What does the Optus fumble mean for ASX telco shares?

Experts are already tallying up the numbers on how much Optus' troubles could boost rivals.

| More on:
A man pumps fist while using mobile phone in the street.

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

As Optus begins to pick up the pieces after its 14-hour-long outage on Wednesday, pundits are analysing what the debacle means for rival ASX telco shares.

Laying claim to around 10 million customers nationwide, Optus ranks second in market share at around 31%. However, the telecommunications company may see its share of the pie shrink as competitors capitalise on its recent mishap.

Sales surge for ASX telco shares at Optus' cost

Optus has garnered unwanted attention only a year after a damaging data breach.

According to subsequent reports, around 10% of Optus customers switched networks after the cyber attack. If I've done my math correctly, that means the large majority (90%) stuck with the Singtel-owned network operator.

Yet, it seems Wednesday's outage is the straw that broke the camel's back for some who gave Optus a second chance.

As reported by 9 News, TPG Telecom Ltd (ASX: TPG) — and its various brands — experienced its busiest sales day in the last year. A spokesperson from Vodafone (a subsidiary of TPG) noted a four-fold increase in activity amid Optus' network nightmare.

ASX:TPG
$3.97 $0.02 (0.5%) 13 January 2026 at 4:00:00 pm AEDT

Likewise, the mobile offering from Kogan.com Ltd (ASX: KGN) — aptly named Kogan Mobile — reported a 400% rise in eSim sales on Wednesday. A Kogan spokesperson said, "It was actually Kogan Mobile's highest volume of eSim sales in a day this financial year."

ASX:KGN
$3.89 $0.02 (0.5%) 13 January 2026 at 4:00:00 pm AEDT

What about Optus' biggest competitor, Telstra Group Ltd (ASX: TLS)? Analysts at JP Morgan believe even if 2.5% of Optus customers switch to Telstra, the larger ASX telco share could see its earnings before interest, taxes, depreciation, and amortisation (EBITDA) boosted by $125 million in FY25.

The Telstra share price lifted 1.29% amid the mid-week fiasco.

Will the big contracts cut the cord?

A significant risk (or potential reward for competing ASX telco shares) still hangs in the air for Optus.

While an outflow of everyday customers would hurt, the most devastating fallout for the Singaporean telco could be the possible loss of corporate and government contracts. These include deals with the Department of Defence, major banks, and the South Australian Government.

We're talking big contracts here. For example, Optus won a contract for satellite connectivity last year with the Department of Defence worth $405 million.

This could present an enormous opportunity for ASX telco shares if they snatch these often higher margin contracts off of Optus. However, nothing has materialised yet, with much of the situation still unfolding.

Motley Fool contributor Mitchell Lawler 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 Kogan.com. The Motley Fool Australia has positions in and has recommended Telstra Group. The Motley Fool Australia has recommended Kogan.com and Tpg Telecom. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on Communication Shares

Middle age caucasian man smiling confident drinking coffee at home.
Communication Shares

$20,000 of Telstra shares can net me a $1,774 passive income!

This business is projected to deliver major income…

Read more »

A man casually dressed looks to the side in a pensive, thoughtful manner with one hand under his chin, holding a mobile phone in his hand while thinking about something.
Communication Shares

This is the stock price I would buy Telstra shares at

What is the right price for Telstra?

Read more »

A couple stares at the tv in shock, with the man holding the remote up ready to press a button.
Communication Shares

Are these 2 ASX 200 media shares a bargain?

Challenges remain, but analysts see upside for the battered stocks.

Read more »

a newsboy wearing historical costume of peaked cap and braces yells into an old fashioned megaphone while holding a newspaper in one hand, a so-called newsboy of previous eras when newsboys sold newspapers on street corners.
Communication Shares

Are Nine Entertainment or News Corp shares a better buy?

Should you accumulate these media shares at 52-week lows?

Read more »

Person handing out $50 notes, symbolising ex-dividend date.
Communication Shares

Forecast: Here's what $10,000 invested in Telstra shares could be worth next year

Let’s look at the potential of Telstra shares rising.

Read more »

A woman wearing headphones looks delighted and animated on news she's receiving from her mobile phone that she is holding close to her face.
Communication Shares

The pros and cons of buying Telstra shares in 2026

Let’s look at both the positives and negatives of owning Telstra shares.

Read more »

stock growth chart
Healthcare Shares

Will CSL shares crash again in 2026?

CSL shares have fallen almost 40% in 2025. Investors are now asking if the worst is already behind the stock.

Read more »

A young bank customer wearing a yellow jumper smiles as she checks her bank balance on her phone.
Communication Shares

Aussie Broadband shares sink 2% on ACCC report

The ruling is expected to result in a small reduction of the company’s EBITDA in the coming years.

Read more »