Lumentum is trading at $855.83, up 4.05%, amid strength in AI and optical-related stocks; no fresh company-specific catalyst has been identified.
- Shares were already higher after hours on October 20, also without a direct catalyst established.
- In the supplied market context, the Nasdaq is up 0.66%, the S&P 500 is up 0.25%, and the Dow is up 0.06%, pointing to sector strength rather than a clearly identified company announcement.