Want to find your lens? Five questions, no jargon — they tell you which of four reads fits how you already think.
Cheap — but check the trap first.
It looks undervalued, but something is deteriorating. Cheap for a reason, or a real bargain?
Price against fair value
Free cash flow — 10-year history ($B)
What the math is really telling you. Watch whether cash flow is compounding — that, more than any single year, is what a value read hangs on.
The read — lights & verdict
- Good:UndervaluedFair value ~$230 vs $182 — a margin of safety of 27%.
- Good:Price is in line with its recordPriced for ~3%/yr, roughly what it has delivered (85.7%/yr) — from a depressed FY22 base.
- Good:Revenue still growingUp 8.5% last year — demand isn't the problem.
- Good:Cash flow compoundingFree cash flow up ~85.7%/yr — the engine is growing.
- Warning:Heavy debt loadNet debt of $83B — roughly 5× annual free cash flow. This changes the risk picture. It also has $30B of operating-lease commitments — about 1.7× annual free cash flow — which this figure does not count as debt.
How this was built. Every figure is computed from T-Mobile US, Inc.'s SEC filings — no estimates, no AI. Two-stage DCF: 9% discount rate, 5% free-cash-flow growth for 10 years, 2.5% terminal. Free cash flow is operating cash flow less capital spending. Net cash is cash and marketable securities less borrowings, commercial paper and finance leases; operating leases are disclosed but never counted as debt. We subtract net debt from the value of the business — for T-Mobile that is about $83B, or $73 per share. Fundamentals are from the FY25 annual report and change only when a new one is filed. Price of $181.52 taken 2026-09-04 (Google Finance, manual entry, 2026-08-28) — it is not live and does not move during the day.
TickerMath is an educational tool, not investment advice — it computes one model from SEC filings and can be wrong. How we compute this →