ANBAX vs. BFMSX

Last updated Jun 3, 2026

ANBAX (American Funds Strategic Bond Fund) and BFMSX (BlackRock Low Duration Bond Portfolio) are both mutual funds - ANBAX is a Intermediate Core-Plus Bond fund managed by American Funds, while BFMSX is a Short-Term Bond fund managed by BlackRock. Over the past 5 years, ANBAX returned -1.01%/yr vs 2.07%/yr for BFMSX. A 0.61 correlation means they provide meaningful diversification when combined. ANBAX charges 0.71%/yr vs 0.41%/yr for BFMSX.

Performance

ANBAX vs. BFMSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Strategic Bond Fund (ANBAX) and BlackRock Low Duration Bond Portfolio (BFMSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ANBAX achieves a -0.81% return, which is significantly lower than BFMSX's 0.92% return.

ANBAX

• 1D: -0.11%
• 1M: -0.00%
• YTD: -0.81%
• 6M: -0.70%
• 1Y: 2.54%
• 3Y*: 2.08%
• 5Y*: -1.01%
• 10Y*: —

BFMSX

• 1D: 0.00%
• 1M: 0.17%
• YTD: 0.92%
• 6M: 1.43%
• 1Y: 4.64%
• 3Y*: 5.06%
• 5Y*: 2.07%
• 10Y*: 2.30%

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

ANBAX vs. BFMSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ANBAX American Funds Strategic Bond Fund	-0.81%	7.18%	-0.61%	1.52%	-12.74%	-1.13%	18.10%	7.83%	0.28%	2.97%
BFMSX BlackRock Low Duration Bond Portfolio	0.92%	6.20%	4.94%	4.96%	-5.34%	-0.33%	3.47%	4.75%	1.15%	1.98%

Correlation

The correlation between ANBAX and BFMSX is 0.67, 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	0.67
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.71
Correlation (All Time) Calculated using the full available price history since Jan 4, 2017	0.61

The correlation between ANBAX and BFMSX shifts across timeframes, from 0.61 (all time) to 0.73 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

ANBAX vs. BFMSX — Risk / Return Rank

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

ANBAX

ANBAX Risk / Return Rank: 6
ANBAX Sharpe Ratio Rank: 6
ANBAX Sortino Ratio Rank: 6
ANBAX Omega Ratio Rank: 6
ANBAX Calmar Ratio Rank: 6
ANBAX Martin Ratio Rank: 6

BFMSX

BFMSX Risk / Return Rank: 76
BFMSX Sharpe Ratio Rank: 56
BFMSX Sortino Ratio Rank: 86
BFMSX Omega Ratio Rank: 87
BFMSX Calmar Ratio Rank: 73
BFMSX Martin Ratio Rank: 81

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.

ANBAX vs. BFMSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Strategic Bond Fund (ANBAX) and BlackRock Low Duration Bond Portfolio (BFMSX). 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.

	ANBAX	BFMSX	Difference
Sharpe ratio Return per unit of total volatility	0.54	2.20	-1.66
Sortino ratio Return per unit of downside risk	0.78	4.05	-3.28
Omega ratio Gain probability vs. loss probability	1.11	1.60	-0.49
Calmar ratio Return relative to maximum drawdown	0.64	3.32	-2.68
Martin ratio Return relative to average drawdown	1.93	15.12	-13.19
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ANBAX vs. BFMSX - Sharpe Ratio Comparison

The current ANBAX Sharpe Ratio is 0.54, which is lower than the BFMSX Sharpe Ratio of 2.20. The chart below compares the historical Sharpe Ratios of ANBAX and BFMSX, 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

	ANBAX	BFMSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.54	2.20	-1.66
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.16	0.89	-1.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	1.09	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	1.60	-1.21

Drawdowns

ANBAX vs. BFMSX - Drawdown Comparison

The maximum ANBAX drawdown since its inception was -19.33%, which is greater than BFMSX's maximum drawdown of -12.70%. Use the drawdown chart below to compare losses from any high point for ANBAX and BFMSX.

Drawdown Indicators

	ANBAX	BFMSX	Difference
Max Drawdown Largest peak-to-trough decline	-19.33%	-12.70%	-6.63%
Max Drawdown (1Y) Largest decline over 1 year	-3.96%	-1.52%	-2.44%
Max Drawdown (3Y) Largest decline over 3 years	-7.21%	-1.52%	-5.69%
Max Drawdown (5Y) Largest decline over 5 years	-19.33%	-7.96%	-11.37%
Max Drawdown (10Y) Largest decline over 10 years	—	-7.96%	—
Current Drawdown Current decline from peak	-7.70%	0.00%	-7.70%
Average Drawdown Average peak-to-trough decline	-5.69%	-0.82%	-4.87%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.32%	0.33%	+0.99%

Volatility

ANBAX vs. BFMSX - Volatility Comparison

American Funds Strategic Bond Fund (ANBAX) has a higher volatility of 1.53% compared to BlackRock Low Duration Bond Portfolio (BFMSX) at 0.68%. This indicates that ANBAX's price experiences larger fluctuations and is considered to be riskier than BFMSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ANBAX	BFMSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.53%	0.68%	+0.85%
Volatility (6M) Calculated over the trailing 6-month period	3.04%	1.70%	+1.34%
Volatility (1Y) Calculated over the trailing 1-year period	4.33%	2.12%	+2.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.31%	2.35%	+3.96%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.41%	2.11%	+3.30%

ANBAX vs. BFMSX - Expense Ratio Comparison

ANBAX has a 0.71% expense ratio, which is higher than BFMSX's 0.41% expense ratio.

Dividends

ANBAX vs. BFMSX - Dividend Comparison

ANBAX's dividend yield for the trailing twelve months is around 3.00%, less than BFMSX's 4.66% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANBAX American Funds Strategic Bond Fund	3.00%	2.78%	3.07%	2.91%	5.31%	1.74%	3.87%	3.09%	3.51%	1.76%	0.00%	0.00%
BFMSX BlackRock Low Duration Bond Portfolio	4.66%	4.56%	4.14%	3.34%	2.67%	1.23%	2.04%	2.63%	2.51%	2.17%	1.76%	1.87%

Frequently Asked Questions

Can I hold both ANBAX and BFMSX in my portfolio?

ANBAX and BFMSX have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ANBAX or BFMSX?

ANBAX has higher volatility (1.53%) compared to BFMSX (0.68%). In terms of maximum drawdown, ANBAX dropped -19.33% vs BFMSX's -12.70%.

Which has better risk-adjusted returns?

BFMSX currently has the higher Sharpe Ratio (2.20 vs 0.54), 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.