The COVID-19 crisis highlights a golden rule of investing 

It’s a golden rule of investing, and the spread of COVID-19 illustrates its importance, especially as I don’t think markets are close to bottom yet.

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.

Pity the individual who chose to begin their investment journey a few weeks ago. Especially pity them if they had a big lump sum and invested it all. 

Don’t get me wrong, I’m sure the markets will recover, eventually. But this situation does illustrate a golden rule of investing — never throw all your money at the stock market in one go.

Actually, on thinking about it, I would not pity an investor who has just begun their investment journey if they had followed this rule — I would envy them.  

The markets have further to fall

Already we have seen a share rout, followed by a mini recovery, and then further falls. The mini recovery saw many conclude that shares had hit bottom, that ‘now was a time to buy.’

Such false dawns are common occurrences during stock market crises. The infamous 1929 crash saw many short-lived recoveries which tempted shareholders back in.

COVID-19 is spreading exponentially. It makes most of us nervous about our own health and the health of loved ones — is that a seasonal cold, or the dreaded virus? We wouldn’t be human if those thoughts didn’t cross our minds every time there’s a sneeze. 

I believe the markets are underestimating the likely spread of the virus and its economic impact. They always are lousy at judging something that changes exponentially. Maybe it’s in our genes — Ray Kurzweil, the famous futurologist and Google’s Director of Engineering has said that our evolutionary past means we have no instinctive understanding of exponential — we might get it intellectually, but not in our gut. 

As the virus spreads, we will change our behaviour, employers may eventually become more nervous about workers spreading the virus than about lost production, and markets will fall a lot further.

As for predicting the recovery, getting the timing right is nigh on impossible.

Diversify over time

That is why diversification over time is so important. If you plough all your money into stocks in one go, you risk timing your investment with stock market falls. 

Sure, if you sit tight you will probably regain your money eventually, but you can do better.

If, instead, you drip feed your money into the market — say once a month for three years, or once every three months, you are limiting the risk while increasing the chances that that you will benefit from a recovery.

Three different situations, same response

Let’s say that you were savvy enough to have liquidated your portfolio at market peak, you have a lump sum for some other reason, or you invest a proportion of your income every month.

I would say spread out your investment over three years. If you invest a proportion of your income every month, then relax, you are following that strategy by default.

Follow that approach and just as investment losses occur on the falls, profits will accrue on the rises. 

Views expressed in this article are those of the writer and therefore may differ from the official recommendations we make in our subscription services such as Share Advisor, Hidden Winners and Pro. Here at The Motley Fool we believe that considering a diverse range of insights makes us better investors.

More on Investing Articles

Tesla building with tesla logo and two teslas in front
Investing Articles

£5,000 invested in Tesla stock on Christmas Eve is now worth…

Tesla stock is stuck in reverse at the moment. This year, it has fallen by around 15%. Is there potential…

Read more »

Close-up image depicting a woman in her 70s taking British bank notes from her colourful leather wallet.
Investing Articles

2 UK dividend stocks to consider buying in April

High-quality established businesses with reliable cash flows often make for great dividend stocks. Here are two for investors to take…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

£10,000 invested in HSBC shares 5 weeks ago is now worth…

Our writer asks if HSBC shares are worth a look after the recent double-digit dip, as well as highlighting an…

Read more »

Young female business analyst looking at a graph chart while working from home
Investing Articles

3 charts every investor needs to see before the next stock market crash

Worried about a stock market crash? It might be surprising how much investors stand to gain by doing one simple…

Read more »

A rear view of a female in a bright yellow coat walking along the historic street known as The Shambles in York, UK which is a popular tourist destination in this Yorkshire city.
Investing Articles

Lloyds shares: is £1.15 or 70p next?

Lloyds' shares started the year in a strong upward trend but then plummeted. The big question now is – where…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

Here’s how to try and create a £10,000 second income portfolio

Millions of UK investors use the Stocks and Shares ISA to build wealth and eventually take a second income. Dr…

Read more »

ISA Individual Savings Account
Investing Articles

3 steps to aim for a lifetime of passive income from a new ISA

It's that time of year again when we're all planning how make the most of our new ISA limit to…

Read more »

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

A once-in-a-decade chance to buy Nvidia shares at a discount?

Nvidia shares are trading at a discount to the S&P 500 for the first time in 10 years. Is it…

Read more »