CSDAX vs. STBFX

Last updated Jun 24, 2026

CSDAX (Calvert Short Duration Income Fund) and STBFX (Sextant Short Term Bond Fund) are both Short-Term Bond funds. A 0.51 correlation means they provide meaningful diversification when combined. CSDAX charges 0.76%/yr vs 0.60%/yr for STBFX.

Performance

CSDAX vs. STBFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Calvert Short Duration Income Fund (CSDAX) and Sextant Short Term Bond Fund (STBFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

CSDAX

• 1D: -0.13%
• 1M: 0.22%
• YTD: 0.36%
• 6M: 0.86%
• 1Y: 3.90%
• 3Y*: 5.20%
• 5Y*: 2.45%
• 10Y*: 2.65%

STBFX

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

CSDAX vs. STBFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSDAX Calvert Short Duration Income Fund	0.36%	6.22%	5.00%	6.58%	-5.36%	0.88%	4.52%	6.21%	0.05%	2.17%
STBFX Sextant Short Term Bond Fund	0.28%	4.92%	3.87%	3.79%	-4.16%	-1.09%	3.42%	4.03%	1.09%	0.50%

Correlation

The correlation between CSDAX and STBFX is 0.51, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.51
Correlation (3Y) Calculated over the trailing 3-year period	0.61
Correlation (5Y) Calculated over the trailing 5-year period	0.65
Correlation (10Y) Calculated over the trailing 10-year period	0.56
Correlation (All Time) Calculated using the full available price history since Jan 31, 2002	0.51

The correlation between CSDAX and STBFX shifts across timeframes, from 0.51 (all time) to 0.65 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

CSDAX vs. STBFX — Risk / Return Rank

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

CSDAX

CSDAX Risk / Return Rank: 60
CSDAX Sharpe Ratio Rank: 50
CSDAX Sortino Ratio Rank: 79
CSDAX Omega Ratio Rank: 68
CSDAX Calmar Ratio Rank: 52
CSDAX Martin Ratio Rank: 50

STBFX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

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.

CSDAX vs. STBFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Calvert Short Duration Income Fund (CSDAX) and Sextant Short Term Bond Fund (STBFX). 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.

	CSDAX	STBFX	Difference
Sharpe ratio: Return per unit of total volatility	1.94	—	—
Sortino ratio: Return per unit of downside risk	3.46	—	—
Omega ratio: Gain probability vs. loss probability	1.42	—	—
Calmar ratio: Return relative to maximum drawdown	2.63	—	—
Martin ratio: Return relative to average drawdown	9.77	—	—

Drawdowns

Drawdown Indicators

	CSDAX	STBFX	Difference
Max Drawdown Largest peak-to-trough decline	-9.96%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-1.51%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-1.51%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-8.14%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-9.96%	—	—
Current Drawdown Current decline from peak	-0.59%	—	—
Average Drawdown Average peak-to-trough decline	-0.71%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	0.41%	—	—

Volatility

Volatility by Period

	CSDAX	STBFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.73%	—	—
Volatility (6M) Calculated over the trailing 6-month period	1.56%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	2.06%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.40%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.31%	—	—

CSDAX vs. STBFX - Expense Ratio Comparison

CSDAX has a 0.76% expense ratio, which is higher than STBFX's 0.60% expense ratio.

Dividends

CSDAX vs. STBFX - Dividend Comparison

CSDAX's dividend yield for the trailing twelve months is around 4.37%, more than STBFX's 2.61% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CSDAX Calvert Short Duration Income Fund	4.37%	4.42%	4.28%	3.24%	1.95%	2.25%	2.58%	2.79%	2.67%	1.84%	2.07%	1.84%
STBFX Sextant Short Term Bond Fund	2.61%	3.17%	2.77%	1.84%	1.04%	1.07%	1.60%	1.75%	1.47%	1.30%	1.06%	1.07%

Frequently Asked Questions

Can I hold both CSDAX and STBFX in my portfolio?

CSDAX and STBFX have a correlation of 0.51, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.