The SIA Aerospace and Defence sector showed strong performance in 2024, driven by geopolitical tensions, but signs of slowing momentum are now emerging, with key stocks like Leidos Holdings (LDOS) facing resistance and negative quarterly performance. While speculation around factors like potential geopolitical de-escalation may exist, at SIA, the focus remains on rules-based analysis, and the relative performance of the sector is raising red flags. Leidos, in particular, is showing signs of weakness, with its recent pullback from resistance and a shift to the ‘Unfavored’ zone in SIA reports.