FZOMX vs. BOXX

Last updated Apr 2, 2026

Compare and contrast key facts about Fidelity SAI Short-Term Bond Fund (FZOMX) and Alpha Architect 1-3 Month Box ETF (BOXX).

FZOMX is managed by Fidelity. It was launched on Oct 13, 2020. BOXX is a passively managed fund by Alpha Architect that tracks the performance of the Solactive 1-3 Month US T-Bill Index. It was launched on Dec 27, 2022.

Performance

FZOMX vs. BOXX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity SAI Short-Term Bond Fund (FZOMX) and Alpha Architect 1-3 Month Box ETF (BOXX). The values are adjusted to include any dividend payments, if applicable.

FZOMX vs. BOXX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
FZOMX Fidelity SAI Short-Term Bond Fund	0.22%	5.51%	4.71%	5.21%	0.18%
BOXX Alpha Architect 1-3 Month Box ETF	0.96%	4.37%	5.16%	5.04%	0.07%

Returns By Period

In the year-to-date period, FZOMX achieves a 0.22% return, which is significantly lower than BOXX's 0.96% return.

FZOMX

• 1D: 0.10%
• 1M: -0.41%
• YTD: 0.22%
• 6M: 1.18%
• 1Y: 3.98%
• 3Y*: 4.68%
• 5Y*: 2.25%
• 10Y*: —

BOXX

• 1D: -0.07%
• 1M: 0.32%
• YTD: 0.96%
• 6M: 2.05%
• 1Y: 4.22%
• 3Y*: 4.80%
• 5Y*: —
• 10Y*: —

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

FZOMX vs. BOXX - Expense Ratio Comparison

FZOMX has a 0.30% expense ratio, which is higher than BOXX's 0.19% expense ratio.

FZOMX

Fidelity SAI Short-Term Bond Fund

BOXX

Alpha Architect 1-3 Month Box ETF

Return for Risk

FZOMX vs. BOXX — Risk / Return Rank

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

FZOMX

FZOMX Risk / Return Rank: 94
FZOMX Sharpe Ratio Rank: 90
FZOMX Sortino Ratio Rank: 96
FZOMX Omega Ratio Rank: 93
FZOMX Calmar Ratio Rank: 96
FZOMX Martin Ratio Rank: 95

BOXX

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

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. BOXX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity SAI Short-Term Bond Fund (FZOMX) and Alpha Architect 1-3 Month Box ETF (BOXX). 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	BOXX	Difference
Sharpe ratio Return per unit of total volatility	1.90	12.86	-10.96
Sortino ratio Return per unit of downside risk	3.42	36.75	-33.33
Omega ratio Gain probability vs. loss probability	1.47	9.21	-7.74
Calmar ratio Return relative to maximum drawdown	3.56	61.54	-57.98
Martin ratio Return relative to average drawdown	14.10	571.35	-557.25
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. BOXX - Sharpe Ratio Comparison

The current FZOMX Sharpe Ratio is 1.90, which is lower than the BOXX Sharpe Ratio of 12.86. The chart below compares the historical Sharpe Ratios of FZOMX and BOXX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	FZOMX	BOXX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.90	12.86	-10.96
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.04	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.98	12.97	-11.98

Correlation

The correlation between FZOMX and BOXX is 0.04, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

FZOMX vs. BOXX - Dividend Comparison

FZOMX's dividend yield for the trailing twelve months is around 4.23%, while BOXX has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022	2021	2020
FZOMX Fidelity SAI Short-Term Bond Fund	4.23%	4.64%	4.27%	3.26%	0.76%	0.41%	0.07%
BOXX Alpha Architect 1-3 Month Box ETF	0.00%	0.00%	0.26%	0.00%	0.00%	0.00%	0.00%

Drawdowns

FZOMX vs. BOXX - Drawdown Comparison

The maximum FZOMX drawdown since its inception was -6.12%, which is greater than BOXX's maximum drawdown of -0.12%. Use the drawdown chart below to compare losses from any high point for FZOMX and BOXX.

Drawdown Indicators

	FZOMX	BOXX	Difference
Max Drawdown Largest peak-to-trough decline	-6.12%	-0.12%	-6.00%
Max Drawdown (1Y) Largest decline over 1 year	-1.23%	-0.07%	-1.16%
Max Drawdown (5Y) Largest decline over 5 years	-6.12%	—	—
Current Drawdown Current decline from peak	-0.61%	-0.07%	-0.54%
Average Drawdown Average peak-to-trough decline	-1.32%	0.00%	-1.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.31%	0.01%	+0.30%

Volatility

FZOMX vs. BOXX - Volatility Comparison

Fidelity SAI Short-Term Bond Fund (FZOMX) has a higher volatility of 0.70% compared to Alpha Architect 1-3 Month Box ETF (BOXX) at 0.15%. This indicates that FZOMX's price experiences larger fluctuations and is considered to be riskier than BOXX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FZOMX	BOXX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.70%	0.15%	+0.55%
Volatility (6M) Calculated over the trailing 6-month period	1.38%	0.25%	+1.13%
Volatility (1Y) Calculated over the trailing 1-year period	2.14%	0.33%	+1.81%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.17%	0.37%	+1.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.08%	0.37%	+1.71%