US equities opened higher on August 21, with the Dow up 0.5%, S&P 500 up 0.4%, and Nasdaq up 0.4%; Micron's CEO said customer demand exceeds supply by ~50%, Broadcom announced a $60B+ debt financing plan for AI chip infrastructure, and Chinese ADRs KE Holdings and NetEase rose 4.9% and 4.4% respectively.
Micron's demand-exceeds-supply signal and Broadcom's large AI infrastructure financing point to continued spending growth in the chip and AI sector, which carries meaningful weight in the Nasdaq. Chinese ADR gains add a separate lift from China-linked names listed in the US.