York Space and Firefly Are Riding SpaceX's Coattails. Smaller Space Stocks Post Strong Gains.

Last Wednesday was a great day to be a space investor. (Thursday and Friday, somewhat less so!)Rumors that SpaceX would file its IPO prospectus, which turned out to be false, set space stocks on fire. Shares of recent space IPOs York Space Systems (YSS 2.86%) and Firefly Aerospace (FLY 0.38%) shot up 5.1% and an astounding 16%, respectively, on Wednesday. The enthusiasm didn't last long, however. By Thursday, York had given back all of Wednesday's gains. (York did begin rising again Friday, however.) Firefl ...