DBLSX vs. ACSNX

Last updated Jun 4, 2026

DBLSX (DoubleLine Low Duration Bond Fund) and ACSNX (American Century Short Duration Fund) are both Short-Term Bond funds. Over the past 10 years, DBLSX returned 2.87%/yr vs 2.32%/yr for ACSNX. A 0.51 correlation means they provide meaningful diversification when combined. DBLSX charges 0.41%/yr vs 0.57%/yr for ACSNX.

Performance

DBLSX vs. ACSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in DoubleLine Low Duration Bond Fund (DBLSX) and American Century Short Duration Fund (ACSNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DBLSX achieves a 1.06% return, which is significantly higher than ACSNX's 0.86% return. Over the past 10 years, DBLSX has outperformed ACSNX with an annualized return of 2.87%, while ACSNX has yielded a comparatively lower 2.32% annualized return.

DBLSX

• 1D: 0.00%
• 1M: 0.25%
• YTD: 1.06%
• 6M: 1.37%
• 1Y: 4.51%
• 3Y*: 5.51%
• 5Y*: 3.17%
• 10Y*: 2.87%

ACSNX

• 1D: 0.00%
• 1M: 0.24%
• YTD: 0.86%
• 6M: 1.23%
• 1Y: 4.24%
• 3Y*: 4.85%
• 5Y*: 2.19%
• 10Y*: 2.32%

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

DBLSX vs. ACSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DBLSX DoubleLine Low Duration Bond Fund	1.06%	5.74%	5.32%	6.76%	-2.69%	0.70%	2.02%	4.73%	1.40%	2.65%
ACSNX American Century Short Duration Fund	0.86%	5.65%	4.69%	4.72%	-4.68%	0.97%	4.03%	3.95%	1.35%	1.42%

Correlation

The correlation between DBLSX and ACSNX is 0.63, 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	0.63
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.68
Correlation (10Y) Calculated over the trailing 10-year period	0.57
Correlation (All Time) Calculated using the full available price history since Oct 7, 2011	0.51

The correlation between DBLSX and ACSNX shifts across timeframes, from 0.51 (all time) to 0.68 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

DBLSX vs. ACSNX — Risk / Return Rank

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

DBLSX

DBLSX Risk / Return Rank: 97
DBLSX Sharpe Ratio Rank: 97
DBLSX Sortino Ratio Rank: 98
DBLSX Omega Ratio Rank: 98
DBLSX Calmar Ratio Rank: 96
DBLSX Martin Ratio Rank: 98

ACSNX

ACSNX Risk / Return Rank: 79
ACSNX Sharpe Ratio Rank: 60
ACSNX Sortino Ratio Rank: 92
ACSNX Omega Ratio Rank: 90
ACSNX Calmar Ratio Rank: 77
ACSNX Martin Ratio Rank: 77

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.

DBLSX vs. ACSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for DoubleLine Low Duration Bond Fund (DBLSX) and American Century Short Duration Fund (ACSNX). 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.

	DBLSX	ACSNX	Difference
Sharpe ratio: Return per unit of total volatility	3.76	2.29	+1.47
Sortino ratio: Return per unit of downside risk	6.30	4.60	+1.70
Omega ratio: Gain probability vs. loss probability	2.06	1.64	+0.41
Calmar ratio: Return relative to maximum drawdown	6.27	3.51	+2.76
Martin ratio: Return relative to average drawdown	28.69	14.48	+14.21
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DBLSX vs. ACSNX - Sharpe Ratio Comparison

The current DBLSX Sharpe Ratio is 3.76, which is higher than the ACSNX Sharpe Ratio of 2.29. The chart below compares the historical Sharpe Ratios of DBLSX and ACSNX, 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

	DBLSX	ACSNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.76	2.29	+1.47
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.28	1.00	+1.28
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.04	1.22	-1.17
Sharpe Ratio (All Time) Calculated using the full available price history	0.05	1.38	-1.33

Drawdowns

DBLSX vs. ACSNX - Drawdown Comparison

The maximum DBLSX drawdown since its inception was -57.22%, which is greater than ACSNX's maximum drawdown of -6.50%. Use the drawdown chart below to compare losses from any high point for DBLSX and ACSNX.

Drawdown Indicators

	DBLSX	ACSNX	Difference
Max Drawdown Largest peak-to-trough decline	-57.22%	-6.50%	-50.72%
Max Drawdown (1Y) Largest decline over 1 year	-0.72%	-1.21%	+0.49%
Max Drawdown (3Y) Largest decline over 3 years	-0.72%	-1.21%	+0.49%
Max Drawdown (5Y) Largest decline over 5 years	-4.71%	-6.50%	+1.79%
Max Drawdown (10Y) Largest decline over 10 years	-57.22%	-6.50%	-50.72%
Current Drawdown Current decline from peak	-45.00%	-0.10%	-44.90%
Average Drawdown Average peak-to-trough decline	-31.51%	-0.59%	-30.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.16%	0.29%	-0.13%

Volatility

DBLSX vs. ACSNX - Volatility Comparison

The current volatility for DoubleLine Low Duration Bond Fund (DBLSX) is 0.42%, while American Century Short Duration Fund (ACSNX) has a volatility of 0.61%. This indicates that DBLSX experiences smaller price fluctuations and is considered to be less risky than ACSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DBLSX	ACSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.42%	0.61%	-0.19%
Volatility (6M) Calculated over the trailing 6-month period	0.89%	1.36%	-0.47%
Volatility (1Y) Calculated over the trailing 1-year period	1.20%	1.86%	-0.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.39%	2.20%	-0.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	63.99%	1.91%	+62.08%

DBLSX vs. ACSNX - Expense Ratio Comparison

DBLSX has a 0.41% expense ratio, which is lower than ACSNX's 0.57% expense ratio.

Dividends

DBLSX vs. ACSNX - Dividend Comparison

DBLSX's dividend yield for the trailing twelve months is around 4.55%, more than ACSNX's 4.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACSNX American Century Short Duration Fund	4.38%	4.55%	4.56%	3.96%	1.60%	1.74%	1.51%	2.59%	2.53%	1.91%	1.62%	1.73%
DBLSX DoubleLine Low Duration Bond Fund	4.55%	4.64%	5.09%	4.49%	2.50%	1.72%	2.37%	3.21%	2.92%	2.42%	2.52%	2.47%

Frequently Asked Questions

Can I hold both DBLSX and ACSNX in my portfolio?

DBLSX and ACSNX have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DBLSX or ACSNX?

ACSNX has higher volatility (0.61%) compared to DBLSX (0.42%). In terms of maximum drawdown, DBLSX dropped -57.22% vs ACSNX's -6.50%.

Which has better risk-adjusted returns?

DBLSX currently has the higher Sharpe Ratio (3.76 vs 2.29), 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.