Costco Wholesale stock (COST) is trading at premium multiples compared to the rest of the S&P 500 (^GSPC), similar to Nvidia (NVDA). JonesTrading Chief Market Strategist Michael O'Rourke and Yahoo Finance senior markets reporter Ines Ferré weigh in on how much further the market may have to run, referencing recent trends in precious metals commodities. Also watch Michael O'Rourke share his perspective on the AI bubble heading into 2026, while EMJ Capital founder Eric Jackson compares Nvidia with his so-called pizza and retail bubbles risks. To watch more expert insights and analysis on the latest market action, check out more Morning Brief.