Virgin Galactic Holdings Inc. (NYSE: SPCE ) has been one of the most explosive trades of the spring, surging more than 165% over the past month and turning short sellers into reluctant spectators as retail momentum builds ahead of a critical commercial launch window. SPCE stock is racing higher. Watch the price action here. The Catalysts The stock climbed from $2.47 on May 20 to as high as $6.18 by May 29 — a move that played out in nine trading days and caught many bears off guard. The catalyst