AMT vs O: which was the better investment?
American Tower Corporation against Realty Income Corporation on real daily total-return data — every dividend reinvested, from Feb 27, 1998 to Jul 15, 2026.
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Daily total-return data — dividends reinvested. Monthly additions buy on the first trading day.
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Frequently asked questions
Did AMT beat O?
No — measured from Feb 27, 1998 to Jul 15, 2026 with dividends reinvested, O came out ahead: $261,856 versus $137,187 from a $10,000 start. That gap compounds from a 12.2% annual return against 9.7%.
What would $10,000 in AMT be worth today?
$10,000 invested in American Tower Corporation (AMT) on Feb 27, 1998 would be worth about $137,187 as of Jul 15, 2026, a total return of 1271.9% (9.7% per year). The same $10,000 in O would be worth $261,856.
Which was riskier — AMT or O?
AMT swung with an annualized volatility of 44.7% and a worst peak-to-trough drop of -98.7%; O ran at 28.3% volatility with a -48.4% maximum drawdown. Risk-adjusted (Sharpe ratio), that is 0.17 for AMT vs 0.36 for O.
What data is this comparison based on?
Daily adjusted closing prices covering Feb 27, 1998 through Jul 15, 2026 — the full period where both assets have price history. Adjusted prices include dividends and splits, so these are total returns. The page refreshes with new market data every day.
Can I change the dates, amounts, or add monthly investing?
Yes — the interactive tool on this page is pre-loaded with AMT vs O. You can set any start and end date, change the starting amount, add monthly contributions, or build a multi-asset portfolio and compare it against any benchmark.