Is the Sirius Minerals (SXX) share price the buy of the decade?

The Sirius Minerals share price has stabilised at under 4p. Roland Head gives his verdict on this troubled business.

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.

Sirius Minerals (LSE: SXX) shareholders are enduring an agonising wait. They must see if chief executive Chris Fraser can secure financing for the Woodsmith Mine, preferably without wiping out shareholders. 

This is far from certain. The last time the shares were trading at under 4p was in 2010.

Since then, the company has proved up this world-class potash asset, secured planning permission, and raised $1.2bn of stage one financing. For the shares to fall to this level again now suggests that the market has serious doubts about the remaining value of the firm’s equity.

Are the shares a bargain buy? In this article I’ll explain why I’m not yet convinced.

A great project

There’s no doubt in my mind that the Woodsmith Mine could be a world-class asset. Potential customers seem interested, too. According to a recent announcement, Sirius has now contracted buyers for up to 13.8 million tonnes per year of POLY4 fertiliser.

Although this level wouldn’t be reached until a number of years after production has started, I still think it’s encouraging.

I hope the project succeeds. But I believe that shareholders need to separate their view of the project from their view of SXX shares. Even if the project succeeds, existing shareholders could still suffer further losses. Let me explain.

This is what’s happening now

September’s share price crash was caused by the company’s failure to secure the $3.5bn funding it needs to complete the build of the mine. Without a replacement funding package, the firm could run out of cash by the end of the year.

To try and solve this problem, two things are happening.

The first is that Fraser and his team are trying to find a cheaper and less complex way to build the mine and the 23-mile transport tunnel. I see this as potentially good news for shareholders.

The second thing that’s happening is that the company is looking far and wide for potential new investors.

Although there are hopes that the government will guarantee some of the funding, so far there’s been no indication that this is likely. I think this refinancing process is likely to be bad news for shareholders.

You see, Sirius Minerals has already failed to secure conventional debt financing, even though it was offering an interest rate of up to 15%.

Given this, I expect anyone who agrees to invest now will also want to own part (or all) of the business. This would increase the upside potential of their investment. But for existing shareholders, this could mean massive dilution. Sirius could agree to issue billions of new shares to anyone who will provide funding.

Does this matter?

You might say that the shares would rise so rapidly on news of any deal that concerns about dilution would be irrelevant. That’s possible.

But it’s worth remembering that the firm’s desperate need for money is an open secret. Any new investor is likely to drive a hard bargain. Existing bondholders also have claims that rank ahead of shareholders. The company could go into administration before a deal is done, wiping out shareholders completely.

Given what we know at the moment, I think there’s a good chance SXX shares have further to fall. I see the shares as a high-risk punt, at best. I’m continuing to avoid this stock.

Roland Head 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

British pound data
Investing Articles

Starting with nothing? Here’s why now is the perfect time to start building a passive income

Many are worried that 2026 might be a bad time to start investing in stocks and shares. Our Foolish author…

Read more »

ISA coins
Investing Articles

Decided not to bother with a Stocks and Shares ISA? You might be missing these 3 things!

With a fresh annual allowance for contributing to a Stocks and Shares ISA upon us, what might people who don't…

Read more »

GSK scientist holding lab syringe
Investing Articles

Why is everyone buying GSK shares?

GSK shares have been outperforming the FTSE 100 in 2026. Paul Summers takes a closer look and asks whether this…

Read more »

Middle-aged white man pulling an aggrieved face while looking at a screen
Investing Articles

£10,000 invested in easyJet shares at the start of 2026 is now worth…

Anyone buying easyJet shares will have endured a rough ride since January. Paul Summers wonders whether things could get even…

Read more »

Close-up of a woman holding modern polymer ten, twenty and fifty pound notes.
Investing Articles

5 years ago, £5,000 bought 2,645 Barclays shares. But how many would it buy now?

Despite delivering an impressive return since April 2021, Barclays' shares have lagged the FTSE 100's other banks. James Beard considers…

Read more »

Side of boat fuelled by gas to liquids, advertising Shell GTL Fuel
Investing Articles

5 years ago, £5,000 bought 354 Shell shares. But how many would it buy now?

When it comes to Shell’s numbers, most of them are impressive. And it’s no different when looking at the recent…

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

I asked ChatGPT if I should buy Aviva, Diageo or BAE Systems stock and it said…

Aviva, Diageo and BAE Systems shares are popular FTSE 100 picks. But which of the three does ChatGPT like the…

Read more »

Tesla car at super charger station
Investing Articles

SpaceX’s IPO threatens to leave the Tesla share price on the forecourt

As Elon Musk starts fuelling the engines for a SpaceX IPO, could the Tesla share price get left in the…

Read more »