Garmin is trading 20.61% down at $246.08 after an unusually sharp after-hours decline from the August 12, 2026 regular-session close of $309.95.
- No credible August 12 company-specific announcement, earnings release, guidance change, or late-breaking news was found to explain the move.
- Garmin’s latest reported quarter showed strong results and raised full-year guidance; the broader market was modestly higher.
- The move appears unconfirmed or potentially anomalous and requires re-checking.