Nvidia Q3 FY27 guide as the gate for the AI-capex supplier chain and the Nasdaq-100's 50-day AI-capex supplier chain Hyperscaler capex compounding AI spend 1-2Q historical lag AI suppliers data-center revenue market's live test Nvidia Q3 FY27 guide guide vs consensus threshold guide at/above consensus 50-day chain stays bid index holds 50-day guide below consensus 50-day chain de-rates index breaks 50-day guide below → de-rate = demand event, not a rates/beta washout