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Julius Bär: Er S&P 500 overvurderet?

Oscar M. Stefansen

fredag 22. august 2025 kl. 11:27

Resume af teksten:

S&P 500’s valuation commonly uses metrics like the Price-to-Earnings (P/E) ratio, indicating potential overvaluation if high. The CAPE ratio, which averages earnings over 10 years, suggests the market is overvalued compared to historical norms. Another method, the Discounted Cash Flow (DCF) model, evaluates future cash flows’ present value, hinting at overvaluation if current levels exceed intrinsic value. The S&P 500 historically averages 10% annual returns, with fluctuations due to economic conditions. Recent recoveries followed the 2020 pandemic drop. Factors impacting valuation include earnings growth, interest rates, inflation, market sentiment, and monetary policy. Analysts debate its current overvaluation, citing high CAPE and P/E ratios, though tech-driven growth and low interest rates may justify these levels. For investors, overvaluation hints at potential corrections, but long-term growth remains possible with diversification and strategies like dollar-cost averaging.

Fra Julius Bär:

How is the S&P 500 valued?

The valuation of the S&P 500 is often assessed using several key financial metrics, with the Price-to-Earnings (P/E) ratio one of the most common. The P/E ratio compares the index’s price to the earnings generated by the companies within it. A high P/E ratio indicates that the index may be expensive relative to its earnings, potentially signaling overvaluation.

Another metric is the Cyclically Adjusted Price-to-Earnings (CAPE) ratio , which averages inflation-adjusted earnings over the past 10 years. This measure helps smooth out short-term fluctuations and provides a longer-term perspective. Historically, the average CAPE ratio has been around 16–17, but in recent years it has risen above 30, suggesting that the market could be overvalued by historical standards. That said, the predictive power of the CAPE ratio has diminished over the last few years.

Another way to value the S&P 500 is by using the Discounted Cash Flow (DCF) model at an index level. This approach estimates the present value of future cash flows generated by the companies in the index. Analysts project the future cash flows of the companies in the S&P 500 and discount them back to their present value using a discount rate. By aggregating the estimated present value of the cash flows from all companies in the index, the DCF model provides an estimate of the intrinsic value of the S&P 500. If the current index level is higher than this estimated intrinsic value, it may suggest the index is overvalued.

How has the S&P 500 performed over the years?

The S&P 500 has delivered strong returns over the long term, with an average annual return of around 10% since its inception. However, these returns have been uneven, influenced by market cycles and economic conditions. For example, during the dot-com bubble of the late 1990s, the index surged, driven by speculative investments in technology stocks. The bubble burst in the early 2000s, leading to a significant market correction. Similarly, the 2008 financial crisis saw the index lose more than 50% of its value before it recovered, fueled by low interest rates and central bank interventions.

More recently, following the COVID-19 pandemic, the S&P 500 rebounded swiftly after an initial drop in early 2020. Thanks to government stimulus, low interest rates, and strong corporate performance—especially from technology firms—the index reached new highs shortly after. After a sharp valuation reset in 2022 due to higher rates, the S&P 500 has swiftly recovered in 2023 and beyond on the back of lower inflation and robust economic activity, particularly in the US.

What impacts the S&P 500’s valuation?

Several factors affect the valuation of the S&P 500:

Earnings growth : The profits generated by the companies within the index are a fundamental driver. Higher earnings can justify rising stock prices, while weaker earnings growth can signal that the index may be overvalued.

Interest rates : When interest rates are low, stocks tend to perform well as they become more attractive compared to bonds. Conversely, rising interest rates can put downward pressure on stock prices by making fixed-income investments more appealing.

Inflation : Above a certain level, high inflation tends to reduce corporate profits and consumer spending, which can negatively affect stock valuations. On the other hand, low and stable inflation tends to support higher stock valuations.

Market sentiment : Investor confidence and optimism can drive stock prices higher, even if the underlying fundamentals don’t fully support the valuation. Conversely, fear and pessimism can depress prices.

Monetary policy : Central banks, particularly the Federal Reserve, play a critical role in the stock market. Policies like low interest rates and quantitative easing have historically boosted stock prices.

Is the S&P 500 overvalued?

Currently, some analysts believe the S&P 500 is overvalued. The CAPE ratio, which is well above its historical average, suggests that the index is priced for perfection, meaning that investors expect strong future earnings and stable economic conditions. Additionally, the traditional P/E ratio has also been higher than historical norms, reinforcing concerns that stocks may be overvalued.

However, some argue that today’s high valuations are justified. The composition of the S&P 500 has shifted significantly in recent years, with tech companies like Apple, Amazon, and Microsoft—known for their high profit margins and growth potential—playing a larger role in the index. In this context, higher valuations might reflect these companies’ strong earnings prospects. Moreover, interest rates remain relatively low, making equities more attractive than bonds.

What does this mean for investors?

If the S&P 500 is indeed overvalued, this could signal caution for investors, as high valuations increase the risk of a market correction. A correction could occur if earnings growth slows or if macroeconomic conditions—such as rising interest rates or inflation—change. Investors might face short-term volatility and should be prepared for potential losses if the market adjusts downward.

On the other hand, some investors might take a longer-term view. Historically, the stock market has continued to grow despite periodic corrections. Investors who maintain a diversified portfolio and focus on fundamentally strong companies may still find opportunities for growth, even in an overvalued market. Additionally, dollar-cost averaging—investing a fixed amount at regular intervals—can help mitigate the risk of entering the market at an inopportune time.

The debate over if the S&P 500 is overvalued is complex and influenced by a variety of factors, including corporate earnings, interest rates, and market sentiment. While many indicators suggest that the market may be overvalued by historical standards, structural shifts in the economy and low interest rates provide some justification for these valuations. Investors should approach the market with caution, diversify their portfolios, and remain focused on long-term growth to navigate potential risks.

Past performance and simulations are not reliable indicators of future performance. Returns reflect all ongoing charges excluding transaction fees. All investments have inherent risks, and investors may not recover their initial investment. Returns may increase or decrease as a result of currency fluctuations.

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