MMID vs. CTEF

Last updated Jun 4, 2026

MMID (MFS Active Mid Cap ETF) and CTEF (Castellan Targeted Equity ETF) are both Mid Cap Blend Equities funds. Both are actively managed. A 0.54 correlation means they provide meaningful diversification when combined. MMID charges 0.59%/yr vs 0.45%/yr for CTEF.

Performance

MMID vs. CTEF - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Active Mid Cap ETF (MMID) and Castellan Targeted Equity ETF (CTEF). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MMID achieves a 2.28% return, which is significantly lower than CTEF's 29.35% return.

MMID

• 1D: -0.41%
• 1M: 0.95%
• YTD: 2.28%
• 6M: 2.54%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CTEF

• 1D: -0.41%
• 1M: 10.65%
• YTD: 29.35%
• 6M: 31.78%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MMID vs. CTEF - Yearly Performance Comparison

	2026 (YTD)	2025
MMID MFS Active Mid Cap ETF	2.28%	1.49%
CTEF Castellan Targeted Equity ETF	29.35%	4.03%

Correlation

The correlation between MMID and CTEF is 0.54, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Sep 25, 2025	0.54

Return for Risk

MMID vs. CTEF - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Active Mid Cap ETF (MMID) and Castellan Targeted Equity ETF (CTEF). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	MMID	CTEF	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	0.41	3.54	-3.13

Drawdowns

MMID vs. CTEF - Drawdown Comparison

The maximum MMID drawdown since its inception was -7.93%, smaller than the maximum CTEF drawdown of -15.00%. Use the drawdown chart below to compare losses from any high point for MMID and CTEF.

Drawdown Indicators

	MMID	CTEF	Difference
Max Drawdown Largest peak-to-trough decline	-7.93%	-15.00%	+7.07%
Current Drawdown Current decline from peak	-2.31%	-0.41%	-1.90%
Average Drawdown Average peak-to-trough decline	-2.14%	-1.80%	-0.34%

Volatility

Volatility by Period

	MMID	CTEF	Difference
Volatility (1Y) Calculated over the trailing 1-year period	13.57%	21.81%	-8.24%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.57%	21.81%	-8.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.57%	21.81%	-8.24%

MMID vs. CTEF - Expense Ratio Comparison

MMID has a 0.59% expense ratio, which is higher than CTEF's 0.45% expense ratio.

Dividends

MMID vs. CTEF - Dividend Comparison

MMID's dividend yield for the trailing twelve months is around 0.49%, more than CTEF's 0.06% yield.

Position	TTM	2025
CTEF Castellan Targeted Equity ETF	0.06%	0.08%
MMID MFS Active Mid Cap ETF	0.49%	0.28%

Frequently Asked Questions

Can I hold both MMID and CTEF in my portfolio?

MMID and CTEF have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MMID or CTEF?

On fees, CTEF is cheaper at 0.45% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MMID or CTEF?

CTEF is cheaper with a 0.45% expense ratio, compared with 0.59% for MMID.

Which ETF pays a higher dividend yield, MMID or CTEF?

MMID has the higher dividend yield at 0.49%, compared with 0.06% for CTEF.

What is the main difference between MMID and CTEF?

They also come from different issuers: MFS and Castellan. Their fees differ too: 0.59% for MMID and 0.45% for CTEF.