Share your opinion and earn yourself a free Motley Fool premium report!

We are looking for Fools to join a 75 minute online independent market research forum on 15th / 16th December.

To find out more and express your interest please click here

3 rookie ISA errors to avoid in 2025!

Harvey Jones is gearing up to start populating his Stocks and Shares ISA in 2025. But first he needs to learn from the mistakes he made over the last 12 months.

| 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.

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

Image source: Getty Images

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.

Even relatively experienced investors can make basic ISA errors, and I had my share in 2024. Here are three of the most glaring.

Mistake 1: treating investing like gambling

After thoughtfully building up a balanced portfolio of FTSE 100 and FTSE 250 stocks, I decided to have a bit of fun with the cash I had left.

So I invested in a couple of volatile stocks: James Bond car maker Aston Martin Lagonda and grocery logistics specialists Ocado Group.

Both had taken an absolute battering, crashing around 96% and 86% peak to trough. I convinced myself they must be bargains. They weren’t.

The Aston Martin share price is down 49.32% over 12 months, while Ocado is down 57.77%. Investing is fun but it’s not a game. And it’s definitely not a punt. These two flops have dragged down my performance in an otherwise successful year. I won’t be so rash in 2025.

Mistake 2: making a big macro call

I had 2024 all mapped out in my head. This was the year when interest rates would tumble and high-yielding FTSE 100 stocks would surge as a result.

As yields on cash and bonds fell, ultra-high-yielders like Legal & General Group and Phoenix Group Holdings look even more attractive.

Yet with inflation proving sticky, rate cuts have been in short supply. We may have to patient in 2025 too. My mind map was rubbish.

As Warren Buffett warns, no investor can repeatedly and accurately predict the future. The Legal & General share price has fallen 8% over one year with Phoenix down 3%.

As mistakes go, this isn’t the worst. The two insurers yield a bumper 9% and almost 11%, respectively, and I’ll reinvest every dividend to buy more shares at the lower price. And who knows, maybe interest rates will fall faster than expected in 2025, and the shares will rise too. That’s not a prediction.

Mistake 3: obsessing about past performance

Even rookie investors know past performance is no guide to the future. The warning appears on every investment ad. Alas…

Two years ago, I named Intermediate Capital Group (LSE: ICG) my top pick for 2023, but didn’t have the cash to buy it myself. Last Christmas, I discovered the private equity specialist had lived up my high expectations: its shares had jumped more than 50%.

I kicked myself, but still didn’t buy it. I thought I’d missed my chance. Yet the Intermediate Capital Group share price is up another 28% this year. The trailing 3.73% yield would have lifted my total return above 30%.

I think it’s a great company but I missed out because I was obsessing over all the performance I had lost out on.

This looks like the opposite of Mistake 1, but in fact it’s the same. Rather than looking at company fundamentals, I’d been watching the share price. In football they call it ball watching.

Intermediate Capital Group looks nicely placed to deliver organic growth as private capital markets grow, and it’s raising record amounts of funds. First-half profit before tax rose 21% to £196m, with a stunning 55% profit margin due to operational efficiency. And it looks solid value trading at 13 times earnings. I should be looking at figures like these, not performance. I’ll try to put all this right in 2025.

Harvey Jones has positions in Aston Martin, Legal & General Group Plc, Ocado Group Plc, and Phoenix Group Plc. 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

Belfast City Sunset with colorful twilight over Lagan Weir Pedestrian and Cycle Bridge spanning over the Lagan River in downtown Belfast
Investing Articles

Here’s what £5,000 put into HSBC shares in January would be worth now!

Would someone who bought HSBC shares back in January now be sitting on a paper profit or loss? Christopher Ruane…

Read more »

Percy Pig Ocado van outside distribution centre
Investing Articles

Down 91%, is there any hope left for Ocado shares?

Down 91% in five years, is the writing on the wall for Ocado shares? Our writer doesn't necessarily think so…

Read more »

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

It’s the most popular UK stock in 2025 but hasn’t grown in 5 years! What’s going on?

Harvey Jones is baffled by the sheer popularity of this UK stock. Its shares have hardly grown in recent years…

Read more »

Finger clicking a button marked 'Buy' on a keyboard
Dividend Shares

How much do you need in a FTSE 250 portfolio to target £2,147 in monthly income?

Jon Smith runs through the steps needed to build up a generous dividend portfolio and outlines why the FTSE 250…

Read more »

Tabletop model of a bear sat on desk in front of monitors showing stock charts
Investing Articles

2 stocks I wouldn’t touch with a bargepole today in my ISA and SIPP

The following two stocks have a history of being incredibly popular with retail investors. So why is this writer avoiding…

Read more »

Smart young brown businesswoman working from home on a laptop
Investing Articles

£10,000 to invest? I asked ChatGPT if it would work harder in a Stocks and Shares ISA or SIPP and it said…

Harvey Jones calls on artificial intelligence to exmaine whether it makes more sense to invest for retirement inside a Stocks…

Read more »

Fans of Warren Buffett taking his photo
Investing Articles

No savings at 40? Use Warren Buffett’s golden rule to potentially build a £12,000 second income

Following Warren Buffett’s approach, I’ve learned how disciplined investing can grow a passive income – but only if hidden risks…

Read more »

Investing Articles

With silver soaring to $60, the Fresnillo share price is turning into a runaway express train

Fresnillo is the FTSE 100’s runaway leader in 2025. With silver surging past $60, can its share price keep defying…

Read more »