LMLCX vs. MFBFX

Last updated Jun 5, 2026

LMLCX (Western Asset SMASh Series C Fund) and MFBFX (MFS Corporate Bond Fund) are both Corporate Bonds funds. Over the past 10 years, LMLCX returned 4.61%/yr vs 2.38%/yr for MFBFX. A 0.54 correlation means they provide meaningful diversification when combined. LMLCX charges 0.00%/yr vs 0.76%/yr for MFBFX.

Performance

LMLCX vs. MFBFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Western Asset SMASh Series C Fund (LMLCX) and MFS Corporate Bond Fund (MFBFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LMLCX achieves a 1.37% return, which is significantly higher than MFBFX's 0.45% return. Over the past 10 years, LMLCX has outperformed MFBFX with an annualized return of 4.61%, while MFBFX has yielded a comparatively lower 2.38% annualized return.

LMLCX

• 1D: -0.44%
• 1M: 0.84%
• YTD: 1.37%
• 6M: 1.43%
• 1Y: 9.54%
• 3Y*: 6.34%
• 5Y*: 4.46%
• 10Y*: 4.61%

MFBFX

• 1D: -0.24%
• 1M: 0.36%
• YTD: 0.45%
• 6M: 0.52%
• 1Y: 5.20%
• 3Y*: 4.85%
• 5Y*: -0.06%
• 10Y*: 2.38%

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

LMLCX vs. MFBFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
LMLCX Western Asset SMASh Series C Fund	1.37%	12.22%	-2.21%	12.93%	-3.51%	3.08%	2.93%	15.10%	-4.24%	7.20%
MFBFX MFS Corporate Bond Fund	0.45%	7.35%	2.03%	8.09%	-17.27%	-1.47%	11.01%	14.43%	-3.19%	6.08%

Correlation

The correlation between LMLCX and MFBFX is 0.93, 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	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.78
Correlation (10Y) Calculated over the trailing 10-year period	0.59
Correlation (All Time) Calculated using the full available price history since May 24, 2012	0.54

Over the past year, LMLCX and MFBFX have become more correlated (0.93) than their long-term average of 0.54, meaning their price movements have been converging.

Return for Risk

LMLCX vs. MFBFX — Risk / Return Rank

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

LMLCX

LMLCX Risk / Return Rank: 38
LMLCX Sharpe Ratio Rank: 32
LMLCX Sortino Ratio Rank: 34
LMLCX Omega Ratio Rank: 32
LMLCX Calmar Ratio Rank: 47
LMLCX Martin Ratio Rank: 43

MFBFX

MFBFX Risk / Return Rank: 26
MFBFX Sharpe Ratio Rank: 26
MFBFX Sortino Ratio Rank: 26
MFBFX Omega Ratio Rank: 25
MFBFX Calmar Ratio Rank: 26
MFBFX Martin Ratio Rank: 27

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.

LMLCX vs. MFBFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Western Asset SMASh Series C Fund (LMLCX) and MFS Corporate Bond Fund (MFBFX). 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.

	LMLCX	MFBFX	Difference
Sharpe ratio: Return per unit of total volatility	1.57	1.43	+0.14
Sortino ratio: Return per unit of downside risk	2.35	2.12	+0.23
Omega ratio: Gain probability vs. loss probability	1.29	1.26	+0.03
Calmar ratio: Return relative to maximum drawdown	2.57	1.87	+0.70
Martin ratio: Return relative to average drawdown	8.79	6.25	+2.54
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

LMLCX vs. MFBFX - Sharpe Ratio Comparison

The current LMLCX Sharpe Ratio is 1.57, which is comparable to the MFBFX Sharpe Ratio of 1.43. The chart below compares the historical Sharpe Ratios of LMLCX and MFBFX, 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

	LMLCX	MFBFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.57	1.43	+0.14
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.58	-0.01	+0.59
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.64	0.42	+0.23
Sharpe Ratio (All Time) Calculated using the full available price history	0.78	0.48	+0.30

Drawdowns

LMLCX vs. MFBFX - Drawdown Comparison

The maximum LMLCX drawdown since its inception was -23.45%, smaller than the maximum MFBFX drawdown of -29.78%. Use the drawdown chart below to compare losses from any high point for LMLCX and MFBFX.

Drawdown Indicators

	LMLCX	MFBFX	Difference
Max Drawdown Largest peak-to-trough decline	-23.45%	-29.78%	+6.33%
Max Drawdown (1Y) Largest decline over 1 year	-4.22%	-3.17%	-1.05%
Max Drawdown (3Y) Largest decline over 3 years	-11.77%	-6.83%	-4.94%
Max Drawdown (5Y) Largest decline over 5 years	-11.77%	-23.44%	+11.67%
Max Drawdown (10Y) Largest decline over 10 years	-23.45%	-23.44%	-0.01%
Current Drawdown Current decline from peak	-0.44%	-3.11%	+2.67%
Average Drawdown Average peak-to-trough decline	-1.94%	-6.19%	+4.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.23%	0.94%	+0.29%

Volatility

LMLCX vs. MFBFX - Volatility Comparison

Western Asset SMASh Series C Fund (LMLCX) has a higher volatility of 2.03% compared to MFS Corporate Bond Fund (MFBFX) at 1.40%. This indicates that LMLCX's price experiences larger fluctuations and is considered to be riskier than MFBFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LMLCX	MFBFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.03%	1.40%	+0.63%
Volatility (6M) Calculated over the trailing 6-month period	4.46%	3.01%	+1.45%
Volatility (1Y) Calculated over the trailing 1-year period	6.91%	4.13%	+2.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.79%	6.40%	+1.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.19%	5.73%	+1.46%

LMLCX vs. MFBFX - Expense Ratio Comparison

LMLCX has a 0.00% expense ratio, which is lower than MFBFX's 0.76% expense ratio.

Dividends

LMLCX vs. MFBFX - Dividend Comparison

LMLCX's dividend yield for the trailing twelve months is around 6.21%, more than MFBFX's 4.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LMLCX Western Asset SMASh Series C Fund	6.21%	6.11%	6.58%	5.78%	4.46%	5.42%	3.54%	4.16%	5.59%	4.04%	3.75%	5.64%
MFBFX MFS Corporate Bond Fund	4.54%	4.54%	3.74%	3.16%	2.46%	5.61%	3.47%	3.01%	3.15%	3.07%	3.27%	4.16%

Frequently Asked Questions

Can I hold both LMLCX and MFBFX in my portfolio?

With a correlation of 0.93, LMLCX and MFBFX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, LMLCX or MFBFX?

LMLCX has higher volatility (2.03%) compared to MFBFX (1.40%). In terms of maximum drawdown, LMLCX dropped -23.45% vs MFBFX's -29.78%.

Which has better risk-adjusted returns?

LMLCX currently has the higher Sharpe Ratio (1.57 vs 1.43), 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.