Goldman Sachs says market breadth in the S&P 500 has narrowed to its lowest level since the dot-com bubble, with the median stock sitting well below its 52-week high even as the index trades near record territory. The bank ties the divergence to rising interest rates and doubts over how long AI-driven profits can hold up, though it sees room for a rebound if macro uncertainty eases.
Goldman Sachs strategists, led by Ben Snider, flagged in a late September client note that market breadth in the S&P 500 has narrowed to levels not seen since the dot-com bubble. The index's headline strength hides a much weaker picture underneath.
The S&P 500 is up 14% in 2026 and sitting within roughly 1% of its August peak. Yet the median stock in the index is trading 16% below its 52-week high.
Breadth indicators echo the dot-com era
Goldman's U.S. Equity Sentiment Indicator has fallen to -0.9, matching the low watermark hit back in March 2026. Meanwhile, the forward price-to-earnings ratio for the S&P 500 has slid from 22x to 19x, landing right on the ten-year average.
Fewer than half of S&P 500 constituents are currently trading above their 200-day moving averages. Historical analysis shows instances of the index nearing all-time highs while sub-50% of stocks sit above their 200-day averages have been rare since 1990, and the handful of times it has happened clustered almost entirely between 1998 and 2000.
A warning months in the making
This isn't the first time Goldman has raised the alarm in 2026. Back in May, the firm's analysts noted a median shortfall of around 13% among S&P 500 stocks relative to their highs. By June, they observed that breadth had reached the 94th percentile compared to historical data, a reading that still fell below the extremes seen in 2000 but was firmly in cautionary territory. Rising interest rates and growing skepticism about the durability of AI-driven profits are the twin forces squeezing the broader market.
Goldman sees room for a rebound
Goldman's note did offer a sliver of optimism: the strategists suggested that a reduction in macroeconomic uncertainty could spark broader market advances and give underperforming stocks room to recover. The forward P/E compression from 22x to 19x tells us the market is already starting to price in some of this risk. The sentiment indicator at -0.9 suggests institutional investors are increasingly positioning for that scenario.
Source: Crypto Briefing
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