The coverage driving today’s volume
Shares of tower operators including American Tower moved up on 23 October after a run of reports that SpaceX is in talks to expand into cellular infrastructure, with several outlets framing tower owners as beneficiaries regardless of how any carrier arrangement unfolds, according to [reports](https://www.a report.com/market-update-spacex-talks-send-cell-tower-stocks-surging-spcx-cci-12189620?.tsrc=rss) published that day. One of the pieces behind the spike previewed American Tower’s upcoming third-quarter report, though that preview drew on analyst expectations rather than the company’s own filings. None of the coverage reviewed cites the company’s own filed numbers. This piece does.
What the cash flow statement shows
American Tower’s trailing-twelve-month (TTM) figures to 30 June 2026 show free cash flow growing 5.8% year over year, reaching $3.96bn, while net income grew 163.1% over the same period. Operating cash flow grew 10.1% TTM, but capital expenditure rose 20.7%, to $1.82bn, which narrowed what was left over after reinvestment. Free cash flow margin landed at 36.2% of revenue, down 0.3pp from a year earlier.
| Metric (TTM) | Value | YoY change |
|---|---|---|
| Free cash flow growth | 5.8% | n/a |
| Net income growth | 163.1% | n/a |
| Operating margin | 44.8% | -0.73pp |
| Net margin | 31.1% | n/a |
| FCF margin | 36.2% | -0.3pp |
| Capex growth | 20.7% | n/a |
Those are two different growth stories sitting in the same statements: one measure of profit accelerating fast, the measure of cash actually generated moving far more slowly.
Margins tell a quieter story
Operating margin, the broadest read on how profitable the tower business is before financing and tax, was 44.8% TTM, down 0.73 percentage points from the year-ago period. Net margin, by contrast, reached 31.1% TTM, and net income rose 163.1% over the same stretch. That gap, net income climbing sharply while operating margin ticks down slightly, isn’t explained by the operating-margin figure alone; the fundamentals gathered here don’t break out which line below operating profit moved. That detail sits in the 10-Q’s income statement notes, not in the fundamentals presented in this analysis.
Free cash flow, harder to flatter with one-off items, is the steadier number, and it grew in single digits over the same stretch.
Whatever commercial impact a SpaceX agreement might eventually have on American Tower’s lease income is not yet visible in any reported quarter, and the structured data used here does not include segment-level detail on tenant additions or lease terms. Readers looking for a direct link between today’s headlines and the company’s reported numbers will not find one in the filings reviewed.
What it means for value
Our discounted cash flow model uses American Tower’s TTM revenue growth, 6.6%, as its base-case growth assumption for the next stage of the forecast. Moving that growth input up 5 percentage points raises the model’s value per share by 52.6%; moving it down 5 points cuts it by 40.3%. A 1 percentage point rise in the discount rate reduces model value by 23.95%. FCF margin, the measure squeezed by this year’s capex increase, is a smaller input by comparison: a 1 percentage point change in FCF margin moves model value by about 3.5%, and the margin decline actually recorded over the past year would subtract 0.95% from model value if it persisted. Growth assumptions and the discount rate move this model far more than the margin compression visible in the capex figures above. These are model values under stated assumptions, not a comparison with the share price.
On that pattern, the third-quarter filing, covering the three months to 30 September 2026, would be expected within the next few weeks. That filing is the next point at which free cash flow, net income and capital expenditure, the figures examined here, will update, and the first to carry any numbers from the period in which the SpaceX discussions have been reported.