Share of Jasper Therapeutics Inc. soared more than 500% Tuesday morning after it reported positive results from a treatment it has developed for bone marrow transplants.
The Redwood City company's stock rose as high as $3.80 a piece, the first time it has traded above $1 since late in September (Nasdaq:JSPR). It was warned by Nasdaq on Nov. 3 that it faced possible de-listing from the exchange if it didn't get its stock back above $1 by May 2.
Despite the New Year's jump, Jasper's stock has lost…
