PSI is trading now at $129.43, down 4.82%, with no reliable company-specific announcement or late-breaking catalyst found to explain the after-hours decline.
- It closed at $136.00 on September 4, 2026, following a 4.86% regular-session gain.
- Semiconductor shares strengthened broadly during regular trading after stronger global semiconductor sentiment, but that trend does not clearly explain the subsequent after-hours reversal.
- The move appears isolated; a re-check for delayed news is warranted.