ADT finally turned its margins into a story. The balance sheet didn't get the memo.

ADT’s 2025 numbers read like a quiet comeback: revenue climbed to $5.1B and profit margins widened, but the stock hasn’t acted like it just got materially healthier.

Operating margin has gone from single digits to the high twenties over the past several years — ADT reported an operating margin of +6.5% in 2017 and +25.5% in 2025. Net margin, the bottom-line share of sales, improved to +11.6% in 2025 from +7.9% in 2017.

Revenue growth, by contrast, is steady and modest. The company’s top line was $5.1B in 2025, a +4.7% year-over-year rise off a post-pandemic trough in 2021 when revenue hit $4.2B. The pattern since then is recovery, not a breakout: 2022 $4.4B, 2023 $4.7B, 2024 $4.9B, 2025 $5.1B.

So there are two clear facts pulling in different directions: profit margins have tightened substantially, but sales growth is moderate.

And then there’s the balance-sheet anchor. ADT carries $7.3B of net debt — a headline number that’s larger than the company’s annual revenue. That degree of leverage is the other loud line on the page: higher-margin operations, but with a heavy debt load sitting over them.

The market’s reaction so far is lukewarm. The stock closed at $7.50 on 2026-07-30 after a run from $6.83 a week earlier; six-month trailing return is -5.7% and 12-month trailing return is -10.1%.

There’s a practical arithmetic people watch here: steady mid-single-digit revenue growth plus materially improved margins can lift free cash flow a lot — but how much of that cash is required to service $7.3B of net debt is the counterweight. The filing supplies the raw inputs (sales, margins, and net debt); the range of outcomes investors will price depends on how they pair those inputs with an assumed valuation multiple.

ADT’s operating-margin improvement is indisputable in the numbers: from +0.2% in 2021 to +25.5% in 2025 is not a rounding error. Its revenue recovery since the pandemic slump is steady. Its disclosed relationships and competitive map — TU as a partner, competitors including AMZN, ARLO, CMCSA, ROKU — remind you the market isn’t a closed system: distribution partners and big rivals matter when growth is incremental.

That’s the tension: a parts-of-the-business story that reads better on the margin line than on the top line, and a balance sheet that forces anyone doing the math to graft profitability onto financing reality.

The filing gives the numbers; where investors put them together — and what multiple they apply to ADT’s improving cash generation given $7.3B of net debt — is the levers-and-weights part of the story, not the company’s accounting.

Source: ADT annual filings (2017–2025).