BYLD vs. MAMB

Last updated Jun 3, 2026

BYLD (iShares Yield Optimized Bond ETF) and MAMB (Monarch Ambassador Income ETF) are both Intermediate Core-Plus Bond funds - BYLD tracks the Morningstar U.S. Bond Market Yield-Optimized Index while MAMB tracks the Monarch Ambassador Income Index. Both are passively managed. Over the past 5 years, BYLD returned 2.32%/yr vs 0.85%/yr for MAMB. Their correlation of 0.80 suggests significant overlap in exposure. BYLD charges 0.17%/yr vs 1.49%/yr for MAMB.

Performance

BYLD vs. MAMB - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Yield Optimized Bond ETF (BYLD) and Monarch Ambassador Income ETF (MAMB). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BYLD achieves a 1.41% return, which is significantly lower than MAMB's 2.27% return.

BYLD

• 1D: 0.08%
• 1M: 0.49%
• YTD: 1.41%
• 6M: 1.62%
• 1Y: 7.32%
• 3Y*: 6.56%
• 5Y*: 2.32%
• 10Y*: 3.03%

MAMB

• 1D: 0.15%
• 1M: 0.52%
• YTD: 2.27%
• 6M: 2.40%
• 1Y: 9.58%
• 3Y*: 5.46%
• 5Y*: 0.85%
• 10Y*: —

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

BYLD vs. MAMB - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
BYLD iShares Yield Optimized Bond ETF	1.41%	8.41%	4.17%	8.30%	-10.33%	1.57%
MAMB Monarch Ambassador Income ETF	2.27%	10.69%	1.32%	4.90%	-13.02%	1.46%

Correlation

The correlation between BYLD and MAMB 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	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.81
Correlation (All Time) Calculated using the full available price history since Mar 25, 2021	0.80

The correlation between BYLD and MAMB shifts across timeframes, from 0.67 (1 year) to 0.81 (3 years), reflecting how their relationship changes across market environments.

BYLD vs. MAMB - Sectors Allocation Comparison

Sectors	BYLD	MAMB
Energy	99.2%	-
Real Estate	0.8%	-
Basic Materials	-	-
Communication Services	-	0.2%
Consumer Cyclical	-	1.1%
Consumer Defensive	-	-
Financial Services	-	100.0%
Healthcare	-	19.5%
Industrials	-	8.5%
Technology	-	-
Utilities	-	70.8%

Return for Risk

BYLD vs. MAMB — Risk / Return Rank

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

BYLD

BYLD Risk / Return Rank: 57
BYLD Sharpe Ratio Rank: 56
BYLD Sortino Ratio Rank: 61
BYLD Omega Ratio Rank: 59
BYLD Calmar Ratio Rank: 52
BYLD Martin Ratio Rank: 60

MAMB

MAMB Risk / Return Rank: 48
MAMB Sharpe Ratio Rank: 48
MAMB Sortino Ratio Rank: 48
MAMB Omega Ratio Rank: 47
MAMB Calmar Ratio Rank: 53
MAMB Martin Ratio Rank: 45

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.

BYLD vs. MAMB - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Yield Optimized Bond ETF (BYLD) and Monarch Ambassador Income ETF (MAMB). 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.

	BYLD	MAMB	Difference
Sharpe ratio Return per unit of total volatility	1.93	1.70	+0.23
Sortino ratio Return per unit of downside risk	2.88	2.38	+0.50
Omega ratio Gain probability vs. loss probability	1.36	1.30	+0.06
Calmar ratio Return relative to maximum drawdown	2.64	2.68	-0.04
Martin ratio Return relative to average drawdown	10.73	7.61	+3.12
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BYLD vs. MAMB - Sharpe Ratio Comparison

The current BYLD Sharpe Ratio is 1.93, which is comparable to the MAMB Sharpe Ratio of 1.70. The chart below compares the historical Sharpe Ratios of BYLD and MAMB, 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

	BYLD	MAMB	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.93	1.70	+0.23
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.45	0.12	+0.33
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.56	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.57	0.17	+0.40

Drawdowns

BYLD vs. MAMB - Drawdown Comparison

The maximum BYLD drawdown since its inception was -14.75%, smaller than the maximum MAMB drawdown of -19.33%. Use the drawdown chart below to compare losses from any high point for BYLD and MAMB.

Drawdown Indicators

	BYLD	MAMB	Difference
Max Drawdown Largest peak-to-trough decline	-14.75%	-19.33%	+4.58%
Max Drawdown (1Y) Largest decline over 1 year	-2.71%	-3.55%	+0.84%
Max Drawdown (3Y) Largest decline over 3 years	-3.94%	-7.38%	+3.44%
Max Drawdown (5Y) Largest decline over 5 years	-14.65%	-19.33%	+4.68%
Max Drawdown (10Y) Largest decline over 10 years	-14.75%	—	—
Current Drawdown Current decline from peak	-0.16%	-1.40%	+1.24%
Average Drawdown Average peak-to-trough decline	-2.51%	-7.51%	+5.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.67%	1.25%	-0.58%

Volatility

BYLD vs. MAMB - Volatility Comparison

The current volatility for iShares Yield Optimized Bond ETF (BYLD) is 1.44%, while Monarch Ambassador Income ETF (MAMB) has a volatility of 1.74%. This indicates that BYLD experiences smaller price fluctuations and is considered to be less risky than MAMB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BYLD	MAMB	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.44%	1.74%	-0.30%
Volatility (6M) Calculated over the trailing 6-month period	2.96%	4.23%	-1.27%
Volatility (1Y) Calculated over the trailing 1-year period	3.82%	5.67%	-1.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.20%	6.99%	-1.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.43%	6.91%	-1.48%

BYLD vs. MAMB - Expense Ratio Comparison

BYLD has a 0.17% expense ratio, which is lower than MAMB's 1.49% expense ratio.

Dividends

BYLD vs. MAMB - Dividend Comparison

BYLD's dividend yield for the trailing twelve months is around 5.80%, more than MAMB's 2.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BYLD iShares Yield Optimized Bond ETF	5.35%	5.32%	5.31%	4.45%	3.39%	2.18%	3.41%	3.67%	4.22%	3.22%	3.14%	3.37%
MAMB Monarch Ambassador Income ETF	2.43%	2.47%	2.11%	1.73%	0.92%	0.56%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BYLD and MAMB in my portfolio?

BYLD and MAMB 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, BYLD or MAMB?

MAMB has higher volatility (1.74%) compared to BYLD (1.44%). In terms of maximum drawdown, BYLD dropped -14.75% vs MAMB's -19.33%.

Which ETF is better, BYLD or MAMB?

On 5-year performance, BYLD leads with 2.32% vs 0.85% for MAMB. On fees, BYLD is cheaper at 0.17% per year. On volatility, BYLD has been the lower-risk option at 1.44%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, BYLD or MAMB?

Over the 5-year period, BYLD has performed better with a 2.32% return vs 0.85%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, BYLD or MAMB?

BYLD is cheaper with a 0.17% expense ratio, compared with 1.49% for MAMB.

Which ETF pays a higher dividend yield, BYLD or MAMB?

BYLD has the higher dividend yield at 5.80%, compared with 2.43% for MAMB.

What is the main difference between BYLD and MAMB?

BYLD tracks Morningstar U.S. Bond Market Yield-Optimized Index, while MAMB tracks Monarch Ambassador Income Index. They also come from different issuers: iShares and Monarch. Their fees differ too: 0.17% for BYLD and 1.49% for MAMB.

Which has better risk-adjusted returns?

BYLD currently has the higher Sharpe Ratio (1.93 vs 1.70), 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.