FOX BUSINESS LIVE. VIX LAST TRADES. ARCH RAO, SPAN FOUNDER & CEO. THE BACKYARD MINI DATA CENTER. SPAN'S XFRA USES UNTAPPED HOME ENERGY FOR A.I. COMPUTE. NASDAQ COMPOSITE 26,307.07, down 337.84, -1.27%. Silver is at 63.92, down 2.31, -3.49%. Churchill Downs Inc (CHDN) 88. The segment features Arch Rao discussing Span's XFRA, a device that functions