The Philadelphia Semiconductor Index (SOX) plunged ~10.3% on Friday June 5, its largest single-day percentage drop since March 2020, erasing well over $1 trillion (estimates ~$1.3T) in market value. The rate spike after the hot jobs report combined with lingering disappointment over Broadcom's failure to raise its FY2027 AI guidance to trigger a sector-wide de-rating. The SOX has no sec.<ticker> instance in the securities baseline - aboutSecurity omitted.