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

1 quality growth stock to consider for an ISA while it’s down 41%

Find out which growth stock this writer has chosen to make one of the largest holdings in his Stocks and Shares ISA portfolio.

| 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.

Silhouette of a bull standing on top of a landscape with the sun setting behind it

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.

Markets might be at record highs, but that doesn’t mean all stocks are. Here’s one that I think is worth considering right now for a Stocks and Shares ISA.

Two concerns

Duolingo (NASDAQ:DUOL) is the global leader in digital language learning. But since May, its share price has fallen 41%.

This appears to be due to two main reasons. First, investors are worried about rising competition from ChatGPT and Google Translate (which has released a practice mode). Second, the stock’s forward price-to-sales ratio is still around 14. So it was very expensive before.

If the first concern is right, and Duolingo sees falling subscriber growth due to competition, then there might be significant risk here. I expect a lot of disruption from AI in future, so the firm could become a victim if it doesn’t keep innovating.

Already benefitting from AI

Fact is though, we see no evidence of disruption yet. In Q2, the language learning firm reported that daily active users grew 40% to 47.7m. And it expects full-year bookings to grow 32% (higher than previously expected).

Moreover, Duolingo was already an AI-based company before ChatGPT arrived. Its internal machine learning model, Birdbrain, uses algorithms to adjust lesson difficulty, predict user mistakes, and optimise vocabulary reviews. 

Meanwhile, Duolingo’s CEO Luis von Ahn is no stranger to computer science and AI. He invented reCAPTCHA, the system used to protect websites from spam and bots. Ironically, he sold this to Google before co-founding Duolingo! 

The company is also leveraging generative AI advancements to massively boost productivity. In April, it announced that it had used the tech to create 148 new language courses, more than doubling its current offering.

This was the largest increase in content in Duolingo’s history, and massively expanded its total addressable market. For example, speakers of 15 European languages like French, German, Italian, and Spanish can now learn Japanese, Korean, and Mandarin.

Meanwhile, speakers of Japanese, Korean, Mandarin, Vietnamese, Indonesian, Thai, and other Asian languages can now learn all of the top seven non-English languages. Previously many of these learners only had access to English.

Developing our first 100 courses took about 12 years, and now, in about a year, we’re able to create and launch nearly 150 new courses…This launch reflects the incredible impact of our AI and automation investments, which have allowed us to scale at unprecedented speed and quality.

Luis von Ahn

A bigger vision

Some investors see Duolingo as just a silly language app, with no real moat. But the company is also seeing success with its music, maths, and chess courses. It aims to eventually offer many other subjects.

In future, I can see people having to retrain a lot more due to AI job disruption. Duolingo could become the go-to education platform for this, as it offers a freemium model (no upfront costs).

Users only subscribe once they get serious about a subject (I’m currently a Duolingo Max subscriber). And learners can now add their Duolingo Score to LinkedIn profiles as a way to show their language proficiency.

As mentioned, the stock is still quite pricey. But the firm is already profitable and boasts a very healthy 34% free cash flow margin. I recently bought the dip, making it one of the top holdings in my SIPP/ISA portfolio.

Ben McPoland has positions in Duolingo. The Motley Fool UK has recommended Alphabet and Duolingo. 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 woman holding up three fingers
Investing Articles

Want to start investing in 2026? 3 things to get ready now!

Before someone is ready to start investing in the stock market, our writer reckons it could well be worth them…

Read more »

Investing Articles

Can the stock market continue its strong performance into 2026?

Will the stock market power ahead next year -- or could its recent strong run come crashing down? Christopher Ruane…

Read more »

Businessman hand stacking money coins with virtual percentage icons
Investing Articles

Here’s how someone could invest £20k in an ISA to target a 7% dividend yield in 2026

Is 7% a realistic target dividend yield for a Stocks and Shares ISA? Christopher Ruane reckons that it could be.…

Read more »

A quiet morning and an empty Victoria Street in Edinburgh's historic Old Town.
Investing Articles

How little is £1k invested in Greggs shares in January worth now?

Just how much value have Greggs shares lost this year -- and why has our writer been putting his money…

Read more »

Businessman using pen drawing line for increasing arrow from 2024 to 2025
Investing Articles

This cheap FTSE 100 stock outperformed Barclays, IAG, and Games Workshop shares in 2025 but no one’s talking about it

This FTSE stock has delivered fantastic gains in 2025, outperforming a lot of more popular shares. Yet going into 2026,…

Read more »

Close-up of British bank notes
Investing Articles

100 Lloyds shares cost £55 in January. Here’s what they’re worth now!

How well have Lloyds shares done in 2025? Very well is the answer, as our writer explains. But they still…

Read more »

Thoughtful man using his phone while riding on a train and looking through the window
Investing Articles

How much do you need in an ISA to target £2,000 a month of passive income

Our writer explores a passive income strategy that involves the most boring FTSE 100 share. But when it comes to…

Read more »

Investing Articles

£5,000 invested in a FTSE 250 index tracker at the start of 2025 is now worth…

Despite underperforming the FTSE 100, the FTSE 250 has been the place to find some of the UK’s top growth…

Read more »