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 11.36%/yr vs 12.55%/yr for BRK-A. At a 0.30 correlation, their price movements are largely independent.
Performance
CNKY.L vs. BRK-A - Performance Comparison
Loading charts...
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 29.82% return, which is significantly higher than BRK-A's -3.26% return. Over the past 10 years, CNKY.L has underperformed BRK-A with an annualized return of 11.36%, while BRK-A has yielded a comparatively higher 12.55% annualized return.
CNKY.L
- 1D
- -1.84%
- 1M
- -4.21%
- 6M
- 22.08%
- YTD
- 29.82%
- 1Y
- 56.71%
- 3Y*
- 21.39%
- 5Y*
- 12.24%
- 10Y*
- 11.36%
BRK-A
- 1D
- -1.55%
- 1M
- -2.06%
- 6M
- -1.98%
- YTD
- -3.26%
- 1Y
- 2.89%
- 3Y*
- 11.10%
- 5Y*
- 12.30%
- 10Y*
- 12.55%
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) | 29.82% | 20.64% | 9.15% | 15.02% | -10.53% | -4.18% | 21.18% | 16.38% | -3.99% | 14.19% |
BRK-A Berkshire Hathaway Inc. | -3.26% | 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 -0.11, 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 | -0.11 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.04 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.11 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.28 |
Correlation (All Time) Calculated using the full available price history since Jan 26, 2010 | 0.30 |
The correlation between CNKY.L and BRK-A shifts across timeframes, from -0.11 (1 year) to 0.30 (all time), reflecting how their relationship changes across market environments.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
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 | +2.07 | ||
| Sortino ratioReturn per unit of downside risk | +2.69 | ||
| Omega ratioGain probability vs. loss probability | 1.37 | 1.05 | +0.32 |
| Calmar ratioReturn relative to maximum drawdown | 4.24 | 0.24 | +3.99 |
| Martin ratioReturn relative to average drawdown | 11.91 | 0.51 | +11.39 |
Loading charts...
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.
Loading charts...
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 | -96.70% | -12.70% | -84.00% |
Average DrawdownAverage peak-to-trough decline | -95.12% | -7.39% | -87.73% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.75% | 5.66% | -0.91% |
Volatility
CNKY.L vs. BRK-A - Volatility Comparison
iShares Nikkei 225 UCITS ETF (Acc) (CNKY.L) has a higher volatility of 10.00% compared to Berkshire Hathaway Inc. (BRK-A) at 4.47%. 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.
Loading charts...
Volatility by Period
| CNKY.L | BRK-A | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 10.00% | 4.47% | +5.53% |
Volatility (6M)Calculated over the trailing 6-month period | 20.54% | 12.00% | +8.54% |
Volatility (1Y)Calculated over the trailing 1-year period | 25.00% | 15.49% | +9.51% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.41% | 17.02% | +1.39% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.46% | 19.25% | -1.79% |
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 -0.11, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
Find the right allocation for CNKY.L and BRK-A
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer