MBSD vs. SECU

Last updated Apr 1, 2026

Compare and contrast key facts about FlexShares Disciplined Duration MBS Index Fund (MBSD) and iShares Securitized Income Active ETF (SECU).

MBSD and SECU are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. MBSD is a passively managed fund by Northern Trust that tracks the performance of the ICE BofA Constrained Duration US Mortgage Backed Securities. It was launched on Sep 4, 2014. SECU is an actively managed fund by iShares. It was launched on Jan 26, 2026.

Performance

MBSD vs. SECU - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FlexShares Disciplined Duration MBS Index Fund (MBSD) and iShares Securitized Income Active ETF (SECU). The values are adjusted to include any dividend payments, if applicable.

MBSD vs. SECU - Yearly Performance Comparison

	2026 (YTD)
MBSD FlexShares Disciplined Duration MBS Index Fund	-0.04%
SECU iShares Securitized Income Active ETF	0.26%

Returns By Period

MBSD

• 1D: 0.32%
• 1M: -1.34%
• YTD: 0.27%
• 6M: 1.61%
• 1Y: 4.63%
• 3Y*: 4.05%
• 5Y*: 0.52%
• 10Y*: 1.48%

SECU

• 1D: 0.23%
• 1M: -1.16%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MBSD vs. SECU - Expense Ratio Comparison

MBSD has a 0.20% expense ratio, which is lower than SECU's 0.40% expense ratio.

SECU

iShares Securitized Income Active ETF

MBSD

FlexShares Disciplined Duration MBS Index Fund

Return for Risk

MBSD vs. SECU — Risk / Return Rank

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

MBSD

MBSD Risk / Return Rank: 66
MBSD Sharpe Ratio Rank: 68
MBSD Sortino Ratio Rank: 69
MBSD Omega Ratio Rank: 59
MBSD Calmar Ratio Rank: 77
MBSD Martin Ratio Rank: 56

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.

MBSD vs. SECU - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FlexShares Disciplined Duration MBS Index Fund (MBSD) and iShares Securitized Income Active ETF (SECU). 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.

	MBSD	SECU	Difference
Sharpe ratio Return per unit of total volatility	1.18	—	—
Sortino ratio Return per unit of downside risk	1.71	—	—
Omega ratio Gain probability vs. loss probability	1.21	—	—
Calmar ratio Return relative to maximum drawdown	2.05	—	—
Martin ratio Return relative to average drawdown	5.38	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	MBSD	SECU	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.18	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.10	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.35	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	0.40	-0.02

Correlation

The correlation between MBSD and SECU is 0.25, 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

MBSD vs. SECU - Dividend Comparison

MBSD's dividend yield for the trailing twelve months is around 4.25%, more than SECU's 0.72% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MBSD FlexShares Disciplined Duration MBS Index Fund	4.25%	4.23%	3.91%	3.39%	3.03%	2.41%	2.78%	3.42%	3.22%	3.30%	3.02%	3.46%
SECU iShares Securitized Income Active ETF	0.72%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

MBSD vs. SECU - Drawdown Comparison

The maximum MBSD drawdown since its inception was -14.36%, which is greater than SECU's maximum drawdown of -1.76%. Use the drawdown chart below to compare losses from any high point for MBSD and SECU.

Drawdown Indicators

	MBSD	SECU	Difference
Max Drawdown Largest peak-to-trough decline	-14.36%	-1.76%	-12.60%
Max Drawdown (1Y) Largest decline over 1 year	-2.22%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-14.10%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-14.36%	—	—
Current Drawdown Current decline from peak	-1.34%	-1.16%	-0.18%
Average Drawdown Average peak-to-trough decline	-2.84%	-0.62%	-2.22%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.85%	—	—

Volatility

Volatility by Period

	MBSD	SECU	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.48%	—	—
Volatility (6M) Calculated over the trailing 6-month period	2.28%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	3.93%	3.68%	+0.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.13%	3.68%	+1.45%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.25%	3.68%	+0.57%