IYZ vs. BRK-B
IYZ (iShares U.S. Telecommunications ETF) is Communications Equities fund tracking the Dow Jones U.S. Select Telecommunications Index, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, IYZ returned 5.94%/yr vs 13.22%/yr for BRK-B. At a 0.43 correlation, their price movements are largely independent.
Performance
IYZ vs. BRK-B - Performance Comparison
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Returns By Period
In the year-to-date period, IYZ achieves a 29.57% return, which is significantly higher than BRK-B's -2.67% return. Over the past 10 years, IYZ has underperformed BRK-B with an annualized return of 5.94%, while BRK-B has yielded a comparatively higher 13.22% annualized return.
IYZ
- 1D
- 1.27%
- 1M
- 0.83%
- YTD
- 29.57%
- 6M
- 32.60%
- 1Y
- 58.27%
- 3Y*
- 28.37%
- 5Y*
- 7.57%
- 10Y*
- 5.94%
BRK-B
- 1D
- 0.71%
- 1M
- 1.07%
- YTD
- -2.67%
- 6M
- -2.06%
- 1Y
- 0.35%
- 3Y*
- 13.30%
- 5Y*
- 11.27%
- 10Y*
- 13.22%
IYZ vs. BRK-B - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IYZ iShares U.S. Telecommunications ETF | 29.57% | 29.28% | 20.53% | 3.90% | -30.29% | 11.69% | 4.13% | 16.14% | -8.59% | -11.86% |
BRK-B Berkshire Hathaway Inc. | -2.67% | 10.89% | 27.09% | 15.46% | 3.31% | 28.95% | 2.37% | 10.93% | 3.01% | 21.62% |
Correlation
The correlation between IYZ and BRK-B is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.12 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.31 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.46 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.51 |
Correlation (All Time) Calculated using the full available price history since May 26, 2000 | 0.43 |
Over the past year, the correlation between IYZ and BRK-B has dropped to 0.12 - well below their long-term average of 0.43, suggesting their price drivers have been diverging.
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Return for Risk
IYZ vs. BRK-B — Risk / Return Rank
IYZ
BRK-B
IYZ vs. BRK-B - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Telecommunications ETF (IYZ) and Berkshire Hathaway Inc. (BRK-B). 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.
| IYZ | BRK-B | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +3.04 | ||
| Sortino ratioReturn per unit of downside risk | +3.87 | ||
| Omega ratioGain probability vs. loss probability | 1.52 | 1.01 | +0.51 |
| Calmar ratioReturn relative to maximum drawdown | 6.54 | -0.02 | +6.56 |
| Martin ratioReturn relative to average drawdown | 25.99 | -0.05 | +26.04 |
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Drawdowns
IYZ vs. BRK-B - Drawdown Comparison
The maximum IYZ drawdown since its inception was -77.11%, which is greater than BRK-B's maximum drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for IYZ and BRK-B.
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Drawdown Indicators
| IYZ | BRK-B | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -77.11% | -53.86% | -23.25% |
Max Drawdown (1Y)Largest decline over 1 year | -8.62% | -9.42% | +0.80% |
Max Drawdown (3Y)Largest decline over 3 years | -13.85% | -14.95% | +1.10% |
Max Drawdown (5Y)Largest decline over 5 years | -39.74% | -26.58% | -13.16% |
Max Drawdown (10Y)Largest decline over 10 years | -39.74% | -29.57% | -10.17% |
Current DrawdownCurrent decline from peak | -4.77% | -9.36% | +4.59% |
Average DrawdownAverage peak-to-trough decline | -40.10% | -11.07% | -29.03% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.17% | 4.53% | -2.36% |
Volatility
IYZ vs. BRK-B - Volatility Comparison
iShares U.S. Telecommunications ETF (IYZ) has a higher volatility of 8.76% compared to Berkshire Hathaway Inc. (BRK-B) at 3.95%. This indicates that IYZ's price experiences larger fluctuations and is considered to be riskier than BRK-B based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IYZ | BRK-B | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.76% | 3.95% | +4.81% |
Volatility (6M)Calculated over the trailing 6-month period | 15.61% | 10.78% | +4.83% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.65% | 14.38% | +4.27% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.88% | 17.12% | +1.76% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.30% | 19.44% | -0.14% |
Dividends
IYZ vs. BRK-B - Dividend Comparison
IYZ's dividend yield for the trailing twelve months is around 1.53%, while BRK-B has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BRK-B Berkshire Hathaway Inc. | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
IYZ iShares U.S. Telecommunications ETF | 1.53% | 2.04% | 1.94% | 2.27% | 2.55% | 2.51% | 2.60% | 2.36% | 2.15% | 3.54% | 2.27% | 1.98% |
Frequently Asked Questions
IYZ and BRK-B have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IYZ has higher volatility (8.76%) compared to BRK-B (3.95%). In terms of maximum drawdown, IYZ dropped -77.11% vs BRK-B's -53.86%.
IYZ currently has the higher Sharpe Ratio (3.02 vs -0.02), 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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