SOXX is trading at $556.79 (-1.58%) as stronger-than-expected September U.S. PMI data lifted the 10-year Treasury yield above 5.1%. - The yield reached its highest level since 2007. - Higher yields increase discount rates for growth-oriented semiconductor companies and intensified expectations for additional Federal Reserve tightening. - The Philadelphia Semiconductor Index fell approximately 1.2%, while broader technology shares declined.