Comcast Corp (CMCSA) is undervalued and AT&T Inc (T) is undervalued.
Against our estimates of intrinsic value, CMCSA trades at the wider discount: a margin of safety of +73%, against +48% for T.
Values as of the 22 Sept 2026 close.
Discounting its cash flows at 5.9% (average of 3 methods) values the shares at $82.34; the price of $22.42 is 73% below that value, and 87% of that value comes from beyond year five.
Leak Score 68/100 on 9 of 12 signals
Discounting its cash flows at 6.5% (average of 3 methods) values the shares at $48.39; the price of $25.10 is 48% below that value, and 85% of that value comes from beyond year five.
Leak Score 61/100 on 10 of 12 signals
| Metric | CMCSA | T |
|---|---|---|
| Verdict | Undervalued | Undervalued |
| Price | $22.42 | $25.10 |
| Intrinsic value | $82.34 | $48.39 |
| Margin of safety | +73% | +48% |
| Leak Score | 68/100 (9/12) | 61/100 (10/12) |
| Market cap | $79.6B | $172.0B |
| Revenue growth, 5 years | 3.6% | -6.1% |
| Operating margin | 14.8% | 21.2% |
| Net margin | 9.0% | 16.8% |
| Return on equity | 12.0% | 20.1% |
| Debt to equity | 1.01 | 1.47 |
| P/E | 7.3x | 8.3x |
| Forward P/E | 6.3x | 9.8x |
| P/B | 0.9x | 1.6x |
| Dividend yield | 5.9% | 4.4% |