CSXRX vs. CULAX

Last updated Aug 1, 2026

CSXRX (Calvert US Large Cap Core Responsible Index Fund Class R6) and CULAX (Calvert Ultra-Short Duration Income Fund) are both mutual funds - CSXRX is a Large Cap Blend Equities fund tracking the Calvert US Large-Cap Core Responsible Index, while CULAX is a Ultrashort Bond fund managed by Calvert. Over the past 5 years, CSXRX returned 11.50%/yr vs 3.41%/yr for CULAX. Their 0.13 correlation means their historical movements had little consistent relationship. CSXRX charges 0.19%/yr vs 0.72%/yr for CULAX.

Performance

CSXRX vs. CULAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calvert US Large Cap Core Responsible Index Fund Class R6 (CSXRX) and Calvert Ultra-Short Duration Income Fund (CULAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CSXRX achieves a 11.30% return, which is significantly higher than CULAX's 1.55% return.

CSXRX

• 1D: 1.90%
• 1M: -0.65%
• 6M: 10.08%
• YTD: 11.30%
• 1Y: 22.74%
• 3Y*: 18.93%
• 5Y*: 11.50%
• 10Y*: —
• ALL TIME*: 14.86%

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%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
CSXRX Calvert US Large Cap Core Responsible Index Fund Class R6	$0.00	$0.00	$0.00
CULAX Calvert Ultra-Short Duration Income Fund	$0.00	$0.00	$0.00

CSXRX vs. CULAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSXRX Calvert US Large Cap Core Responsible Index Fund Class R6	11.30%	15.96%	24.19%	27.32%	-21.64%	25.71%	26.19%	32.83%	-4.07%	4.39%
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%	0.05%

Correlation

The correlation between CSXRX and CULAX is 0.10, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.10
Correlation (3Y) Balances recent behavior with more history.	0.10
Correlation (5Y) Shows whether the relationship held over a longer period.	0.15
Correlation (All Time) Calculated using the full available price history since Oct 18, 2017	0.13

Return for Risk

CSXRX vs. CULAX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

CSXRX

CSXRX Risk / Return Rank: 56
CSXRX Sharpe Ratio Rank: 54
CSXRX Sortino Ratio Rank: 53
CSXRX Omega Ratio Rank: 49
CSXRX Calmar Ratio Rank: 55
CSXRX Martin Ratio Rank: 71

CULAX

CULAX Risk / Return Rank: 99
CULAX Sharpe Ratio Rank: 98
CULAX Sortino Ratio Rank: 99
CULAX Omega Ratio Rank: 99
CULAX Calmar Ratio Rank: 99
CULAX Martin Ratio Rank: 99

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

CSXRX vs. CULAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calvert US Large Cap Core Responsible Index Fund Class R6 (CSXRX) 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.

	CSXRX	CULAX	Difference
Sharpe ratio: Return per unit of total volatility	1.48	3.11	-1.63
Sortino ratio: Return per unit of downside risk	2.09	10.31	-8.22
Omega ratio: Gain probability vs. loss probability	1.26	3.75	-2.49
Calmar ratio: Return relative to maximum drawdown	2.06	13.12	-11.06
Martin ratio: Return relative to average drawdown	9.08	55.54	-46.46

CSXRX vs. CULAX - Sharpe Ratio Comparison

The current CSXRX Sharpe Ratio is 1.48, which is lower than the CULAX Sharpe Ratio of 3.11. The chart below compares the historical Sharpe Ratios of CSXRX and CULAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

CSXRX vs. CULAX - Drawdown Comparison

The maximum CSXRX drawdown since its inception was -32.82%, which is greater than CULAX's maximum drawdown of -7.40%. Use the drawdown chart below to compare losses from any high point for CSXRX and CULAX.

Drawdown Indicators

	CSXRX	CULAX	Difference
Max Drawdown Largest peak-to-trough decline	-32.82%	-7.40%	-25.42%
Max Drawdown (1Y) Largest decline over 1 year	-9.72%	-0.30%	-9.42%
Max Drawdown (3Y) Largest decline over 3 years	-19.93%	-0.30%	-19.63%
Max Drawdown (5Y) Largest decline over 5 years	-27.34%	-2.19%	-25.15%
Max Drawdown (10Y) Largest decline over 10 years	—	-7.40%	—
Current Drawdown Current decline from peak	-1.61%	-0.10%	-1.51%
Average Drawdown Average peak-to-trough decline	-5.55%	-0.21%	-5.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.20%	0.07%	+2.13%

Volatility

CSXRX vs. CULAX - Volatility Comparison

Calvert US Large Cap Core Responsible Index Fund Class R6 (CSXRX) has a higher volatility of 3.66% compared to Calvert Ultra-Short Duration Income Fund (CULAX) at 0.18%. This indicates that CSXRX'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.

Volatility by Period

	CSXRX	CULAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.66%	0.18%	+3.48%
Volatility (6M) Calculated over the trailing 6-month period	10.80%	0.88%	+9.92%
Volatility (1Y) Calculated over the trailing 1-year period	13.52%	1.27%	+12.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.92%	1.36%	+16.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.57%	1.42%	+18.15%

CSXRX vs. CULAX - Expense Ratio Comparison

CSXRX has a 0.19% expense ratio, which is lower than CULAX's 0.72% expense ratio.

Dividends

CSXRX vs. CULAX - Dividend Comparison

CSXRX's dividend yield for the trailing twelve months is around 4.91%, more than CULAX's 3.52% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CSXRX Calvert US Large Cap Core Responsible Index Fund Class R6	4.91%	5.47%	1.83%	1.08%	1.28%	1.07%	0.97%	1.17%	4.40%	2.41%	0.00%	0.00%
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

Can I hold both CSXRX and CULAX in my portfolio?

CSXRX and CULAX have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CSXRX or CULAX?

CSXRX has higher volatility (3.66%) compared to CULAX (0.18%). In terms of maximum drawdown, CSXRX dropped -32.82% vs CULAX's -7.40%.

Which has better risk-adjusted returns?

CULAX currently has the higher Sharpe Ratio (3.11 vs 1.48), 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.