Americans Cannot Stop Using Their Phones. These 3 REITs Collect the Rent

All three tower REITs report dividends covered by FY2026 AFFO, but coverage varies: SBA Communications’ payout is 41.1% of AFFO midpoint, American Tower’s is 64.6%, and Crown Castle’s is 92.6%. SBA offers the strongest coverage but faces carrier churn and refinancing risk; Crown Castle’s 6.16% yield has the thinnest cushion and a $774M annualized carrier renewal due in 2028. The article cites expected mobile spectrum auctions beginning in 2027 as a potential demand catalyst, while all three stocks remain down year to date.

Analysis

The key underwriting risk is assuming mobile traffic growth converts directly into tower rent. Spectrum additions can absorb more traffic on existing networks before carriers need incremental sites; auction spending may also compete with tower capex. Treat 2027 spectrum activity as a catalyst to monitor, not a guaranteed leasing inflection. Tower economics will depend on carrier deployment plans and colocations, not data usage alone.

The relative risk is asymmetric: CCI’s high yield offers limited cushion if tenant economics weaken, while leverage and concentrated renewals leave less room to absorb a setback. Its prior dividend reset also makes the yield a less reliable valuation anchor. AMT has a more balanced exposure, but CoreSite should be valued as a distinct data-center business: AI demand does not automatically translate into tower growth, and power availability and customer capex remain constraints. SBAC’s payout flexibility is attractive, though refinancing costs and international execution can dilute the apparent safety advantage.

Over the next 1–3 months, watch carrier commentary on network capex, churn and colocations; over 6–18 months, test whether spectrum deployment produces incremental site demand. Satellite-to-phone services are a longer-dated substitution risk, particularly for remote coverage, rather than an immediate replacement for terrestrial capacity.

Key Decisions for Investors

• Prefer AMT to CCI on a relative basis; consider a modest dollar-neutral long-AMT/short-CCI position only if current valuation spreads do not already price in CCI’s renewal and payout risks. Reassess on carrier leasing updates and CCI’s 2028 renewal progress.
• Keep SBAC as the cleaner dividend-growth exposure, but do not extrapolate its payout headroom without checking the November ABS refinancing rate and subsequent AFFO guidance. Higher-than-assumed funding costs or weaker AFFO would weaken the thesis.
• Do not buy tower stocks solely on the 2027 spectrum narrative. Upgrade the thesis only if carriers translate spectrum deployment into sustained site leasing, colocations or higher organic tenant billings.
• Falsify the AMT-over-CCI view if AMT’s churn or leasing trends deteriorate while CCI demonstrates durable AFFO growth, improved payout coverage and credible progress on its major renewal.