HIGHBuilt-inProduct / Revenue mix
97%
Communications segment
“10-K Item 1: 'The Communications segment provided approximately 97% of 2025 segment operating revenues and accounted for substantially all of our 2025 total segment operating income.'”
T · Concentration risk · 10-K extracted
AT&T (T) concentration risks
Updated
The most significant concentration AT&T discloses is Communications segment at 97%, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.
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Source: AT&T’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗
At a glance
Disclosed-size breakdown · 2 disclosed concentrations
HIGH2
MEDIUM0
LOW0
Disclosed concentrations
Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).
HIGHBuilt-inProduct / Revenue mix
54%
wireless service
“10-K Item 1: 'Wireless service| 54 | %| 53 | %| 52 | %'”
TrendMatrix Research · concentration synthesis
What these concentrations mean together
updated 2026-07-26AT&T's concentration profile is dominated by business-mix structure rather than any customer or counterparty dependency. The Communications segment provided approximately 97% of 2025 segment operating revenues and accounted for substantially all of the company's segment operating income — a high-share exposure that is structural, reflecting what AT&T is as a business rather than reliance on any external party. Within Communications, wireless service alone contributed 54% of the relevant revenue mix, also a high-share, structural exposure. Because both figures describe the company's own chosen business composition rather than dependency on a customer, supplier, or single geography, the risk here is less about a shock knocking out one relationship and more about secular pressure on the wireless and broader Communications business itself — since so much of AT&T's results now flow through that single segment and that single service line, any slowdown there has little offsetting exposure elsewhere in the disclosed mix.
For the engine’s reasoning on T’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.
Industry peers · Telecom Services
Peer concentration profile
| Symbol | Name | HIGH | MEDIUM | LOW | Total |
|---|---|---|---|---|---|
| AD | Array Digital Infrastructure, I | 2 | 0 | 0 | 2 |
| T● | AT&T Inc. | 2 | 0 | 0 | 2 |
| CMCSA | Comcast Corporation | 1 | 1 | 0 | 2 |
| ATEX | Anterix Inc. | 0 | 1 | 0 | 1 |
| CCOI | Cogent Communications Holdings, | 0 | 1 | 0 | 1 |
| CHTR | Charter Communications, Inc. | 0 | 1 | 0 | 1 |
Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.