Supermicro's Q4 Gross Margin Forecast Leaps to 15%–17%, Crushing Prior Guidance

Supermicro's July 21 preliminary update pegs Q4 FY2026 gross margin at 15%–17%, versus prior guidance of 8.2%–8.4% — a gap of roughly 700–860 basis points (each basis point equals one-hundredth of a percent). Recent quarters ranged from 6.3% to 9.9%. The company didn't explain the revision. Final results are pending.