Amdocs shares halve after T-Mobile legal dispute forces guidance cut

Amdocs shares halved on the Frankfurt exchange on November 4 after a legal dispute with T-Mobile forced the software vendor to cut its revenue guidance by as much as 17.9% for the fiscal year ending September 2027. The stock traded at its lowest level since 2014 by mid-morning UK time.

CEO Shimie Hortig described the dispute as generating "major headwinds" for the company. He blamed it for a steep decline in the sales and profitability outlook. Revenues are now expected to fall between 14.3% and 17.9%, partly reflecting planned exits from some business activities. Even excluding those exits, sales are forecast to drop between 7% and 11%. Hortig told analysts to expect earnings per share to fall between 26% and 30%.

What is the dispute about?

The subject remains unclear. Hortig said its "confidential nature" prevented disclosure of details. He confirmed the dispute centers on a recently signed agreement and escalated into legal action last quarter. Amdocs is "prepared to fiercely defend our positions, including in arbitration," he told analysts.

The commercial backdrop worsens the picture. Amdocs has also seen a reduction in what it calls "discretionary spending" by the US operator. Work on an integration project tied to T-Mobile's acquisition of USCellular last year appears finished. For practitioners, the practical signal is simple: work for T-Mobile seems to be evaporating.

T-Mobile has not terminated its agreement, Hortig insisted. T-Mobile's press office had not responded to a request for comment at publication time.

How exposed is Amdocs to T-Mobile?

T-Mobile accounts for about a fifth of Amdocs' sales, according to Omdia estimates based on Amdocs' own guidance. James Crawshaw, a practice leader at Omdia, said the contribution already fell by almost three percentage points in the last fiscal year. It could fall far more sharply after this warning.

Bank of America Securities analyst Tal Liani pressed the point on the results call. "Shimie, what a way to start the career as a CEO," he said, noting Hortig succeeded Shuky Sheffer as recently as March. Liani suggested T-Mobile had "decided to do things in a different way" and that other customers might follow.

"There are fundamental issues behind T-Mobile," Liani said. "What is the risk that another customer – a big customer, you have six big customers overall – but what's the risk that some other customers will go through the same process and terminate the relationship also with Amdocs?"

Is the rest of the business healthy?

Hortig's answer was that T-Mobile is an isolated case, not a harbinger of wider customer backlash. Final-quarter results for the recently ended fiscal year showed sales up 3.6% to nearly $4.7 billion, with net profit up 1% to $791.7 million. Excluding T-Mobile-related effects, the rest of the business will grow at a mid-single-digit rate this year, he said.

He named several customers still committed to Amdocs. "Just think about the AT&T agreement that we signed this quarter, a major partnership to accelerate the implementation of aOS and the AT&T tools," he said. The aOS is Amdocs' agentic operating system, designed to coordinate agent activities in telecom back-office systems. Liberty Latin America, Globe in the Philippines and the UK's VodafoneThree were cited as other committed telcos.

"Again, I cannot go into the details of this case, but I can tell you that it's an isolated case," Hortig said. "And the rest of the business is growing very nicely."

Does AI threaten the model?

The deeper investor fear is that AI poses an existential threat to Amdocs and other large software vendors. Some industry commentators view generative AI tools available outside Amdocs as a challenge to its business model, which has historically depended heavily on consulting revenue.

"More than 80% of its revenue depends on services-driven delivery, not standalone software licenses," said Danielle Rios, CEO of rival software firm Totogi, in a February blog post. "When software replaces the discovery, configuration and integration work humans used to do, consulting-heavy economics stop making sense. And once that happens, pricing power erodes with it."

If this week's dispute connects to that shift, Amdocs faces more than a single customer problem. Shareholders will watch whether arbitration details surface and whether the remaining five large customers stay put through the fiscal year ending September 2027.