Navigating market concentration as sustainable investors
One of the defining features of equity markets over recent years has been extremely high levels of index concentration, with the so-called “Magnificent Seven” making up around a third of the total market capitalization of the S&P 500.
And while we have previously seen similar levels of concentration, never before have we seen such high correlation between the largest players – for instance, at present, eight of the top ten largest constituents of the S&P 500 represent a similar bet on the future of artificial intelligence (AI) and related technologies.
Of course, we remain very bullish on AI, yet the current situation, in terms of market concentration, means that portfolio managers would need to give away around 40% of their fund just to remain neutral on this theme. And, given our approach is very much a bottom-up one designed to generate returns across sectors, we do not want to relinquish our opportunities to generate alpha, wherever in our investable universe we believe this may come from.
Figure 1: We are at unprecedented levels of index concentration
Source: Allianz Global Investors, DataStream, S&P500 as of 20 September, 2024. Displayed values are data for 20 September, 2024.
Sticking with the US market, but looking more broadly, we are coming out of a period of unprecedented stimulus, coupled with high immigration, which has driven economic and stock market growth. Of course, growth is now softening and there are other signs – for instance, rising personal credit delinquencies – that the tide is turning in the US economy. These changes are likely to lead to more market breadth, with both the performance of the top names softening, as well as opportunities for alpha emerging elsewhere in the market.
This feeds into a further trend that we may see developing in the coming months. Large and rapid expansions of market capitalization – such as we have recently seen, for instance, with Nvidia – have happened before, yet often result in several years of horizontal movement afterwards. For instance, the performance of Microsoft for several years post-2004 serves as a cautionary tale.
Figure 2: This much market cap grab has happened before
Source Alllianz Global Investors, Datastream. September 2024.
Of course, while there is no certainty that history will repeat itself in the same way, we believe there are strong indications that we may now be facing a sea change in terms of the trajectories of some of the biggest tech players that currently dominate US equity markets.
Outlook
While the economic and market outlook remains complex and uncertain, some solid conclusions and inferences can still be drawn from recent events and the current global economic and political situation. With rates and inflation coming down, we are now certainly seeing some weakness in the US economy, but this is a weakness that was needed in light of the danger of overheating. Yet, even given this weakness, it seems the US economy is likely facing a soft landing of some kind with the threat of recession being averted, for now at least.
Of course, huge uncertainties remain, most notably how ongoing conflicts in Europe and the Middle East will be resolved, but also in terms of November’s elections in the US. However, the risks here are perhaps not as severe as they may seem. The oil price has, so far, been resilient throughout the conflict in the Middle East – though this may also reflect underlying economic weakness – and we do not see any of the potential outcomes of the US elections engendering a large shock to markets. Even with a second Trump term – the outcome that would represent the greatest discontinuity from recent years – it is unlikely that this would come alongside a red sweep of Congress, and we would thus still see divided government and the inertia that this entails.
Overall, we expect recent economic developments to work in our favour as markets broaden opportunities emerge across sectors that may have been neglected by many investors over recent years. Alongside this, key megatrends – such as the energy transition and, indeed, AI – remain intact, providing significant tailwinds for sustainable assets across all sectors.
