Telekom's US Puzzle: A Rejected Merger, a Beefed-Up Buyback, and the Cost of Growth

Deutsche Telekom shares rally 8% as T-Mobile US merger talks end and buyback expands to €5B, despite Q2 reported profit dip.

The Deutsche Telekom share has spent the past week climbing a wall of its own making. On Friday it closed at €29.00, up 8.13% over the week and 13.55% over the past month — a rally that has been powered less by operational headlines than by a dramatic shift in the company's strategic narrative around its prized American asset.

The catalyst came in two distinct waves. First, T-Mobile US formally walked away from merger talks with its German parent, a development that markets greeted with relief rather than disappointment. Then, the company expanded its share buyback programme to as much as €5 billion. Together, the moves have lifted the stock roughly 3.2% since Monday, though it still sits 15.57% below its 52-week high of €34.35.

The Merger That Wasn't

For years, the prospect of a full-blown combination between Deutsche Telekom and T-Mobile US has been the kind of headline that makes investors wince. The latest iteration, reported by US outlet Semafor, would have involved a new holding company issuing a share-exchange offer for both entities — effectively creating a multinational telecom behemoth. But T-Mobile US, in which Deutsche Telekom holds just over half of the shares, has now signalled it no longer supports the plan.

That rejection is being read as a positive by the market. Previous reports of the deal had consistently triggered scepticism among investors, who viewed the operational and regulatory complexities as daunting. The numbers help explain why: T-Mobile US is valued at roughly €160 billion, with Deutsche Telekom's stake worth nearly €90 billion. The parent company itself carries a market capitalisation of €139.41 billion. A merger of that scale, with its attendant regulatory scrutiny and valuation uncertainty, was always going to be a hard sell.

A Quarter of Two Speeds

The market's renewed confidence is now being tested against the company's latest financial results, which paint a picture of a business moving at different velocities. On an organic basis, the second quarter was robust: net revenue climbed 3.3% to €29.9 billion, adjusted EBITDA AL rose 7.3% to €11.8 billion, and adjusted net profit advanced 11.1% to €2.8 billion.

The reported figures tell a different story. Net profit fell 6.3% to €2.5 billion, dragged down by integration costs tied to T-Mobile US's acquisition of UScellular, a deal completed in August 2025. That gap between organic strength and reported weakness is the central tension investors must now weigh: can operational momentum outpace the drag of integration expenses?

The Buyback Backstop

The expanded repurchase programme — now up to €5 billion — is the company's clearest signal of confidence. Management has also lifted its 2026 free cash flow guidance from "more than €19.8 billion" to "around €20.0 billion", supported by a 3.1% increase in free cash flow AL to €5.0 billion in the second quarter.

The arithmetic behind this is worth examining. Deutsche Telekom has increased its stake in T-Mobile US to 54.3% as of July, up from roughly 53% in April, and has confirmed it will not sell into T-Mobile US's own buyback programme in 2026. That decision secures the majority stake but also locks up capital that could otherwise be deployed elsewhere — including the AI investments the company plans to outline in October.

T-Mobile US itself continues to deliver: organic EBITDA growth of 9.6% in the first half under IFRS, around 500,000 new customer accounts, and second-quarter service revenue up 8.9% with core EBITDA rising 11.7%. A portion of that growth stems from the UScellular acquisition — the very transaction generating the integration costs weighing on the parent's reported earnings.

Reading the Chart

Technically, the stock has rebuilt its footing. It trades 1.49% above its 200-day moving average, and the relative strength index of 63.3 suggests upward momentum without overheating. The shares also sit above both their 50-day and 200-day averages, though they remain well off the February high.

The volatility tells a cautionary tale: annualised volatility of 36.38% indicates the market still views the stock as prone to sharp swings. The 15.57% gap to the 52-week high is a reminder that investor confidence built earlier this year has already been partially surrendered.

What Comes Next

Two dates now loom large. On 5 October, the company will detail its AI investment plans — an event that could either reassure or alarm investors depending on the capital intensity of what is proposed. On 5 November, third-quarter results will provide the next hard evidence of whether organic growth can continue to offset integration costs.

In the meantime, the European segment offers a measure of stability: the 34th consecutive quarter of organic EBITDA growth, with 161,000 new fibre connections in Germany alone, up 18% year on year. A separate industry agreement aimed at coordinating network build-out and avoiding duplicate cable-laying should help protect the investment case domestically.

The bull case rests on the breadth of this growth sustaining the upgraded cash flow guidance, which in turn underwrites the buyback without straining the balance sheet. The bear case is equally straightforward: integration costs from a completed acquisition are proving heavier than expected, capital is tied up in the T-Mobile US stake, and the market is paying a premium for volatility. For now, the rally has momentum — but the quarter ahead will determine whether it has substance.