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10 Themes - #9: When things look great, be careful

10 Themes
CIO Special
Equities
Multi Asset

11/19/2024

In Theme #9 we look at the increasing cluster risks following Trump's election victory  

Banner image of Big tech

From January 20, 2025 the U.S. will be governed by Donald Trump again. And to a certain extent, the rest of the world will be co-governed by him, especially the capital markets.[1] If his first term is any guide to the future, this is likely to increase event risk for individual asset classes – for example, if another punitive sector tariff is suddenly announced by tweet. However, other risks are also looming for the markets in 2025. An escalating conflict in Taiwan that may disrupt chip supply chains. A potential end to the bond markets’ patience with the U.S. debt mountain. A damp ending to the boom. And these are just a few of the foreseeable risks. However, it is the unexpected that may pose the greatest market risk.[2] 

The biggest firms are getting bigger  

%

Bar chart with 7 bars.
The chart has 1 X axis displaying categories.
The chart has 1 Y axis displaying values. Data ranges from 18.55 to 36.53.
End of interactive chart.

Sources: Bloomberg Finance L.P., DWS Investment GmbH as of 11/12/24  

Investing in a broadly diversified stock index – whether the S&P 500 or the – might seem to reduce the risks but there is another risk: excessive concentration in many asset classes. The ten largest stocks in the account for a full 37% of its market capitalization, an all-time record. Even at the height of the internet bubble in early 2000, it was less than 30%. But even then, only five of the top ten stocks were tech stocks.[3] Today, nine out of ten are.[3] This means that anyone who believes they have the entire U.S. economy covered by buying the S&P 500 index is in fact putting a third of their money in just nine companies in the same sector. That is called cluster risk. It doesn't get any better when you look at the global picture. Even though the U.S. economy only accounts for around a quarter of global , roughly two-thirds of the trade in and market value of bonds and shares are attributable to the U.S. Of the ten largest listed companies, only two are not American. In 2010, seven were not American.

Of course, there are examples of high concentration elsewhere – in Germany’s index, the three largest companies account for almost a third of the market value. But the global dominance of the U.S. stock exchange, and its dominance by a few tech stocks, is a major concern. Goldman Sachs has even cut its average return expectation for the S&P 500 over the next ten years from 7% to 3% for this reason.[4] History, too, suggests that today's top 10 will not be the top 10 in 10 years. Concentration risk may be hedged either by choosing the equally weighted S&P or by weighting other regions higher. However, this is only half the battle. If the 60% price increase[5] of the MSCI World in the last two years makes you dizzy, you may want to diversify outside equities. We currently consider this attractive because bonds are yielding a decent amount. Should the stock markets fail to achieve the growth rates they are currently pricing in, interest rates are likely to fall and bond prices to rise. If you believe government bonds do not offer enough yield, corporate bonds are another option. However, for bonds, in particular, when are rising again, a broad selection of securities may help reduce the risk posed by individual holdings.[6] Those who are more concerned about a resurgence in could diversify into commodities or gold.

The temptation to bet on the exact same bundle of securities that have dominated the stock markets for several years is understandably strong - especially as their run could continue if their earnings grow sufficiently and investors remain willing to pay a premium for growth stocks in a low-growth world. But a time of such dominance is precisely the moment when you may want to hedge and diversify. A of almost 30 for the S&P 500 Information Technology sub-index is ambitious and does not leave room for many surprises.[7]  And under President Trump surprises shouldn’t be a surprise. “Under our core scenario we have a positive outlook for most asset classes in 2025. Still, to help avoid unpleasant surprises, a broadly diversified portfolio across many asset classes, investment styles and is a good choice”, says Henning Potstada, DWS Head of Multi Asset.

When things look great, be careful
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