LTMFX vs. THIMX

Last updated Jun 23, 2026

LTMFX (Thornburg Limited Term Municipal Fund) and THIMX (Thornburg Intermediate Municipal Fund) are both Municipal Bonds funds from Thornburg. Over the past 10 years, LTMFX returned 1.43%/yr vs 1.96%/yr for THIMX. Their correlation of 0.83 suggests significant overlap in exposure. LTMFX charges 0.71%/yr vs 0.77%/yr for THIMX.

Performance

LTMFX vs. THIMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Thornburg Limited Term Municipal Fund (LTMFX) and Thornburg Intermediate Municipal Fund (THIMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LTMFX achieves a 0.89% return, which is significantly lower than THIMX's 1.84% return. Over the past 10 years, LTMFX has underperformed THIMX with an annualized return of 1.43%, while THIMX has yielded a comparatively higher 1.96% annualized return.

LTMFX

• 1D: 0.00%
• 1M: 0.86%
• YTD: 0.89%
• 6M: 1.16%
• 1Y: 4.12%
• 3Y*: 3.78%
• 5Y*: 1.31%
• 10Y*: 1.43%

THIMX

• 1D: 0.08%
• 1M: 1.45%
• YTD: 1.84%
• 6M: 2.15%
• 1Y: 6.34%
• 3Y*: 4.51%
• 5Y*: 1.64%
• 10Y*: 1.96%

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

LTMFX vs. THIMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LTMFX Thornburg Limited Term Municipal Fund	0.89%	5.74%	1.84%	3.83%	-5.27%	-0.18%	2.97%	3.81%	1.00%	2.29%
THIMX Thornburg Intermediate Municipal Fund	1.84%	5.97%	2.45%	4.88%	-6.63%	1.00%	3.81%	5.86%	0.70%	3.61%

Correlation

The correlation between LTMFX and THIMX is 0.75, 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	0.75
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.84
Correlation (All Time) Calculated using the full available price history since Jan 2, 1992	0.83

The correlation between LTMFX and THIMX shifts across timeframes, from 0.75 (1 year) to 0.85 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

LTMFX vs. THIMX — Risk / Return Rank

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

LTMFX

LTMFX Risk / Return Rank: 68
LTMFX Sharpe Ratio Rank: 86
LTMFX Sortino Ratio Rank: 93
LTMFX Omega Ratio Rank: 96
LTMFX Calmar Ratio Rank: 34
LTMFX Martin Ratio Rank: 30

THIMX

THIMX Risk / Return Rank: 77
THIMX Sharpe Ratio Rank: 92
THIMX Sortino Ratio Rank: 95
THIMX Omega Ratio Rank: 96
THIMX Calmar Ratio Rank: 53
THIMX Martin Ratio Rank: 48

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.

LTMFX vs. THIMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Thornburg Limited Term Municipal Fund (LTMFX) and Thornburg Intermediate Municipal Fund (THIMX). 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.

	LTMFX	THIMX	Difference
Sharpe ratio: Return per unit of total volatility	2.60	2.86	-0.26
Sortino ratio: Return per unit of downside risk	4.37	4.82	-0.45
Omega ratio: Gain probability vs. loss probability	1.81	1.80	+0.01
Calmar ratio: Return relative to maximum drawdown	2.11	2.67	-0.56
Martin ratio: Return relative to average drawdown	6.40	9.53	-3.13

LTMFX vs. THIMX - Sharpe Ratio Comparison

The current LTMFX Sharpe Ratio is 2.60, which is comparable to the THIMX Sharpe Ratio of 2.86. The chart below compares the historical Sharpe Ratios of LTMFX and THIMX, 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

LTMFX vs. THIMX - Drawdown Comparison

The maximum LTMFX drawdown since its inception was -8.40%, smaller than the maximum THIMX drawdown of -10.22%. Use the drawdown chart below to compare losses from any high point for LTMFX and THIMX.

Drawdown Indicators

	LTMFX	THIMX	Difference
Max Drawdown Largest peak-to-trough decline	-8.40%	-10.22%	+1.82%
Max Drawdown (1Y) Largest decline over 1 year	-1.96%	-2.39%	+0.43%
Max Drawdown (3Y) Largest decline over 3 years	-2.95%	-4.32%	+1.37%
Max Drawdown (5Y) Largest decline over 5 years	-8.40%	-10.22%	+1.82%
Max Drawdown (10Y) Largest decline over 10 years	-8.40%	-10.22%	+1.82%
Current Drawdown Current decline from peak	-0.74%	-0.06%	-0.68%
Average Drawdown Average peak-to-trough decline	-1.63%	-1.33%	-0.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.64%	0.67%	-0.03%

Volatility

LTMFX vs. THIMX - Volatility Comparison

The current volatility for Thornburg Limited Term Municipal Fund (LTMFX) is 0.48%, while Thornburg Intermediate Municipal Fund (THIMX) has a volatility of 0.60%. This indicates that LTMFX experiences smaller price fluctuations and is considered to be less risky than THIMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LTMFX	THIMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.48%	0.60%	-0.12%
Volatility (6M) Calculated over the trailing 6-month period	1.29%	1.66%	-0.37%
Volatility (1Y) Calculated over the trailing 1-year period	1.59%	2.22%	-0.63%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.35%	3.24%	-0.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.27%	3.28%	-1.01%

LTMFX vs. THIMX - Expense Ratio Comparison

LTMFX has a 0.71% expense ratio, which is lower than THIMX's 0.77% expense ratio.

Dividends

LTMFX vs. THIMX - Dividend Comparison

LTMFX's dividend yield for the trailing twelve months is around 3.22%, less than THIMX's 3.67% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LTMFX Thornburg Limited Term Municipal Fund	3.22%	4.28%	3.60%	2.11%	1.62%	1.27%	1.54%	1.78%	1.83%	1.64%	1.57%	1.56%
THIMX Thornburg Intermediate Municipal Fund	3.67%	4.82%	4.03%	2.60%	2.40%	2.25%	2.39%	2.62%	2.48%	2.18%	2.04%	2.08%

Frequently Asked Questions

Can I hold both LTMFX and THIMX in my portfolio?

LTMFX and THIMX have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LTMFX or THIMX?

THIMX has higher volatility (0.60%) compared to LTMFX (0.48%). In terms of maximum drawdown, LTMFX dropped -8.40% vs THIMX's -10.22%.

Which has better risk-adjusted returns?

THIMX currently has the higher Sharpe Ratio (2.86 vs 2.60), 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.