CSDAX vs. CULAX
CSDAX (Calvert Short Duration Income Fund) and CULAX (Calvert Ultra-Short Duration Income Fund) are both mutual funds - CSDAX is a Short-Term Bond fund managed by Calvert, while CULAX is a Ultrashort Bond fund managed by Calvert. Over the past 10 years, CSDAX returned 2.60%/yr vs 2.45%/yr for CULAX. Their 0.37 correlation means their historical movements had little consistent relationship. CSDAX charges 0.76%/yr vs 0.72%/yr for CULAX.
Performance
CSDAX vs. CULAX - Performance Comparison
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Returns By Period
In the year-to-date period, CSDAX achieves a 0.59% return, which is significantly lower than CULAX's 1.55% return. Over the past 10 years, CSDAX has outperformed CULAX with an annualized return of 2.60%, while CULAX has yielded a comparatively lower 2.45% annualized return.
CSDAX
- 1D
- 0.13%
- 1M
- -0.38%
- 6M
- 0.23%
- YTD
- 0.59%
- 1Y
- 2.70%
- 3Y*
- 4.93%
- 5Y*
- 2.41%
- 10Y*
- 2.60%
- ALL TIME*
- 3.37%
CULAX
- 1D
- 0.00%
- 1M
- -0.10%
- 6M
- 1.24%
- YTD
- 1.55%
- 1Y
- 3.48%
- 3Y*
- 4.84%
- 5Y*
- 3.41%
- 10Y*
- 2.45%
- ALL TIME*
- 2.41%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
CSDAX vs. CULAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
CSDAX Calvert Short Duration Income Fund | 0.59% | 6.22% | 5.00% | 6.58% | -5.36% | 0.88% | 4.52% | 6.21% | 0.05% | 2.17% |
CULAX Calvert Ultra-Short Duration Income Fund | 1.55% | 4.55% | 5.69% | 6.07% | -0.56% | 0.43% | 0.66% | 3.30% | 1.15% | 1.27% |
Correlation
The correlation between CSDAX and CULAX is 0.47, which is low. Their historical price movements had little consistent relationship.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.47 |
Correlation (3Y) Balances recent behavior with more history. | 0.53 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.56 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.47 |
Correlation (All Time) Calculated using the full available price history since Oct 31, 2006 | 0.37 |
The correlation between CSDAX and CULAX shifts across timeframes, from 0.37 (all time) to 0.56 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
CSDAX vs. CULAX — Risk / Return Rank
CSDAX
CULAX
CSDAX vs. CULAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Calvert Short Duration Income Fund (CSDAX) and Calvert Ultra-Short Duration Income Fund (CULAX). 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.
| CSDAX | CULAX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.43 | ||
| Sortino ratioReturn per unit of downside risk | -6.71 | ||
| Omega ratioGain probability vs. loss probability | 1.29 | 3.43 | -2.14 |
| Calmar ratioReturn relative to maximum drawdown | 1.84 | 11.56 | -9.72 |
| Martin ratioReturn relative to average drawdown | 6.64 | 48.54 | -41.90 |
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Drawdowns
CSDAX vs. CULAX - Drawdown Comparison
The maximum CSDAX drawdown since its inception was -9.96%, which is greater than CULAX's maximum drawdown of -7.40%. Use the drawdown chart below to compare losses from any high point for CSDAX and CULAX.
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Drawdown Indicators
| CSDAX | CULAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -9.96% | -7.40% | -2.56% |
Max Drawdown (1Y)Largest decline over 1 year | -1.51% | -0.30% | -1.21% |
Max Drawdown (3Y)Largest decline over 3 years | -1.51% | -0.30% | -1.21% |
Max Drawdown (5Y)Largest decline over 5 years | -8.14% | -2.19% | -5.95% |
Max Drawdown (10Y)Largest decline over 10 years | -9.96% | -7.40% | -2.56% |
Current DrawdownCurrent decline from peak | -0.38% | -0.10% | -0.28% |
Average DrawdownAverage peak-to-trough decline | -0.71% | -0.21% | -0.50% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.42% | 0.07% | +0.35% |
Volatility
CSDAX vs. CULAX - Volatility Comparison
Calvert Short Duration Income Fund (CSDAX) has a higher volatility of 0.46% compared to Calvert Ultra-Short Duration Income Fund (CULAX) at 0.18%. This indicates that CSDAX's price experiences larger fluctuations and is considered to be riskier than CULAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CSDAX | CULAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.46% | 0.18% | +0.28% |
Volatility (6M)Calculated over the trailing 6-month period | 1.58% | 0.82% | +0.76% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.96% | 1.23% | +0.73% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.41% | 1.36% | +1.05% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.32% | 1.42% | +0.90% |
CSDAX vs. CULAX - Expense Ratio Comparison
CSDAX has a 0.76% expense ratio, which is higher than CULAX's 0.72% expense ratio.
Dividends
CSDAX vs. CULAX - Dividend Comparison
CSDAX's dividend yield for the trailing twelve months is around 3.98%, more than CULAX's 3.52% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CSDAX Calvert Short Duration Income Fund | 3.98% | 4.42% | 4.28% | 3.24% | 1.95% | 2.25% | 2.58% | 2.79% | 2.67% | 1.84% | 2.07% | 1.84% |
CULAX Calvert Ultra-Short Duration Income Fund | 3.52% | 4.13% | 4.90% | 4.52% | 1.47% | 0.64% | 1.25% | 2.44% | 2.10% | 1.13% | 1.10% | 0.66% |
Frequently Asked Questions
CSDAX and CULAX have a correlation of 0.47, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
CSDAX has higher volatility (0.46%) compared to CULAX (0.18%). In terms of maximum drawdown, CSDAX dropped -9.96% vs CULAX's -7.40%.
CULAX currently has the higher Sharpe Ratio (2.85 vs 1.42), 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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