Viavi Solutions is trading 3.67% up at €31.36, moving with the broader technology and semiconductor rally on September 21, 2026.
- AI infrastructure optimism, stronger chipmaker performance, lower oil prices, and declining Treasury yields supported risk appetite across growth stocks.
- Viavi’s ECOC 2026 data-center testing showcase provided supportive industry context, but no new company-specific catalyst directly explaining the move was identified.