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.

Here’s Why ARM Holdings plc Could Fall 64%

ARM Holdings plc (LON:ARM) could fall if it fails to meet forecasts.

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!.

There is no doubt that ARM (LSE: ARM) (NASDAQ: ARMH.US) is a high-flying tech stock. However, the company’s shares are expensive.

In particular, ARM is currently trading at a lofty historic P/E of 44 and a forward P/E of 38. Further, the company is trading at a PEG ratio of 2.7, implying that the stock is expensive for the growth it is expected to generate.

Should you buy Rolls Royce 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.

Unfortunately, this high valuation leaves little room for disappointment and investors could see the value of their holdings fall by up to 64% if the company fails to meet City targets.

Starting to slowARM Holdings

But ARM’s performance is already starting to slow and some are starting to questions the company’s sky-high valuation. Indeed, the company’s total first-quarter dollar revenues rose by 16% compared to year-ago figures, although this rate of growth was less than the 26% rise reported during the first quarter of 2013.

Total first quarter dollar revenues rose by 16% year-over-year or 10% in sterling terms. This compares with a 26% dollar and 28% sterling rise for the first quarter of 2013.

Still, ARM’s management had already warned that the first quarter would be slower than usual, as slower sales of chips for high-end smartphones would drag on performance. 

Nevertheless, ARM’s sales are likely to slow over the longer term as, the larger the company becomes, the harder it will become for management to find growth opportunities. 

Not all bad news

Having said all of the above, ARM’s first quarter update contained some good news. The group’s management remained upbeat about the rest of the year and revealed that outlook for the semiconductor industry should improve during the second quarter.

With this being the case, ARM expects the company’s performance this year to be in line with City expectations.

How low can it go?

The question is, if ARM fails to meet City expectations, how far will the company’s shares fall? Well, ARM’s main peer, Intel currently trades at a forward P/E of 13.7, if ARM fell to this level it shares would be worth, 326p; a 64% slump from current levels.

However, ARM’s earnings are is still growing rapidly, while Intel’s growth is slowing (mainly due to ARM’s dominance within the sector). With this in mind, it doesn’t really make sense to compare the two companies.

Nevertheless, it is possible to place a valuation on ARM based on the company’s prospective growth. For example, the PEG ratio is used to establish whether or not a stock is priced appropriately based on the company’s rate of growth. A PEG of less than one implies growth at a reasonable price. A ratio above one implies that the company is expensive, based on its predicted growth rate.  

So, based on the fact that ARM’s earnings per share are expected to expand 14% this year, if ARM’s valuation fell to a PEG of one, indicating that growth was priced in, the company would trade at a P/E of 14. A P/E of 14 implies a share price of 333p; a fall of around 63% from current levels. 

Rupert does not own any share mentioned within this article. The Motley Fool has recommended shares in Arm Holdings. 

More on Investing Articles

UK supporters with flag
Investing Articles

Are these the most undervalued UK shares? ChatGPT thinks so

When James Beard asked a well-known artificial intelligence program to identify some UK value shares, he was given an interesting…

Read more »

Rolls-Royce's Pearl 10X engine series
Investing Articles

Where will Rolls-Royce shares be 12 months from now?

Can Rolls-Royce shares continue to outperform over the next 12 months? Here’s why analysts are sounding positive about the FTSE…

Read more »

Businessman with tablet, waiting at the train station platform
Investing Articles

Did Raspberry Pi just become the best growth share on the UK market?

Jon Smith explains why he's excited about Raspberry Pi, and talks through why he believes the stock could keep going…

Read more »

Investing Articles

How much do you need in a Stocks and Shares ISA to aim for a second income of £675 a month

Harvey Jones shows how the size of the yield on your Stocks and Shares ISA will partly determine how much…

Read more »

DIVIDEND YIELD text written on a notebook with chart
Investing Articles

Here’s why Legal & General is still the UK’s most popular dividend stock

There are good reasons why dividend investors have been hoovering up Legal & General stock in 2026, but there are…

Read more »

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

How to target almost £1,000 a month in second income with a monthly investment strategy

Mark Hartley does the maths to work out how much you should invest in the stock market each month if…

Read more »

Businesswoman calculating finances in an office
Investing Articles

Below £8, this high-growth UK fintech stock looks like a bargain to me

This UK stock has fallen nearly 30% in the space of two months. And Edward Sheldon sees a lot of…

Read more »

British pound data
Investing Articles

Ceres Power shares just crashed 35%! Time to consider buying?

Ceres Power shares, which have been on a tear in 2026, have recently pulled back. Is this a great opportunity…

Read more »