Warren Buffett sounds alarm as stock market warning returns for only second time in 155 years

Warren Buffett’s caution comes as the S&P 500’s CAPE ratio approaches levels seen only during periods of extreme valuations. While elevated readings can signal weaker long-term returns, they do not predict near-term crashes. Buffett’s investment philosophy instead emphasises economic moats, durable cash flows and businesses capable of compounding across market cycles.