Published by Global Banking & Finance Review®
Posted on April 22, 2026
3 min readLast updated: April 22, 2026
Add as preferred source on GoogleDeutsche Telekom shares slipped ~1.5% on April 22, 2026 after reports it is exploring a full merger with its 53%‑owned U.S. unit T‑Mobile US via a new holding company, potentially creating the world’s largest wireless operator by market capitalization.
By Hakan Ersen, Elvira Pollina and Supantha Mukherjee
April 22 (Reuters) - Deutsche Telekom is exploring a deal to combine with its U.S. unit, T-Mobile US <TMUS.O>, to create a $400 billion telecoms giant in what would be the largest ever public merger, two people familiar with the matter said.
The German group's shares fell about 3% on Wednesday morning after news of the early-stage talks, first reported by Bloomberg. Telekom already owns a 53% stake in T-Mobile.
The complex potential deal is aimed at reigniting growth in a stagnating telecoms sector, but could face major regulatory and geopolitical hurdles. It comes amid strained diplomatic and economic ties between Germany and the U.S., clouded by tariffs and tensions over the war in Iran.
Any deal would require support from the German state, Deutsche Telekom's single biggest shareholder with a 28% stake held roughly equally by the government and state-lender KfW, whose holding could be diluted in a merged group.
Deutsche Telekom declined to comment. T-Mobile and the German government did not immediately respond to requests.
Burdened by billions of euros of debt, European telecom companies operate in fragmented, highly competitive markets and have been seeking new avenues for growth. The talks also come as dealmaking has begun to recover following the Iran conflict.
A merger would create a company valued at roughly $400 billion, potentially boosting liquidity and making future dealmaking easier, one of the sources said, speaking on condition of anonymity because the discussions are private.
COULD BE BIGGEST PUBLIC MERGER ON RECORD
Deutsche Bank analysts said a transatlantic group could find it easier to tap capital markets to pursue cross-border deals in Europe and the United States.
Under the proposal, a new holding company would make an all-share offer for both firms, be owned by existing shareholders and list in both the U.S. and Europe, Bloomberg said.
Such a transaction would surpass the $202.7 billion Vodafone-Mannesmann merger announced in 1999 - currently the biggest deal on record, according to LSEG data. Deutsche Telekom has a market value of about $166 billion, while T-Mobile is valued at about $218 billion.
T-Mobile's stock has lost a quarter of its value in the last year, while Deutsche Telekom shares are down about 10%.
(Reporting by Thomas Seythal and Hakan Ersen in Berlin, Supantha Mukherjee in Stockholm and Elvira Pollina in Milan. Editing by Adam Jourdan, Louise Heavens and Mark Potter)
Deutsche Telekom shares fell 1.5% following reports of potential merger talks with T-Mobile US.
The merger would create the world's largest wireless operator by market capitalization, spanning the US and Europe.
The German government and state-lender KfW, as well as existing investors, are the main shareholders involved.
Deutsche Telekom did not respond to a request for comment, but two sources confirmed the early talks to Reuters.
T-Mobile's stock has lost a quarter of its value in the past year, while Deutsche Telekom's shares have dropped 10%.
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