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.

Why did the Avacta share price crash in 2021?

The Avacta share price has crashed by 50% in the last three months. Zaven Boyrazian investigates what’s causing this downward trajectory.

| More on:

You’re reading a free article with opinions that may differ from The Twelfth Magpie’s Premium Investing Services. Become a member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn more, and get a free 'Best Buy Now' stock!.

The Avacta (LSE:AVCT) share price has had a pretty rough time recently. Despite reaching an all-time high earlier this year, the stock is down almost 50% in the last three months, wiping out all of the gains made over the previous year. But what caused this growth stock to suddenly make a U-turn? And is this a buying opportunity for my portfolio? Let’s take a closer look.

Progress seen

Despite what the Avacta share price might suggest, the underlying business seems to be making good progress. The latest results from clinical trials show that Avacta’s lateral flow antigen tests can successfully detect the Delta variant of Covid-19. This is particularly exciting as competing tests seems to have a low detection rate for this strain of the virus.

Should you buy Avacta Group Plc shares today?

Before you decide, please take a moment to review this report first. Despite ongoing uncertainties from US tariffs to global conflicts, Mark Rogers and his team believe many UK shares still trade at substantial discounts, offering savvy investors plenty of potential opportunities to learn about.

That’s why this could be an ideal time to secure this valuable research – Mark’s analysts have scoured the markets to reveal 5 of his favourite long-term ‘Buys’. Please, don’t make any big decisions before seeing them.

Combining this milestone with the newly signed distribution agreement with Calibre Scientific, it seems Avacta’s revenue growth should be able to continue meeting expectations. Needless to say, that’s fantastic news for this biotech business. So why did the share price crash?

The Avacta share price has its risks

The fall of the Avacta share price

I’ve previously looked at this company and highlighted that the stock was carrying an exceptionally lofty valuation. Shareholder expectations were unreasonably high, in my opinion. And unsurprisingly, at the first sign of trouble, many jumped ship.

Despite efforts to achieve a CE Mark for its antigen testing kit, Avacta could not secure it in May as initially planned. Without this regulatory approval, its products cannot be used throughout Europe. And signing a distribution agreement for a product that can’t be distributed didn’t exactly entice investors. What followed was just over two months of decline for the Avacta share price.

What’s next?

In mid-July, the firm finally received an ISO 13485 certification to use its Affimer reagents in its lateral flow tests. As a result, a CE Mark was transferred to the company allowing its tests to be used by professionals throughout the UK and Europe. That’s one of the main reasons why the share price has started to stabilise. After all, with alternative lateral flow tests being far less effective, the company now has an enormous growth opportunity before it.

That might be an indicator of a buying opportunity for this growth stock. However, upon closer inspection, I’m still not tempted. Why? Because despite the recent crash, the Avacta share price still looks too expensive. Today, the company has a market capitalisation of just over £320m. And yet total revenue for the year is expected to be only around £4.3m with profits nowhere in sight. That places the price-to-sales ratio at an enormous value of 74!

Therefore I’m keeping Avacta on my watchlist for now. As promising as this business and its future potential may be, I believe there are far cheaper growth opportunities to be found elsewhere.

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

photo of Union Jack flags bunting in local street party
Investing Articles

Here’s what £20,000 invested in the FTSE 100 in July 2025 is worth today…

Harvey Jones flags up just how well the FTSE 100 has done over the last year, and picks out a…

Read more »

Investing Articles

Could the BAE Systems share price really hit £26 in July 2027? Here’s what the experts say…

The BAE Systems share price stands at around £19 today but there are some really upbeat broker forecasts out there.…

Read more »

Investing Articles

£2,000 invested in penny stock Hardide at the start of 2026 is now worth…

Penny stock Hardide has generated blockbuster returns for investors in 2026. The big question is – does it have further…

Read more »

Three signposts pointing in different directions, with 'Buy' 'Sell' and 'Hold' on
Dividend Shares

Legal & General vs Investec: which is the best stock for second income?

Jon Smith talks about two of the top FTSE 100 dividend shares, ranked by yield, and weighs up which could…

Read more »

UK supporters with flag
Investing Articles

Great news for Rolls-Royce shareholders this week!

Rolls-Royce shares have jumped back above 1,400p this week. What has driven the FTSE 100 stock higher? And can it…

Read more »

Tree lined "tunnel" in the English countryside of West Sussex in autumn
Investing Articles

Here’s 1 FTSE 100 stock I’ll happily hold for decades

Identifying stocks I’d be comfortable holding for 10-20 years can be a daunting task, but the FTSE 100 has many…

Read more »

Arrow symbol glowing amid black arrow symbols on black background.
Investing Articles

By mid-2027, analysts expect $2,913 in Micron stock to be worth

Could investing in Micron stock today be like investing in Nvidia three years ago when it was trading at significantly…

Read more »

Young Asian woman with head in hands at her desk
Investing Articles

£5,000 invested in SpaceX stock after the IPO is now worth…

To the surprise of many, SpaceX stock has fallen below its IPO price of $135 meaning that those who bought…

Read more »