Overview
- U.S. equities have delivered multi-year gains led by AI-related names, leaving the S&P 500 on pace for another strong year and valuation gauges such as the Shiller CAPE near their second-highest levels on record.
- A small group of AI winners, including large incumbents, account for a large share of market gains while many smaller or unprofitable AI firms trade at very high forward price multiples or lack profits.
- Rising Treasury yields and a recent Federal Reserve interest-rate increase have increased pressure on corporate borrowing costs and make it harder for high-valuation companies to justify stretched prices.
- Market commentators warn that investor behavior, excess capital spending on AI projects and oversupply risks could mirror patterns seen in the late-1990s dot‑com boom and lead to sharp losses for speculative names.
- Advisers recommend defensive steps such as diversifying away from concentrated AI bets, trimming exposure to high-forward‑P/E small caps, and adding lower-volatility holdings to manage downside risk.