AD vs CCI: How Array Digital Infrastructure, Inc. and Crown Castle Compare (2026)

Same yardstick, side by side (as of August 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.

Reading it: CCI 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.

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. AD and CCI 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 AD and CCI 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.

Array Digital Infrastructure owns and leases about 4,400 cell towers across the United States. It used to be United States Cellular Corporation, a regional wireless carrier, until it sold its retail wireless operations to T-Mobile for roughly $4.3 billion (closed August 2025) and renamed itself Array that same month. What survived the sale is the real estate: the towers, the ground leases, and the residual spectrum. The company then sold 3.45 GHz and 700 MHz licenses to AT&T for ~$1.018 billion (closed January 2026, producing a ~$156.6 million book gain), and further licenses to Verizon for ~$1.0 billion and T-Mobile for ~$168 million (closed June 2026), while retaining its C-band holdings. Headcount is about 60 people. Telephone and Data Systems, the Carlson-family-controlled parent, holds roughly 81.9% of the economics and about 95.9% of the voting power.

Full AD guide

Crown Castle owns, operates, and leases shared communications infrastructure geographically dispersed across every major U.S. market, comprising approximately 40,000 cell towers and, until May 2026, roughly 90,000 route miles of fiber supporting small cells and fiber solutions. The company's revenue model is essentially that of a landlord: wireless carriers including Verizon, AT&T, and T-Mobile sign long-term leases to place their antennas and equipment on Crown Castle's structures, generating predictable, escalating site rental revenues. Because each tower can host multiple tenants simultaneously with minimal incremental cost, the model carries high operating leverage, and the tower segment has historically operated with very high margins on incremental revenue. Crown Castle converted to a Real Estate Investment Trust (REIT) structure in 2014, which requires it to distribute most of its taxable income as dividends. The company traces its roots to Castle Tower, founded in Houston in 1994 with 133 towers, which later merged with Crown Communications to form Crown Castle; it went public in 1998. Over the following decade it spent heavily on acquisitions, including fiber assets, accumulating a debt load of roughly $24 billion. Persistent activist pressure from Elliott Investment Management ultimately drove a strategic reversal: the company divested its fiber and small cell businesses in May 2026 for approximately $8.5 billion in total, deploying proceeds primarily toward debt reduction and share repurchases. Christian Hillabrant, who previously served as CEO of Vantage Towers AG and COO of Tillman Infrastructure, was appointed President and CEO effective September 15, 2025, and brings over three decades of digital infrastructure experience.

Full CCI guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• AD drivers: The T-Mobile master license agreement converts internal towers into rent; Remaining spectrum is an unmonetized asset sitting inside the enterprise value.
• CCI drivers: Pure-Play Tower Focus Unlocks Operational Simplicity; 5G Densification Keeps Tower Demand Structural.

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: The single largest risk is tenant concentration in the other direction: the T-Mobile MLA provides interim licenses of up to 30 months on the remaining ~1,800 towers not covered by the long-term commitment, so a large block of sites faces a potential decommissioning cliff once T-Mobile finishes its network integration. For CCI, crown Castle's most acute risk is customer concentration: approximately 75% of revenue comes from just three carriers, and the DISH Wireless default vividly illustrates what happens when even a smaller tenant stops paying, resulting in contract termination and over $3.5 billion in disputed payments now in litigation.

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 AD if you believe its drivers more; CCI 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 AD and CCI guides.

AD. Standard multiples do not describe this security well. The trailing P/E near the high single digits to mid teens (data providers disagree) is measuring one-time spectrum gains, not rent, and EV against guided adjusted OIBDA of ~$50 to $65 million screens far above where American Tower, Crown Castle and SBA Communications trade. Both distortions have the same cause: unmonetized C-band spectrum and cash sit inside the enterprise value while contributing no operating income, and legacy wind-down costs still sit inside the expense line. The 52-week range of ~$33.71 to ~$79.17 also overstates the damage, since roughly $44.25 of that decline was paid out as special dividends, leaving total return over the year approximately flat. Sell-side coverage is thin, with a consensus target near $46.34. Q2 2026 results were scheduled for August 7, 2026, the day after this snapshot.

CCI. For infrastructure REITs like Crown Castle, AFFO (Adjusted Funds from Operations) is generally regarded as the most relevant cash-generation metric because it strips out non-cash depreciation that distorts GAAP net income on long-lived assets. The ~$2.10 billion post-sale AFFO midpoint for the 12 months following the fiber divestiture represents a meaningful step-up from 2025, driven by cost savings and lower interest expense rather than top-line growth. The P/E ratio, while elevated versus the broader REIT peer average of roughly 23-25x, reflects the market pricing in the simplification premium and the growth re-acceleration expected in 2027 as DISH-related churn becomes a clean year-over-year comparison.

Headline figures (approximate, August 2026): AD shows revenue (ttm) ~$188 million, with full-year 2026 guided to ~$200-215 million, q1 2026 revenue ~$52 million total, site rental ~$51 million (up ~92% year over year), adjusted oibda guidance (2026) ~$50-65 million, on capex of ~$25-35 million, market cap / enterprise value ~$3.1 billion at ~$35.65 a share, EV ~$4.05 billion; CCI shows site rental revenue (fy2025) ~$4.05 billion, adjusted ebitda (fy2025) ~$2.86 billion, affo (fy2025) ~$1.90 billion, net income (fy2025) ~$444 million.

AD and CCI 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 AD and CCI exposure against your real portfolio. It is not an investment adviser.