CDSRX vs. VSDM

Last updated Apr 1, 2026

Compare and contrast key facts about Calvert Short Duration Income Fund Class R6 (CDSRX) and Vanguard Short Duration Tax-Exempt Bond ETF (VSDM).

CDSRX is managed by Calvert Research and Management. It was launched on Feb 1, 2019. VSDM is an actively managed fund by Vanguard. It was launched on Nov 21, 2024.

Performance

CDSRX vs. VSDM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calvert Short Duration Income Fund Class R6 (CDSRX) and Vanguard Short Duration Tax-Exempt Bond ETF (VSDM). The values are adjusted to include any dividend payments, if applicable.

CDSRX vs. VSDM - Yearly Performance Comparison

	2026 (YTD)	2025	2024
CDSRX Calvert Short Duration Income Fund Class R6	-0.31%	6.35%	1.01%
VSDM Vanguard Short Duration Tax-Exempt Bond ETF	0.30%	5.39%	-0.15%

Returns By Period

In the year-to-date period, CDSRX achieves a -0.31% return, which is significantly lower than VSDM's 0.30% return.

CDSRX

• 1D: 0.19%
• 1M: -1.31%
• YTD: -0.31%
• 6M: 0.93%
• 1Y: 4.11%
• 3Y*: 5.43%
• 5Y*: 2.76%
• 10Y*: —

VSDM

• 1D: 0.09%
• 1M: -1.24%
• YTD: 0.30%
• 6M: 1.03%
• 1Y: 4.41%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CDSRX vs. VSDM - Expense Ratio Comparison

CDSRX has a 0.45% expense ratio, which is higher than VSDM's 0.12% expense ratio.

CDSRX

Calvert Short Duration Income Fund Class R6

VSDM

Vanguard Short Duration Tax-Exempt Bond ETF

Return for Risk

CDSRX vs. VSDM — Risk / Return Rank

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

CDSRX

CDSRX Risk / Return Rank: 94
CDSRX Sharpe Ratio Rank: 93
CDSRX Sortino Ratio Rank: 97
CDSRX Omega Ratio Rank: 93
CDSRX Calmar Ratio Rank: 94
CDSRX Martin Ratio Rank: 94

VSDM

VSDM Risk / Return Rank: 90
VSDM Sharpe Ratio Rank: 92
VSDM Sortino Ratio Rank: 92
VSDM Omega Ratio Rank: 97
VSDM Calmar Ratio Rank: 85
VSDM Martin Ratio Rank: 82

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.

CDSRX vs. VSDM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calvert Short Duration Income Fund Class R6 (CDSRX) and Vanguard Short Duration Tax-Exempt Bond ETF (VSDM). 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.

	CDSRX	VSDM	Difference
Sharpe ratio Return per unit of total volatility	2.08	2.13	-0.05
Sortino ratio Return per unit of downside risk	3.64	2.68	+0.96
Omega ratio Gain probability vs. loss probability	1.46	1.57	-0.11
Calmar ratio Return relative to maximum drawdown	3.02	2.49	+0.54
Martin ratio Return relative to average drawdown	12.68	8.93	+3.75
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CDSRX vs. VSDM - Sharpe Ratio Comparison

The current CDSRX Sharpe Ratio is 2.08, which is comparable to the VSDM Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of CDSRX and VSDM, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	CDSRX	VSDM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.08	2.13	-0.05
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.17	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.26	2.04	-0.78

Correlation

The correlation between CDSRX and VSDM is 0.48, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

CDSRX vs. VSDM - Dividend Comparison

CDSRX's dividend yield for the trailing twelve months is around 4.18%, more than VSDM's 3.05% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019
CDSRX Calvert Short Duration Income Fund Class R6	4.18%	4.55%	4.98%	3.52%	2.21%	2.56%	2.88%	2.75%
VSDM Vanguard Short Duration Tax-Exempt Bond ETF	3.05%	3.06%	0.35%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

CDSRX vs. VSDM - Drawdown Comparison

The maximum CDSRX drawdown since its inception was -9.96%, which is greater than VSDM's maximum drawdown of -1.81%. Use the drawdown chart below to compare losses from any high point for CDSRX and VSDM.

Drawdown Indicators

	CDSRX	VSDM	Difference
Max Drawdown Largest peak-to-trough decline	-9.96%	-1.81%	-8.15%
Max Drawdown (1Y) Largest decline over 1 year	-1.56%	-1.81%	+0.25%
Max Drawdown (5Y) Largest decline over 5 years	-7.91%	—	—
Current Drawdown Current decline from peak	-1.31%	-1.24%	-0.07%
Average Drawdown Average peak-to-trough decline	-1.39%	-0.27%	-1.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.37%	0.50%	-0.13%

Volatility

CDSRX vs. VSDM - Volatility Comparison

The current volatility for Calvert Short Duration Income Fund Class R6 (CDSRX) is 0.68%, while Vanguard Short Duration Tax-Exempt Bond ETF (VSDM) has a volatility of 0.73%. This indicates that CDSRX experiences smaller price fluctuations and is considered to be less risky than VSDM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CDSRX	VSDM	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.68%	0.73%	-0.05%
Volatility (6M) Calculated over the trailing 6-month period	1.41%	1.00%	+0.41%
Volatility (1Y) Calculated over the trailing 1-year period	2.19%	2.08%	+0.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.38%	2.02%	+0.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.66%	2.02%	+0.64%