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Key Takeaways
All Investing is Active Investing
The move to passive investing has been a powerful trend, but to date has focused on security selection. In this context, passive refers to the replication of a market capitalisation-weighted index, while active may describe everything else. The same principle may apply to asset allocation, with passive classically defined as holding the entire investable market in proportion to the abundance of each part.
Clearly, few, if any, investors proportionally own every investable asset.[1] Therefore, almost every investor is active on some level. Furthermore, replicating an equity index such as the S&P 500 is therefore not strictly “passive” since trading is required to match the constituents of the index[2]. In this sense, the connection between buy and hold investing and passive investing can be misleading.
When we look at how assets are invested through more accurate definitions, we believe the share of actively managed assets hasn’t declined, as much as shifted, from security-selection to asset allocation.
That is, those buying exchange-traded funds (ETFs) aren’t buying them for keeps. They’re using them to express an active investment decision (sometimes to meet a client need) and often trading them frequently, invalidating the term “passive.”
On balance, this shift in active management increases the opportunity to outperform, we believe, for investment managers who are able to take broader views on asset classes, sectors, industries, and other characteristics. In turn, this may increase the opportunity for investors who are patient.
Shorter Time Horizons Hurt Investors
Time horizon turns out to be critical for taking advantage of investment opportunities for truly active management and receiving the benefits of compound interest—benefits that are hard to overestimate.[3] Yet, this observation contrasts with the fact that average holding periods continue to fall. Holding periods have arguably been shortened by the rise of passive management, which appears to be a contradiction given passive funds’ low turnover rates.

Exhibit 1: The reduction in holding period. Source: NYSE, Refinitiv. Note: Holding periods measured by value of stocks divided by turnover. https://www.reuters.com/article/us-health-coronavirus-short-termism-anal/buy-sell-repeat-no-room-for-hold-in-whipsawing-markets-idUSKBN24Z0XZ
If index-tracking holdings aren’t frequently buying and selling stocks, how could they contribute to shortening horizons? Because they themselves are being bought and sold. With the rise of lower-cost investment vehicles that can be traded like individual stocks, ETF volumes have risen to meaningful proportions of the market activity relative to their size. Still, it has been estimated that only about 10% of ETF volumes leads directly to the creation/redemption of shares.[4]
Despite this, it does appear that this turnover and activity impacts the underlying securities,[5] with higher volatility and turnover for stocks included within ETFs amplified by arbitrage activity—often impacting sectors, countries, industries, styles, or themes.[6]
This presents an opportunity, through active asset allocation of sectors, industries, and countries across equity markets, and for bottom-up investors that can take more active risk by including focused exposure to these areas. While the game may be getting harder in the more narrowly defined subsectors, it may be an opening for those with a long time horizon and a high active share.
By Definition, You Must Do Something Different to Outperform
According to Sir John Templeton, one of the great investors of the 20th century, it’s impossible to produce superior performance unless you do something different from the majority.
Academics call this “active share,” which is loosely defined as how different an investment strategy is from its benchmark. High active share should not be interpreted as having a higher likelihood of outperformance on its own. Like all things, one should be cautious in drawing conclusions from a single metric. On this point, author and academic Martijn Cremers[7] identified that funds with high active share and low turnover tended to do better on average. This makes sense to us.

Exhibit 2: More-active strategies held for the long run tend to outperform. Source: Cremers, M. 2016. “Active Share and the Three Pillars of Active Management: Skill, Conviction and Opportunity.” See online appendix at https://papers.ssm.com/sol3/papers.cfm?abstract_id-2891047
In our opinion, while certain strategies with lower active share and higher turnover can and do outperform, for fundamental investors time horizon seems to be the road less travelled. This concept of patient capital has been described as time horizon arbitrage and is tied to the idea of limits to arbitrage. In other words, patient investors may reap rewards—these rewards are available to any investor, but in practice go to only those who do what it takes.
Arbitrage Comes in Different Forms, Including Time Horizon
Arbitrage typically refers to different prices set for the same asset, a condition that generally requires not enough market participants seeing the big picture. The astute investor can buy at the lower price and sell at the higher one, keeping the difference.
Once, arbitrage involved buying something (gold, for example) at a lower price in one port, and sailing it to another port to sell at a higher price. With a large enough spread (and trustworthy enough sailors), anyone could take advantage of the price difference, but of course not everyone did.
Time horizon arbitrage is the idea that many investors are so focused on the short term, with lots of competition for investment results, that they don’t see the big picture, in this case the value of the investment for a long-term owner. Whether due to incentives or to psychology or career risk,[8] there’s a reluctance to extend one’s horizon. With all the focus on winning over the short-term, this reduces the competition for information that is only relevant over the long term.
While there are no doubt opportunities over short horizons for talented investors and traders, as the time horizon extends, competition appears to decline. The desire or need for quick results is the siren song for most investors. This presents an arbitrage opportunity for those willing to tie themselves to the mast and wait patiently for potential returns.
Bringing It All Together
While headlines decry the decline of active management, we may be seeing a change of active management from purely security selection to active asset allocation. This utilises portfolios of stocks, principally ETFs, rather than the underlying stocks themselves. The rise of passive management may imply less activity and longer holding periods, however the opposite may be occurring.
With the rise of active asset allocation through ETF trading, we see an opportunity for asset managers willing to be different, taking a long-term view. As the security selection asset manager universe shortens their time horizon and increase their activities, the opportunities may well be in doing the opposite—fishing where the fishermen aren’t.[9] Reinforcing one of the few durable investment advantages—a long-term investment horizon.
We think this changing nature of active management is therefore an opportunity and an advantage for us at Morningstar Investment Management. Our investment process is designed to opportunistically buy assets and patiently hold them until they appreciate. At times this means that we are well out of step with markets as we wait for prices to return to their long-term fair values, but we believe that we will significantly help investors meet their goals in the long run.
Of course, we can’t do this without their help. Changing strategies midstream can destroy value for investors because it often means selling low and buying high—something commonly referred to as “chasing returns.”
Financial advisers can help clients stay the course by reminding them of the big picture and keeping their focus on the long term.