AMT vs. IYW
AMT (American Tower Corporation) is a stock, while IYW (iShares U.S. Technology ETF) is Technology Equities fund tracking the Russell 1000 Technology RIC 22.5/45 Capped Index. Over the past 10 years, AMT returned 7.89%/yr vs 25.94%/yr for IYW. At a 0.39 correlation, their price movements are largely independent.
Performance
AMT vs. IYW - Performance Comparison
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Returns By Period
In the year-to-date period, AMT achieves a 4.18% return, which is significantly lower than IYW's 21.96% return. Over the past 10 years, AMT has underperformed IYW with an annualized return of 7.89%, while IYW has yielded a comparatively higher 25.94% annualized return.
AMT
- 1D
- 1.67%
- 1M
- -1.50%
- YTD
- 4.18%
- 6M
- 5.83%
- 1Y
- -15.94%
- 3Y*
- 2.32%
- 5Y*
- -4.51%
- 10Y*
- 7.89%
IYW
- 1D
- -3.91%
- 1M
- 0.69%
- YTD
- 21.96%
- 6M
- 20.43%
- 1Y
- 47.04%
- 3Y*
- 32.10%
- 5Y*
- 20.32%
- 10Y*
- 25.94%
AMT vs. IYW - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AMT American Tower Corporation | 4.18% | -0.92% | -12.16% | 5.37% | -25.67% | 32.89% | -0.48% | 47.87% | 13.32% | 37.71% |
IYW iShares U.S. Technology ETF | 21.96% | 25.38% | 30.25% | 65.44% | -34.83% | 35.44% | 47.45% | 46.64% | -0.93% | 36.60% |
Correlation
The correlation between AMT and IYW is -0.20, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | -0.20 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.08 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.15 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.23 |
Correlation (All Time) Calculated using the full available price history since May 19, 2000 | 0.39 |
The correlation between AMT and IYW shifts across timeframes, from -0.20 (1 year) to 0.39 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
AMT vs. IYW — Risk / Return Rank
AMT
IYW
AMT vs. IYW - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Tower Corporation (AMT) and iShares U.S. Technology ETF (IYW). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| AMT | IYW | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.77 | ||
| Sortino ratioReturn per unit of downside risk | -3.49 | ||
| Omega ratioGain probability vs. loss probability | 0.91 | 1.36 | -0.45 |
| Calmar ratioReturn relative to maximum drawdown | -0.60 | 2.65 | -3.25 |
| Martin ratioReturn relative to average drawdown | -0.86 | 8.46 | -9.32 |
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Drawdowns
AMT vs. IYW - Drawdown Comparison
The maximum AMT drawdown since its inception was -98.70%, which is greater than IYW's maximum drawdown of -81.90%. Use the drawdown chart below to compare losses from any high point for AMT and IYW.
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Drawdown Indicators
| AMT | IYW | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -98.70% | -81.90% | -16.80% |
Max Drawdown (1Y)Largest decline over 1 year | -26.67% | -17.81% | -8.86% |
Max Drawdown (3Y)Largest decline over 3 years | -27.54% | -26.47% | -1.07% |
Max Drawdown (5Y)Largest decline over 5 years | -45.34% | -39.44% | -5.90% |
Max Drawdown (10Y)Largest decline over 10 years | -45.34% | -39.44% | -5.90% |
Current DrawdownCurrent decline from peak | -30.93% | -6.35% | -24.58% |
Average DrawdownAverage peak-to-trough decline | -27.02% | -34.59% | +7.57% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 18.64% | 5.57% | +13.07% |
Volatility
AMT vs. IYW - Volatility Comparison
The current volatility for American Tower Corporation (AMT) is 8.61%, while iShares U.S. Technology ETF (IYW) has a volatility of 11.15%. This indicates that AMT experiences smaller price fluctuations and is considered to be less risky than IYW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AMT | IYW | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.61% | 11.15% | -2.54% |
Volatility (6M)Calculated over the trailing 6-month period | 19.60% | 18.45% | +1.15% |
Volatility (1Y)Calculated over the trailing 1-year period | 24.44% | 22.34% | +2.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 26.44% | 26.24% | +0.20% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 26.22% | 25.26% | +0.96% |
Dividends
AMT vs. IYW - Dividend Comparison
AMT's dividend yield for the trailing twelve months is around 3.89%, more than IYW's 0.11% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMT American Tower Corporation | 3.89% | 3.87% | 3.53% | 2.99% | 2.77% | 1.78% | 2.02% | 1.64% | 1.99% | 1.84% | 2.05% | 1.87% |
IYW iShares U.S. Technology ETF | 0.11% | 0.14% | 0.21% | 0.34% | 0.50% | 0.31% | 0.56% | 0.72% | 0.92% | 0.82% | 1.14% | 1.12% |
Frequently Asked Questions
AMT and IYW have a correlation of -0.20, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IYW has higher volatility (11.15%) compared to AMT (8.61%). In terms of maximum drawdown, AMT dropped -98.70% vs IYW's -81.90%.
IYW currently has the higher Sharpe Ratio (2.12 vs -0.66), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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