DIA vs. DMAY

Last updated Jun 4, 2026

DIA (State Street SPDR Dow Jones Industrial Average ETF Trust) and DMAY (FT Cboe Vest U.S. Equity Deep Buffer ETF - May) are both Large Cap Blend Equities funds - DIA tracks the Dow Jones Industrial Average while DMAY tracks the Cboe S&P 500 30% (-5% to -35%) Buffer Protect May Series Index. Both are passively managed. Over the past 5 years, DIA returned 9.76%/yr vs 7.16%/yr for DMAY. A 0.79 correlation means they provide meaningful diversification when combined. DIA charges 0.16%/yr vs 0.85%/yr for DMAY.

Performance

DIA vs. DMAY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street SPDR Dow Jones Industrial Average ETF Trust (DIA) and FT Cboe Vest U.S. Equity Deep Buffer ETF - May (DMAY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DIA achieves a 6.26% return, which is significantly higher than DMAY's 4.42% return.

DIA

• 1D: -1.13%
• 1M: 3.88%
• YTD: 6.26%
• 6M: 6.75%
• 1Y: 21.13%
• 3Y*: 16.45%
• 5Y*: 9.76%
• 10Y*: 13.21%

DMAY

• 1D: -0.30%
• 1M: 1.30%
• YTD: 4.42%
• 6M: 5.19%
• 1Y: 12.37%
• 3Y*: 11.96%
• 5Y*: 7.16%
• 10Y*: —

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

DIA vs. DMAY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
DIA State Street SPDR Dow Jones Industrial Average ETF Trust	6.26%	14.71%	14.82%	16.02%	-7.02%	20.83%	25.94%
DMAY FT Cboe Vest U.S. Equity Deep Buffer ETF - May	4.42%	11.05%	12.82%	15.40%	-9.98%	6.14%	6.40%

Correlation

The correlation between DIA and DMAY 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	0.75
Correlation (5Y) Calculated over the trailing 5-year period	0.82
Correlation (All Time) Calculated using the full available price history since May 19, 2020	0.79

The correlation between DIA and DMAY has been stable across timeframes, ranging from 0.75 to 0.82 - a consistent structural relationship.

DIA vs. DMAY - Sectors Allocation Comparison

Sectors	DIA	DMAY
Financial Services	27.2%	11.9%
Industrials	18.4%	8.1%
Technology	17.1%	36.2%
Healthcare	13.1%	8.4%
Consumer Cyclical	11.6%	10.1%
Consumer Defensive	4.4%	4.9%
Basic Materials	4.0%	1.8%
Energy	2.4%	3.5%
Communication Services	1.9%	10.9%
Real Estate	-	1.9%
Utilities	-	2.3%

Return for Risk

DIA vs. DMAY — Risk / Return Rank

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

DIA

DIA Risk / Return Rank: 48
DIA Sharpe Ratio Rank: 50
DIA Sortino Ratio Rank: 52
DIA Omega Ratio Rank: 49
DIA Calmar Ratio Rank: 43
DIA Martin Ratio Rank: 49

DMAY

DMAY Risk / Return Rank: 85
DMAY Sharpe Ratio Rank: 82
DMAY Sortino Ratio Rank: 88
DMAY Omega Ratio Rank: 91
DMAY Calmar Ratio Rank: 75
DMAY Martin Ratio Rank: 92

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.

DIA vs. DMAY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street SPDR Dow Jones Industrial Average ETF Trust (DIA) and FT Cboe Vest U.S. Equity Deep Buffer ETF - May (DMAY). 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.

	DIA	DMAY	Difference
Sharpe ratio: Return per unit of total volatility	1.76	2.65	-0.90
Sortino ratio: Return per unit of downside risk	2.57	4.00	-1.44
Omega ratio: Gain probability vs. loss probability	1.31	1.60	-0.29
Calmar ratio: Return relative to maximum drawdown	2.18	3.73	-1.55
Martin ratio: Return relative to average drawdown	8.42	22.76	-14.34
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DIA vs. DMAY - Sharpe Ratio Comparison

The current DIA Sharpe Ratio is 1.76, which is lower than the DMAY Sharpe Ratio of 2.65. The chart below compares the historical Sharpe Ratios of DIA and DMAY, 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

	DIA	DMAY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.76	2.65	-0.90
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.66	0.80	-0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.49	0.88	-0.39

Drawdowns

DIA vs. DMAY - Drawdown Comparison

The maximum DIA drawdown since its inception was -51.87%, which is greater than DMAY's maximum drawdown of -13.90%. Use the drawdown chart below to compare losses from any high point for DIA and DMAY.

Drawdown Indicators

	DIA	DMAY	Difference
Max Drawdown Largest peak-to-trough decline	-51.87%	-13.90%	-37.97%
Max Drawdown (1Y) Largest decline over 1 year	-9.76%	-3.36%	-6.40%
Max Drawdown (3Y) Largest decline over 3 years	-15.95%	-12.38%	-3.57%
Max Drawdown (5Y) Largest decline over 5 years	-20.76%	-13.90%	-6.86%
Max Drawdown (10Y) Largest decline over 10 years	-36.70%	—	—
Current Drawdown Current decline from peak	-1.13%	-0.30%	-0.83%
Average Drawdown Average peak-to-trough decline	-7.14%	-2.24%	-4.90%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.52%	0.55%	+1.97%

Volatility

DIA vs. DMAY - Volatility Comparison

State Street SPDR Dow Jones Industrial Average ETF Trust (DIA) has a higher volatility of 2.97% compared to FT Cboe Vest U.S. Equity Deep Buffer ETF - May (DMAY) at 0.84%. This indicates that DIA's price experiences larger fluctuations and is considered to be riskier than DMAY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DIA	DMAY	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.97%	0.84%	+2.13%
Volatility (6M) Calculated over the trailing 6-month period	9.28%	3.74%	+5.54%
Volatility (1Y) Calculated over the trailing 1-year period	12.10%	4.73%	+7.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.78%	9.02%	+5.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.53%	8.43%	+9.10%

DIA vs. DMAY - Expense Ratio Comparison

DIA has a 0.16% expense ratio, which is lower than DMAY's 0.85% expense ratio.

Dividends

DIA vs. DMAY - Dividend Comparison

DIA's dividend yield for the trailing twelve months is around 1.38%, while DMAY has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DIA State Street SPDR Dow Jones Industrial Average ETF Trust	1.38%	1.43%	1.61%	1.81%	1.91%	1.58%	1.87%	1.85%	2.24%	1.97%	2.26%	2.33%
DMAY FT Cboe Vest U.S. Equity Deep Buffer ETF - May	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 DIA and DMAY in my portfolio?

DIA and DMAY 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, DIA or DMAY?

DIA has higher volatility (2.97%) compared to DMAY (0.84%). In terms of maximum drawdown, DIA dropped -51.87% vs DMAY's -13.90%.

Which ETF is better, DIA or DMAY?

On 5-year performance, DIA leads with 9.76% vs 7.16% for DMAY. On fees, DIA is cheaper at 0.16% per year. On volatility, DMAY has been the lower-risk option at 0.84%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, DIA or DMAY?

Over the 5-year period, DIA has performed better with a 9.76% return vs 7.16%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, DIA or DMAY?

DIA is cheaper with a 0.16% expense ratio, compared with 0.85% for DMAY.

Which ETF pays a higher dividend yield, DIA or DMAY?

DIA has the higher dividend yield at 1.38%, compared with 0.00% for DMAY.

What is the main difference between DIA and DMAY?

DIA tracks Dow Jones Industrial Average, while DMAY tracks Cboe S&P 500 30% (-5% to -35%) Buffer Protect May Series Index. They also come from different issuers: State Street and First Trust. Their fees differ too: 0.16% for DIA and 0.85% for DMAY.

Which has better risk-adjusted returns?

DMAY currently has the higher Sharpe Ratio (2.65 vs 1.76), 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.