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

These 3 stunning UK stocks have doubled my money in 18 months. Time to bank the profit?

Harvey Jones had a brilliant month in November 2023, when he bought the three best-performing UK stocks in his portfolio. Should he bank his profits?

| 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.

Young mixed-race woman looking out of the window with a look of consternation on her face

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.

I hold around 20 UK stocks in my self-invested personal pension (SIPP), but three stand head and shoulders above the rest.

Coincidentally, I bought all three in November 2023, and they’ve all hit the magic 100% mark in the Gain/Loss column of my online SIPP. What a month that was!

This is brilliant and I love ‘em but it does leave me facing a problem. They’ve all failed to kick on since hitting that milestone.

A secondary issue is that one of them is now worth almost 9% of my entire SIPP, so I’m heavily exposed to its fortunes.

3i Group flies

That stock is 3i Group (LSE: III). Shares in the FTSE 100-listed private equity manager have rocketed 357% in five years, and continue to fly, up 39% in 12 months.

Established in 1945, 3i has a brilliant track record of buying companies, building them up, pocketing dividends then selling them at a profit.

It has a huge success on its hands in discount retailer Action, which has grown so fast it now makes up more than 75% of 3i’s total £23.6bn portfolio.

Now I’m worried 3i may be a little too Action-packed. I’m not sure what its exit strategy is or whether it even wants one.

Another issue is that shares in the investment trust are trading at a massive 69% premium to their underlying net value. 

I’m still sitting on a 97% gain, and common sense suggests I should at the very least reduce my exposure. Trouble is, it’s hard to kiss success goodbye.

Costain is cheaper

I’m a bit less concerned about the second double-my-money stock, construction specialist Costain Group.

Costain has also idled since hitting the 100% mark but still looks cheap, with a price-to-earnings (P/E) ratio of just 8.3.

There’s lots to like here. Its forward work position, a key industry measure, jumped £1.5bn to a record £5.4bn in 2024. The shares are up 44% in the last 12 months.

Construction can be a volatile sector, so that’s a concern. Also, our cash-strapped government may struggle to fund infrastructure development.

However, Costain looks solid, with net cash of £180m against a £330m market cap. With its forward work piling up, I’d rather buy more than sell.

Just Group stumbles

FTSE 250 insurer Just Group (LSE: JUST) has also been going gangbusters, up 42% over the last year.

However, the shares have fallen 12% in the last three months, after full-year results published on 7 March fell well short of estimates.

Adjusted pre-tax profit fell by 7.3% to reach £482m, mostly due to lower non-operating items. Underlying operating profit climbed 34% to £504m and group chief David Richardson remains upbeat.

He noted that the company had more than doubled profits in just three years, a process supposed to take five. Just still looks incredibly cheap with a P/E of just 4.1. The trailing yield is a low 1.68%, but the dividend policy is progressive, with a 20% hike in 2024.

I bought for the long-term, and since I hold a modest stake, I’m not selling. I might even take advantage of the recent dip. Providing I can bring myself to trim my position in 3i.

Harvey Jones has positions in 3i Group Plc, Costain Group Plc, and Just 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

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

After Qatar cuts its stake in Sainsbury’s, is its share price now a great short-term risk/long-term reward play?

Sainsbury’s share price slid after Qatar cut its stake, but with a new activist investor at the helm, does it…

Read more »

The flag of the United States of America flying in front of the Capitol building
Investing Articles

British billionaire has 61% of his hedge fund in these 3 S&P 500 stocks 

This world-class hedge fund manager only invests in companies with extremely wide moats. Which three S&P 500 stocks currently dominate…

Read more »

Businessman hand flipping wooden block cube from 2024 to 2025 on coins
Investing Articles

I’m targeting £11,363 a year in retirement from £20,000 in Aviva shares!

£20,000 invested in Aviva shares could make me £11,363 in annual retirement income from this FTSE 100 passive income investment…

Read more »

Investing Articles

Down 20% but 15% annual earnings growth forecast — is BT’s share price a bargain or a bust going into 2026?

BT’s share price has fallen a long way since July, but analysts forecast strong earnings growth in the coming years,…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

I asked ChatGPT to produce an unbeatable second income ISA portfolio and it said… 

Harvey Jones asked artificial intelligence to come up with a portfolio of dividend-paying stocks to produce a second income for…

Read more »

Investing Articles

Worried about a 2026 stock market slump? This ISA investment pays 4%+ with low risk

This type of low-risk fund could be an option to consider for ISA investors who are waiting for better stock…

Read more »

Two female adult friends walking through the city streets at Christmas. They are talking and smiling as they do some Christmas shopping.
Investing Articles

2 British income shares to consider before the Christmas boom

Our writer scoured historical market data to uncover which income shares typically do well in the run up to Christmas.…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Will Rolls-Royce shares continue their epic run into 2026 and beyond?

Noting that differences of opinion make the world go round, James Beard discusses what might happen to Rolls-Royce’s shares next…

Read more »