FZOMX vs. DBLSX

Last updated Jun 4, 2026

FZOMX (Fidelity SAI Short-Term Bond Fund) and DBLSX (DoubleLine Low Duration Bond Fund) are both Short-Term Bond funds. Over the past 5 years, FZOMX returned 2.33%/yr vs 3.17%/yr for DBLSX. A 0.69 correlation means they provide meaningful diversification when combined. FZOMX charges 0.30%/yr vs 0.41%/yr for DBLSX.

Performance

FZOMX vs. DBLSX - Performance Comparison

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

Returns By Period

In the year-to-date period, FZOMX achieves a 0.93% return, which is significantly lower than DBLSX's 1.06% return.

FZOMX

• 1D: 0.00%
• 1M: 0.24%
• YTD: 0.93%
• 6M: 1.18%
• 1Y: 4.18%
• 3Y*: 4.90%
• 5Y*: 2.33%
• 10Y*: —

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%

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

FZOMX vs. DBLSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
FZOMX Fidelity SAI Short-Term Bond Fund	0.93%	5.51%	4.71%	5.21%	-3.71%	-0.69%	0.37%
DBLSX DoubleLine Low Duration Bond Fund	1.06%	5.74%	5.32%	6.76%	-2.69%	0.70%	0.90%

Correlation

The correlation between FZOMX and DBLSX is 0.71, 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	0.71
Correlation (3Y) Calculated over the trailing 3-year period	0.69
Correlation (5Y) Calculated over the trailing 5-year period	0.71
Correlation (All Time) Calculated using the full available price history since Sep 16, 2020	0.69

The correlation between FZOMX and DBLSX has been stable across timeframes, ranging from 0.69 to 0.71 - a consistent structural relationship.

Return for Risk

FZOMX vs. DBLSX — Risk / Return Rank

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

FZOMX

FZOMX Risk / Return Rank: 72
FZOMX Sharpe Ratio Rank: 47
FZOMX Sortino Ratio Rank: 84
FZOMX Omega Ratio Rank: 77
FZOMX Calmar Ratio Rank: 73
FZOMX Martin Ratio Rank: 79

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

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.

FZOMX vs. DBLSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Short-Term Bond Fund (FZOMX) and DoubleLine Low Duration Bond Fund (DBLSX). 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.

	FZOMX	DBLSX	Difference
Sharpe ratio: Return per unit of total volatility	2.01	3.76	-1.75
Sortino ratio: Return per unit of downside risk	3.96	6.30	-2.34
Omega ratio: Gain probability vs. loss probability	1.50	2.06	-0.55
Calmar ratio: Return relative to maximum drawdown	3.33	6.27	-2.94
Martin ratio: Return relative to average drawdown	14.91	28.69	-13.78
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FZOMX vs. DBLSX - Sharpe Ratio Comparison

The current FZOMX Sharpe Ratio is 2.01, which is lower than the DBLSX Sharpe Ratio of 3.76. The chart below compares the historical Sharpe Ratios of FZOMX and DBLSX, 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

	FZOMX	DBLSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.01	3.76	-1.75
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.06	2.28	-1.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.04	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.01	0.05	+0.96

Drawdowns

FZOMX vs. DBLSX - Drawdown Comparison

The maximum FZOMX drawdown since its inception was -6.12%, smaller than the maximum DBLSX drawdown of -57.22%. Use the drawdown chart below to compare losses from any high point for FZOMX and DBLSX.

Drawdown Indicators

	FZOMX	DBLSX	Difference
Max Drawdown Largest peak-to-trough decline	-6.12%	-57.22%	+51.10%
Max Drawdown (1Y) Largest decline over 1 year	-1.23%	-0.72%	-0.51%
Max Drawdown (3Y) Largest decline over 3 years	-1.23%	-0.72%	-0.51%
Max Drawdown (5Y) Largest decline over 5 years	-6.12%	-4.71%	-1.41%
Max Drawdown (10Y) Largest decline over 10 years	—	-57.22%	—
Current Drawdown Current decline from peak	-0.10%	-45.00%	+44.90%
Average Drawdown Average peak-to-trough decline	-1.29%	-31.51%	+30.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.27%	0.16%	+0.11%

Volatility

FZOMX vs. DBLSX - Volatility Comparison

Fidelity SAI Short-Term Bond Fund (FZOMX) has a higher volatility of 0.63% compared to DoubleLine Low Duration Bond Fund (DBLSX) at 0.42%. This indicates that FZOMX's price experiences larger fluctuations and is considered to be riskier than DBLSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FZOMX	DBLSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.63%	0.42%	+0.21%
Volatility (6M) Calculated over the trailing 6-month period	1.46%	0.89%	+0.57%
Volatility (1Y) Calculated over the trailing 1-year period	2.04%	1.20%	+0.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.21%	1.39%	+0.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.08%	63.99%	-61.91%

FZOMX vs. DBLSX - Expense Ratio Comparison

FZOMX has a 0.30% expense ratio, which is lower than DBLSX's 0.41% expense ratio.

Dividends

FZOMX vs. DBLSX - Dividend Comparison

FZOMX's dividend yield for the trailing twelve months is around 4.53%, which matches DBLSX's 4.55% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
FZOMX Fidelity SAI Short-Term Bond Fund	4.53%	4.64%	4.27%	3.26%	0.76%	0.41%	0.07%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FZOMX and DBLSX in my portfolio?

FZOMX and DBLSX have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FZOMX or DBLSX?

FZOMX has higher volatility (0.63%) compared to DBLSX (0.42%). In terms of maximum drawdown, FZOMX dropped -6.12% vs DBLSX's -57.22%.

Which has better risk-adjusted returns?

DBLSX currently has the higher Sharpe Ratio (3.76 vs 2.01), 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.