CBUDX vs. CULAX

Last updated Jun 4, 2026

CBUDX (CrossingBridge Ultra-Short Duration Fund) and CULAX (Calvert Ultra-Short Duration Income Fund) are both Ultrashort Bond funds. Over the past 3 years, CBUDX returned 5.39%/yr vs 5.11%/yr for CULAX. At a 0.10 correlation, their price movements are largely independent. CBUDX charges 0.89%/yr vs 0.72%/yr for CULAX.

Performance

CBUDX vs. CULAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in CrossingBridge Ultra-Short Duration Fund (CBUDX) 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, CBUDX achieves a 1.54% return, which is significantly higher than CULAX's 1.34% return.

CBUDX

• 1D: 0.00%
• 1M: 0.33%
• YTD: 1.54%
• 6M: 2.19%
• 1Y: 4.64%
• 3Y*: 5.39%
• 5Y*: —
• 10Y*: —

CULAX

• 1D: 0.00%
• 1M: 0.31%
• YTD: 1.34%
• 6M: 1.77%
• 1Y: 4.21%
• 3Y*: 5.11%
• 5Y*: 3.38%
• 10Y*: 2.47%

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

CBUDX vs. CULAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
CBUDX CrossingBridge Ultra-Short Duration Fund	1.54%	5.25%	5.83%	5.61%	2.25%	0.26%
CULAX Calvert Ultra-Short Duration Income Fund	1.34%	4.55%	5.69%	6.07%	-0.56%	-0.06%

Correlation

The correlation between CBUDX and CULAX is -0.07, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.07
Correlation (3Y) Calculated over the trailing 3-year period	0.08
Correlation (All Time) Calculated using the full available price history since Jul 1, 2021	0.10

The correlation between CBUDX and CULAX shifts across timeframes, from -0.07 (1 year) to 0.10 (all time), reflecting how their relationship changes across market environments.

Return for Risk

CBUDX vs. CULAX — Risk / Return Rank

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

CBUDX

CBUDX Risk / Return Rank: 99
CBUDX Sharpe Ratio Rank: 100
CBUDX Sortino Ratio Rank: 99
CBUDX Omega Ratio Rank: 100
CBUDX Calmar Ratio Rank: 99
CBUDX Martin Ratio Rank: 100

CULAX

CULAX Risk / Return Rank: 98
CULAX Sharpe Ratio Rank: 94
CULAX Sortino Ratio Rank: 100
CULAX Omega Ratio Rank: 99
CULAX Calmar Ratio Rank: 99
CULAX Martin Ratio Rank: 99

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.

CBUDX vs. CULAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for CrossingBridge Ultra-Short Duration Fund (CBUDX) 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.

	CBUDX	CULAX	Difference
Sharpe ratio: Return per unit of total volatility	5.56	3.22	+2.34
Sortino ratio: Return per unit of downside risk	10.60	11.38	-0.78
Omega ratio: Gain probability vs. loss probability	4.55	4.15	+0.40
Calmar ratio: Return relative to maximum drawdown	11.64	13.98	-2.34
Martin ratio: Return relative to average drawdown	79.04	56.95	+22.09
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CBUDX vs. CULAX - Sharpe Ratio Comparison

The current CBUDX Sharpe Ratio is 5.56, which is higher than the CULAX Sharpe Ratio of 3.22. The chart below compares the historical Sharpe Ratios of CBUDX 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.

Sharpe Ratios by Period

	CBUDX	CULAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	5.56	3.22	+2.34
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	2.53	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	1.75	—
Sharpe Ratio (All Time) Calculated using the full available price history	4.61	2.07	+2.54

Drawdowns

CBUDX vs. CULAX - Drawdown Comparison

The maximum CBUDX drawdown since its inception was -0.40%, smaller than the maximum CULAX drawdown of -7.40%. Use the drawdown chart below to compare losses from any high point for CBUDX and CULAX.

Drawdown Indicators

	CBUDX	CULAX	Difference
Max Drawdown Largest peak-to-trough decline	-0.40%	-7.40%	+7.00%
Max Drawdown (1Y) Largest decline over 1 year	-0.40%	-0.30%	-0.10%
Max Drawdown (3Y) Largest decline over 3 years	-0.40%	-0.30%	-0.10%
Max Drawdown (5Y) Largest decline over 5 years	—	-2.19%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-7.40%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.03%	-0.21%	+0.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.06%	0.07%	-0.01%

Volatility

CBUDX vs. CULAX - Volatility Comparison

The current volatility for CrossingBridge Ultra-Short Duration Fund (CBUDX) is 0.26%, while Calvert Ultra-Short Duration Income Fund (CULAX) has a volatility of 0.31%. This indicates that CBUDX experiences smaller price fluctuations and is considered to be less risky than CULAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CBUDX	CULAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.26%	0.31%	-0.05%
Volatility (6M) Calculated over the trailing 6-month period	0.67%	0.84%	-0.17%
Volatility (1Y) Calculated over the trailing 1-year period	0.84%	1.32%	-0.48%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.92%	1.35%	-0.43%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.92%	1.42%	-0.50%

CBUDX vs. CULAX - Expense Ratio Comparison

CBUDX has a 0.89% expense ratio, which is higher than CULAX's 0.72% expense ratio.

Dividends

CBUDX vs. CULAX - Dividend Comparison

CBUDX's dividend yield for the trailing twelve months is around 4.45%, more than CULAX's 3.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CBUDX CrossingBridge Ultra-Short Duration Fund	4.45%	4.61%	5.68%	5.67%	2.94%	0.16%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
CULAX Calvert Ultra-Short Duration Income Fund	3.91%	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 CBUDX and CULAX in my portfolio?

CBUDX and CULAX have a correlation of -0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CBUDX or CULAX?

CULAX has higher volatility (0.31%) compared to CBUDX (0.26%). In terms of maximum drawdown, CBUDX dropped -0.40% vs CULAX's -7.40%.

Which has better risk-adjusted returns?

CBUDX currently has the higher Sharpe Ratio (5.56 vs 3.22), 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.