We have some exciting news to share! The Motley Fool UK has now become The Twelfth Magpie -- an independent, UK-owned company, led by our long-serving UK management team — Mark Rogers, Chris Nials and Heather Adlington. In practical terms, it’s the same team you know, now fully focused on serving our UK readers and members.

Just as importantly, our approach remains unchanged: long-term, jargon-free, and on your side. This site is our new home, and there will be extra tweaks made across the coming few days as we settle in. So if anything looks a little off, please bear with us!

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.

What’s going on with the Renalytix share price?

The Renalytix share price rose sharply yesterday but has still lost 90% in a year. Christopher Ruane looks into why and considers his next move.

| More on:
Young woman working at modern office. Technical price graph and indicator, red and green candlestick chart and stock trading computer screen background.

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.

It has been a horrible year to be a shareholder in kidney diagnostic specialist Renalytix (LSE: RENX). Over the past 12 months, the Renalytix share price has collapsed 90%. It jumped 15% yesterday, though at the time of writing this on Wednesday, it has been sliding again.

What is going on – and how ought I to respond as a shareholder?

XXX

Good news

The reason for yesterday’s jump was the release of some good news by the company.

A new study showed that patients in the early stages of diabetic kidney disease who were being treated with the company’s flagship KidneyIntelX tool received higher follow-up medical visit rates within a month than those who were not. That may suggest that the tool’s diagnostic capabilities enable quicker treatment than for patients whose kidney disease goes undiagnosed for longer.

This is the latest in a growing pile of research that provides a clinical basis for doctors to use the tool.

Bad news

However, fast forward 24 hours to today and things already look less positive for the business. Renalytix released its latest quarterly results and they contain a lot of red ink.

The period saw a net loss of $12m. Revenue was only $969,000. Although that is fairly modest, it is more than double what Renalytix achieved in the same period last year. So revenue growth far outstripped the 18% increase in net loss.

Nonetheless, the mismatch between revenues and losses is huge. Renalytix is spending vast sums of money to make relatively modest sales. In the long term, that is not a sustainable business model.

Looking to the future

I think that mismatch between the top and bottom lines of the company’s profit and loss account explains the implosion of the Renalytix share price over the past year.

Spending heavily may be necessary to build the sales base for the company’s products. But if it is spending far more than it is making in sales, it will not be profitable. Instead, it will burn even more cash, raising the risk of shareholder dilution or ultimately even bankruptcy.

The latest trading statement contained an outlook with disappointingly little forward-looking analysis. Rather defensively, in my view, it reminded readers that building scale for the company’s product sales involves a lot of work and “it sometimes seems this set of milestones takes a long time to accomplish”.

That sounds to me like a cloaked admission that business development is not moving at the same high pace as cash burn, which is obvious to anyone who looks at the company accounts.

Although the company announced plans in August to reduce annual expenditures by over $12m, in the most recent quarter its general and administrative expenses actually inched up.

The share price could fall further

At the end of September, the company had cash and cash equivalents of $31m. Liquidity is not an immediate risk, but if costs continue to outstrip revenues substantially, that will change.

I think Renalytix has powerful technology. The latest research further shows that it could be helpful for hospitals to adapt it. But the business model remains woeful. I am keeping my shares because it is hardly worth selling them at the current price, given the dealing fees involved. But I will definitely not be buying any more!

C Ruane has positions in Renalytix AI 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

Friends and sisters exploring the outdoors together in Cornwall. They are standing with their arms around each other at the coast.
Investing Articles

£503 buys 14 shares in this FTSE 250 stock that returned 23.9% annually for the last 15 years

This FTSE 250 stock has averaged a huge return for 15 years. At today's price, £503 buys 14 shares. But…

Read more »

Black woman using loudspeaker to be heard
Investing Articles

£1,000 buys 25 shares in this FTSE 100 stock that’s returned 29.2% annually for the last 10 years

This FTSE 100 mining stock has returned close to 30% a year for a decade. At 3,995p, £1,000 buys 25…

Read more »

Female student sitting at the steps and using laptop
Investing Articles

Down 47%, is this growth stock finally worth buying in May?

With a £288m order book and a hidden pipeline of defence and nuclear contracts, is this growth stock now too…

Read more »

House models and one with REIT - standing for real estate investment trust - written on it.
Investing Articles

2 REITs yielding 7%+ to consider for passive income in 2026

A REIT backed by the NHS and another backed by Tesco and Sainsbury's with both yielding 7%+. Here's why I'm…

Read more »

Woman riding her old fashioned bicycle along the Beach Esplanade at Aberdeen, Scotland.
Investing Articles

Just 97 shares of this UK dividend stock generate £238 in passive income

A 5.7% yield, £238 in passive income from just 97 shares, and one of the most divisive dividend stocks on…

Read more »

ISA coins
Investing Articles

£10,000 in an ISA generates a second income of…

The London Stock Exchange is home to some of the world's most generous dividends. But how big a second income…

Read more »

Shot of a senior man drinking coffee and looking thoughtfully out of a window
Investing Articles

Expert recommendations: 2 top income stocks yielding 7%+!

With yields of 7.2% and 7.8% respectively, these two income stocks are catching the eyes of institutional analysts. Should investors…

Read more »

Illustration of flames over a black background
Investing Articles

3 top income-focused stocks to buy in May 2026, according to experts

Looking for a stock to buy for income in May 2026? Experts have flagged these three UK dividend shares as…

Read more »