Last Updated May 4, 2021
So far I have managed to stay completely silent on the topic of Brexit, at least on this blog. However, I have been asked many times if I have a secret investment plan for surviving and even thriving in the event that the UK voted to leave the EU.
Since we now have just such a vote I thought it would be remiss of me not to say a few words, although I will be sticking purely to my secret investment plan and not wandering into the murky world of politics.
I’ll work through each of the major points in turn and then reveal my secret plan:
Point 1: A vote to leave the EU means more uncertainty
I think it would be difficult to argue against this point, in the short to medium-term at least.
Although the long-term uncertainty around both the Remain and Leave outcomes is probably about the same, i.e. nobody has the faintest idea how the world will look 10, 20 or 30 years from now, I think we can safely say that over the next few years the future of the UK economy just got a whole lot more uncertain.
Point 2: The future was, is, and always will be, uncertain
The fact that the future is uncertain, Brexit or not, should not exactly come as a big surprise to most investors. Investing is after all the art of trying to take on a degree of uncertainty in a profitable manner.
There are several key uncertainties which are always true and which investors should never forget:
- The future of any single company is highly uncertain
- The future of any single industry is highly uncertain
- The future of any single country is highly uncertain
- The future of the stock market is highly uncertain
The vote to leave the EU has made people much more aware of that third uncertainty than usual, but the point is that these risks and uncertainties are always there, whether we are aware of them or not.
In my opinion Brexit is just another risk in the unending sequence of risks which investors have to face up to. As such I don’t think it’s sensible for investors to have any special plans for Brexit, or any other specific event.
Instead I think they should follow a simple plan which is designed to keep risks and uncertainties to acceptable levels at all times, regardless of what events may or may not occur in the future.
Point 3: Diversification is by far the best defence against uncertainty
From an investment point of view my preferred method for dealing with these uncertainties is to stay widely diversified across each dimension:
- Avoid being over-exposed to any one company
- Avoid being over-exposed to any one industry
- Avoid being over-exposed to any one country
- Avoid being over-exposed to the stock market
Since the underlying risks are always and forever present I think each of these risk avoidance strategies should be used at all times and in a consistent manner, regardless of whether the market or the economy is up or down, volatile or calm.
Here’s how I think about each of these dimensions of risk in turn:
Controlling company-specific risk – This one is fairly simple. Just set a limit on the maximum you’re willing to have invested in any one company, as a percentage of your overall portfolio.
Controlling industry-specific risk – There are two aspects to this one. First, what does “industry” mean and second, how to control exposure to each of them.
On the first point, there are at least a couple of different industry classification systems, but the the definitions I use come from the Industry Classification Benchmark (ICB), which is the system used by FTSE. I focus on controlling exposure to any one of the ICB sectors rather than industries, as Sector provides a more appropriate degree of granularity in my opinion.
On the second point of controlling sector/industrial exposure, there are two main routes. Keep track of your exposure to each sector as a percentage of your overall portfolio and then put a limit on how much you’ll have in any one sector or, more simply, put a limit on how many stocks you’ll have from any one sector.
Controlling country-specific risk – The easiest way I’ve found to do this is to jot down the percentage of revenues and/or profits each of your holdings generates from UK (or whatever region you’re most likely to be over-exposed to). Then just put a cap on the average exposure you’re willing to take across all holdings in your portfolio.
Controlling stock market risk – Not everybody wants to be 100% invested in the stock market because it’s too risky for them. The answer is usually to have some portion of your portfolio in other volatile asset classes (usually via some sort of ETF or similar) such as bonds, commodities, property and so on. Alternatively, you could hold the non-equity portion of your portfolio in non-volatile assets or cash.
Here’s how I think about how much of an overall portfolio an investor might want to have in equities:
First of all, as a rough rule of thumb you should expect to see equity markets drop by at least 50% on several occasions during the typical investment lifetime of a decade or three.
You should then think about how much of a drop in the value of your portfolio you could stand before panic-selling and making a dash for the apparent safety of cash.
For example, if the biggest peak-to-trough decline you can stand is 20% (which would indicate that you’re a relatively risk-averse investor) then it would probably be a good idea to have no more than 40% of your portfolio in equities or other volatile assets.
That’s because a 50% decline in the value of the value of your equities (which make up 40% of your portfolio) would produce a 20% decline in the value of your portfolio as a whole.
So in a really bad 50% bear market you’d only see a 20% decline, assuming that the remaining 60% of your portfolio was in cash or some other fixed or non-volatile investment.
An investor who could stomach a 40% decline would have limit their stock market exposure to 80% and so on.
My secret Brexit investment plan: Keep calm and carry on
By now it should be fairly clear that there is no secret Brexit investment plan.
Like most investors I am not as clever as George Soros and I have no ability to stay “ahead” of the market by shorting the pound or the FTSE 100, or moving into this, that or the other sector which may or may not suffer/surge in the post-Brexit boom/bust.
Instead I use a simple diversification policy which I will not be changing one jot because of the UK’s decision to exit the EU.
That simple diversification policy follows on from the four key uncertainties mentioned above and is designed (along with a collection of other rules) to produce a portfolio which generates higher returns than the FTSE All-Share whilst also being less risky:
- Don’t have more than 6% of the portfolio invested in any one company (which means holding 30 companies most of the time)
- Don’t have more than 10% of the portfolio invested in any one industry or sector (i.e. three out of those 30 holdings)
- Don’t have more than half of the portfolio’s aggregate revenues (or profits) coming from the UK
- Stay 100% invested in equities at all times (since I know that personally I can just about stomach a 50% decline in the value of my portfolio)
Those rules are calibrated to my personal risk tolerance, so if you choose to avoid being over-exposed to companies, industries, countries and equities then you may well decide to use slightly different rules to those listed above.
- If you are more of a risk seeker then you might choose to hold 20 companies instead of 30, with a maximum of 10% per company instead of 6%.
- If you are more risk averse you might choose to have, say, no more than 50% in equities, with the rest in cash or other fixed investments.
However, the basic idea of always being widely diversified across multiple dimensions of risk is still a very good one, especially for stock pickers.
At the very least it is, for most investors, a far more sensible way to cope with the uncertainties of Brexit than any quick-footed attempt to either avoid losses or make a quick profit.