ARKX vs. BRK-B

Last updated Jun 6, 2026

ARKX (ARK Space Exploration & Innovation ETF) is Aerospace & Defense fund actively managed by ARK, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 5 years, ARKX returned 10.39%/yr vs 10.78%/yr for BRK-B. At a 0.35 correlation, their price movements are largely independent.

Performance

ARKX vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ARK Space Exploration & Innovation ETF (ARKX) 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, ARKX achieves a 17.46% return, which is significantly higher than BRK-B's -2.89% return.

ARKX

• 1D: -6.38%
• 1M: 0.65%
• YTD: 17.46%
• 6M: 19.82%
• 1Y: 62.33%
• 3Y*: 33.13%
• 5Y*: 10.39%
• 10Y*: —

BRK-B

• 1D: 1.98%
• 1M: 3.90%
• YTD: -2.89%
• 6M: -3.21%
• 1Y: -0.12%
• 3Y*: 13.55%
• 5Y*: 10.78%
• 10Y*: 13.19%

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

ARKX vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
ARKX ARK Space Exploration & Innovation ETF	17.46%	48.46%	26.67%	24.37%	-34.27%	-7.14%
BRK-B Berkshire Hathaway Inc.	-2.89%	10.89%	27.09%	15.46%	3.31%	15.81%

Correlation

The correlation between ARKX and BRK-B is -0.02, 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	-0.02
Correlation (3Y) Calculated over the trailing 3-year period	0.19
Correlation (5Y) Calculated over the trailing 5-year period	0.35
Correlation (All Time) Calculated using the full available price history since Mar 31, 2021	0.35

The correlation between ARKX and BRK-B shifts across timeframes, from -0.02 (1 year) to 0.35 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

ARKX vs. BRK-B — Risk / Return Rank

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

ARKX

ARKX Risk / Return Rank: 54
ARKX Sharpe Ratio Rank: 57
ARKX Sortino Ratio Rank: 52
ARKX Omega Ratio Rank: 48
ARKX Calmar Ratio Rank: 63
ARKX Martin Ratio Rank: 50

BRK-B

BRK-B Risk / Return Rank: 38
BRK-B Sharpe Ratio Rank: 41
BRK-B Sortino Ratio Rank: 33
BRK-B Omega Ratio Rank: 32
BRK-B Calmar Ratio Rank: 41
BRK-B Martin Ratio Rank: 41

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.

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

This table presents a comparison of risk-adjusted performance metrics for ARK Space Exploration & Innovation ETF (ARKX) 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.

	ARKX	BRK-B	Difference
Sharpe ratio: Return per unit of total volatility	1.89	-0.01	+1.90
Sortino ratio: Return per unit of downside risk	2.45	0.09	+2.36
Omega ratio: Gain probability vs. loss probability	1.29	1.01	+0.28
Calmar ratio: Return relative to maximum drawdown	3.07	-0.01	+3.08
Martin ratio: Return relative to average drawdown	8.23	-0.03	+8.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ARKX vs. BRK-B - Sharpe Ratio Comparison

The current ARKX Sharpe Ratio is 1.89, which is higher than the BRK-B Sharpe Ratio of -0.01. The chart below compares the historical Sharpe Ratios of ARKX 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.

Sharpe Ratios by Period

	ARKX	BRK-B	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.89	-0.01	+1.90
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.37	0.63	-0.26
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.68	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.48	-0.10

Drawdowns

ARKX vs. BRK-B - Drawdown Comparison

The maximum ARKX drawdown since its inception was -43.61%, smaller than the maximum BRK-B drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for ARKX and BRK-B.

Drawdown Indicators

	ARKX	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-43.61%	-53.86%	+10.25%
Max Drawdown (1Y) Largest decline over 1 year	-20.42%	-9.42%	-11.00%
Max Drawdown (3Y) Largest decline over 3 years	-25.47%	-14.95%	-10.52%
Max Drawdown (5Y) Largest decline over 5 years	-43.61%	-26.58%	-17.03%
Max Drawdown (10Y) Largest decline over 10 years	—	-29.57%	—
Current Drawdown Current decline from peak	-9.80%	-9.57%	-0.23%
Average Drawdown Average peak-to-trough decline	-19.97%	-11.07%	-8.90%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.60%	4.47%	+3.13%

Volatility

ARKX vs. BRK-B - Volatility Comparison

ARK Space Exploration & Innovation ETF (ARKX) has a higher volatility of 12.24% compared to Berkshire Hathaway Inc. (BRK-B) at 4.08%. This indicates that ARKX'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

	ARKX	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.24%	4.08%	+8.16%
Volatility (6M) Calculated over the trailing 6-month period	25.81%	10.87%	+14.94%
Volatility (1Y) Calculated over the trailing 1-year period	33.16%	14.39%	+18.77%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	27.86%	17.13%	+10.73%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.55%	19.43%	+8.12%

Dividends

ARKX vs. BRK-B - Dividend Comparison

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

Tickers have no history of dividend payments

Frequently Asked Questions

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

ARKX and BRK-B have a correlation of -0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ARKX or BRK-B?

ARKX has higher volatility (12.24%) compared to BRK-B (4.08%). In terms of maximum drawdown, ARKX dropped -43.61% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

ARKX currently has the higher Sharpe Ratio (1.89 vs -0.01), 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.