AAR is trading 4.7% down now at $111.75 after Guggenheim initiated coverage at Neutral, citing early weakness in global aircraft maintenance, repair, and overhaul demand.
- Guggenheim warned weakening passenger traffic could pressure airline MRO spending, weighing on commercial aviation aftermarket expectations.
- Major U.S. indexes are rallying on September 17, 2026, indicating company-specific pressure rather than broad market weakness.