If a Stock Market Crash Is Coming, Here's the 1 Thing You Shouldn't Do, According to History

The article flags elevated U.S. equity valuations, citing S&P 500 cyclically adjusted P/E (CAPE) of 41 near an all-time high (44 in 2000) and a Buffett indicator at ~240% of GDP, implying the market is highly overvalued. It argues a crash is plausible sooner than later based on historical parallels, but stresses long-term holders should avoid selling great stocks too early. Overall, the piece is cautionary/defensive rather than a catalyst likely to move broad markets immediately.

Analysis

This is less a tradable macro shock than a positioning warning: when valuation anxiety becomes a headline, the first-order effect is usually factor rotation, not an immediate index break. The market mechanism to watch is duration—if real yields stay sticky, the highest-multiple earnings streams get de-rated fastest, while cash-rich compounders with active buybacks absorb flow on dips.

The cleanest relative winners are balance-sheet strength and self-funded capital return: BRK.B is a natural parking place if investors want equity exposure without paying peak-duration multiples. AAPL is more nuanced; it can act defensively versus the most crowded AI names because of repurchase support, but it still trades like a mega-cap bond proxy and can underperform in any de-risking wave.

The weakest links are the names most dependent on perpetual multiple expansion and retail momentum, with NVDA the obvious stress point if earnings beats stop exceeding already-lofty expectations. If the market starts to discount a slower monetization curve, the downside is not about fundamentals collapsing; it is about expectations compressing from extreme to merely high. That tends to show up first in 1-3 month factor rotation before any 6-18 month fundamental reset.

Contrarian view: the consensus is too eager to call for an imminent crash. In a market dominated by passive inflows, buybacks, and a handful of mega-cap balance sheets, expensive can remain expensive for longer than bears can stay solvent. The thesis is falsified if real yields roll over and breadth improves while earnings revisions remain positive; in that case, valuation concern becomes a reason to trim size, not short the tape.

Key Decisions for Investors

• Use any further rally in NVDA to reduce gross or buy put spreads into the next 30-60 days; the risk/reward favors paying for protection rather than chasing downside because the first move is likely multiple compression, not a collapse in revenue.
• Relative-value: long BRK.B / short NVDA as a 1-3 month hedge against valuation dispersion; target is modest outperformance from lower duration risk, with the trade invalidated if 10-year real yields fall sharply and AI leadership broadens.
• If you need equity exposure, rotate toward AAPL over higher-beta growth baskets on a 3-6 month horizon; the position is lower volatility, but cut it if services growth slows or buyback support meaningfully decelerates.
• Avoid adding to small-cap/speculative growth names on strength; treat them as the most vulnerable factor exposure if the market enters a de-risking phase over the next 4-8 weeks.
• Set an alert on 10-year real yields and forward EPS revisions: if yields remain above recent lows and revisions flatten, fade index-level risk-on rallies; if both improve, stand down from bearish hedges.