AT&T Valuation Gap Driven By Legacy Network Sunset

AT&T (T) currently trades at 8.2 times earnings, a valuation far below the S&P 500 median of 23.0. This discount reflects a one-year stock return of -9.4% against the index’s 19.3% gain. Despite the poor share price performance, the company converts $127.2 billion in annual revenue into cash with a 9.9% free cash flow yield, creating a profile that aligns with value investing criteria.

The company’s operating margin stood at 20.6% over the past twelve months, exceeding the S&P 500 median of 18.6%. Revenue grew by 2.6% in the same period. However, the low multiple is supported by long-term growth constraints. The three-year average annual revenue growth rate is 1.6%, significantly lagging the S&P 500 median of 8.4%. This historical lack of expansion explains why the market prices the stock as a shrinking entity rather than a growth candidate.

Legacy Copper Retirement Accelerates

The business model is undergoing a structural shift as AT&T powers down its copper network. In the second quarter of 2026, service revenues in the legacy segment fell by 26% year over year. Management has received approval to discontinue legacy services in over 30% of wire centers by late 2026. This strategic retreat from legacy infrastructure is the primary driver behind the perceived shrinkage in the company’s overall revenue base.

Conversely, the Advanced Connectivity segment, which accounts for over 90% of service revenue and nearly all adjusted EBITDA, grew service revenues by 5.1% year over year in the same quarter. The company added more than 1 million subscribers across fiber, fixed wireless, and postpaid mobile lines. This segment shift supports a consolidated adjusted EBITDA margin of 39.1%, the highest level since the company refocused its strategy on advanced connectivity services.

Debt Levels Rise Post-Acquisition

Financial leverage has increased following the completion of the EchoStar spectrum purchase. Net debt stood at 2.68 times adjusted EBITDA at the end of the second quarter but has moved into the 3.2 times range after the deal closed. This increase in leverage is a key factor in the current valuation discount, as investors weigh the cost of capital against the company's cash generation capabilities.

Fiber average revenue per user (ARPU) declined 1.3% year over year in the second quarter of 2026. This drop largely reflects the integration of lower-ARPU subscribers from the Lumen acquisition. Excluding these customers, Fiber ARPU remained approximately flat. Management anticipates that convergence strategies will place near-term pressure on this metric, further complicating the near-term revenue outlook.

Forward Cash Flow Targets Set

Management guides for free cash flow exceeding $18 billion in 2026. To support shareholder returns, planned buybacks have been increased from approximately $8 billion to roughly $10 billion, with some activity pulled forward from later years. According to GN stocks/sp500 data, achieving these targets while reducing leverage to the 2.5-times target within three years of the EchoStar close would validate the current discount as a mispricing of the shrinking legacy segment rather than the growing connectivity business.