Costco Wholesale (COST) — as of October 21, 2026

Anchor event. The one catalyst clearly inside the last ~1–3 months is Costco's fiscal Q4 2026 earnings release, issued after the market close on September 24, 2026 — a 16-week quarter and fiscal year ending August 30, 2026 [2], [6]. (The earlier fiscal Q3 2026 report of May 28, 2026 falls outside the 1–3 month window but offers trailing context [13], [18].)

Recent catalysts (last ~1–3 months)