DOG vs. MYY

Last updated Jul 14, 2026

DOG (ProShares Short Dow30) and MYY (ProShares Short S&P Mid Cap400) are both Inverse Equities funds from ProShares - DOG tracks the DJ Industrial Average (-100%) while MYY tracks the S&P Mid Cap 400 (-100%). Both are passively managed. Over the past 10 years, DOG returned -11.05%/yr vs -10.79%/yr for MYY. Their correlation of 0.84 suggests significant overlap in exposure. Both charge a 0.95% expense ratio.

Performance

DOG vs. MYY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares Short Dow30 (DOG) and ProShares Short S&P Mid Cap400 (MYY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DOG achieves a -6.96% return, which is significantly higher than MYY's -11.03% return. Both investments have delivered pretty close results over the past 10 years, with DOG having a -11.05% annualized return and MYY not far ahead at -10.79%.

DOG

• 1D: 0.28%
• 1M: -2.15%
• 6M: -4.11%
• YTD: -6.96%
• 1Y: -12.16%
• 3Y*: -8.78%
• 5Y*: -5.73%
• 10Y*: -11.05%

MYY

• 1D: 0.53%
• 1M: 1.24%
• 6M: -6.84%
• YTD: -11.03%
• 1Y: -13.14%
• 3Y*: -8.04%
• 5Y*: -6.30%
• 10Y*: -10.79%

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

DOG vs. MYY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DOG ProShares Short Dow30	-6.96%	-8.40%	-5.62%	-7.05%	5.67%	-19.21%	-20.45%	-18.43%	3.55%	-21.51%
MYY ProShares Short S&P Mid Cap400	-11.03%	-4.05%	-7.08%	-9.46%	10.23%	-23.04%	-25.94%	-19.98%	12.79%	-14.63%

Correlation

The correlation between DOG and MYY is 0.78, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.82
Correlation (All Time) Calculated using the full available price history since Jun 21, 2006	0.84

The correlation between DOG and MYY has been stable across timeframes, ranging from 0.78 to 0.84 - a consistent structural relationship.

Return for Risk

DOG vs. MYY — Risk / Return Rank

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

DOG

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

MYY

MYY Risk / Return Rank: 3
MYY Sharpe Ratio Rank: 3
MYY Sortino Ratio Rank: 3
MYY Omega Ratio Rank: 3
MYY Calmar Ratio Rank: 3
MYY 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.

DOG vs. MYY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares Short Dow30 (DOG) and ProShares Short S&P Mid Cap400 (MYY). 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.

	DOG	MYY	Difference
Sharpe ratio: Return per unit of total volatility	-0.99	-0.83	-0.15
Sortino ratio: Return per unit of downside risk	-1.33	-1.09	-0.24
Omega ratio: Gain probability vs. loss probability	0.85	0.87	-0.03
Calmar ratio: Return relative to maximum drawdown	-0.81	-0.72	-0.09
Martin ratio: Return relative to average drawdown	-1.52	-1.36	-0.16

DOG vs. MYY - Sharpe Ratio Comparison

The current DOG Sharpe Ratio is -0.99, which is comparable to the MYY Sharpe Ratio of -0.83. The chart below compares the historical Sharpe Ratios of DOG and MYY, 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

DOG vs. MYY - Drawdown Comparison

The maximum DOG drawdown since its inception was -92.90%, roughly equal to the maximum MYY drawdown of -95.20%. Use the drawdown chart below to compare losses from any high point for DOG and MYY.

Drawdown Indicators

	DOG	MYY	Difference
Max Drawdown Largest peak-to-trough decline	-92.90%	-95.20%	+2.30%
Max Drawdown (1Y) Largest decline over 1 year	-15.02%	-18.25%	+3.23%
Max Drawdown (3Y) Largest decline over 3 years	-30.86%	-35.14%	+4.28%
Max Drawdown (5Y) Largest decline over 5 years	-35.93%	-37.79%	+1.86%
Max Drawdown (10Y) Largest decline over 10 years	-70.07%	-71.93%	+1.86%
Current Drawdown Current decline from peak	-92.82%	-95.07%	+2.25%
Average Drawdown Average peak-to-trough decline	-66.51%	-72.25%	+5.74%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.99%	9.65%	-1.66%

Volatility

DOG vs. MYY - Volatility Comparison

The current volatility for ProShares Short Dow30 (DOG) is 3.11%, while ProShares Short S&P Mid Cap400 (MYY) has a volatility of 4.22%. This indicates that DOG experiences smaller price fluctuations and is considered to be less risky than MYY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DOG	MYY	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.11%	4.22%	-1.11%
Volatility (6M) Calculated over the trailing 6-month period	9.78%	11.69%	-1.91%
Volatility (1Y) Calculated over the trailing 1-year period	12.36%	15.83%	-3.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.83%	19.60%	-4.77%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.47%	21.21%	-3.74%

DOG vs. MYY - Expense Ratio Comparison

Both DOG and MYY have an expense ratio of 0.95%.

Dividends

DOG vs. MYY - Dividend Comparison

DOG's dividend yield for the trailing twelve months is around 3.39%, less than MYY's 4.29% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
DOG ProShares Short Dow30	3.39%	3.65%	5.72%	4.54%	0.41%	0.00%	0.14%	1.54%	0.86%	0.04%
MYY ProShares Short S&P Mid Cap400	4.29%	4.20%	4.92%	5.08%	0.40%	0.00%	0.05%	1.52%	0.34%	0.00%

Frequently Asked Questions

Can I hold both DOG and MYY in my portfolio?

DOG and MYY have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DOG or MYY?

MYY has higher volatility (4.22%) compared to DOG (3.11%). In terms of maximum drawdown, DOG dropped -92.90% vs MYY's -95.20%.

Which ETF is better, DOG or MYY?

On 10-year performance, MYY leads with -10.79% vs -11.05% for DOG. Both ETFs have the same 0.95% expense ratio. On volatility, DOG has been the lower-risk option at 3.11%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, DOG or MYY?

Over the 10-year period, MYY has performed better with a -10.79% return vs -11.05%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, DOG or MYY?

DOG and MYY have the same expense ratio: 0.95% per year.

Which ETF pays a higher dividend yield, DOG or MYY?

MYY has the higher dividend yield at 4.29%, compared with 3.39% for DOG.

What is the main difference between DOG and MYY?

DOG tracks DJ Industrial Average (-100%), while MYY tracks S&P Mid Cap 400 (-100%).

Which has better risk-adjusted returns?

MYY currently has the higher Sharpe Ratio (-0.83 vs -0.99), 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.