Supermicro's Preliminary Q4 Gross Margin Jumps to 15%–17%, Far Above Prior Guidance of 8.2%–8.4%

Supermicro's July 21 preliminary update estimates Q4 FY2026 gross margin at 15%–17%, versus prior guidance of 8.2%–8.4% — a gap of roughly 700–860 basis points. Recent quarters ranged from 6.3% to 9.9%. The company did not specify what drove the revision. Final results are pending.