Goldman Sachs Strategists: Beware of U.S. stocks with "high valuations, high concentration, and high gains," as they have historically often ended with sharp declines.

Goldman Sachs Strategists: Beware of U.S. stocks with "high valuations, high concentration, and high gains," as they have historically often ended with sharp declines.

```

Although Goldman Sachs maintained its optimistic forecast in the latest outlook that US stocks will continue to rise to 7,600 points in 2026, its strategists simultaneously issued a stern warning, pointing out that current US stock valuations and concentration structures resemble the characteristics seen before several major crashes over the past century.

On Wednesday, January 7, Goldman Sachs' new Chief US Equity Strategist Ben Snider released his 2026 outlook report. In the report, he predicted that driven by US economic growth and the Fed’s continued accommodative policy, the S&P 500 Index will achieve a total return of 12% in 2026, with a year-end target of 7,600 points.

Snider noted that of the S&P 500’s 16% price return in 2025, earnings growth contributed 14%. He expects that with productivity improvements driven by AI adoption, S&P 500 earnings per share (EPS) will grow 12% in 2026 and 10% in 2027, which will provide a fundamental basis for a continued bull market. However, behind this seemingly optimistic report, Goldman Sachs detailed the structural vulnerabilities the market faces.

Valuations and concentration approaching historical extremes, market vulnerability increases

Goldman Sachs strategists warn that the core tension in the US stock market lies in the contradiction between a “solid fundamental backdrop” and “valuation multiples near historical highs.”

  • High Valuations: Currently, the S&P 500’s forward price-to-earnings ratio (P/E), based on expected earnings per share for the next twelve months, stands at 22 times. This level matches the peak in 2021 and is just one step away from the all-time high of 24 times seen during the 2000 dot-com bubble. Snider admits that such high multiples increase the extent of market declines if earnings fall short of expectations.
  • Extreme Concentration: The top ten stocks in the S&P 500 now account for 41% of the market capitalization and 32% of earnings. In 2025, these leading stocks contributed 53% of the index return. Goldman Sachs points out that as concentration increases, the embedded idiosyncratic risk in the S&P 500 and investors' reliance on continued strength of the largest companies also rises.

Snider used physics terminology to describe the current situation: “Valuation and concentration are measures of ‘potential energy’, which require a catalyst to turn into the stock market’s ‘kinetic energy’ (i.e., decline).” He emphasized that the current combination of “high valuations, extreme concentration, and recent strong returns” in US stocks is similar to several overheated markets in the past century.

These characteristics have appeared to varying degrees in the boom of the 1920s, the Nifty Fifty-dominated period in the early 1970s, the bull run before Black Monday in 1987, as well as the markets in 2000 and 2021.

A common aspect of these historical periods is that they all ultimately ended with “significant equity market declines.” Goldman Sachs clearly warns that there is a risk the current market could experience a similar correction, which is exactly where the current debate about whether a “bubble” exists is focused.

Capital flows not yet frenzied, bonds and money market funds favored

Despite concerns over market structure, Goldman Sachs also pointed out a key difference between the current market and previous bubble periods: investor sentiment and capital flows have not reached extreme levels of mania.

  • Speculative Activity: Although speculative trading activity surged sharply in 2025, it was still far below the peaks seen in 2000 or 2021.
  • Capital Flows: Last year, US equity ETFs and mutual funds collected about $100 billion in inflows, accounting for just 0.2% of the S&P 500’s market capitalization, and ranking only at the 45th percentile over the past 20 years.
  • Risk Aversion: In contrast, US bond funds received about $700 billion in inflows, and money market assets expanded by over $900 billion.

Goldman Sachs' Snider believes that these relatively restrained capital flows indicate that, despite the market being at historic highs and frequent discussions about bubble risks, there has not been an occurrence of extreme irrational exuberance.

AI capital expenditure surges, future profit returns face major test

Leaving aside macro factors, Goldman Sachs considers the key micro risk at present to be the trajectory of AI capital expenditures (Capex) and their return on investment.

  • Surging Spending: In 2025, the largest publicly listed hyperscale tech companies will have a combined capital expenditure of about $400 billion, up nearly 70% from 2024 and 150% higher than the pre-ChatGPT spending level in 2022.
  • Debt Dependence: It is expected that this year’s AI investments will continue to grow, with capital expenditure projected to reach 75% of cash flow—a ratio similar to tech spending in the late 1990s. Future spending growth will increasingly rely on debt financing.
  • Profit Gap: Over the past decade, profits for these large tech firms have typically been 2–3 times their past capital expenditures. Given the market's general expectation of an annual average $500 billion in capital expenditures from 2025 to 2027, to maintain the historically expected rate of capital returns, these companies would need to achieve an annual profit run rate of over $1 trillion. However, current consensus profit estimates for 2026 are only $450 billion.

Nevertheless, Snider remains optimistic at the end of the report, writing:

As investors enter 2026, they are expected to receive considerable beta and alpha returns. For index investors, the relatively low implied volatility and credit spreads give them tools to control downside risk while maintaining exposure to equity upside. Within the equity market, a dynamic macro environment, large valuation differences, and low correlations will create ample opportunities for stock pickers.

 

Risk Warning and DisclaimerThe market has risks, and investment should be cautious. This article does not constitute personal investment advice, nor does it take into account individual users’ specific investment goals, financial situation, or needs. Users should consider whether any opinions, views, or conclusions in this article are suitable for their particular circumstances. Investment based on this article is at your own risk. ```