Telephone and Data Systems, Inc.
Telephone and Data Systems, Inc. (NYSE: TDS) operates as a diversified telecommunications and digital infrastructure company serving customers across the United States through two primary reportable segments: TDS Telecom and Array Digital Infrastructure. The company maintains its corporate website at www.tdsinc.com. From the company’s description.
Margins and return on equity change in ; everything else in percent. Fewer shares and less debt are shown plainly, not as bad news — it depends what you make of buybacks. Dotted labels explain each measure. is shown separately from the annual figures.
What Telephone and Data Systems, Inc. does
In the company’s own words
Telephone and Data Systems, Inc. (NYSE: TDS) operates as a diversified telecommunications and digital infrastructure company serving customers across the United States through two primary reportable segments: TDS Telecom and Array Digital Infrastructure. The company maintains its corporate website at www.tdsinc.com.
TDS Telecom provides high-quality communications services to approximately 1.1 million broadband, video, voice, and wireless connections across 30 states through a mix of fiber, coaxial, and copper networks. The segment operates in small to mid-sized urban, suburban, and rural communities, offering residential and commercial customers bundled services including fiber internet with speeds up to 8 Gigabits per second, digital video recording services through TDS TV+, voice over internet protocol services, and wireless offerings through an MVNO model. TDS Telecom's strategic focus centers on fiber network expansion, particularly in Wisconsin and the Pacific Northwest, combined with IT modernization initiatives designed to enhance customer experience and operational efficiency.
Array Digital Infrastructure, in which TDS owns an 82.0% stake, operates as the fifth largest tower owner and operator of shared wireless communications infrastructure in the United States, managing 4,450 cell towers across 19 states. Array generates revenue by leasing tower space to wireless carriers and providing ancillary services, with major tenants including T-Mobile, AT&T, and Verizon. On August 1, 2025, Array sold its wireless operations and select spectrum assets to T-Mobile, fundamentally reshaping its business model to focus exclusively on tower infrastructure and spectrum monetization. Array continues pursuing strategic alternatives to monetize remaining spectrum assets through pending transactions with Verizon and T-Mobile.
The company employs approximately 4,000 full-time and part-time associates and operates entirely within the United States. TDS is structured as a controlled company under New York Stock Exchange listing standards, with voting control held by the trustees of the TDS Voting Trust. The company maintains a diversified business model combining regulated telecommunications services with tower infrastructure operations, positioning itself to serve both residential and commercial customers while generating recurring revenue from long-term tenant relationships in the wireless communications sector.
Company details
- Sector
- Communication Services
- Industry (SIC)
- Telecommunications
- Headquarters
- CHICAGO, IL
- Fiscal year end
- December
- CIK
- 1051512
- SIC
- 4813
Financial performance, year by year
Fiscal 2013–2025 · USDThe full income statement, balance sheet and cash flow for each of these years — every figure traceable to its filing — is on the Financials tab with a free account.
Who owns Telephone and Data Systems, Inc. — and what changed
Funds as of 2026Q2 · superinvestors as of 2026-06-30
Superinvestors in Telephone and Data Systems, Inc. · what they did last quarter
Share of each manager’s reported 13F portfolio. Change is in shares held, since the previous quarter.
Largest fund holders · Telephone and Data Systems, Inc.’s weight in each
Fund ownership is a floor, not a census — pensions, insurers and people holding shares directly are not visible here.
Fund ownership counts N-PORT filers only, so it is a floor rather than a census — pensions, insurers and direct holders are not visible here, and the remainder is not “held by individuals”.
Fund ownership is a subset of institutional 13F ownership — the two describe overlapping populations and must not be added together.
Every fund and institutional holder, quarter by quarter, is on the Ownership tab with a free account.
Recent filings
All filings →Each filing opens into its own statements and disclosures here.
Put this business in context.
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