PSI is trading at $125.78, down 1.63% in after-hours trading, with the reason for the decline unclear. - No verified company-specific announcement or late-breaking catalyst was found to explain the move. - Semiconductor news described renewed AI-demand optimism after Anthropic’s IPO filing, supporting chip stocks during regular trading. - That broadly positive sector backdrop does not explain PSI’s opposite-direction after-hours move; the earlier rally should not be treated as its cause.