FFOX vs. MDYG

Last updated Aug 4, 2026

FFOX (FundX Future Fund Opportunities ETF) and MDYG (SPDR S&P 400 Mid Cap Growth ETF) are both Mid Cap Growth Equities funds. FFOX is actively managed, while MDYG is passively managed. Over the past year, FFOX returned 17.46% vs 24.47% for MDYG. Their correlation of 0.88 means they have usually moved in the same direction. FFOX charges 1.02%/yr vs 0.15%/yr for MDYG.

Performance

FFOX vs. MDYG - Performance Comparison

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

Returns By Period

In the year-to-date period, FFOX achieves a 8.87% return, which is significantly lower than MDYG's 17.38% return.

FFOX

• 1D: 2.27%
• 1M: -2.02%
• 6M: 5.10%
• YTD: 8.87%
• 1Y: 17.46%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 17.29%

MDYG

• 1D: 1.31%
• 1M: -1.52%
• 6M: 11.72%
• YTD: 17.38%
• 1Y: 24.47%
• 3Y*: 14.89%
• 5Y*: 7.82%
• 10Y*: 10.92%
• ALL TIME*: 10.34%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
FFOX FundX Future Fund Opportunities ETF	$395.01K	$437.64K	$512.79K
MDYG SPDR S&P 400 Mid Cap Growth ETF	$10.90M	$8.88M	$9.24M

FFOX vs. MDYG - Yearly Performance Comparison

	2026 (YTD)	2025
FFOX FundX Future Fund Opportunities ETF	8.87%	10.29%
MDYG SPDR S&P 400 Mid Cap Growth ETF	17.38%	8.31%

Correlation

The correlation between FFOX and MDYG is 0.88, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.88
Correlation (All Time) Calculated using the full available price history since Jun 10, 2025	0.88

The correlation between FFOX and MDYG has been stable across timeframes, ranging from 0.88 to 0.88 - a consistent structural relationship.

FFOX vs. MDYG - Sectors Allocation Comparison

Sectors	FFOX	MDYG
Industrials	25.6%	30.6%
Technology	22.0%	23.9%
Healthcare	20.8%	13.6%
Consumer Cyclical	12.1%	7.3%
Financial Services	7.5%	6.7%
Consumer Defensive	5.0%	1.6%
Basic Materials	3.6%	4.1%
Communication Services	2.1%	2.2%
Energy	1.3%	3.0%
Real Estate	-	5.2%
Utilities	-	1.8%

Return for Risk

FFOX vs. MDYG — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

FFOX

FFOX Risk / Return Rank: 37
FFOX Sharpe Ratio Rank: 36
FFOX Sortino Ratio Rank: 37
FFOX Omega Ratio Rank: 34
FFOX Calmar Ratio Rank: 37
FFOX Martin Ratio Rank: 42

MDYG

MDYG Risk / Return Rank: 61
MDYG Sharpe Ratio Rank: 56
MDYG Sortino Ratio Rank: 57
MDYG Omega Ratio Rank: 52
MDYG Calmar Ratio Rank: 69
MDYG Martin Ratio Rank: 71

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

FFOX vs. MDYG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FundX Future Fund Opportunities ETF (FFOX) and SPDR S&P 400 Mid Cap Growth ETF (MDYG). 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.

	FFOX	MDYG	Difference
Sharpe ratio: Return per unit of total volatility	0.98	1.38	-0.40
Sortino ratio: Return per unit of downside risk	1.51	2.03	-0.52
Omega ratio: Gain probability vs. loss probability	1.17	1.24	-0.07
Calmar ratio: Return relative to maximum drawdown	1.41	2.48	-1.07
Martin ratio: Return relative to average drawdown	5.01	9.12	-4.11

FFOX vs. MDYG - Sharpe Ratio Comparison

The current FFOX Sharpe Ratio is 0.98, which is comparable to the MDYG Sharpe Ratio of 1.38. The chart below compares the historical Sharpe Ratios of FFOX and MDYG, 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

FFOX vs. MDYG - Drawdown Comparison

The maximum FFOX drawdown since its inception was -12.41%, smaller than the maximum MDYG drawdown of -58.44%. Use the drawdown chart below to compare losses from any high point for FFOX and MDYG.

Drawdown Indicators

	FFOX	MDYG	Difference
Max Drawdown Largest peak-to-trough decline	-12.41%	-58.44%	+46.03%
Max Drawdown (1Y) Largest decline over 1 year	-12.41%	-9.91%	-2.50%
Max Drawdown (3Y) Largest decline over 3 years	—	-25.45%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-29.26%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-39.27%	—
Current Drawdown Current decline from peak	-2.85%	-3.47%	+0.62%
Average Drawdown Average peak-to-trough decline	-2.31%	-7.98%	+5.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.49%	2.69%	+0.80%

Volatility

FFOX vs. MDYG - Volatility Comparison

FundX Future Fund Opportunities ETF (FFOX) and SPDR S&P 400 Mid Cap Growth ETF (MDYG) have volatilities of 4.88% and 4.71%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FFOX	MDYG	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.88%	4.71%	+0.17%
Volatility (6M) Calculated over the trailing 6-month period	14.10%	14.08%	+0.02%
Volatility (1Y) Calculated over the trailing 1-year period	18.00%	17.84%	+0.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.36%	20.73%	-3.37%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.36%	21.08%	-3.72%

FFOX vs. MDYG - Expense Ratio Comparison

FFOX has a 1.02% expense ratio, which is higher than MDYG's 0.15% expense ratio.

Dividends

FFOX vs. MDYG - Dividend Comparison

FFOX's dividend yield for the trailing twelve months is around 1.67%, more than MDYG's 0.59% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FFOX FundX Future Fund Opportunities ETF	1.67%	1.81%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
MDYG SPDR S&P 400 Mid Cap Growth ETF	0.59%	0.75%	0.87%	1.20%	1.16%	0.69%	0.71%	1.21%	1.36%	2.23%	1.25%	2.51%

Frequently Asked Questions

Can I hold both FFOX and MDYG in my portfolio?

FFOX and MDYG have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FFOX or MDYG?

FFOX has higher volatility (4.88%) compared to MDYG (4.71%). In terms of maximum drawdown, FFOX dropped -12.41% vs MDYG's -58.44%.

Which ETF is better, FFOX or MDYG?

On 1-year performance, MDYG leads with 24.47% vs 17.46% for FFOX. On fees, MDYG is cheaper at 0.15% per year. On volatility, MDYG has been the lower-risk option at 4.71%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FFOX or MDYG?

Over the 1-year period, MDYG has performed better with a 24.47% return vs 17.46%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FFOX or MDYG?

MDYG is cheaper with a 0.15% expense ratio, compared with 1.02% for FFOX.

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

FFOX has the higher dividend yield at 1.67%, compared with 0.59% for MDYG.

What is the main difference between FFOX and MDYG?

They also come from different issuers: FundX and State Street. Their fees differ too: 1.02% for FFOX and 0.15% for MDYG.

Which has better risk-adjusted returns?

MDYG currently has the higher Sharpe Ratio (1.38 vs 0.98), 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.