5 awful moves new investors should avoid in 2020

Will 2020 be the year you begin investing? If so, you really need to avoid making these nightmare moves.

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.

Here at the Fool UK, we think it’s never too soon to begin investing. Thanks to the power of compound interest (or the ‘snowball effect’), the earlier you get involved, the better your chances are of making a mint from the markets.

Having said this, there are a few things all new investors should really try to avoid. 

1. Starting without a solid foundation

Three things need to happen before you buy a single stock, in my opinion.  

First, make sure you’ve completely wiped any high-interest debt. Investing is all very well, but doing so while still carrying debt is the equivalent of taking one step forward and two back. 

Second, have some ‘rainy day’ savings for life’s little emergencies. A few months’ of expenses should be sufficient to get you by. 

Third, open a Stocks and Shares ISA. Fail to do this and you’ll end up handing back a proportion of what you make to the taxman.   

Those who choose to bypass the above will be taking far more risk than necessary before they’ve even get started.

2. Investing everything in one go

As a market newbie, it can be tempting to assume you need to put all your money to work in one fell swoop. 

Thankfully, this isn’t the case. While it’s never a good idea to stay in cash for too long (inflation will gradually erode its value), all major brokers now offer the option of making regular monthly investments. As well as paying less in commission to acquire stock, this strategy also ensures you won’t invest everything at the top of the market.

Not needing to rush is one of the few advantages private investors have over professional money managers who are required to chase performance to keep their jobs. Don’t squander it. 

3. Ignoring diversification

Even the best companies experience setbacks. If you’re going to pick your own stocks from the outset, it’s therefore vital to spread your money around.

This usually means buying stocks in different industries (such as housebuilders, retailers, pharmaceuticals) but it could also be applied to the size of businesses (not too many small-caps). Moreover, it’s a good idea to buy firms that aren’t too dependent on trading in just one part of the world. 

How many stocks is enough? Research suggests roughly 20-25 should give you all the diversification you need.

4. Buying what’s popular

Another rookie error is to only buy those stocks that have had a good run in the last few weeks or months. 

While it can be very profitable, the issue with this approach — known as ‘momentum investing’ — is that momentum can disappear very quickly, causing share prices to fall. This is usually exacerbated in popular stocks as they tend to have very rich valuations.

If you must buy something hot, try balancing it out with something that offers value and/or income

5. Not being bothered

The rationale behind stock picking is very simple: we buy shares in the hope of selling them on for a higher price. In reality, it requires effort, patience and the ability to keep emotions in check.

If you suspect that your commitment to researching companies and monitoring their performance may last about as long as your 2020 gym subscription, it may be best to avoid buying individual stocks and put money in cheap, market-tracking funds instead.

Paul Summers has no position in any of the shares mentioned. The Motley Fool UK has no position in any of the shares mentioned. Views expressed on the companies mentioned 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

Portrait of pensive bearded senior looking on screen of laptop sitting at table with coffee cup.
Investing Articles

£1,000 invested in Lloyds shares 6 weeks ago is now worth…

Lloyds shares have been on a huge run in the last couple of years. But is a 15% pullback in…

Read more »

Man smiling and working on laptop
Investing Articles

After the FTSE 100’s slump, these bargain shares are calling!

Are you on the lookout for top cheap stocks to buy? Royston Wild reveals three FTSE 100 value shares he's…

Read more »

Man hanging in the balance over a log at seaside in Scotland
Investing Articles

Worried about a stock market crash? Here are 2 things you should know

A stock market crash may look plausible, but it’s far from a done deal. Still, if markets do wobble, I…

Read more »

piggy bank, searching with binoculars
Investing Articles

This FTSE 100 stock soared 900% — but after a 25% crash, is the rally over?

After blowing away the FTSE 100 in 2025, this miner has hit turbulence in 2026 — Andrew Mackie investigates what’s…

Read more »

A senior man and his wife holding hands walking up a hill on a footpath looking away from the camera at the view. The fishing village of Polperro is behind them.
Investing Articles

How much do I need in an ISA for a £700 second income?

Investing in dividend shares can be a great way to target a second income from a Stocks and Shares ISA.…

Read more »

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

If there’s a stock market crash this week, will you be ready?

Christopher Ruane explains why he's not phased by the inevitability of a stock market crash -- but is actively preparing…

Read more »

Mindful young woman breathing out with closed eyes, calming down in stressful situation, working on computer in modern kitchen.
Investing Articles

£15,000 invested in Diageo shares 3 weeks ago is now worth…

Bad times for Diageo shares! The last three weeks have seen yet another drop, but is this a time to…

Read more »

A pastel colored growing graph with rising rocket.
Investing Articles

This FTSE 100 stock has outperformed BP’s shares over the past month!

With the oil price soaring it’s no surprise to see BP’s shares going up. But there’s another FTSE 100 stock…

Read more »