Calix is trading 31.86% up at $52.88 in after-hours trading, with no new company-specific announcement found.
- Calix closed at $40.10 on August 21, 2026.
- The Nasdaq Composite rose 1.82%, but broader gains do not fully explain the unusually large move.
- Recent official releases concerned CoastConnect and utility-market products; earlier quarterly results, including lowered third-quarter guidance, were already public.