Diversification’s downside: resilience has a price

Forecasts are fallible: diversification offers protection from the unforeseen.

| More on:

The content of this article was relevant at the time of publishing. Circumstances change continuously and caution should therefore be exercised when relying upon any content contained within this article.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More.

Benjamin Roth’s The Great Depression: a diary isn’t the cheeriest of reads. Roth was a lawyer, practising in the 1930s in Youngstown, Ohio – an industrial town that was home to several steel companies.
 
Booming during the 1920s, it had been badly hit by the Great Depression that began with the financial crash of 1929. Roth’s diary, published in 2009 at the instigation of his son and grandson, meticulously recorded the period from June 1931 to December 1941.

Very much an amateur economist, Roth recorded many of the predictions that were variously made during those years – and fascinatingly, subsequently went back to them as the years passed, to record how they worked out. Reading it over the weekend, I spotted one such update dating from 1962, two decades after the diary closed.

Long-term returns

Coincidentally, I’d picked up Roth’s diary to re-read just after finishing John Newlands’ excellent short history of the Dunedin Income Growth Trust (LSE: DIG), covering the years from its launch in 1873 up to 2018.
 
Newlands, for readers who don’t recognise the name, is something of a historian of the investment trust industry, and the author of the classic text on the subject.
 
Dunedin, he relates, was founded by Robert Fleming – yes, that Robert Fleming, of lauded investment banking firm Robert Fleming & Co – very early on in his stockbroking and banking career. Inspired by the launch of the Foreign & Colonial Investment Trust (one of the world’s very first investment trusts) in 1868, he decided to emulate it, but invest in shares rather than government bonds.
 
And both Roth’s diary and Newlands’ history of Dunedin, I realised, made exactly the same point: the future is unknowable, and predictions about it are often wrong.
 
The best defence against that uncertain future: invest conservatively, invest with an eye for bankable income, and – above all – diversify.

Diversified holdings

Granted, Fleming and his various successors over the years might not recognise some of Dunedin’s largest holdings today: AstraZeneca, GlaxoSmithKline, Diageo, BHP Group, Rio Tinto, Weir Group, National Grid and so on.
 
But they would surely understand the selection principles at work, and which are at work in the many other income-seeking investment trusts that have followed in Dunedin’s wake, sometimes decades later.
 
Murray Investment Trust (founded in 1923), City of London Investment Trust (1891), The Merchants Trust (1889), Lowland Investment Company (1963) – all hold diversified portfolios of large, high-quality, higher-yielding FTSE 100 companies.
 
It’s a policy that has served them well, as you can see. Because if you’re still successfully serving investors’ needs after 100–150 years, you must be doing something right.

Income at a price

And it’s fair to say that here at The Motley Fool we’re fans of investment trusts. I hold a few myself.
 
But equally, we’re aware of their limitations.

For one, they come at a price: although generally cheaper than open-ended investment funds, their managers levy an annual charge on investors, generally in the range of half a percent to one percent of the trust’s value.
 
That may not sound much. But if a trust is yielding – say – 5% after charges, such a fee means that investors’ income would have been 10–20% higher, if they had held the trust’s underlying investments directly, rather than through the trust.

Diluted returns

Yet investment trusts have another, more fundamental, weakness. Because diversification has a downside: risks are spread, but so are returns.
 
The popular City of London Investment Trust, for instance, has 86 holdings. As of its latest quarterly update, only one of these holdings – British American Tobacco – made up more than 4% of the portfolio. Most of the trust’s top ten holdings are of the order of 2.5–3.0%.
 
Put another way, a trust that is so diversified is never going to shoot the lights out from a capital gains point of view. It’s simply too diverse. Income will be resilient and reliable, to be sure. But growth is going to fairly closely track the Footsie as a whole, albeit the higher-yielding part of the Footsie.

And put another way still, once you’ve factored in the typical trust’s charges, it may be better to simply buy a cheap index tracker, where charges are on the order of one-tenth of the typical trust.

Focus finds favour

As ever, legendary investor Warren Buffett sums it up best.
 
“Keep all your eggs in one basket, but watch that basket closely,” he wrote.
 
It certainly hasn’t harmed Buffett’s returns.

Malcolm owns shares in Dunedin Income Growth, Murray Investment Trust, City of London Investment Trust, Lowland Investment Company, AstraZeneca, GlaxoSmithKline, BHP Group, Rio Tinto, and Weir Group. The Motley Fool UK has recommended Diageo, GlaxoSmithKline, and Weir.

More on Investing Articles

Black woman using smartphone at home, watching stock charts.
Investing Articles

2 spectacular growth stocks to consider buying in March

Investors ignore the risks with growth stocks when things are going well. But when this changes, fixating on the dangers…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

Why is the FTSE 100 suddenly beating the S&P 500?

The UK's blue-chip index has been on fire over the past couple of years, helping it catch up to the…

Read more »

Artillery rocket system aimed to the sky and soldiers at sunset.
Investing Articles

This non-oil FTSE stock’s risen 4.6% in 3 days. What’s going on?

Against the backdrop of trouble in the Middle East, James Beard investigates why this FTSE 100 stock’s doing so well.…

Read more »

Three signposts pointing in different directions, with 'Buy' 'Sell' and 'Hold' on
Investing Articles

Has a 2026 stock market crash just come a whole lot closer?

If we're in for a stock market crash, what's the best way for us to prepare, and what kinds of…

Read more »

Silhouette of a bull standing on top of a landscape with the sun setting behind it
Investing Articles

Up 79% in a year, this FTSE 250 stock still gets a resounding Strong Buy from analysts

This under-the-radar growth stock in the FTSE 250 has been on fire over the past 12 months. Why are City…

Read more »

Frustrated young white male looking disconsolate while sat on his sofa holding a beer
Investing Articles

Vistry shares down 20%! Here’s what I’m doing…

Vistry shares have crashed as the firm cuts prices and moves away from share buybacks. But is Stephen Wright’s long-term…

Read more »

UK financial background: share prices and stock graph overlaid on an image of the Union Jack
Investing Articles

The IAG share price is climbing today despite war fears – what’s going on?

It's been a tough week for the IAG share price and Harvey Jones expects more volatility. Yet the FTSE 100…

Read more »

Businessman with tablet, waiting at the train station platform
Investing Articles

By March 2027, £1,000 invested in Natwest shares could turn into…

NatWest shares have been on a tear in recent years. What might the next 12 months have in store for…

Read more »