Deutsche Telekom Faces Twin Storms: Corruption Probe and Merger Jitters

Shares drop 20% from highs as corruption probe at fiber unit and potential T-Mobile US restructuring create a perfect storm for investors.

Investors in Deutsche Telekom are navigating a perfect storm of bad news. The stock has been battered from two directions — a corruption raid at a subsidiary and the fallout from potential restructuring plans — leaving the shares trading well below their recent highs.

The Bonn-based group’s equity has shed roughly 15 percent since reports surfaced of a possible full merger with T-Mobile US. On Wednesday, the stock took another leg down, sliding 5.2 percent to €27.29, after news broke of a police operation at the company’s German fiber-optic unit. The shares have since steadied at €27.53, but that still leaves them about 20 percent adrift of the 52-week peak of €34.25.

The Corruption Case

The trigger for Wednesday’s sell-off was a dawn raid by North Rhine-Westphalia’s state criminal police. Acting on a warrant from the Cologne public prosecutor’s office, officers searched around 40 premises — residential and commercial properties as well as bank safe-deposit boxes — mainly in the Ruhr region and the Lower Rhine area.

At the centre of the investigation is a 37-year-old employee of Telekom Technik GmbH. He is suspected of funnelling lucrative fiber-optic contracts to a Duisburg-based construction company, allegedly pocketing three percent of each contract value as a kickback. Prosecutors are seeking to freeze assets worth more than half a million euros. Ten individuals are under investigation on charges including commercial bribery, breach of trust and money laundering. All are presumed innocent until proven otherwise.

What sets this case apart is that the company itself triggered the probe. After receiving an anonymous internal tip-off, Deutsche Telekom conducted its own preliminary investigation. Once suspicions hardened, the group filed a criminal complaint against its own employee. The authorities had been running a covert investigation since autumn 2025.

A Telekom spokesman confirmed the searches. While the affair points to functioning internal compliance systems — the tip came from inside the house — it also highlights the vulnerability of capital-intensive fiber rollouts to irregularities. For now, the case appears to be an isolated incident within a subsidiary, but market watchers will be watching closely to see whether further suspects emerge.

The Merger Puzzle

The corruption probe is not the only headache. The bigger strategic question hanging over the stock is the potential full integration of T-Mobile US. Deutsche Telekom currently holds roughly 53 percent of the American mobile operator, which is valued at around $215 billion on the public markets. The parent company itself is worth considerably less — a valuation gap management is keen to close.

Reports suggest the board is exploring a holding structure that would unite both entities under one roof. The resulting telecoms giant would serve around 200 million mobile customers and boast a combined market capitalisation of roughly $360 billion. T-Mobile US is the growth engine: in 2025 alone, it added nearly 7.8 million new contract subscribers. Synergies are expected in areas such as AI infrastructure and future US acquisitions.

But the plan comes with a sting. A new holding company, possibly domiciled outside Germany, would dilute the state’s stake. The German government and KfW together own 28.3 percent of Deutsche Telekom. BNP Paribas calculates that would shrink to between 17 and 18 percent. Any such change to the capital structure requires a 75 percent majority of shareholders — a high bar that is far from guaranteed. The company has not commented on the reports.

Analyst Consensus Remains Bullish

Despite the double dose of bad news, the analyst community has not flinched. All 23 analysts tracked by Handelsblatt maintain buy recommendations. Price targets sit well above current levels:

• Deutsche Bank: Buy, target €42.00
• JPMorgan: Overweight, target €40.00
• Barclays: Overweight, target €39.50
• Bernstein Research: Outperform, target €37.00

The sell-off is being interpreted primarily as a reaction to dilution fears and regulatory complexity, rather than any deterioration in the group’s operational performance. US analysts and trade unions have voiced concerns about the complexity of the holding structure and the erosion of German state influence — political headwinds from Berlin cannot be ruled out.

The next catalyst for the stock will likely be concrete details from management on the structure and location of any potential holding vehicle. Until then, the relative strength index of just under 37 suggests selling pressure has not fully abated.