., with more than 800,000 vacation ownership members and 3.5 million vacation exchange members, will each benefit from a highly engaged base of travelers."