PSI is trading 12.05% lower at $140.86, with no company-specific announcement or confirmed after-hours catalyst identified.
- PSI closed the regular session at $160.12 on October 5, 2026, before the sharp after-hours decline; this follows a recent run of higher closes.
- PSI tracks semiconductors. Available news points to earlier chip-sector weakness but does not establish it as the cause of this unusually large move.
- The broader market was risk-on and does not appear to explain the decline.