MDYG vs. VO

Last updated Jun 3, 2026

MDYG (SPDR S&P 400 Mid Cap Growth ETF) and VO (Vanguard Mid-Cap ETF) are both exchange-traded funds - MDYG is a Mid Cap Growth Equities fund tracking the S&P MidCap 400 Growth Index, while VO is a Mid Cap Blend Equities fund tracking the CRSP US Mid Cap Index. Both are passively managed. Over the past 10 years, MDYG returned 11.56%/yr vs 11.60%/yr for VO. Their correlation of 0.92 suggests significant overlap in exposure. MDYG charges 0.15%/yr vs 0.03%/yr for VO.

Performance

MDYG vs. VO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SPDR S&P 400 Mid Cap Growth ETF (MDYG) and Vanguard Mid-Cap ETF (VO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MDYG achieves a 18.89% return, which is significantly higher than VO's 10.55% return. Both investments have delivered pretty close results over the past 10 years, with MDYG having a 11.56% annualized return and VO not far ahead at 11.60%.

MDYG

• 1D: 0.71%
• 1M: 5.46%
• YTD: 18.89%
• 6M: 19.67%
• 1Y: 31.29%
• 3Y*: 17.97%
• 5Y*: 8.74%
• 10Y*: 11.56%

VO

• 1D: 0.91%
• 1M: 3.47%
• YTD: 10.55%
• 6M: 11.09%
• 1Y: 19.85%
• 3Y*: 16.87%
• 5Y*: 8.11%
• 10Y*: 11.60%

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

MDYG vs. VO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MDYG SPDR S&P 400 Mid Cap Growth ETF	18.89%	7.22%	15.84%	17.30%	-18.92%	18.46%	22.57%	26.10%	-10.46%	19.61%
VO Vanguard Mid-Cap ETF	10.55%	11.62%	15.31%	16.03%	-18.73%	24.70%	18.10%	30.98%	-9.24%	19.28%

Correlation

The correlation between MDYG and VO is 0.89, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Nov 16, 2005	0.92

The correlation between MDYG and VO has been stable across timeframes, ranging from 0.89 to 0.95 - a consistent structural relationship.

MDYG vs. VO - Sectors Allocation Comparison

Sectors	MDYG	VO
Industrials	30.9%	17.9%
Technology	21.5%	18.6%
Healthcare	13.7%	7.6%
Consumer Cyclical	8.1%	8.6%
Financial Services	7.1%	12.8%
Real Estate	5.6%	5.4%
Energy	3.7%	8.5%
Basic Materials	3.7%	4.2%
Consumer Defensive	2.1%	4.8%
Utilities	2.0%	8.3%
Communication Services	1.5%	3.1%

Return for Risk

MDYG vs. VO — Risk / Return Rank

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

MDYG

MDYG Risk / Return Rank: 58
MDYG Sharpe Ratio Rank: 53
MDYG Sortino Ratio Rank: 54
MDYG Omega Ratio Rank: 51
MDYG Calmar Ratio Rank: 63
MDYG Martin Ratio Rank: 68

VO

VO Risk / Return Rank: 48
VO Sharpe Ratio Rank: 46
VO Sortino Ratio Rank: 47
VO Omega Ratio Rank: 44
VO Calmar Ratio Rank: 49
VO Martin Ratio Rank: 54

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.

MDYG vs. VO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR S&P 400 Mid Cap Growth ETF (MDYG) and Vanguard Mid-Cap ETF (VO). 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.

	MDYG	VO	Difference
Sharpe ratio Return per unit of total volatility	1.84	1.62	+0.23
Sortino ratio Return per unit of downside risk	2.63	2.32	+0.32
Omega ratio Gain probability vs. loss probability	1.32	1.28	+0.04
Calmar ratio Return relative to maximum drawdown	3.17	2.46	+0.70
Martin ratio Return relative to average drawdown	12.69	9.40	+3.29
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MDYG vs. VO - Sharpe Ratio Comparison

The current MDYG Sharpe Ratio is 1.84, which is comparable to the VO Sharpe Ratio of 1.62. The chart below compares the historical Sharpe Ratios of MDYG and VO, 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

	MDYG	VO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.84	1.62	+0.23
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	0.46	-0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	0.61	-0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.50	-0.02

Drawdowns

MDYG vs. VO - Drawdown Comparison

The maximum MDYG drawdown since its inception was -58.44%, roughly equal to the maximum VO drawdown of -58.87%. Use the drawdown chart below to compare losses from any high point for MDYG and VO.

Drawdown Indicators

	MDYG	VO	Difference
Max Drawdown Largest peak-to-trough decline	-58.44%	-58.87%	+0.43%
Max Drawdown (1Y) Largest decline over 1 year	-9.91%	-8.17%	-1.74%
Max Drawdown (3Y) Largest decline over 3 years	-25.45%	-19.02%	-6.43%
Max Drawdown (5Y) Largest decline over 5 years	-29.26%	-27.57%	-1.69%
Max Drawdown (10Y) Largest decline over 10 years	-39.27%	-39.37%	+0.10%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-8.03%	-7.86%	-0.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.47%	2.14%	+0.33%

Volatility

MDYG vs. VO - Volatility Comparison

SPDR S&P 400 Mid Cap Growth ETF (MDYG) has a higher volatility of 5.25% compared to Vanguard Mid-Cap ETF (VO) at 2.95%. This indicates that MDYG's price experiences larger fluctuations and is considered to be riskier than VO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MDYG	VO	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.25%	2.95%	+2.30%
Volatility (6M) Calculated over the trailing 6-month period	13.24%	9.23%	+4.01%
Volatility (1Y) Calculated over the trailing 1-year period	17.05%	12.33%	+4.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.62%	17.59%	+3.03%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.06%	18.95%	+2.11%

MDYG vs. VO - Expense Ratio Comparison

MDYG has a 0.15% expense ratio, which is higher than VO's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

MDYG vs. VO - Dividend Comparison

MDYG's dividend yield for the trailing twelve months is around 0.61%, less than VO's 1.35% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MDYG SPDR S&P 400 Mid Cap Growth ETF	0.61%	0.75%	0.87%	1.20%	1.16%	0.69%	0.71%	1.21%	1.36%	2.23%	1.25%	2.51%
VO Vanguard Mid-Cap ETF	1.35%	1.52%	1.49%	1.52%	1.60%	1.12%	1.45%	1.48%	1.82%	1.35%	1.45%	1.47%

Frequently Asked Questions

Can I hold both MDYG and VO in my portfolio?

MDYG and VO have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MDYG or VO?

MDYG has higher volatility (5.25%) compared to VO (2.95%). In terms of maximum drawdown, MDYG dropped -58.44% vs VO's -58.87%.

Which ETF is better, MDYG or VO?

On 10-year performance, VO leads with 11.60% vs 11.56% for MDYG. On fees, VO is cheaper at 0.03% per year. On volatility, VO has been the lower-risk option at 2.95%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MDYG or VO?

Over the 10-year period, VO has performed better with a 11.60% return vs 11.56%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MDYG or VO?

VO is cheaper with a 0.03% expense ratio, compared with 0.15% for MDYG.

Which ETF pays a higher dividend yield, MDYG or VO?

VO has the higher dividend yield at 1.35%, compared with 0.61% for MDYG.

What is the main difference between MDYG and VO?

MDYG is categorized as Mid Cap Growth Equities, while VO is Mid Cap Blend Equities. MDYG tracks S&P MidCap 400 Growth Index, while VO tracks CRSP US Mid Cap Index. They also come from different issuers: State Street and Vanguard. Their fees differ too: 0.15% for MDYG and 0.03% for VO.

Which has better risk-adjusted returns?

MDYG currently has the higher Sharpe Ratio (1.84 vs 1.62), 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.