Small caps, big breadth
Global equities have delivered strong outcomes in recent years, as per Chart 3 below. However, a growing share of index returns has been driven by a relatively small group of mega‑cap stocks. This concentration means many global equity portfolios may be exposed to a narrower set of outcomes than investors realise.
There are many ways to diversify global equity exposure: by region, sector, or investment style. Company size is another dimension, and global small companies generally behave differently to the mega caps that dominate headline indices.
Allocating to small caps can help broaden the opportunity set within an overall global equity allocation. For example, there are circa 1,200 companies in MSCI World ex-Australia Index, which is the generally recognised global large cap benchmark, whereas the MSCI World ex-Australia Small Cap Index contains more than 3,600 companies1. Importantly, there is no overlap.
Historically, global small caps have outperformed global large caps over the long term2, typically due to longer growth runways, given these companies are starting from a lower base. They also tend to offer different sector and style exposures compared with index heavyweights.
Key reasons investors may consider global small caps include:
Diversifying beyond index heavyweights
Major global equity indices are increasingly dominated by a small number of mega cap stocks, which can lead to unintended concentration risk.
Broadening opportunity sets and return drivers
Global small companies expand the investable universe across regions and earlier stage businesses, offering access to innovation and potential long term growth as future leaders emerge.
Enhancing sector and style diversification
Small caps typically have greater exposure to sectors such as industrials, healthcare and specialist services, helping diversify portfolios away from technology heavy index leaders.