MBBA vs. ACWI

Last updated Jun 4, 2026

MBBA (iShares Mortgage-Backed Securities Active ETF) and ACWI (iShares MSCI ACWI ETF) are both exchange-traded funds - MBBA is a Mortgage Backed Securities fund actively managed by iShares, while ACWI is a Global Equities fund tracking the MSCI All Country World Index. MBBA is actively managed, while ACWI is passively managed. A 0.54 correlation means they provide meaningful diversification when combined. MBBA charges 0.25%/yr vs 0.32%/yr for ACWI.

Performance

MBBA vs. ACWI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Mortgage-Backed Securities Active ETF (MBBA) and iShares MSCI ACWI ETF (ACWI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MBBA

• 1D: -0.16%
• 1M: 0.53%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

ACWI

• 1D: 0.30%
• 1M: 4.45%
• YTD: 12.47%
• 6M: 13.07%
• 1Y: 29.24%
• 3Y*: 21.38%
• 5Y*: 11.35%
• 10Y*: 12.82%

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

MBBA vs. ACWI - Yearly Performance Comparison

	2026 (YTD)
MBBA iShares Mortgage-Backed Securities Active ETF	0.64%
ACWI iShares MSCI ACWI ETF	9.20%

Correlation

The correlation between MBBA and ACWI is 0.54, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jan 27, 2026	0.54

Return for Risk

MBBA vs. ACWI — Risk / Return Rank

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

ACWI

ACWI Risk / Return Rank: 70
ACWI Sharpe Ratio Rank: 71
ACWI Sortino Ratio Rank: 71
ACWI Omega Ratio Rank: 71
ACWI Calmar Ratio Rank: 62
ACWI Martin Ratio Rank: 73

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.

MBBA vs. ACWI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Mortgage-Backed Securities Active ETF (MBBA) and iShares MSCI ACWI ETF (ACWI). 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	MBBA	ACWI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.30	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.71	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.75	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.43	-0.03

Drawdowns

MBBA vs. ACWI - Drawdown Comparison

The maximum MBBA drawdown since its inception was -2.83%, smaller than the maximum ACWI drawdown of -56.00%. Use the drawdown chart below to compare losses from any high point for MBBA and ACWI.

Drawdown Indicators

	MBBA	ACWI	Difference
Max Drawdown Largest peak-to-trough decline	-2.83%	-56.00%	+53.17%
Max Drawdown (1Y) Largest decline over 1 year	—	-9.73%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-16.55%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-26.42%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.53%	—
Current Drawdown Current decline from peak	-1.17%	-0.53%	-0.64%
Average Drawdown Average peak-to-trough decline	-1.12%	-8.61%	+7.49%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	2.16%	—

Volatility

Volatility by Period

	MBBA	ACWI	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	3.83%	—
Volatility (6M) Calculated over the trailing 6-month period	—	10.30%	—
Volatility (1Y) Calculated over the trailing 1-year period	4.66%	12.79%	-8.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.66%	16.05%	-11.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.66%	17.11%	-12.45%

MBBA vs. ACWI - Expense Ratio Comparison

MBBA has a 0.25% expense ratio, which is lower than ACWI's 0.32% expense ratio.

Dividends

MBBA vs. ACWI - Dividend Comparison

MBBA's dividend yield for the trailing twelve months is around 1.84%, more than ACWI's 1.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACWI iShares MSCI ACWI ETF	1.38%	1.55%	1.70%	1.88%	1.79%	1.71%	1.43%	2.33%	2.18%	1.94%	2.19%	2.56%
MBBA iShares Mortgage-Backed Securities Active ETF	1.84%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MBBA and ACWI in my portfolio?

MBBA and ACWI have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MBBA or ACWI?

On fees, MBBA is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MBBA or ACWI?

MBBA is cheaper with a 0.25% expense ratio, compared with 0.32% for ACWI.

Which ETF pays a higher dividend yield, MBBA or ACWI?

MBBA has the higher dividend yield at 1.84%, compared with 1.38% for ACWI.

What is the main difference between MBBA and ACWI?

MBBA is categorized as Mortgage Backed Securities, while ACWI is Global Equities. Their fees differ too: 0.25% for MBBA and 0.32% for ACWI.