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ISIN
US1315826115
CUSIP
131582611
Inception Date
Oct 31, 2006
Min. Investment
$1,000
Distribution Policy
Distributing
Asset Class
Bond

Share Price Chart


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Performance

CULAX Performance Chart

Calvert Ultra-Short Duration Income Fund (CULAX) is up 1.3% since the beginning of the year. CULAX is currently trading at $10 per share. Investors who bought $1,000 worth of CULAX shares 5 years ago would now be looking at an investment worth $1,181.


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S&P 500 Index

Returns By Period

Calvert Ultra-Short Duration Income Fund (CULAX) has returned 1.34% so far this year and 4.10% over the past 12 months. Over the last ten years, CULAX has returned 2.46% per year, falling short of the S&P 500 Index benchmark, which averaged 13.88% annually.


Calvert Ultra-Short Duration Income Fund

1D
0.10%
1M
0.31%
YTD
1.34%
6M
1.77%
1Y
4.10%
3Y*
5.11%
5Y*
3.38%
10Y*
2.46%

Benchmark (S&P 500 Index)

1D
-0.37%
1M
-0.01%
YTD
9.16%
6M
8.64%
1Y
25.22%
3Y*
19.78%
5Y*
11.99%
10Y*
13.88%
*Multi-year figures are annualized to reflect compound growth (CAGR)

CULAX Monthly Returns History

Based on dividend-adjusted daily data since Oct 31, 2006, CULAX's average daily return is +0.01%, while the average monthly return is +0.20%. At this rate, an investment would double in approximately 28.9 years.

Historically, 83% of months were positive and 17% were negative. The best month was Apr 2020 with a return of +1.6%, while the worst month was Mar 2020 at -4.8%. The longest winning streak lasted 44 consecutive months, and the longest losing streak was 6 months.

On a daily basis, CULAX closed higher 19% of trading days. The best single day was Mar 27, 2020 with a return of +1.3%, while the worst single day was Mar 19, 2020 at -1.0%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
20260.31%0.30%0.11%0.31%0.31%0.00%1.34%
20250.38%0.47%0.27%0.29%0.36%0.46%0.25%0.55%0.34%0.24%0.43%0.42%4.55%
20240.52%0.41%0.52%0.32%0.53%0.42%0.63%0.63%0.50%0.29%0.39%0.39%5.69%
20230.96%0.23%0.15%0.57%0.27%0.58%0.49%0.50%0.41%0.31%0.72%0.73%6.07%
2022-0.25%-0.25%-0.36%-0.23%-0.11%-0.72%0.46%0.19%-0.41%0.12%0.49%0.52%-0.56%
20210.18%0.07%-0.03%0.16%0.06%0.05%0.05%0.04%0.03%-0.06%-0.16%0.04%0.43%

Benchmark Metrics

Calvert Ultra-Short Duration Income Fund has an annualized alpha of 2.38%, beta of 0.00, and R2 of 0.00 versus S&P 500 Index. Calculated based on daily prices since October 31, 2006.

  • This fund captured 7.42% of S&P 500 Index gains and tended to rise during its downturns (downside capture of -0.83%) - a profile typical of hedging or uncorrelated assets.
  • Beta of 0.00 may look defensive, but with R2 of 0.00 this fund is largely uncorrelated with S&P 500 Index - low beta reflects independence, not downside protection. See the Volatility section for a true picture of this fund's risk.
  • R2 of 0.00 means this fund moves largely independently of S&P 500 Index - capture ratios reflect limited market correlation rather than active downside protection. Consider using a more representative benchmark.

Alpha
2.38%
Beta
0.00
0.00
Upside Capture
7.42%
Downside Capture
-0.83%

Expense Ratio

CULAX has an expense ratio of 0.72%, placing it in the medium range.


Return for Risk

Risk / Return Rank

CULAX ranks 99 for risk / return — in the top 99% of mutual funds on our site. This means strong returns relative to risk — exactly what professional investors look for. Well-suited for investors who want to maximize return per unit of risk.


CULAX Risk / Return Rank: 9999
Overall Rank
CULAX Sharpe Ratio Rank: 9696
Sharpe Ratio Rank
CULAX Sortino Ratio Rank: 9999
Sortino Ratio Rank
CULAX Omega Ratio Rank: 9999
Omega Ratio Rank
CULAX Calmar Ratio Rank: 9999
Calmar Ratio Rank
CULAX Martin Ratio Rank: 9999
Martin Ratio Rank
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.

Return / Risk — by metrics

The table below present risk-adjusted performance metrics for Calvert Ultra-Short Duration Income Fund (CULAX) and compare them to S&P 500 Index.

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.


CULAXBenchmarkDifference
Sharpe ratioReturn per unit of total volatility

+1.12

Sortino ratioReturn per unit of downside risk

+8.35

Omega ratioGain probability vs. loss probability

4.07

1.37

+2.71

Calmar ratioReturn relative to maximum drawdown

13.63

2.78

+10.85

Martin ratioReturn relative to average drawdown

55.94

12.44

+43.50

Dividends

Dividend History

Calvert Ultra-Short Duration Income Fund provided a 3.91% dividend yield over the last twelve months, with an annual payout of $0.39 per share.


1.00%2.00%3.00%4.00%5.00%$0.00$0.10$0.20$0.30$0.40$0.5020152016201720182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM20252024202320222021202020192018201720162015
Dividend$0.39$0.41$0.49$0.45$0.14$0.06$0.12$0.24$0.21$0.11$0.11$0.07

Dividend yield

3.91%4.13%4.90%4.52%1.47%0.64%1.25%2.44%2.10%1.13%1.10%0.66%

Monthly Dividends

The table displays the monthly dividend distributions for Calvert Ultra-Short Duration Income Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026$0.03$0.03$0.03$0.03$0.03$0.00$0.15
2025$0.04$0.04$0.04$0.03$0.04$0.03$0.03$0.03$0.03$0.03$0.03$0.03$0.41
2024$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.49
2023$0.03$0.03$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.04$0.45
2022$0.01$0.01$0.01$0.01$0.01$0.00$0.02$0.02$0.00$0.02$0.03$0.03$0.14
2021$0.01$0.01$0.01$0.01$0.01$0.01$0.01$0.00$0.00$0.00$0.00$0.00$0.06

Drawdowns

Drawdowns Chart

The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.


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Worst Drawdowns

The table below displays the maximum drawdowns of the Calvert Ultra-Short Duration Income Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.

The maximum drawdown for the Calvert Ultra-Short Duration Income Fund was 7.40%, occurring on Mar 25, 2020. Recovery took 177 trading sessions.


Related event

Drawdown

Fall

Recovery

Underwater

COVID crash2020
-7.40%Mar 2020
20d8mo 14d
9mo 4dMar 2020 - Dec 2020
Bear market2022
-2.19%Jul 2022
9mo 9d6mo 21d
1y 3moOct 2021 - Jan 2023
2011 pullback2011
-1.38%Oct 2011
4mo 1d5mo 6d
9mo 7dJun 2011 - Mar 2012
2007 pullback2007
-1.19%Aug 2007
11d1mo 3d
1mo 14dAug 2007 - Sep 2007
Financial crisis2007–2009
-0.93%Oct 2008
28d2mo 17d
3mo 15dSep 2008 - Dec 2008

Drawdown Indicators


CULAXBenchmarkDifference

Max Drawdown

Largest peak-to-trough decline

-7.40%

-56.78%

+49.38%

Max Drawdown (1Y)

Largest decline over 1 year

-0.30%

-9.10%

+8.80%

Max Drawdown (3Y)

Largest decline over 3 years

-0.30%

-18.90%

+18.60%

Max Drawdown (5Y)

Largest decline over 5 years

-2.19%

-25.43%

+23.24%

Max Drawdown (10Y)

Largest decline over 10 years

-7.40%

-33.92%

+26.52%

Current Drawdown

Current decline from peak

-0.00%

-1.80%

+1.80%

Average Drawdown

Average peak-to-trough decline

-0.21%

-10.71%

+10.50%

Ulcer Index

Depth and duration of drawdowns from previous peaks

0.07%

2.03%

-1.96%

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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Portfolio Analyzer

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