MSTDX vs. MCBDX
MSTDX (MassMutual Short Duration Bond Fund) and MCBDX (MassMutual Core Bond Fund) are both mutual funds - MSTDX is a Short-Term Bond fund managed by MassMutual, while MCBDX is a Intermediate Core Bond fund managed by MassMutual. Over the past 10 years, MSTDX returned 2.03%/yr vs 5.37%/yr for MCBDX. A 0.70 correlation means they provide meaningful diversification when combined. MSTDX charges 0.51%/yr vs 0.52%/yr for MCBDX.
Performance
MSTDX vs. MCBDX - Performance Comparison
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Returns By Period
In the year-to-date period, MSTDX achieves a 0.73% return, which is significantly lower than MCBDX's 1.18% return. Over the past 10 years, MSTDX has underperformed MCBDX with an annualized return of 2.03%, while MCBDX has yielded a comparatively higher 5.37% annualized return.
MSTDX
- 1D
- 0.11%
- 1M
- 0.22%
- YTD
- 0.73%
- 6M
- 1.24%
- 1Y
- 3.95%
- 3Y*
- 5.66%
- 5Y*
- 1.30%
- 10Y*
- 2.03%
MCBDX
- 1D
- 0.43%
- 1M
- 0.89%
- YTD
- 1.18%
- 6M
- 1.47%
- 1Y
- 5.82%
- 3Y*
- 4.90%
- 5Y*
- 6.70%
- 10Y*
- 5.37%
MSTDX vs. MCBDX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MSTDX MassMutual Short Duration Bond Fund | 0.73% | 6.18% | 6.38% | 5.88% | -11.19% | 1.79% | 2.29% | 4.49% | 1.68% | 2.61% |
MCBDX MassMutual Core Bond Fund | 1.18% | 8.03% | 1.13% | 6.64% | -15.29% | 38.26% | 8.42% | 9.62% | -0.48% | 4.60% |
Correlation
The correlation between MSTDX and MCBDX is 0.70, 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 | 0.70 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.69 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.57 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.51 |
Correlation (All Time) Calculated using the full available price history since Sep 30, 1994 | 0.70 |
The correlation between MSTDX and MCBDX shifts across timeframes, from 0.51 (10 years) to 0.70 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
MSTDX vs. MCBDX — Risk / Return Rank
MSTDX
MCBDX
MSTDX vs. MCBDX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MassMutual Short Duration Bond Fund (MSTDX) and MassMutual Core Bond Fund (MCBDX). 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.
| MSTDX | MCBDX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.70 | ||
| Sortino ratioReturn per unit of downside risk | +1.79 | ||
| Omega ratioGain probability vs. loss probability | 1.58 | 1.28 | +0.30 |
| Calmar ratioReturn relative to maximum drawdown | 3.84 | 2.04 | +1.80 |
| Martin ratioReturn relative to average drawdown | 15.84 | 6.62 | +9.23 |
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Drawdowns
MSTDX vs. MCBDX - Drawdown Comparison
The maximum MSTDX drawdown since its inception was -13.31%, smaller than the maximum MCBDX drawdown of -22.01%. Use the drawdown chart below to compare losses from any high point for MSTDX and MCBDX.
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Drawdown Indicators
| MSTDX | MCBDX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -13.31% | -22.01% | +8.70% |
Max Drawdown (1Y)Largest decline over 1 year | -1.06% | -2.87% | +1.81% |
Max Drawdown (3Y)Largest decline over 3 years | -1.06% | -5.34% | +4.28% |
Max Drawdown (5Y)Largest decline over 5 years | -13.31% | -22.01% | +8.70% |
Max Drawdown (10Y)Largest decline over 10 years | -13.31% | -22.01% | +8.70% |
Current DrawdownCurrent decline from peak | -0.21% | -3.84% | +3.63% |
Average DrawdownAverage peak-to-trough decline | -1.42% | -3.53% | +2.11% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.26% | 0.88% | -0.62% |
Volatility
MSTDX vs. MCBDX - Volatility Comparison
The current volatility for MassMutual Short Duration Bond Fund (MSTDX) is 0.63%, while MassMutual Core Bond Fund (MCBDX) has a volatility of 1.13%. This indicates that MSTDX experiences smaller price fluctuations and is considered to be less risky than MCBDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MSTDX | MCBDX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.63% | 1.13% | -0.50% |
Volatility (6M)Calculated over the trailing 6-month period | 1.41% | 2.86% | -1.45% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.83% | 3.84% | -2.01% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.34% | 20.11% | -17.77% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.06% | 14.45% | -12.39% |
MSTDX vs. MCBDX - Expense Ratio Comparison
MSTDX has a 0.51% expense ratio, which is lower than MCBDX's 0.52% expense ratio.
Dividends
MSTDX vs. MCBDX - Dividend Comparison
MSTDX's dividend yield for the trailing twelve months is around 4.44%, which matches MCBDX's 4.46% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MCBDX MassMutual Core Bond Fund | 4.46% | 4.50% | 1.93% | 4.62% | 3.83% | 31.12% | 5.98% | 3.35% | 3.32% | 2.96% | 3.29% | 1.43% |
MSTDX MassMutual Short Duration Bond Fund | 4.44% | 4.36% | 2.63% | 2.48% | 1.46% | 1.90% | 4.44% | 3.35% | 3.82% | 2.51% | 2.36% | 2.57% |
Frequently Asked Questions
MSTDX and MCBDX have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
MCBDX has higher volatility (1.13%) compared to MSTDX (0.63%). In terms of maximum drawdown, MSTDX dropped -13.31% vs MCBDX's -22.01%.
MSTDX currently has the higher Sharpe Ratio (2.22 vs 1.53), 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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