MFBFX vs. LKFIX
MFBFX (MFS Corporate Bond Fund) and LKFIX (LKCM Fixed Income Fund) are both Corporate Bonds funds. Over the past 10 years, MFBFX returned 2.34%/yr vs 2.01%/yr for LKFIX. Their correlation of 0.81 suggests significant overlap in exposure. MFBFX charges 0.76%/yr vs 0.50%/yr for LKFIX.
Performance
MFBFX vs. LKFIX - Performance Comparison
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Returns By Period
Over the past 10 years, MFBFX has outperformed LKFIX with an annualized return of 2.34%, while LKFIX has yielded a comparatively lower 2.01% annualized return.
MFBFX
- 1D
- -0.32%
- 1M
- 0.69%
- YTD
- 0.37%
- 6M
- 0.76%
- 1Y
- 4.86%
- 3Y*
- 4.79%
- 5Y*
- -0.22%
- 10Y*
- 2.34%
LKFIX
- 1D
- -0.28%
- 1M
- 0.29%
- YTD
- -0.00%
- 6M
- 0.27%
- 1Y
- 3.26%
- 3Y*
- 4.44%
- 5Y*
- 1.59%
- 10Y*
- 2.01%
MFBFX vs. LKFIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MFBFX MFS Corporate Bond Fund | 0.37% | 7.35% | 2.03% | 8.09% | -17.27% | -1.47% | 11.01% | 14.43% | -3.19% | 6.08% |
LKFIX LKCM Fixed Income Fund | -0.00% | 6.66% | 3.06% | 4.98% | -5.63% | -1.54% | 4.29% | 6.71% | 0.26% | 2.15% |
Correlation
The correlation between MFBFX and LKFIX is 0.86, 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 | 0.86 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.87 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.83 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.81 |
Correlation (All Time) Calculated using the full available price history since Dec 30, 1997 | 0.81 |
The correlation between MFBFX and LKFIX has been stable across timeframes, ranging from 0.81 to 0.87 - a consistent structural relationship.
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Return for Risk
MFBFX vs. LKFIX — Risk / Return Rank
MFBFX
LKFIX
MFBFX vs. LKFIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Corporate Bond Fund (MFBFX) and LKCM Fixed Income Fund (LKFIX). 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.
| MFBFX | LKFIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.14 | ||
| Sortino ratioReturn per unit of downside risk | -0.24 | ||
| Omega ratioGain probability vs. loss probability | 1.22 | 1.25 | -0.03 |
| Calmar ratioReturn relative to maximum drawdown | 1.59 | 1.96 | -0.37 |
| Martin ratioReturn relative to average drawdown | 5.19 | 5.93 | -0.73 |
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Drawdowns
MFBFX vs. LKFIX - Drawdown Comparison
The maximum MFBFX drawdown since its inception was -29.78%, which is greater than LKFIX's maximum drawdown of -8.97%. Use the drawdown chart below to compare losses from any high point for MFBFX and LKFIX.
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Drawdown Indicators
| MFBFX | LKFIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -29.78% | -8.97% | -20.81% |
Max Drawdown (1Y)Largest decline over 1 year | -3.17% | -1.76% | -1.41% |
Max Drawdown (3Y)Largest decline over 3 years | -6.83% | -2.19% | -4.64% |
Max Drawdown (5Y)Largest decline over 5 years | -23.44% | -8.60% | -14.84% |
Max Drawdown (10Y)Largest decline over 10 years | -23.44% | -8.97% | -14.47% |
Current DrawdownCurrent decline from peak | -3.19% | -1.02% | -2.17% |
Average DrawdownAverage peak-to-trough decline | -6.19% | -1.12% | -5.07% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.97% | 0.58% | +0.39% |
Volatility
MFBFX vs. LKFIX - Volatility Comparison
MFS Corporate Bond Fund (MFBFX) has a higher volatility of 1.17% compared to LKCM Fixed Income Fund (LKFIX) at 0.79%. This indicates that MFBFX's price experiences larger fluctuations and is considered to be riskier than LKFIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MFBFX | LKFIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.17% | 0.79% | +0.38% |
Volatility (6M)Calculated over the trailing 6-month period | 3.09% | 1.94% | +1.15% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.10% | 2.54% | +1.56% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.40% | 2.99% | +3.41% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.74% | 2.64% | +3.10% |
MFBFX vs. LKFIX - Expense Ratio Comparison
MFBFX has a 0.76% expense ratio, which is higher than LKFIX's 0.50% expense ratio.
Dividends
MFBFX vs. LKFIX - Dividend Comparison
MFBFX's dividend yield for the trailing twelve months is around 4.54%, more than LKFIX's 3.70% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
LKFIX LKCM Fixed Income Fund | 3.70% | 3.57% | 3.03% | 2.28% | 1.57% | 1.36% | 1.74% | 2.27% | 2.26% | 2.04% | 2.18% | 2.78% |
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
MFBFX and LKFIX have a correlation of 0.86, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
MFBFX has higher volatility (1.17%) compared to LKFIX (0.79%). In terms of maximum drawdown, MFBFX dropped -29.78% vs LKFIX's -8.97%.
LKFIX currently has the higher Sharpe Ratio (1.37 vs 1.23), 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.
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