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.

How to identify FTSE 100 shares with unusually high trading volume

Our writer takes a look into which metrics can be used to assess the FTSE 100 stocks that are making waves with investors this week.

| More on:
Person holding magnifying glass over important document, reading the small print

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.

Certain metrics can be used to gauge when FTSE 100 stocks are experiencing heavy trading volume. High volume is often the result of some notable development, such as an earnings call.

Financial news sites are usually the go-to for punters keen on the latest juicy gossip. But while they’re useful to a degree, they typically only cover companies that promise attention-grabbing headlines.

XXX

In the investment world, some of the best opportunities are found in lesser-known companies that seldom make the news. That’s why it pays to know which stocks are experiencing unusually high trading activity at any given moment.

Understanding relative volume

Normal trading volume is a measure of how much money is changing hands for a certain stock. On the Footise, Lloyds is almost always at number one, with Vodafone, BP or Barclays near the top. Many such mega-cap stocks experience high volume even when nothing interesting is happening.

However, to find out which stocks are unusually popular in a given week, I check the relative volume (RVOL). This indicator calculates current volume in comparison to average volume over a certain period. A factor of 1 means it’s trading at the usual rate. Anything higher or lower indicates a discrepancy.

For example, if a stock is experiencing volume that’s 50% higher this week than average, its weekly RVOL will be 1.5. The timeframe can be anything from a minute to a month.

FTSE 100 stocks with high weekly RVOL

This week, the three Footsie stocks with the highest weekly RVOL were Melrose Industries (LSE: MRO) (1.68), Londonmetric Property (1.65) and Intermediate Capital Group (1.58). Londonmetric took a hit from BlackRock, which decreased its voting rights, and ICG got a boost after JPMorgan put in an Overweight rating on the stock.

But of the three, Melrose experienced the largest daily gains yesterday, up 6.45%. Those two metrics together tell me something big is happening at the aerospace and defence company.

Let’s have a look.

Missed expectations

Melrose released its FY2024 earnings data last week, leading to a 92% daily spike in trading volume. However, it was mostly selling, which wiped 11.7% off the share price before this week’s mild recovery.

The company posted a statutory pre-tax loss of £106m and only £3.47bn in revenue — 2.48% below expectations. Subsequently, it lowered revenue estimates for the mid-term, which likely led to the brief sell-off.

Overall, I don’t think the results are too bad and the price will probably bounce back quickly. My main concern is the potential impact of US trade tariffs. CEO Peter Dilnot feels confident they “aren’t a material threat” but I’m wary of President Trump’s unpredictable nature. And there’s the added risk of US defence budget cuts, which could hurt profits.

I was surprised to see that most analysts haven’t adjusted their outlook. Their average 12-month price target is still around 713p — a 36% increase. That’s almost four times higher than when I last covered Melrose in December.

Plus, it raised dividends by 20% from 5p per share to 6p – a strong indication of its dedication to shareholders. I must say, the low price and 20% dividend boost make it attractive. If tariffs threats ease off, it’s certainly a stock worth considering.

Relative trading volume can be a quick way to mentally shortlist stocks with recently notable events.

Mark Hartley has positions in Bp P.l.c. and Lloyds Banking Group Plc. The Motley Fool UK has recommended Barclays Plc, Lloyds Banking Group Plc, LondonMetric Property Plc, and Vodafone Group Public. 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 »