CMBS vs. ASEC
CMBS (iShares CMBS ETF) and ASEC (American Century Securitized Credit ETF) are both Mortgage Backed Securities funds. CMBS is passively managed, while ASEC is actively managed. At a 0.30 correlation, their price movements are largely independent. CMBS charges 0.25%/yr vs 0.29%/yr for ASEC.
Performance
CMBS vs. ASEC - Performance Comparison
Loading charts...
Returns By Period
CMBS
- 1D
- -0.08%
- 1M
- 0.04%
- 6M
- 0.24%
- YTD
- 0.28%
- 1Y
- 3.99%
- 3Y*
- 5.15%
- 5Y*
- 0.69%
- 10Y*
- 1.97%
ASEC
- 1D
- -0.08%
- 1M
- 0.01%
- 6M
- —
- YTD
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
CMBS vs. ASEC - Yearly Performance Comparison
| 2026 (YTD) | |
|---|---|
CMBS iShares CMBS ETF | -0.04% |
ASEC American Century Securitized Credit ETF | -0.17% |
Correlation
The correlation between CMBS and ASEC is 0.30, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since May 28, 2026 | 0.30 |
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
CMBS vs. ASEC — Risk / Return Rank
CMBS
ASEC
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
CMBS vs. ASEC - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares CMBS ETF (CMBS) 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.
| CMBS | ASEC | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.19 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 1.64 | — | — |
| Martin ratioReturn relative to average drawdown | 4.06 | — | — |
Loading charts...
Drawdowns
CMBS vs. ASEC - Drawdown Comparison
The maximum CMBS drawdown since its inception was -15.87%, which is greater than ASEC's maximum drawdown of -0.46%. Use the drawdown chart below to compare losses from any high point for CMBS and ASEC.
Loading charts...
Drawdown Indicators
| CMBS | ASEC | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -15.87% | -0.46% | -15.41% |
Max Drawdown (1Y)Largest decline over 1 year | -2.44% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -3.25% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -15.87% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -15.87% | — | — |
Current DrawdownCurrent decline from peak | -1.63% | -0.27% | -1.36% |
Average DrawdownAverage peak-to-trough decline | -2.94% | -0.19% | -2.75% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.98% | — | — |
Volatility
CMBS vs. ASEC - Volatility Comparison
Loading charts...
Volatility by Period
| CMBS | ASEC | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.97% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 2.82% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 3.64% | 1.43% | +2.21% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.32% | 1.43% | +3.89% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.76% | 1.43% | +4.33% |
CMBS vs. ASEC - Expense Ratio Comparison
CMBS has a 0.25% expense ratio, which is lower than ASEC's 0.29% expense ratio.
Dividends
CMBS vs. ASEC - Dividend Comparison
CMBS's dividend yield for the trailing twelve months is around 3.61%, 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% |
CMBS iShares CMBS ETF | 3.61% | 3.45% | 3.31% | 2.97% | 2.65% | 2.46% | 2.83% | 2.74% | 2.70% | 2.50% | 2.29% | 2.31% |
Frequently Asked Questions
CMBS and ASEC have a correlation of 0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, CMBS is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.
CMBS is cheaper with a 0.25% expense ratio, compared with 0.29% for ASEC.
CMBS has the higher dividend yield at 3.61%, compared with 0.46% for ASEC.
They also come from different issuers: iShares and American Century. Their fees differ too: 0.25% for CMBS and 0.29% for ASEC.
Find the right allocation for CMBS and ASEC
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer