POET Technologies is trading 10.19% up now at $8.60, supported by broader semiconductor and AI-stock strength.
- Extends its September 18 close of $7.80.
- No new company-specific announcement was identified for September 21, 2026.
- The semiconductor sector is up 2.62% and the Nasdaq Composite is up 1.88%, supporting a risk-on environment for AI-linked photonics companies.