WS #12582

The dominant signal in this window is Super Micro Computer's (SMCI) after-hours surge on a preliminary business update showing Q4 gross margins of 15-17%, well above the prior 8.2-8.4% guidance, and record $60B in new orders. This is corroborated by CNBC, SeekingAlpha, and multiple social sources. The SMCI news is lifting AI server peers Dell (DELL) and Hewlett Packard Enterprise (HPE) in sympathy, while Nvidia (NVDA) remains flat, suggesting the move is company-specific rather than sector-wide. Separately, Iran's top military command warned that any US attack on its nuclear sites would be considered an 'expansion of war' and that all US and allied interests in the region would be targeted. This escalation rhetoric, reported by multiple sources, adds to geopolitical risk and supports elevated oil prices. The White House is also preparing to impose fresh global tariffs by Friday, per a SeekingAlpha report, which could reintroduce trade uncertainty. Alaska Air (ALK) reported Q2 earnings that beat on EPS but missed on revenue, with Q3 guidance well below consensus, sending shares lower after hours. Ukraine's military leadership shift (Syrskyi replaced by Drapatyi) is notable but unlikely to have immediate market impact. The overall narrative is one of mixed signals: strong AI demand driving SMCI and peers, but geopolitical and tariff risks persisting.