CDSRX vs. FTHRX

Last updated Jun 3, 2026

CDSRX (Calvert Short Duration Income Fund Class R6) and FTHRX (Fidelity Intermediate Bond Fund) are both mutual funds - CDSRX is a Short-Term Bond fund managed by Calvert Research and Management, while FTHRX is a Total Bond Market fund managed by Fidelity. Over the past 5 years, CDSRX returned 2.84%/yr vs 1.06%/yr for FTHRX. Their correlation of 0.83 suggests significant overlap in exposure. Both charge a 0.45% expense ratio.

Performance

CDSRX vs. FTHRX - Performance Comparison

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

Returns By Period

In the year-to-date period, CDSRX achieves a 0.82% return, which is significantly higher than FTHRX's 0.15% return.

CDSRX

• 1D: -0.06%
• 1M: 0.19%
• YTD: 0.82%
• 6M: 1.28%
• 1Y: 4.82%
• 3Y*: 5.80%
• 5Y*: 2.84%
• 10Y*: —

FTHRX

• 1D: -0.10%
• 1M: 0.02%
• YTD: 0.15%
• 6M: 0.31%
• 1Y: 4.03%
• 3Y*: 4.54%
• 5Y*: 1.06%
• 10Y*: 2.04%

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

CDSRX vs. FTHRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
CDSRX Calvert Short Duration Income Fund Class R6	0.82%	6.35%	5.74%	6.87%	-5.07%	1.20%	4.82%	4.87%
FTHRX Fidelity Intermediate Bond Fund	0.15%	6.89%	3.25%	5.55%	-9.17%	-1.60%	7.06%	6.17%

Correlation

The correlation between CDSRX and FTHRX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (All Time) Calculated using the full available price history since Feb 8, 2019	0.83

The correlation between CDSRX and FTHRX has been stable across timeframes, ranging from 0.83 to 0.92 - a consistent structural relationship.

Return for Risk

CDSRX vs. FTHRX — Risk / Return Rank

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

CDSRX

CDSRX Risk / Return Rank: 74
CDSRX Sharpe Ratio Rank: 60
CDSRX Sortino Ratio Rank: 88
CDSRX Omega Ratio Rank: 79
CDSRX Calmar Ratio Rank: 73
CDSRX Martin Ratio Rank: 70

FTHRX

FTHRX Risk / Return Rank: 25
FTHRX Sharpe Ratio Rank: 22
FTHRX Sortino Ratio Rank: 26
FTHRX Omega Ratio Rank: 23
FTHRX Calmar Ratio Rank: 29
FTHRX Martin Ratio Rank: 24

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. FTHRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calvert Short Duration Income Fund Class R6 (CDSRX) and Fidelity Intermediate Bond Fund (FTHRX). 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	FTHRX	Difference
Sharpe ratio Return per unit of total volatility	2.27	1.41	+0.86
Sortino ratio Return per unit of downside risk	4.22	2.20	+2.02
Omega ratio Gain probability vs. loss probability	1.52	1.26	+0.26
Calmar ratio Return relative to maximum drawdown	3.36	2.07	+1.29
Martin ratio Return relative to average drawdown	13.41	6.21	+7.20
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. FTHRX - Sharpe Ratio Comparison

The current CDSRX Sharpe Ratio is 2.27, which is higher than the FTHRX Sharpe Ratio of 1.41. The chart below compares the historical Sharpe Ratios of CDSRX and FTHRX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	CDSRX	FTHRX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.27	1.41	+0.86
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.18	0.26	+0.92
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.60	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.29	0.91	+0.38

Drawdowns

CDSRX vs. FTHRX - Drawdown Comparison

The maximum CDSRX drawdown since its inception was -9.96%, smaller than the maximum FTHRX drawdown of -19.01%. Use the drawdown chart below to compare losses from any high point for CDSRX and FTHRX.

Drawdown Indicators

	CDSRX	FTHRX	Difference
Max Drawdown Largest peak-to-trough decline	-9.96%	-19.01%	+9.05%
Max Drawdown (1Y) Largest decline over 1 year	-1.56%	-2.11%	+0.55%
Max Drawdown (3Y) Largest decline over 3 years	-1.56%	-2.68%	+1.12%
Max Drawdown (5Y) Largest decline over 5 years	-7.91%	-13.18%	+5.27%
Max Drawdown (10Y) Largest decline over 10 years	—	-13.25%	—
Current Drawdown Current decline from peak	-0.19%	-1.09%	+0.90%
Average Drawdown Average peak-to-trough decline	-1.37%	-3.07%	+1.70%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.39%	0.70%	-0.31%

Volatility

CDSRX vs. FTHRX - Volatility Comparison

The current volatility for Calvert Short Duration Income Fund Class R6 (CDSRX) is 0.67%, while Fidelity Intermediate Bond Fund (FTHRX) has a volatility of 0.91%. This indicates that CDSRX experiences smaller price fluctuations and is considered to be less risky than FTHRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CDSRX	FTHRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.67%	0.91%	-0.24%
Volatility (6M) Calculated over the trailing 6-month period	1.59%	2.03%	-0.44%
Volatility (1Y) Calculated over the trailing 1-year period	2.11%	2.81%	-0.70%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.42%	4.03%	-1.61%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.66%	3.40%	-0.74%

CDSRX vs. FTHRX - Expense Ratio Comparison

Both CDSRX and FTHRX have an expense ratio of 0.45%.

Dividends

CDSRX vs. FTHRX - Dividend Comparison

CDSRX's dividend yield for the trailing twelve months is around 4.67%, more than FTHRX's 3.69% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CDSRX Calvert Short Duration Income Fund Class R6	4.67%	4.55%	4.98%	3.52%	2.21%	2.56%	2.88%	2.75%	0.00%	0.00%	0.00%	0.00%
FTHRX Fidelity Intermediate Bond Fund	3.69%	3.59%	3.49%	2.94%	1.55%	1.53%	4.16%	2.49%	2.48%	2.20%	2.63%	2.13%

Frequently Asked Questions

Can I hold both CDSRX and FTHRX in my portfolio?

With a correlation of 0.92, CDSRX and FTHRX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, CDSRX or FTHRX?

FTHRX has higher volatility (0.91%) compared to CDSRX (0.67%). In terms of maximum drawdown, CDSRX dropped -9.96% vs FTHRX's -19.01%.

Which has better risk-adjusted returns?

CDSRX currently has the higher Sharpe Ratio (2.27 vs 1.41), 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.