MIEIX vs. AITFX

Last updated Jun 5, 2026

MIEIX (MFS International Equity Fund Class R6) and AITFX (Invesco Limited Term Municipal Income Fund) are both mutual funds - MIEIX is a Foreign Large Cap Equities fund managed by MFS, while AITFX is a Municipal Bonds fund managed by Invesco. Over the past 10 years, MIEIX returned 9.75%/yr vs 2.14%/yr for AITFX. At a correlation of -0.05, they often move in opposite directions. MIEIX charges 0.68%/yr vs 0.33%/yr for AITFX.

Performance

MIEIX vs. AITFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS International Equity Fund Class R6 (MIEIX) and Invesco Limited Term Municipal Income Fund (AITFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MIEIX achieves a 2.51% return, which is significantly higher than AITFX's 1.43% return. Over the past 10 years, MIEIX has outperformed AITFX with an annualized return of 9.75%, while AITFX has yielded a comparatively lower 2.14% annualized return.

MIEIX

• 1D: -0.72%
• 1M: 2.46%
• YTD: 2.51%
• 6M: 4.53%
• 1Y: 8.73%
• 3Y*: 11.81%
• 5Y*: 6.93%
• 10Y*: 9.75%

AITFX

• 1D: 0.09%
• 1M: 0.49%
• YTD: 1.43%
• 6M: 1.83%
• 1Y: 5.24%
• 3Y*: 4.05%
• 5Y*: 2.13%
• 10Y*: 2.14%

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

MIEIX vs. AITFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MIEIX MFS International Equity Fund Class R6	2.51%	23.22%	4.13%	19.06%	-14.82%	15.13%	11.11%	28.42%	-10.66%	28.01%
AITFX Invesco Limited Term Municipal Income Fund	1.43%	5.47%	2.88%	3.67%	-2.62%	0.57%	3.73%	4.35%	1.13%	2.69%

Correlation

The correlation between MIEIX and AITFX is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.27
Correlation (3Y) Calculated over the trailing 3-year period	0.20
Correlation (5Y) Calculated over the trailing 5-year period	0.19
Correlation (10Y) Calculated over the trailing 10-year period	0.08
Correlation (All Time) Calculated using the full available price history since Jan 31, 1996	-0.05

The correlation between MIEIX and AITFX shifts across timeframes, from -0.05 (all time) to 0.27 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

MIEIX vs. AITFX — Risk / Return Rank

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

MIEIX

MIEIX Risk / Return Rank: 9
MIEIX Sharpe Ratio Rank: 9
MIEIX Sortino Ratio Rank: 9
MIEIX Omega Ratio Rank: 9
MIEIX Calmar Ratio Rank: 9
MIEIX Martin Ratio Rank: 10

AITFX

AITFX Risk / Return Rank: 84
AITFX Sharpe Ratio Rank: 93
AITFX Sortino Ratio Rank: 98
AITFX Omega Ratio Rank: 98
AITFX Calmar Ratio Rank: 71
AITFX Martin Ratio Rank: 63

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.

MIEIX vs. AITFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS International Equity Fund Class R6 (MIEIX) and Invesco Limited Term Municipal Income Fund (AITFX). 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.

	MIEIX	AITFX	Difference
Sharpe ratio: Return per unit of total volatility	0.73	3.22	-2.49
Sortino ratio: Return per unit of downside risk	1.10	6.09	-4.99
Omega ratio: Gain probability vs. loss probability	1.14	2.08	-0.94
Calmar ratio: Return relative to maximum drawdown	0.85	3.26	-2.41
Martin ratio: Return relative to average drawdown	2.98	12.36	-9.38
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MIEIX vs. AITFX - Sharpe Ratio Comparison

The current MIEIX Sharpe Ratio is 0.73, which is lower than the AITFX Sharpe Ratio of 3.22. The chart below compares the historical Sharpe Ratios of MIEIX and AITFX, 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

	MIEIX	AITFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.73	3.22	-2.49
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.45	1.03	-0.57
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.61	0.98	-0.37
Sharpe Ratio (All Time) Calculated using the full available price history	0.46	1.83	-1.37

Drawdowns

MIEIX vs. AITFX - Drawdown Comparison

The maximum MIEIX drawdown since its inception was -53.13%, which is greater than AITFX's maximum drawdown of -7.17%. Use the drawdown chart below to compare losses from any high point for MIEIX and AITFX.

Drawdown Indicators

	MIEIX	AITFX	Difference
Max Drawdown Largest peak-to-trough decline	-53.13%	-7.17%	-45.96%
Max Drawdown (1Y) Largest decline over 1 year	-11.26%	-1.62%	-9.64%
Max Drawdown (3Y) Largest decline over 3 years	-13.43%	-2.63%	-10.80%
Max Drawdown (5Y) Largest decline over 5 years	-28.07%	-5.62%	-22.45%
Max Drawdown (10Y) Largest decline over 10 years	-31.35%	-7.17%	-24.18%
Current Drawdown Current decline from peak	-2.19%	-0.09%	-2.10%
Average Drawdown Average peak-to-trough decline	-8.98%	-0.73%	-8.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.20%	0.43%	+2.77%

Volatility

MIEIX vs. AITFX - Volatility Comparison

MFS International Equity Fund Class R6 (MIEIX) has a higher volatility of 3.40% compared to Invesco Limited Term Municipal Income Fund (AITFX) at 0.62%. This indicates that MIEIX's price experiences larger fluctuations and is considered to be riskier than AITFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MIEIX	AITFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.40%	0.62%	+2.78%
Volatility (6M) Calculated over the trailing 6-month period	10.23%	1.31%	+8.92%
Volatility (1Y) Calculated over the trailing 1-year period	13.15%	1.64%	+11.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.34%	2.09%	+13.25%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.94%	2.19%	+13.75%

MIEIX vs. AITFX - Expense Ratio Comparison

MIEIX has a 0.68% expense ratio, which is higher than AITFX's 0.33% expense ratio.

Dividends

MIEIX vs. AITFX - Dividend Comparison

MIEIX's dividend yield for the trailing twelve months is around 2.61%, less than AITFX's 3.63% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AITFX Invesco Limited Term Municipal Income Fund	3.63%	4.82%	3.93%	2.67%	1.80%	1.44%	2.07%	2.48%	2.28%	1.95%	1.93%	2.51%
MIEIX MFS International Equity Fund Class R6	2.61%	2.68%	1.47%	1.67%	1.26%	5.40%	1.00%	3.12%	1.63%	1.85%	1.78%	1.71%

Frequently Asked Questions

Can I hold both MIEIX and AITFX in my portfolio?

MIEIX and AITFX have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MIEIX or AITFX?

MIEIX has higher volatility (3.40%) compared to AITFX (0.62%). In terms of maximum drawdown, MIEIX dropped -53.13% vs AITFX's -7.17%.

Which has better risk-adjusted returns?

AITFX currently has the higher Sharpe Ratio (3.22 vs 0.73), 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.