ARKK vs. BRK-B

Last updated Jun 14, 2026

ARKK (ARK Innovation ETF) is Technology Equities fund actively managed by ARK, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, ARKK returned 15.57%/yr vs 13.22%/yr for BRK-B. At a 0.30 correlation, their price movements are largely independent.

Performance

ARKK vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ARK Innovation ETF (ARKK) and Berkshire Hathaway Inc. (BRK-B). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ARKK achieves a -1.65% return, which is significantly higher than BRK-B's -2.67% return. Over the past 10 years, ARKK has outperformed BRK-B with an annualized return of 15.57%, while BRK-B has yielded a comparatively lower 13.22% annualized return.

ARKK

• 1D: 0.25%
• 1M: -3.01%
• YTD: -1.65%
• 6M: -5.90%
• 1Y: 21.64%
• 3Y*: 19.87%
• 5Y*: -7.96%
• 10Y*: 15.57%

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%

*Multi-year figures are annualized to reflect compound growth (CAGR)

ARKK vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ARKK ARK Innovation ETF	-1.65%	35.49%	8.40%	69.04%	-66.97%	-23.60%	152.71%	35.08%	3.52%	87.33%
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 ARKK and BRK-B is -0.03, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.03
Correlation (3Y) Calculated over the trailing 3-year period	0.17
Correlation (5Y) Calculated over the trailing 5-year period	0.26
Correlation (10Y) Calculated over the trailing 10-year period	0.29
Correlation (All Time) Calculated using the full available price history since Oct 31, 2014	0.30

The correlation between ARKK and BRK-B shifts across timeframes, from -0.03 (1 year) to 0.30 (all time), reflecting how their relationship changes across market environments.

Return for Risk

ARKK vs. BRK-B — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

ARKK

ARKK Risk / Return Rank: 20
ARKK Sharpe Ratio Rank: 21
ARKK Sortino Ratio Rank: 22
ARKK Omega Ratio Rank: 20
ARKK Calmar Ratio Rank: 19
ARKK Martin Ratio Rank: 17

BRK-B

BRK-B Risk / Return Rank: 39
BRK-B Sharpe Ratio Rank: 42
BRK-B Sortino Ratio Rank: 34
BRK-B Omega Ratio Rank: 33
BRK-B Calmar Ratio Rank: 42
BRK-B Martin Ratio Rank: 42

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

ARKK vs. BRK-B - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ARK Innovation ETF (ARKK) 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.

	ARKK	BRK-B	Difference
Sharpe ratio: Return per unit of total volatility	0.61	-0.02	+0.63
Sortino ratio: Return per unit of downside risk	1.06	0.08	+0.98
Omega ratio: Gain probability vs. loss probability	1.12	1.01	+0.11
Calmar ratio: Return relative to maximum drawdown	0.70	-0.02	+0.73
Martin ratio: Return relative to average drawdown	1.53	-0.05	+1.58

ARKK vs. BRK-B - Sharpe Ratio Comparison

The current ARKK Sharpe Ratio is 0.61, which is higher than the BRK-B Sharpe Ratio of -0.02. The chart below compares the historical Sharpe Ratios of ARKK and BRK-B, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

ARKK vs. BRK-B - Drawdown Comparison

The maximum ARKK drawdown since its inception was -80.97%, 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 ARKK and BRK-B.

Drawdown Indicators

	ARKK	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-80.97%	-53.86%	-27.11%
Max Drawdown (1Y) Largest decline over 1 year	-31.35%	-9.42%	-21.93%
Max Drawdown (3Y) Largest decline over 3 years	-39.56%	-14.95%	-24.61%
Max Drawdown (5Y) Largest decline over 5 years	-77.23%	-26.58%	-50.65%
Max Drawdown (10Y) Largest decline over 10 years	-80.97%	-29.57%	-51.40%
Current Drawdown Current decline from peak	-51.01%	-9.36%	-41.65%
Average Drawdown Average peak-to-trough decline	-30.16%	-11.07%	-19.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	14.39%	4.53%	+9.86%

Volatility

ARKK vs. BRK-B - Volatility Comparison

ARK Innovation ETF (ARKK) has a higher volatility of 11.81% compared to Berkshire Hathaway Inc. (BRK-B) at 3.95%. This indicates that ARKK'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.

Volatility by Period

	ARKK	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.81%	3.95%	+7.86%
Volatility (6M) Calculated over the trailing 6-month period	26.30%	10.78%	+15.52%
Volatility (1Y) Calculated over the trailing 1-year period	36.28%	14.38%	+21.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	46.40%	17.12%	+29.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	40.34%	19.44%	+20.90%

Dividends

ARKK vs. BRK-B - Dividend Comparison

Neither ARKK nor BRK-B has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ARKK ARK Innovation ETF	0.00%	0.00%	0.00%	0.70%	0.00%	0.55%	1.64%	0.38%	3.14%	1.32%	0.00%	2.27%
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%

Frequently Asked Questions

Can I hold both ARKK and BRK-B in my portfolio?

ARKK and BRK-B have a correlation of -0.03, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ARKK or BRK-B?

ARKK has higher volatility (11.81%) compared to BRK-B (3.95%). In terms of maximum drawdown, ARKK dropped -80.97% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

ARKK currently has the higher Sharpe Ratio (0.61 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.