BRK-B vs. DOG

Last updated Jun 13, 2026

BRK-B (Berkshire Hathaway Inc.) is a stock, while DOG (ProShares Short Dow30) is Inverse Equities fund tracking the DJ Industrial Average (-100%). Over the past 10 years, BRK-B returned 13.22%/yr vs -11.31%/yr for DOG. At a correlation of -0.66, they often move in opposite directions.

Performance

BRK-B vs. DOG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Berkshire Hathaway Inc. (BRK-B) and ProShares Short Dow30 (DOG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BRK-B achieves a -2.67% return, which is significantly higher than DOG's -4.92% return. Over the past 10 years, BRK-B has outperformed DOG with an annualized return of 13.22%, while DOG has yielded a comparatively lower -11.31% annualized return.

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%

DOG

• 1D: -0.63%
• 1M: -2.03%
• YTD: -4.92%
• 6M: -3.86%
• 1Y: -14.29%
• 3Y*: -8.19%
• 5Y*: -5.62%
• 10Y*: -11.31%

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

BRK-B vs. DOG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
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%
DOG ProShares Short Dow30	-4.92%	-8.40%	-5.62%	-7.05%	5.67%	-19.21%	-20.45%	-18.43%	3.55%	-21.51%

Correlation

The correlation between BRK-B and DOG is -0.33, 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	-0.33
Correlation (3Y) Calculated over the trailing 3-year period	-0.51
Correlation (5Y) Calculated over the trailing 5-year period	-0.64
Correlation (10Y) Calculated over the trailing 10-year period	-0.70
Correlation (All Time) Calculated using the full available price history since Jun 21, 2006	-0.66

Over the past year, the inverse relationship between BRK-B and DOG has weakened: their correlation has moved from -0.66 to -0.33, meaning they move in opposite directions less often than they have historically.

Return for Risk

BRK-B vs. DOG — Risk / Return Rank

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

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

DOG

DOG Risk / Return Rank: 2
DOG Sharpe Ratio Rank: 1
DOG Sortino Ratio Rank: 2
DOG Omega Ratio Rank: 2
DOG Calmar Ratio Rank: 2
DOG Martin Ratio Rank: 2

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.

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

This table presents a comparison of risk-adjusted performance metrics for Berkshire Hathaway Inc. (BRK-B) and ProShares Short Dow30 (DOG). 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.

	BRK-B	DOG	Difference
Sharpe ratio: Return per unit of total volatility	-0.02	-1.01	+1.00
Sortino ratio: Return per unit of downside risk	0.08	-1.37	+1.44
Omega ratio: Gain probability vs. loss probability	1.01	0.85	+0.16
Calmar ratio: Return relative to maximum drawdown	-0.02	-0.84	+0.82
Martin ratio: Return relative to average drawdown	-0.05	-1.38	+1.33

BRK-B vs. DOG - Sharpe Ratio Comparison

The current BRK-B Sharpe Ratio is -0.02, which is higher than the DOG Sharpe Ratio of -1.01. The chart below compares the historical Sharpe Ratios of BRK-B and DOG, 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

BRK-B vs. DOG - Drawdown Comparison

The maximum BRK-B drawdown since its inception was -53.86%, smaller than the maximum DOG drawdown of -92.73%. Use the drawdown chart below to compare losses from any high point for BRK-B and DOG.

Drawdown Indicators

	BRK-B	DOG	Difference
Max Drawdown Largest peak-to-trough decline	-53.86%	-92.73%	+38.87%
Max Drawdown (1Y) Largest decline over 1 year	-9.42%	-15.09%	+5.67%
Max Drawdown (3Y) Largest decline over 3 years	-14.95%	-29.16%	+14.21%
Max Drawdown (5Y) Largest decline over 5 years	-26.58%	-34.35%	+7.77%
Max Drawdown (10Y) Largest decline over 10 years	-29.57%	-70.95%	+41.38%
Current Drawdown Current decline from peak	-9.36%	-92.67%	+83.31%
Average Drawdown Average peak-to-trough decline	-11.07%	-66.41%	+55.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.53%	9.18%	-4.65%

Volatility

BRK-B vs. DOG - Volatility Comparison

The current volatility for Berkshire Hathaway Inc. (BRK-B) is 3.95%, while ProShares Short Dow30 (DOG) has a volatility of 4.36%. This indicates that BRK-B experiences smaller price fluctuations and is considered to be less risky than DOG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRK-B	DOG	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.95%	4.36%	-0.41%
Volatility (6M) Calculated over the trailing 6-month period	10.78%	9.87%	+0.91%
Volatility (1Y) Calculated over the trailing 1-year period	14.38%	12.56%	+1.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.12%	14.86%	+2.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.44%	17.51%	+1.93%

Dividends

BRK-B vs. DOG - Dividend Comparison

BRK-B has not paid dividends to shareholders, while DOG's dividend yield for the trailing twelve months is around 3.52%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
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%
DOG ProShares Short Dow30	3.52%	3.65%	5.72%	4.54%	0.41%	0.00%	0.14%	1.54%	0.86%	0.04%

Frequently Asked Questions

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

BRK-B and DOG have a correlation of -0.33, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BRK-B or DOG?

DOG has higher volatility (4.36%) compared to BRK-B (3.95%). In terms of maximum drawdown, BRK-B dropped -53.86% vs DOG's -92.73%.

Which has better risk-adjusted returns?

BRK-B currently has the higher Sharpe Ratio (-0.02 vs -1.01), 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.