History Says Investors Should Listen to Warren Buffett: The S&P 500 Is on the Verge of Doing Something for the First Time in 155 Years as Investors Buy "Nothing But Hope."

This kind of tape usually rewards balance-sheet quality over narrative. When index-level valuations get stretched, the market stops paying for optionality and starts paying for self-funding cash flows, which is why BRK.B and other cash-rich compounders tend to hold up better than high-duration growth even if they don’t lead on upside. The hidden risk is concentration: if a handful of mega-caps keep doing the heavy lifting, passive flows can delay the unwind but also make the eventual drawdown faster and more mechanical.

The first-order losers in a valuation reset are names where the equity story is still outrunning near-term monetization, especially NVDA and NFLX if multiple expansion stalls before earnings catch up. A softer second-order effect is on capital markets activity: NDAQ can benefit if volatility spikes and hedging volumes rise, but that tailwind is usually temporary and can be outweighed by weaker IPO/M&A fees over 1-2 quarters. AAPL and GOOGL are better insulated because their cash generation gives them buyback support and less dependence on external capital.

The consensus mistake is treating overvaluation as a timing signal rather than a regime filter. This can persist for months unless real yields rise, breadth deteriorates, or earnings revisions roll over; absent those catalysts, the market can remain expensive and trend higher. The right posture is hedged participation: own quality, reduce exposure to the most rate-sensitive duration names, and keep dry powder for any forced-selling window.