T-Mobile US is in the running to buy Uniti Group's fiber assets, according to reports.

TMT Finance reported earlier this week that the carrier is considering buying all or parts of Uniti Group. Private equity firm TPG is also said to be interested in the assets.

Following the speculation, Uniti's stock surged more than 20% this week, as reported by Fierce Wireless.

T-Mobile US is looking to grow out its fiber footprint across the U.S., following high-profile acquisitions of Lumos and Metronet last year.

TMT Finance noted that the carrier is interested in adding Uniti's Kinetic fiber-to-the-home (FTTH) business, while TPG wants Uniti’s enterprise fiber business. T-Mobile US and TPG could potentially partner to buy the entire company.

Uniti notably completed its merger with Windstream's FTTH business last year. Uniti is a real estate investment trust based in Little Rock, Arkansas, and owns fiber and wireless towers, with around 138,000 fiber route miles, and 8.3 million fiber strand miles in its portfolio.

T-Mobile US said it will reach 12 to 15 million households with fiber by the end of 2030, as the carrier seeks to carve out more fiber deals. By the end of the decade, the carrier expects to serve up to four million fiber subscribers.

In other fiber news from this week, Google named its fiber unit GFiber, formally adopting the unofficial moniker it previously used to reference its Google Fiber business. As reported by SDxCentral sister site DCD, the rebrand comes as the company pushes on with its fiber merger with investment firm Stonepeak's Astound Broadband to create an independent fiber provider.