Five charts sounding the alarm for stretched US markets
SPY•Five market measures point to stretched US stocks and bonds, including tech and AI stocks exceeding 40% of the S&P 500’s market value and a negative equity risk premium. The article says the signals raise questions about a possible inflection point, while strong AI-related profits and economic growth could sustain the rally.
1. Concentrated stock market
Tech and AI stocks account for more than 40% of the S&P 500’s market value, above the level at the dotcom bubble peak in early 2000. Including AI-related companies, tech’s footprint exceeds 50%. A shift in AI sentiment could trigger a correction, while investment payoffs could further strengthen the rally.
2. Narrower market gains
The equal-weighted S&P 500 is underperforming its market-cap-weighted counterpart by the widest margin in 24 years, a trend the article attributes almost entirely to tech and AI stocks. The equity risk premium—the gap between stocks’ earnings yield and the 10-year Treasury yield—is at a 24-year low and is negative.
3. Rising bond-market risks
The 30-year Treasury inflation-protected securities yield is nearing 3.40%, its highest since 2002. The term premium, the extra compensation investors demand for long-dated Treasuries over short-term debt, is rising sharply; the reasons remain uncertain.
