If a Stock Market Crash Is Coming, Here's What Warren Buffett Would Do to Stay Ahead

The article warns that elevated valuations and AI-driven enthusiasm may leave the market vulnerable: the S&P 500's cyclically adjusted P/E is 41.8 versus a historical average of 17.4, while SpaceX is cited at a 68 price-to-sales multiple. Warren Buffett, now chairman emeritus after stepping down as Berkshire Hathaway CEO, has criticized speculative market behavior; Berkshire holds $365.5 billion in cash. The piece recommends Buffett-style caution and diversified exposure rather than chasing expensive AI stocks.

Analysis

The valuation signal is more useful for setting portfolio risk than calling a near-term top: elevated CAPE can coexist with further gains, while rising discount rates or weaker earnings would make long-duration growth multiples more vulnerable. The key transmission is AI capex payback. If hyperscalers cannot demonstrate returns, spending restraint could propagate quickly from data-center equipment demand into memory and other infrastructure suppliers; utilities may benefit only where load growth converts into funded, approved rate base and contracted returns—not simply from higher power demand. Conversely, sustained AI monetization would extend the spending cycle and punish premature shorts.

For AAPL, AMZN and GOOG, diversified cash-generating businesses may cushion downside versus concentrated infrastructure plays, but they are not insulated: AI investment can absorb cash otherwise available for buybacks or other uses. SNDK’s sharp run-up increases sensitivity to any order or pricing disappointment; that is a reason to monitor, not enough by itself to establish a short. Berkshire Hathaway’s cash optionality may support relative resilience in a selloff, but can lag if risk appetite and earnings momentum persist, and leadership transition remains a company-specific risk.

The contrarian point: valuation extremes are poor timing tools, and cash is not automatically a superior asset when equities keep compounding. Also verify the article’s SPCX listing, revenue disclosure and P/S denominator before using its valuation claim; the source alone does not establish those inputs. Near term, avoid an outright bubble call. Over 1–3 months, track hyperscaler capex guidance, infrastructure orders and earnings revisions; over 6–18 months, the decisive test is realized AI returns versus cumulative investment.

Key Decisions for Investors

• Prefer a relative-risk tilt over a broad-market short: consider BRK.A versus a US growth benchmark as a defensive expression, sized modestly. Thesis fails if Berkshire materially underperforms through a sustained earnings-led rally or if its cash position and capital deployment prove less advantageous than expected.
• Do not chase SNDK after its outsized move; keep it on a watchlist and reassess on memory pricing, order trends and guidance. A meaningful deterioration in those indicators would strengthen a short thesis; continued tight supply and upward revisions would invalidate it.
• For AI exposure, favor diversified AAPL, AMZN and GOOG over concentrated infrastructure risk only after checking current valuation and capex trends. Reduce that relative preference if hyperscaler AI monetization accelerates enough to support higher investment returns.
• Treat index protection as conditional, not an automatic purchase: consider a defined-risk put spread only if portfolio drawdown exposure is high and option pricing is reasonable. Revisit after earnings and capex updates; do not infer an imminent crash from CAPE alone.
• Verify SPCX’s listing status, disclosed revenue period and P/S calculation before trading against the article’s valuation claim; until confirmed, treat it as an alert rather than a position signal.