ADT vs AMZN: Which Is the Better Buy in 2026?
Last updated September 2026
Short answer
AMZN is the larger of the two ($2.75T market cap): the incumbent the market prices for continued execution (24.53x forward earnings, beta 1.45). ADT is the smaller challenger ($5.38B), cheaper on forward earnings (7.48x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
ADT vs AMZN: the tie-breaker metrics
Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | ADT | AMZN | What it tells you |
|---|---|---|---|
| Market cap | $5.38B | $2.75T | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 7.48 | 24.53 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Trailing P/E | 10.24 | 20.49 | Valuation on the last 12 months. A big drop from trailing to forward means the market expects earnings to jump, so more growth is already in the price. |
| Beta | 1.04 | 1.45 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 42% of range | 65% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 1.55 | 4.98 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: ADT is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how ADT and AMZN affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. ADT and AMZN share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined ADT and AMZN exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does ADT (ADT) do?
ADT Inc. provides security, interactive, and smart-home solutions to residential and small-business customers across the United States, with its core business built on professionally installed and monitored alarm systems billed as recurring monthly revenue (RMR). The company reported total revenue of roughly $5.1 billion for full-year 2025 and end-of-period RMR of about $359 million (around $4.3 billion annualized), with monitoring and related services making up the large majority of revenue. Partnerships with Google (devices and AI) and State Farm (insurance-linked distribution), plus its February 2026 acquisition of Origin AI for Wi-Fi sensing, are meant to modernize the offering and improve retention.
What does Amazon (AMZN) do?
Amazon is one of the largest companies in the world, operating across three major business lines. Amazon Web Services (AWS) is the dominant global cloud computing provider, generating around $110 billion in annual revenue and most of the company's operating income. The North America and International e-commerce segments include the Amazon online marketplace, Prime membership, and third-party seller services. Advertising has grown into the third-largest digital ad business in the world (after Google and Meta).
ADT vs AMZN: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- ADT drivers: Recurring monthly revenue base; Cash flow and capital returns.
- AMZN drivers: AWS as the AI infrastructure backbone; Retail margin expansion.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: ADT carries substantial leverage, with net debt of roughly $7.5 billion, so higher-for-longer interest rates raise refinancing and interest costs. For AMZN, hyperscaler AI capex is concentrated; if model training demand cools, AWS growth slows.
ADT or AMZN: which should you pick?
Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick ADT if you believe its drivers more; AMZN if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the ADT and AMZN guides.
ADT vs AMZN: the full fundamentals
ADT. ADT trades as a leveraged, cash-generative subscription business, with an enterprise value well above its equity value because of the large debt load. Full-year 2025 revenue grew about 5 percent while 2026 guidance points to roughly flat revenue and adjusted EPS with an emphasis on free cash flow. The stock has traded in the high single digits per share, and the small dividend plus a $1.5 billion buyback authorization frame much of the capital-return case.
AMZN. Amazon's headline P/E reflects the aggregate of low-margin retail and high-margin AWS/advertising. The valuation premium is paid for AWS specifically; retail is essentially valued near cost. P/E of 40x is elevated versus the S&P 500 average (~22x), supported by AWS growth re-accelerating.
Headline figures (approximate, July 2026): ADT shows revenue (fy2025) ~$5.1B, recurring monthly revenue (rmr) ~$359M (~$4.3B annualized), adjusted eps (fy2025) ~$0.89, adjusted free cash flow (fy2025, incl. swaps) ~$863M; AMZN shows revenue (ttm) ~$650 billion, operating margin ~10% (AWS materially higher; retail much lower), net income (ttm) ~$60 billion, eps (ttm) ~$5.50.
The bottom line: ADT vs AMZN
ADT and AMZN are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined ADT and AMZN exposure against your real portfolio. It is not an investment adviser.
Wondering how ADT or AMZN fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in ADT with AI
Connect the broker you already use and ask Walnut's AI how ADT fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between ADT and AMZN?
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ADT Inc. Amazon is one of the largest companies in the world, operating across three major business lines. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is ADT or AMZN the better stock?
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Neither is universally better. AMZN is the larger incumbent; ADT is the smaller challenger and looks cheaper on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, ADT or AMZN?
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On forward P/E (as of September 2026), ADT trades at 7.48x and AMZN at 24.53x, so ADT is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both ADT and AMZN?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of ADT vs AMZN?
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ADT: ADT carries substantial leverage, with net debt of roughly $7.5 billion, so higher-for-longer interest rates raise refinancing and interest costs. Gross revenue attrition near 13 percent means the company must continually replace lost subscribers just to stay flat. Competition from lower-cost DIY and camera-first players such as Ring (Amazon) and SimpliSafe pressures pricing and share, and the broad shift toward app-managed, self-installed systems challenges ADT's professional-install model. Revenue and adjusted EPS are guided roughly flat for 2026, so the equity story depends heavily on cash flow and buybacks rather than growth. Any weakening in consumer spending or housing activity could slow new subscriber additions. AMZN: Hyperscaler AI capex is concentrated; if model training demand cools, AWS growth slows. Regulatory pressure on Amazon's third-party marketplace practices (FTC) remains active.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell ADT or AMZN; figures are approximate and dated (as of September 2026). Verify current data before investing.