MBSD vs. ASEC
MBSD (FlexShares Disciplined Duration MBS Index Fund) and ASEC (American Century Securitized Credit ETF) are both Mortgage Backed Securities funds. MBSD is passively managed, while ASEC is actively managed. At a 0.02 correlation, their price movements are largely independent. MBSD charges 0.20%/yr vs 0.29%/yr for ASEC.
Performance
MBSD vs. ASEC - Performance Comparison
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Returns By Period
MBSD
- 1D
- -0.33%
- 1M
- -0.53%
- 6M
- -0.32%
- YTD
- 0.07%
- 1Y
- 3.88%
- 3Y*
- 4.06%
- 5Y*
- 0.56%
- 10Y*
- 1.32%
ASEC
- 1D
- -0.04%
- 1M
- 0.09%
- 6M
- —
- YTD
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
MBSD vs. ASEC - Yearly Performance Comparison
| 2026 (YTD) | |
|---|---|
MBSD FlexShares Disciplined Duration MBS Index Fund | -0.33% |
ASEC American Century Securitized Credit ETF | -0.09% |
Correlation
The correlation between MBSD and ASEC is 0.02, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since May 28, 2026 | 0.02 |
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Return for Risk
MBSD vs. ASEC — Risk / Return Rank
MBSD
ASEC
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
MBSD vs. ASEC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for FlexShares Disciplined Duration MBS Index Fund (MBSD) and American Century Securitized Credit ETF (ASEC). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| MBSD | ASEC | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.20 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 1.79 | — | — |
| Martin ratioReturn relative to average drawdown | 5.24 | — | — |
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Drawdowns
MBSD vs. ASEC - Drawdown Comparison
The maximum MBSD drawdown since its inception was -14.36%, which is greater than ASEC's maximum drawdown of -0.46%. Use the drawdown chart below to compare losses from any high point for MBSD and ASEC.
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Drawdown Indicators
| MBSD | ASEC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -14.36% | -0.46% | -13.90% |
Max Drawdown (1Y)Largest decline over 1 year | -2.17% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -4.59% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -14.10% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -14.36% | — | — |
Current DrawdownCurrent decline from peak | -1.54% | -0.19% | -1.35% |
Average DrawdownAverage peak-to-trough decline | -2.80% | -0.19% | -2.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.74% | — | — |
Volatility
MBSD vs. ASEC - Volatility Comparison
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Volatility by Period
| MBSD | ASEC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.03% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 2.57% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 3.45% | 1.44% | +2.01% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.17% | 1.44% | +3.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.26% | 1.44% | +2.82% |
MBSD vs. ASEC - Expense Ratio Comparison
MBSD has a 0.20% expense ratio, which is lower than ASEC's 0.29% expense ratio.
Dividends
MBSD vs. ASEC - Dividend Comparison
MBSD's dividend yield for the trailing twelve months is around 4.20%, more than ASEC's 0.46% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ASEC American Century Securitized Credit ETF | 0.46% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
MBSD FlexShares Disciplined Duration MBS Index Fund | 4.20% | 4.23% | 3.91% | 3.39% | 3.03% | 2.41% | 2.78% | 3.42% | 3.22% | 3.30% | 3.02% | 3.46% |
Frequently Asked Questions
MBSD and ASEC have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, MBSD is cheaper at 0.20% per year. The better choice depends on whether you care most about return, fees, risk, or income.
MBSD is cheaper with a 0.20% expense ratio, compared with 0.29% for ASEC.
MBSD has the higher dividend yield at 4.20%, compared with 0.46% for ASEC.
They also come from different issuers: Northern Trust and American Century. Their fees differ too: 0.20% for MBSD and 0.29% for ASEC.
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