UBS downgrades Virgin Galactic to sell after flight delay, says stock will fall another 25%

Sir Richard Branson speaks after he flew into space aboard a Virgin Galactic vessel, a voyage he described as the "experience of a lifetime" and one he hopes will usher in an era of lucrative space tourism at Spaceport America, near Truth and Consequences, New Mexico on July 11, 2021.
Patrick T. Fallon | AFP | Getty Images

Another flight delay for Virgin Galactic is weakening the bull case for the space exploration stock, according to UBS.