Is the drop in the Open Orphan (ORPH) share price a buying opportunity?

The Open Orphan (ORPH) share price has fallen 25% in two months! Zaven Boyrazian investigates what caused this drop, and if now is a good time to buy.

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.

The Open Orphan (LSE:ORPH) share price has been producing some pretty lacklustre returns recently. Since around mid-April, the stock has dropped by 25%. Although it is worth noting that it’s up by nearly 190% over the past 12 months. Still, the question remains, why is the ORPH share price falling? And is this a buying opportunity?

A demerger on the horizon

There are undoubtedly many factors influencing the ORPH share price. However, it seems one in particular is affecting it. And that is the planned separation of the business. Around the same time as the stock started falling, Open Orphan announced its intention to spin off its drug development division from its clinical trial services business. And following shareholder approval at the end of the month, the separation progress began.

Why would this affect the share price? Apart from costs related to the task, several of the firm’s promising assets are being moved out of the balance sheet. So I think the market is correcting itself to account for this.

The new spin-off has been titled Poolbeg Pharma. It is currently in the process of becoming listed on the Alternative Investment Market (AIM). Its flagship project is POLB-001 — a new treatment for severe influenza, ready for Phase II clinical trials. This is particularly exciting as the management team has estimated that this treatment’s addressable market size is around $800m. That’s more than four times the current market capitalisation of Open Orphan based on the share price today.

Meanwhile, the firm’s pharmaceutical services division will remain as part of Open Orphan. The intention is to allow both companies to operate independently and thus reduce the risk profile of the core business. After all, developing new drugs is a long and expensive process that doesn’t always end well. Existing investors will receive shares in Poolbeg once it becomes listed. And I would expect a good portion of the lost value from the ORPH share price to re-emerge in the form of Poolbeg stock.

The Open Orphan ORPH share price has its risks

The Open Orphan (ORPH) share price: time to buy?

I’ve previously explored my excitement around Open Orphan’s Disease in Motion platform, which will remain a part of the original business. As a reminder, this project allows clients to access an enormous database of clinical, immunological, virological, and digital biomarkers. This sort of data is exceptionally useful during the drug development process and can significantly accelerate research. That’s a powerful advantage to have over other CROs.

For this reason, I would typically see the recent fall in the ORPH share price as a definite buying opportunity. However, when bringing the demerger into the picture, things get a bit more complicated. The prospect of an $800m drug is exciting. But there remains a long road ahead.

Completing Phase II and Phase III trials will be a multi-year process during which many things can go wrong. To make matters worse, there are currently 32 other competing influenza Phase II drug trials and a further 16 already in Phase III. Needless to say, the competition remains fierce. And with no other medicines currently in its development portfolio, Poolbeg looks quite risky as an investment in its current state.

Personally, I’m not interested in having Poolbeg Pharma in my portfolio. At least, not at the moment. Therefore, even though the ORPH share price has fallen, I won’t be buying any shares until after the demerger is complete.

Zaven Boyrazian 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

Group of young friends toasting each other with beers in a pub
Investing Articles

FTSE 100 shares: has a once-a-decade chance to build wealth ended?

The FTSE 100 index has had a strong 2025. But that doesn't mean there might not still be some bargain…

Read more »

Passive income text with pin graph chart on business table
Investing Articles

I asked ChatGPT for its top passive income ideas for 2026 and it said…

Stephen Wright is looking for passive income ideas for 2026. But can asking artificial intelligence for insights offer anything valuable?

Read more »

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

Here’s how a 10-share SIPP could combine both growth and income opportunities!

Juggling the prospects of growth and dividend income within one SIPP can take some effort. Our writer shares his thoughts…

Read more »

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

The stock market might crash in 2026. Here’s why I’m not worried

When Michael Burry forecasts a crash, the stock market takes notice. But do long-term investors actually need to worry about…

Read more »

Person holding magnifying glass over important document, reading the small print
Investing Articles

Is this FTSE 250 retailer set for a dramatic recovery in 2026?

FTSE 250 retailer WH Smith is moving on from the accounting issues that have weighed on it in 2025. But…

Read more »

Young Black woman using a debit card at an ATM to withdraw money
Investing Articles

I’m racing to buy dirt cheap income stocks before it’s too late

Income stocks are set to have a terrific year in 2026 with multiple tailwinds supporting dividend growth. Here's what Zaven…

Read more »

ISA Individual Savings Account
Investing Articles

Aiming for a £1k passive income? Here’s how much you’d need in an ISA

Mark Hartley does the maths to calculate how much an investor would need in an ISA when aiming for a…

Read more »

Two business people sitting at cafe working on new project using laptop. Young businesswoman taking notes and businessman working on laptop computer.
Investing Articles

Is investing £5,000 enough to earn a £1,000 second income?

Want to start earning a second income in the stock market? Zaven Boyrazian breaks down how investors can aim to…

Read more »