CNKY.L vs. BRK-A
CNKY.L (iShares Nikkei 225 UCITS ETF (Acc)) is Japan Equities fund tracking the TOPIX TR JPY, while BRK-A (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, CNKY.L returned 12.83%/yr vs 13.45%/yr for BRK-A. At a 0.31 correlation, their price movements are largely independent.
Performance
CNKY.L vs. BRK-A - Performance Comparison
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Different Trading Currencies
CNKY.L is traded in GBp, while BRK-A is traded in USD. To make them comparable, the BRK-A values have been converted to GBp using the latest available exchange rates.
Returns By Period
In the year-to-date period, CNKY.L achieves a 40.32% return, which is significantly higher than BRK-A's -0.81% return. Both investments have delivered pretty close results over the past 10 years, with CNKY.L having a 12.83% annualized return and BRK-A not far ahead at 13.45%.
CNKY.L
- 1D
- 2.04%
- 1M
- 9.44%
- YTD
- 40.32%
- 6M
- 40.20%
- 1Y
- 71.55%
- 3Y*
- 24.51%
- 5Y*
- 13.44%
- 10Y*
- 12.83%
BRK-A
- 1D
- -1.50%
- 1M
- 3.15%
- YTD
- -0.81%
- 6M
- -0.09%
- 1Y
- 3.99%
- 3Y*
- 11.69%
- 5Y*
- 12.97%
- 10Y*
- 13.45%
CNKY.L vs. BRK-A - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
CNKY.L iShares Nikkei 225 UCITS ETF (Acc) | 40.32% | 20.64% | 9.15% | 15.02% | -10.53% | -4.18% | 21.18% | 16.38% | -3.99% | 14.19% |
BRK-A Berkshire Hathaway Inc. | -0.81% | 2.95% | 27.68% | 9.98% | 16.37% | 30.80% | -0.59% | 6.76% | 8.92% | 11.36% |
Correlation
The correlation between CNKY.L and BRK-A is -0.10, 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 | -0.10 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.05 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.12 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.29 |
Correlation (All Time) Calculated using the full available price history since Jan 26, 2010 | 0.31 |
The correlation between CNKY.L and BRK-A shifts across timeframes, from -0.10 (1 year) to 0.31 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
CNKY.L vs. BRK-A — Risk / Return Rank
CNKY.L
BRK-A
CNKY.L vs. BRK-A - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Nikkei 225 UCITS ETF (Acc) (CNKY.L) and Berkshire Hathaway Inc. (BRK-A). 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.
| CNKY.L | BRK-A | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +2.69 | ||
| Sortino ratioReturn per unit of downside risk | +3.42 | ||
| Omega ratioGain probability vs. loss probability | 1.48 | 1.06 | +0.42 |
| Calmar ratioReturn relative to maximum drawdown | 5.34 | 0.33 | +5.01 |
| Martin ratioReturn relative to average drawdown | 15.91 | 0.72 | +15.19 |
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Drawdowns
CNKY.L vs. BRK-A - Drawdown Comparison
The maximum CNKY.L drawdown since its inception was -99.40%, which is greater than BRK-A's maximum drawdown of -36.09%. Use the drawdown chart below to compare losses from any high point for CNKY.L and BRK-A.
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Drawdown Indicators
| CNKY.L | BRK-A | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.40% | -36.09% | -63.31% |
Max Drawdown (1Y)Largest decline over 1 year | -13.32% | -11.98% | -1.34% |
Max Drawdown (3Y)Largest decline over 3 years | -19.39% | -17.21% | -2.18% |
Max Drawdown (5Y)Largest decline over 5 years | -20.83% | -20.59% | -0.24% |
Max Drawdown (10Y)Largest decline over 10 years | -23.61% | -21.87% | -1.74% |
Current DrawdownCurrent decline from peak | -96.44% | -10.48% | -85.96% |
Average DrawdownAverage peak-to-trough decline | -95.11% | -7.36% | -87.75% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.48% | 5.58% | -1.10% |
Volatility
CNKY.L vs. BRK-A - Volatility Comparison
iShares Nikkei 225 UCITS ETF (Acc) (CNKY.L) has a higher volatility of 9.49% compared to Berkshire Hathaway Inc. (BRK-A) at 4.43%. This indicates that CNKY.L's price experiences larger fluctuations and is considered to be riskier than BRK-A based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CNKY.L | BRK-A | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 9.49% | 4.43% | +5.06% |
Volatility (6M)Calculated over the trailing 6-month period | 19.72% | 11.62% | +8.10% |
Volatility (1Y)Calculated over the trailing 1-year period | 24.14% | 15.31% | +8.83% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.18% | 17.00% | +1.18% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.36% | 19.28% | -1.92% |
Dividends
CNKY.L vs. BRK-A - Dividend Comparison
Neither CNKY.L nor BRK-A has paid dividends to shareholders.
Frequently Asked Questions
CNKY.L and BRK-A have a correlation of -0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
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