Looking at market history, we’ve seen that the best opportunities to buy come when pessimism is high, and the best times to sell arise when optimism runs too wild. Higher starting valuations typically lead to lower returns—and right now, the US market is showing signs of overheating.
Seth Klarman wisely said, “Bull markets climb a wall of worry,” where the cautious are left behind while the bold move ahead. However, bear markets often descend a mountain of overconfidence and hubris. It’s crucial for investors to maintain perspective, especially when others are blinded by optimism. By the time you realise you were overexposed to risk, the damage could already be done.
US stocks hit record highs after President Trump’s re-election, but his policies have raised global concerns. His tax cuts, potentially stimulating the economy by $8–10 trillion, could boost inflation and limit the Federal Reserve’s ability to adjust interest rates, especially as it battles services inflation.
After two robust years, the NASDAQ now trades at 40 times earnings—meaning investors are paying $40 for every $1 of earnings. That’s a steep price, signalling potential overvaluation.
Meanwhile, the S&P 500 trades at 26 times earnings, which matches its 20-year average.
But here’s a striking detail: the “Magnificent Seven” companies in the S&P 500 account for $16 trillion—nearly 35% of the index’s $46 trillion market cap and generated a return of 60.5% on average in 2024.
The dominance of a few players raises questions about broader market stability. Add to that the fact that US stocks now make up over 70% of the MSCI World Index. Are these levels sustainable?
The Shiller PE Ratio stands 37% above its 20-year average, suggesting a future return of just 2.2%. Similarly, the Buffett Indicator signals that expected returns will be flat, even with dividends.
Many argue that American exceptionalism justifies a premium, which is fair but the question remains: how much of a premium is warranted?
In comparison, the UK’s FTSE 100 trades at just 13.57 times earnings and the MSCI Europe index trades at around 15 times earnings.
During euphoria, typically valuations are sky-high, optimism reigns and fundamentals are often ignored — until the crash wipes out fortunes.
Unfortunately, many investors fall into the trap of extrapolating the past into the future, believing stock prices will keep climbing without considering the risks of change and unexpected shocks. As Howard Marks warns “Trees don’t grow to the sky.”
Of course, the future is far from predictable and we do not have the privilege to see it but time always reveals the truth.
Several factors point to caution: high valuations across major U.S. stocks, enthusiasm over technology, especially AI, Bitcoin and the belief that the largest companies will continue to dominate.
If these technologies don’t deliver, investors will be disappointed.
There’s also concern about automated index buying which could be inflating prices without regard to intrinsic value.
Nassim Taleb illustrates this risk with the story of a turkey. Every day, the turkey is fed, growing more confident in its fate—until one day, it’s slaughtered for our Christmas dinner. Markets may seem predictable until they suddenly shift.
In conclusion, timing the market is a difficult game and often leads to missed opportunities. But by staying patient, focusing on high-quality companies with strong fundamentals and avoiding the pitfalls of market timing and over-diversification, you set yourself up for long-term wealth and success. With that in mind, now may be the time to adopt a cautious approach, not an aggressive one.
Awet Ghirmay, Head of Investment Research
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Risk warnings
The value of investments and the income derived from them may fall as well as rise. You may not get back what you invest. This communication is for general information only and is not intended to be individual advice. You are recommended to seek competent professional advice before taking any action. All statements concerning the tax treatment of products and their benefits are based on our understanding of current tax law and HM Revenue and Customs practice. Levels and bases of tax relief are subject to change. This blog is based on my own observations and opinions.
