Why 4Medical, Guzman Y Gomez, Lynas, and Predictive Discovery shares are falling today

These shares are ending the year in the red. But why?

| More on:
Frustrated stock trader screaming while looking at mobile phone, symbolising a falling share price.

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

Key points

  • 4DMedical shares are down 3%, likely due to profit-taking after a remarkable year of over 700% gains driven by regulatory approvals and significant contract wins for its cutting-edge technologies.
  • Guzman Y Gomez saw a 1.5% drop amid investor concerns over valuation and struggles in the U.S. market, with shares dipping around 46% year to date, reflecting worries about its growth prospects in a key market.
  • Predictive Discovery's 3% decline comes unexpectedly after Robex Resources shareholders approved a merger, suggesting market caution as the companies aim to consolidate major gold projects in West Africa into a significant production powerhouse by 2029.

In afternoon trade, the S&P/ASX 200 Index (ASX: XJO) is on track to end the shortened session with a small decline. At the time of writing, the benchmark index is down 0.1% to 8,706.7 points.

Four ASX shares that are falling more than most today are listed below. Here's why they are dropping:

4DMedical Ltd (ASX: 4DX)

The 4DMedical share price is down 3% to $3.93. This is despite there being no news out of the medical technology company on Wednesday. However, it is worth noting that its shares have been on fire this year, so there's potential for some profit-taking going on today. For example, since the start of the year, 4DMedical shares have risen by an astonishing 700%+. This has been driven by regulatory approval milestones and major contract winds for its exciting technology.

Guzman Y Gomez Ltd (ASX: GYG)

The Guzman Y Gomez share price is down 1.5% to $21.58. This Mexican food focused quick service restaurant operator's shares have come under significant pressure this year. So much so, they are now down by approximately 46% year to date. This has been driven by valuation concerns and its disappointing performance in the United States market. Investors appear to believe that its expansion in the massive market could be a flop.

Lynas Rare Earths Ltd (ASX: LYC)

The Lynas Rare Earths share price is down 1.5% to $12.40. This could also be due to profit-taking from some investors. After all, even after today's weakness, this rare earths producer's shares are up almost 90% since the start of the year. Supply concerns have given rare earths stocks a major boost in 2025.

Predictive Discovery Ltd (ASX: PDI)

The Predictive Discovery share price is down 3% to 74.2 cents. This is despite news that Robex Resources (ASX: RXR) shareholders have approved the proposed merger with Predictive Discovery. The gold miner's CEO and managing director, Andrew Pardey, was very pleased with the news. He said: "We are delighted with the strong support shown by Robex shareholders for the Transaction, which has the potential to create significant value for shareholders of the combined company. The Transaction consolidates two of the largest, lowest cost and most advanced gold projects in West Africa – Bankan and Kiniero – within a combined group with the execution capability and funding strength to grow into a significant gold producer with expected production of more than 400,000oz per annum1 by 2029."

Motley Fool contributor James Mickleboro has no position in any of the stocks mentioned. The Motley Fool Australia's parent company Motley Fool Holdings Inc. has recommended Lynas Rare Earths Ltd. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on Share Fallers

A worried man holds his head and look at his computer.
Share Fallers

Why Andean Silver, CBA, Life360, and Silex shares are dropping today

These shares are out of form on Tuesday. But why?

Read more »

Person with thumbs down and a red sad face poster covering the face.
Share Fallers

Why 4DMedical, Coronado Global, Metallium, and WiseTech Global shares are falling today

These shares are starting the week in the red. But why?

Read more »

Group of entrepreneurs feeling frustrated during a meeting in the office. Focus is on man with headache.
Share Fallers

5 worst ASX All Ords shares of 2025, and why brokers rate 4 of them a buy

The ASX All Ords rose by 7.11% in 2025 but as always, there were losers in the pack.

Read more »

A man sits in despair at his computer with his hands either side of his head, staring into the screen with a pained and anguished look on his face, in a home office setting.
Share Fallers

Why Capstone Copper, Life360, Northern Star, and Weebit Nano shares are falling today

These shares are having an unhappy start to 2026.

Read more »

a man clasps his hand to his forehead as he looks down at his phone and grimaces with a pained expression on his face as he watches the Pilbara Minerals share price continue to fall
Share Fallers

These were the worst performing ASX 200 shares in 2025

Shareholders of these shares will be hoping for better in 2026.

Read more »

A man in a suit and glasses guffaws at his computer screen in bewilderment.
Share Fallers

Shocking declines: Australian shares that disappointed investors in 2025

Big names, big losses. These Australian shares shocked investors with steep declines in 2025.

Read more »

A man slumps crankily over his morning coffee as it pours with rain outside.
Share Fallers

Why Evolution Mining, FireFly, Unico Silver, and Weebit Nano shares are tumbling today

These shares are having a poor session on Tuesday. What's going on?

Read more »

Investor covering eyes in front of laptop
Share Fallers

Why are ASX silver stocks getting hammered today?

ASX silver stocks are closing out the final full trading day of 2025 with a whimper. But why?

Read more »