Why Is Park Aerospace ($PKE) Stock Down -10.01% Today? (Find out why any stock moved today on Tickeron.) Park Aerospace (PKE) shares fell roughly 10% in Friday trading, with the stock changing hands around $26.69 after closing the prior session at $29.66. The decline came despite a second-quarter earnings and revenue beat, as investors focused on a lowered full-year forecast for the company's GE Aerospace jet engine program sales. Management trimmed its fiscal 2027 GE engine program sales outlook to a range of $32 million to $35 million, citing a more conservative view of customer build plans. Strong missile-systems momentum — including PAC-3 MSE Patriot interceptor demand — offered a bright spot but was not enough to offset guidance concerns. $DCO $AIR $ATRO