If you invested $100 a month in American Tower
Buying $100 at each monthly close from November 2016 through October 2026, with dividends reinvested, turns $12,000.00 contributed into $13,865.90 as of October 29, 2026. Annualized money-weighted IRR: 2.89%.
| Monthly schedule | Invested | Value | Annualized (money-weighted IRR) | SPY same-schedule value (reinvested) |
|---|---|---|---|---|
| 5 years · $50/month | $3,000.00 | $2,993.45 | -0.09% | $4,658.67 · 60 contributions · $3,000.00 invested · 2021-10 to 2026-10 |
| 5 years · $100/month | $6,000.00 | $5,986.89 | -0.09% | $9,317.33 · 60 contributions · $6,000.00 invested · 2021-10 to 2026-10 |
| 5 years · $500/month | $30,000.00 | $29,934.47 | -0.09% | $46,586.66 · 60 contributions · $30,000.00 invested · 2021-10 to 2026-10 |
| 10 years · $50/month | $6,000.00 | $6,932.95 | 2.89% | $13,474.72 · 120 contributions · $6,000.00 invested · 2016-10 to 2026-10 |
| 10 years · $100/month | $12,000.00 | $13,865.90 | 2.89% | $26,949.44 · 120 contributions · $12,000.00 invested · 2016-10 to 2026-10 |
| 10 years · $500/month | $60,000.00 | $69,329.52 | 2.89% | $134,747.18 · 120 contributions · $60,000.00 invested · 2016-10 to 2026-10 |
| 20 years · $50/month | $12,000.00 | $35,355.74 | 9.87% | $56,585.20 · 240 contributions · $12,000.00 invested · 2006-10 to 2026-10 |
| 20 years · $100/month | $24,000.00 | $70,711.47 | 9.87% | $113,170.40 · 240 contributions · $24,000.00 invested · 2006-10 to 2026-10 |
| 20 years · $500/month | $120,000.00 | $353,557.37 | 9.87% | $565,852.00 · 240 contributions · $120,000.00 invested · 2006-10 to 2026-10 |
Asset last price date: 2026-10-29; SPY last price date: 2026-10-29. The latest month may be incomplete. Zero initial investment; contributions start the following month. Monthly observations are estimates, not executable trades. Fees, taxes and FX excluded. Curated surviving assets; delisted companies are absent. Not financial advice. Past performance doesn’t predict future returns.
YOUR INVESTMENT TODAY
$13,865.90
$1,865.90 total gain · 15.55% total return
Amount invested$12,000.00
Annualized (money-weighted IRR)2.89%
Investment multiple1.16×
● Your investment● S&P 500 (SPY)