IYW vs. BRK-B
IYW (iShares U.S. Technology ETF) is Technology Equities fund tracking the Russell 1000 Technology RIC 22.5/45 Capped Index, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, IYW returned 25.53%/yr vs 13.14%/yr for BRK-B. At a 0.37 correlation, their price movements are largely independent.
Performance
IYW vs. BRK-B - Performance Comparison
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Returns By Period
In the year-to-date period, IYW achieves a 22.81% return, which is significantly higher than BRK-B's -3.11% return. Over the past 10 years, IYW has outperformed BRK-B with an annualized return of 25.53%, while BRK-B has yielded a comparatively lower 13.14% annualized return.
IYW
- 1D
- 1.61%
- 1M
- 2.72%
- YTD
- 22.81%
- 6M
- 20.20%
- 1Y
- 50.11%
- 3Y*
- 33.35%
- 5Y*
- 21.56%
- 10Y*
- 25.53%
BRK-B
- 1D
- -0.23%
- 1M
- 2.32%
- YTD
- -3.11%
- 6M
- -2.06%
- 1Y
- -1.32%
- 3Y*
- 13.25%
- 5Y*
- 11.03%
- 10Y*
- 13.14%
IYW vs. BRK-B - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IYW iShares U.S. Technology ETF | 22.81% | 25.38% | 30.25% | 65.44% | -34.83% | 35.44% | 47.45% | 46.64% | -0.93% | 36.60% |
BRK-B Berkshire Hathaway Inc. | -3.11% | 10.89% | 27.09% | 15.46% | 3.31% | 28.95% | 2.37% | 10.93% | 3.01% | 21.62% |
Correlation
The correlation between IYW and BRK-B is -0.14, 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 | -0.14 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.10 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.30 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.38 |
Correlation (All Time) Calculated using the full available price history since May 19, 2000 | 0.37 |
The correlation between IYW and BRK-B shifts across timeframes, from -0.14 (1 year) to 0.38 (10 years), reflecting how their relationship changes across market environments.
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Return for Risk
IYW vs. BRK-B — Risk / Return Rank
IYW
BRK-B
IYW vs. BRK-B - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Technology ETF (IYW) 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.
| IYW | BRK-B | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +2.49 | ||
| Sortino ratioReturn per unit of downside risk | +2.99 | ||
| Omega ratioGain probability vs. loss probability | 1.40 | 1.00 | +0.41 |
| Calmar ratioReturn relative to maximum drawdown | 2.83 | -0.14 | +2.97 |
| Martin ratioReturn relative to average drawdown | 9.20 | -0.30 | +9.50 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| IYW | BRK-B | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.40 | -0.09 | +2.49 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.83 | 0.65 | +0.19 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 1.02 | 0.68 | +0.34 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.35 | 0.48 | -0.14 |
Drawdowns
IYW vs. BRK-B - Drawdown Comparison
The maximum IYW drawdown since its inception was -81.90%, 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 IYW and BRK-B.
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Drawdown Indicators
| IYW | BRK-B | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -81.90% | -53.86% | -28.04% |
Max Drawdown (1Y)Largest decline over 1 year | -17.81% | -9.42% | -8.39% |
Max Drawdown (3Y)Largest decline over 3 years | -26.47% | -14.95% | -11.52% |
Max Drawdown (5Y)Largest decline over 5 years | -39.44% | -26.58% | -12.86% |
Max Drawdown (10Y)Largest decline over 10 years | -39.44% | -29.57% | -9.87% |
Current DrawdownCurrent decline from peak | -5.70% | -9.78% | +4.08% |
Average DrawdownAverage peak-to-trough decline | -34.64% | -11.07% | -23.57% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.46% | 4.49% | +0.97% |
Volatility
IYW vs. BRK-B - Volatility Comparison
iShares U.S. Technology ETF (IYW) has a higher volatility of 8.86% compared to Berkshire Hathaway Inc. (BRK-B) at 3.98%. This indicates that IYW'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
| IYW | BRK-B | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.86% | 3.98% | +4.88% |
Volatility (6M)Calculated over the trailing 6-month period | 17.10% | 10.87% | +6.23% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.05% | 14.38% | +6.67% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 26.01% | 17.13% | +8.88% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 25.18% | 19.44% | +5.74% |
Dividends
IYW vs. BRK-B - Dividend Comparison
IYW's dividend yield for the trailing twelve months is around 0.11%, 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% |
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
IYW and BRK-B have a correlation of -0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IYW has higher volatility (8.86%) compared to BRK-B (3.98%). In terms of maximum drawdown, IYW dropped -81.90% vs BRK-B's -53.86%.
IYW currently has the higher Sharpe Ratio (2.40 vs -0.09), 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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