Park Ha Biological Technology is trading at $2.37, up 6.04% after-hours versus the provided October 16 regular-session close of $2.20; no clear catalyst was identified. - No confirmed October 16 company-specific announcement was found; available company headlines concern older initiatives, including a June partnership. - The broader market sold off, with the Nasdaq down 2.1% and S&P 500 down 1.1%, but that does not explain the after-hours gain. - No reliable after-hours volume was identified.