Good reads from around the Web.
Whatever you call it – Smart Beta, factor investing, return premiums like my co-blogger The Accumulator, or “alchemy” like a cynic – trying to get an edge from bespoke passive funds is proving popular.
We’ve got mixed feelings about the trend around here.
The Accumulator does tilt for the value and size factors, for instance.
But our visiting professor of passive investing, Lars Kroijer, says investing in anything but a global tracker is irrational.
The academic literature certainly looks encouraging. Some classes of shares – labelled value, small caps, quality, low volatility, illiquidity, momentum – have previously outperformed the market, for much-debated reasons.
Some say they’re higher risk. Some say they’re anomalies. Some say some of those factors are different manifestations of the same thing. If you’re confused, then there is an entry-level interview with a quant fund manager that explains the basics on Barrons this week.
Whatever the reason for their historical outperformance though, new ETFs have made factor investing much easier.
Relatively cheap Smart Beta funds have taken factor investing from hedge funds to discount brokers. But even fans warn there are caveats.
Short-term: The Krypton factor
For one thing, the academic research flatters to deceive. Getting the higher returns found in the labs from the comfort of your own home might be harder than it looks.
Also, the premiums don’t work all the time. They can go on the blink for years.
Value shares have been in the dustbin since the financial crisis, for example. Only recently have they shown signs of their hoped-for vim and vigour.
In any single period, the divergences can be staggering. The following graph from the Financial Times this week shows how different kinds of UK small cap shares have been doing:

Stocks in the data belong to the Numis Smaller Companies Index.
Source: FT
It’s worth noting that you can’t easily buy into small cap versions of the factors charted in the graph in the UK. Just getting a vanilla small cap tracker is hard enough here.
The data is a result of academic number crunching. But the takeaway message is clear – and Professor Paul Marsh of the London Business School says the same divergence has been seen with larger companies, too.
Marketing for smart beta funds tends to point to long-term graphs. That might seem appropriate for long-term investors. But to get to the long-term, you have to stomach through a lot of short-terms.
For that reason, mixing factors in a portfolio would seem to make sense. If one factor is down in the dumps, another might thrive.
True – but how much mixing before you’ve just recreated a more costly global tracker fund?




