Why Appen, Brainchip, Fortescue, and Sayona Mining shares are sinking today

These ASX shares are being punished by the market on Monday.

| More on:
Dollar sign in yellow with a red falling arrow in front of a graph, 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

The S&P/ASX 200 Index (ASX: XJO) is having a strong start to the week. In afternoon trade, the benchmark index is up 0.6% to 7,156 points.

Four ASX shares that have failed to follow the market higher today are listed below. Here's why they are dropping:

Appen Ltd (ASX: APX)

The Appen share price is down 30% to $1.56. Investors have been hitting the sell button today after the artificial intelligence data services company released another disappointing result. For the six months ended 30 June, Appen reported a 24% decline in revenue to US$138.9 million and an underlying net loss after tax of US$24.2 million. It also now expects its second-half revenue to be softer than previous guidance.

Brainchip Holdings Ltd (ASX: BRN)

The Brainchip share price is down almost 11% to 29 cents. This semiconductor company has released its half-year results and posted revenue of just US$115,606. And with Brainchip burning US$16.85 million on expenses during the six months, its losses doubled to US$17.15 million for the period. Management described its results as "clearly not acceptable." The market certainly agrees.

Fortescue Metals Group Ltd (ASX: FMG)

The Fortescue share price is down 4.5% to $20. This follows the release of a full-year result that fell short of the market's expectations. In addition, the sudden exit of its CEO this morning appears to have spooked investors.

Sayona Mining Ltd (ASX: SYA)

The Sayona Mining share price is down a massive 27% to 9.1 cents. This morning, this lithium miner announced the immediate exit of Brett Lynch as managing director and CEO. Sayona Mining advised that Lynch has resigned for personal reasons and "will facilitate a mutually agreed handover period." Its shares are now down by two-thirds over the last 12 months.

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 positions in and has recommended Appen. 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 business man in a suit holds his hand over his eyes as he bows his head in a defeated post suggesting regret and remorse.
Share Fallers

Why Core Lithium, Paladin Energy, Pro Medicus, and Rio Tinto shares are dropping today

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

Read more »

Bored man sitting at his desk with his laptop.
Share Fallers

Why Ansell, Elsight, Ramelius, and SGH shares are falling today

These shares are missing out on the market's move higher on Thursday.

Read more »

Frustrated stock trader screaming while looking at mobile phone, symbolising a falling share price.
Share Fallers

Why Bellevue Gold, Harvey Norman, Karoon Energy, and Westpac shares are falling today

These shares are having a tough time on hump day. But why?

Read more »

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 »