In the context of investing -- and specifically retail or family office investing -- portfolio concentration risk is the risk that you are overly exposed to something. That something can be any of the following and more:
Inappropriate portfolio concentrations are those that expose your portfolio to more risk than you would like or more risk than would be prudent. As such, assessing the concentration levels within your investment portfolio and taking steps to ensure that they are in line with your goals is a smart thing that should be done every so often.
The good thing is that it’s pretty easy and straightforward to determine the concentration levels for a lot of things like stocks, sectors, and countries (things like determining the concentration to strategies and assumptions is a bit more complex).
Step 1: Compile your entire investment portfolio
This might be the most difficult part as modern investors often have portfolios spread out amongst different account or different institutions. For example, you might have a brokerage account, a savings account for an emergency fund, some random savings accounts, and a 401k plan at work – this isn’t unreasonably complex but it does mean you’ll need to do a bit of work compiling things initially.
In fact – you should have done this already; the info should already be complied! If you’re investing and you don’t have a single source that is updated at least occasionally where you can get a high-level picture of your portfolio, you’re making a mistake. Spending some time on this will be beneficial in many ways, beyond just understanding concentrations and concentration risk.
Step 2: Pick a concentration category (eg. stocks, countries, sectors, etc.)
Next, pick a category against which you'd like to determine concentration levels in your portfolio. Don't start with complex things - start with basic things and move towards more complexity as you slowly get a better understanding of the risk nature of your portfolio.
For example, a great place to start would be sectors - you don't want to be exposed to a particular sector too much. If you're only in tech stocks or only in blue chips, you might want to diversify at bit more, depending on your risk tolerance and investing horizon. At the very least you'll want to know that you're heavily concentrated in particular sectors.
Other key concentrations are for individual stocks (eg. the investor who's absurdly exposed to one particular stock they love at the detriment to proper portfolio risk management and diversification).
Step 3: Simply make a list
For a retail investor doing simple portfolio concentration risk analysis, once you have your portfolio in one place and once you decide what you want to examine, it's very simple to proceed.
All you need to do is make a list with two columns - the particular investment product in the right column and the percent of the portfolio that the investment product represents. This is best illustrated by the table below.
As you can clearly see, this isn't a healthy portfolio. The vast majority of the portfolio is concentrated on
The portfolio has home country bias and seems to biased toward popular or newsworthy tech stocks and friend/family tips. Only 30% (broad market ETF + global ETF) of the portfolio is in a broad, well-diversified, investment product while 55% of the portfolio is in just 3 stocks. That's simply absurd for most investors - unless you're an excellent/skilled investor with a very long time horizon and a high risk tolerance, that sort of exposure is unacceptable.
Step 4: Take prudent risk-mitigating steps to reduce the concentration risk within your portfolio
Finally, after the analysis, you would take action - you'd act in ways to adjust your portfolio to reduce concentration risk. Of course, in doing this you'd want to be prudently confident in the insights on which you base your decisions and you'll want to take other factors into account - these other factors might include tax implications and macroeconomic assumptions.
In our example above, a prudent investor would sell off some of the tech stock exposure and re-assess weather the family member's energy stock tip was actually a good tip (eg. is the stock worth owning). Then, the investor might take the proceeds from these sales and invest them into more well-diversified products like ETFs, focusing both on foreign and domestic ETFs. The investor would also want to make sure to focus on both small cap and large cap ETFs, keeping in mind their risk tolerance and adjusting appropriately.
Finally, the investor might see that they are only in equities - this might make sense but putting some money in bonds or alternatives might make sense for some investors. These decisions are all individual - one needs to act prudently based on their own circumstances.
Concentration risk is only one type of investment portfolio risk, but it's an easy one to spot and fix. A lot of investors are prone to taking on too much concentration risk. They don't do it intentionally - they just lack an investing plan or approach and instead buy stocks here and there based on emotions. This is hard to remedy - not everyone is going to create an investing approach and monitor it over time. But, people easily -- and enjoyably -- do the above exercise once in a while (at least once a year) to see if their portfolio is too concentrated on one stock, one sector, or one economy.
And now, given the rise of cyrptocurrencies and crypto assets to quasi-mainstream financial assets, we're dedicated to providing quality, relevant, and interesting material on cryptocurrencies and cryptoassets. Articles on Bitcoin, Ethereum, Ripple, Cardano, and many more cryptocurrencies and cryptoassets can be found on Pennies and Pounds - all that in addition to a plethora of information on what cryptoassets are, how the entire crypto industry came to be, blockchain/immutable ledger technology, mining, proof of work, proof of stake, and how to prudently invest in crypto if you are so inclined (based on your risk tolerance and ability to withstand the volatility that will come with a crypto portfolio).