11月5日巴菲特指数报221.95%，前一日明显回落，刷新7月以来新低，不过大周期来看，仍处于严重高估区间。标普500指数股权风险溢价（ERP）为5.75%，刷新4月以来新高，处于相对中性区域。综合两项指标，从大周期来看，美股投资性价比相比美债整体偏低。

Airbnb (ABNB.O) rose 11.6% in premarket trading after the company raised its annual revenue growth guidance.

Counterpoint Research's Q3 2026 global memory tracker says AI accelerators, data-center demand and rising prices lifted DRAM revenue in Q3 2026 to nearly 5x year-earlier levels, approaching $200 billion. DRAM bit shipments grew only about 4%, indicating the upcycle is price-driven rather than shipment-driven. Counterpoint says AI has turned memory from a commodity into a scarce, high-value resource, and buyers are now competing for supply rather than price. With prices still rising, suppliers are expected to set new profit highs next quarter.