---
type: commentary-event
status: draft
date: 2026-08-25
tickers: [NEM]
sectors: [Materials]
themes: [data-quality]
event_ids: [2025-08-25_NEM]
usable: false
TEST-DATA: synthetic-seed
---

# Event note — NEM +44% single-day move (2025-08-25)

**Synthetic seed.** Flagged by the mover monitor; volume check shows no
corresponding volume expansion — pattern matches a price restatement/split
artifact in the vendor data, not a market event. Routed to data-quality review;
excluded from narrative drafting. Plausibility gate working as intended.