AMT monthly performance report
View AMT's monthly returns, drawdown, and seasonality trends — updated every month.
AMT monthly report
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Key takeaways
- American Tower (AMT) closed September 2026 at $173.98, down 0.98% for the month and −9.87% over the trailing 12 months.
- Year-to-date, AMT is −0.91%, underperforming the S&P 500 which has returned +11.70% YTD.
- The stock is trading −1.94% versus its 200-day moving average ($177.42), a cautious technical signal.
- Over the past three years, AMT has underperformed the S&P 500 by −74.79%, with a relative strength index reading of 56.4.
- Win rate over the trailing 39 months stands at 51.3% — 20 positive months versus 19 negative months.
American Tower ended September 2026 at $173.98, posting a monthly return of −0.98%. The S&P 500 returned −0.70% over the same window, leaving relative performance at −0.28%.
The current quarter stands at +6.36% (Q3 2026 (QTD)), while medium-term trend remains soft: price is −1.94% versus the 200-day moving average ($177.42).
Year-to-date, AMT is −0.91% against SPY +11.70%, a gap of −12.60%. The stock is currently −12.63% below its 52-week high, with maximum 3-year drawdown at −33.24%.
| Period | AMT | S&P 500 (SPY) | Excess return |
|---|---|---|---|
| 1 Day | −0.91% | −0.12% | −0.79% |
| 1 Week | −2.18% | −0.34% | −1.84% |
| 1 Month | −0.98% | −0.70% | −0.28% |
| 3 Months | −5.69% | +2.80% | −8.48% |
| 6 Months | −5.66% | +13.85% | −19.51% |
| YTD | −0.91% | +11.70% | −12.60% |
| 12 Months | −9.87% | +15.01% | −24.88% |
| 3 Years | −3.09% | +71.69% | −74.79% |
| Rank | Month | Return |
|---|---|---|
| #1 | Nov 2023 | +17.17% |
| #2 | May 2024 | +14.09% |
| #3 | Jul 2024 | +13.39% |
| #4 | Feb 2025 | +11.18% |
| #5 | Oct 2023 | +8.36% |
| Rank | Month | Return |
|---|---|---|
| #1 | Apr 2024 | −13.17% |
| #2 | Jun 2026 | −12.51% |
| #3 | Dec 2024 | −12.24% |
| #4 | Mar 2026 | −10.05% |
| #5 | Jan 2024 | −9.37% |
| Quarter | Return |
|---|---|
| Q2 2025 | +1.57% |
| Q3 2025 | −12.99% |
| Q4 2025 | −8.71% |
| Q1 2026 | −1.70% |
| Q2 2026 | −5.22% |
| Q3 2026 (QTD) | +6.36% |
| Year | Return |
|---|---|
| 2023 | +1.90% |
| 2024 | −15.04% |
| 2025 | −4.27% |
| 2026 | −0.91% |
| Metric | Value |
|---|---|
| 52-Week High | $199.13 (2025-09-17) |
| 52-Week Low | $160.06 (2026-07-06) |
| Current Price | $173.98 |
| 200-Day Moving Average | $177.42 |
| Price vs 200DMA | −1.94% |
| 3-Year Maximum Drawdown | −33.24% (2026-07-06) |
| Current Drawdown from 52W High | −12.63% |
| RS metric | Value |
|---|---|
| RS Index (3-year, rebased to 100) | 56.4 |
| 3-Year Excess Return vs S&P 500 | −74.79% |
| RS Peak | 114.5 (Dec 2023) |
| RS Trough | 53.3 (Jul 2026) |
| Status | Underperforming Benchmark |
Frequently asked questions
What was AMT's return for this report period?
AMT returned −0.98% in the latest monthly window ending 2026-09-18.
Has AMT outperformed SPY year to date?
YTD AMT: −0.91% vs SPY: +11.70%.
What is AMT's 12-month return?
−9.87% over the trailing 12 months.
Is AMT above or below its 200-day moving average?
Price is −1.94% versus 200DMA ($177.42).
What is the maximum drawdown in the 3-year window?
−33.24% on 2026-07-06.