York Space Systems is trading 5.7% higher at $6.05 after-hours, with no clear company-specific announcement explaining the gain. - The stock closed at $5.73 on October 20. - Company-related headlines included investor-law-firm alerts about the pending securities class action and the October 30 lead-plaintiff deadline, not a positive company catalyst. - On October 20, the Nasdaq rose 0.94% and the Dow gained 1.04%; that may offer supportive context but does not establish the cause of the after-hours move.