CDSRX vs. SWSBX

Last updated Apr 1, 2026

Compare and contrast key facts about Calvert Short Duration Income Fund Class R6 (CDSRX) and Schwab Short-Term Bond Index Fund (SWSBX).

CDSRX is managed by Calvert Research and Management. It was launched on Feb 1, 2019. SWSBX is a passively managed fund by Charles Schwab that tracks the performance of the Bloomberg US Government/Credit 1-5 Year Index. It was launched on Feb 23, 2017.

Performance

CDSRX vs. SWSBX - Performance Comparison

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

CDSRX vs. SWSBX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
CDSRX Calvert Short Duration Income Fund Class R6	-0.31%	6.35%	5.74%	6.87%	-5.07%	1.20%	4.82%	4.87%
SWSBX Schwab Short-Term Bond Index Fund	-0.27%	6.06%	3.42%	3.95%	-5.89%	-1.28%	4.47%	4.42%

Returns By Period

In the year-to-date period, CDSRX achieves a -0.31% return, which is significantly lower than SWSBX's -0.27% return.

CDSRX

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

SWSBX

• 1D: 0.21%
• 1M: -1.23%
• YTD: -0.27%
• 6M: 0.88%
• 1Y: 3.63%
• 3Y*: 3.74%
• 5Y*: 1.25%
• 10Y*: —

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

CDSRX vs. SWSBX - Expense Ratio Comparison

CDSRX has a 0.45% expense ratio, which is higher than SWSBX's 0.06% expense ratio.

CDSRX

Calvert Short Duration Income Fund Class R6

SWSBX

Schwab Short-Term Bond Index Fund

Return for Risk

CDSRX vs. SWSBX — 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

SWSBX

SWSBX Risk / Return Rank: 90
SWSBX Sharpe Ratio Rank: 87
SWSBX Sortino Ratio Rank: 93
SWSBX Omega Ratio Rank: 87
SWSBX Calmar Ratio Rank: 92
SWSBX Martin Ratio Rank: 90

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. SWSBX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calvert Short Duration Income Fund Class R6 (CDSRX) and Schwab Short-Term Bond Index Fund (SWSBX). 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	SWSBX	Difference
Sharpe ratio Return per unit of total volatility	2.08	1.71	+0.37
Sortino ratio Return per unit of downside risk	3.64	2.83	+0.81
Omega ratio Gain probability vs. loss probability	1.46	1.36	+0.10
Calmar ratio Return relative to maximum drawdown	3.02	2.79	+0.24
Martin ratio Return relative to average drawdown	12.68	10.25	+2.42
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. SWSBX - Sharpe Ratio Comparison

The current CDSRX Sharpe Ratio is 2.08, which is comparable to the SWSBX Sharpe Ratio of 1.71. The chart below compares the historical Sharpe Ratios of CDSRX and SWSBX, 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	SWSBX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.08	1.71	+0.37
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.17	0.42	+0.74
Sharpe Ratio (All Time) Calculated using the full available price history	1.26	0.76	+0.50

Correlation

The correlation between CDSRX and SWSBX is 0.82, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

CDSRX vs. SWSBX - Dividend Comparison

CDSRX's dividend yield for the trailing twelve months is around 4.18%, more than SWSBX's 3.79% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
CDSRX Calvert Short Duration Income Fund Class R6	4.18%	4.55%	4.98%	3.52%	2.21%	2.56%	2.88%	2.75%	0.00%	0.00%
SWSBX Schwab Short-Term Bond Index Fund	3.79%	4.09%	3.66%	2.36%	1.11%	0.97%	1.82%	2.41%	2.12%	1.56%

Drawdowns

CDSRX vs. SWSBX - Drawdown Comparison

The maximum CDSRX drawdown since its inception was -9.96%, which is greater than SWSBX's maximum drawdown of -9.06%. Use the drawdown chart below to compare losses from any high point for CDSRX and SWSBX.

Drawdown Indicators

	CDSRX	SWSBX	Difference
Max Drawdown Largest peak-to-trough decline	-9.96%	-9.06%	-0.90%
Max Drawdown (1Y) Largest decline over 1 year	-1.56%	-1.54%	-0.02%
Max Drawdown (5Y) Largest decline over 5 years	-7.91%	-9.06%	+1.15%
Current Drawdown Current decline from peak	-1.31%	-1.23%	-0.08%
Average Drawdown Average peak-to-trough decline	-1.39%	-1.81%	+0.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.37%	0.42%	-0.05%

Volatility

CDSRX vs. SWSBX - Volatility Comparison

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

Volatility by Period

	CDSRX	SWSBX	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%	1.49%	-0.08%
Volatility (1Y) Calculated over the trailing 1-year period	2.19%	2.40%	-0.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.38%	2.95%	-0.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.66%	2.47%	+0.19%