MBB vs. NSCI
MBB (iShares MBS Bond ETF) and NSCI (Nuveen Securitized Income ETF) are both Mortgage Backed Securities funds. MBB is passively managed, while NSCI is actively managed. At a 0.48 correlation, their price movements are largely independent. MBB charges 0.06%/yr vs 0.38%/yr for NSCI.
Performance
MBB vs. NSCI - Performance Comparison
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Returns By Period
In the year-to-date period, MBB achieves a 0.82% return, which is significantly lower than NSCI's 1.96% return.
MBB
- 1D
- 0.10%
- 1M
- 0.63%
- YTD
- 0.82%
- 6M
- 0.92%
- 1Y
- 5.79%
- 3Y*
- 4.35%
- 5Y*
- 0.43%
- 10Y*
- 1.30%
NSCI
- 1D
- 0.04%
- 1M
- 0.45%
- YTD
- 1.96%
- 6M
- 2.17%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
MBB vs. NSCI - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
MBB iShares MBS Bond ETF | 0.82% | 1.34% |
NSCI Nuveen Securitized Income ETF | 1.96% | 1.66% |
Correlation
The correlation between MBB and NSCI is 0.48, 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 Sep 24, 2025 | 0.48 |
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Return for Risk
MBB vs. NSCI — Risk / Return Rank
MBB
NSCI
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
MBB vs. NSCI - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares MBS Bond ETF (MBB) and Nuveen Securitized Income ETF (NSCI). 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.
| MBB | NSCI | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | 1.23 | — | — |
| Calmar ratioReturn relative to maximum drawdown | 1.98 | — | — |
| Martin ratioReturn relative to average drawdown | 6.17 | — | — |
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Drawdowns
MBB vs. NSCI - Drawdown Comparison
The maximum MBB drawdown since its inception was -17.64%, which is greater than NSCI's maximum drawdown of -1.10%. Use the drawdown chart below to compare losses from any high point for MBB and NSCI.
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Drawdown Indicators
| MBB | NSCI | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -17.64% | -1.10% | -16.54% |
Max Drawdown (1Y)Largest decline over 1 year | -2.94% | — | — |
Max Drawdown (3Y)Largest decline over 3 years | -7.68% | — | — |
Max Drawdown (5Y)Largest decline over 5 years | -17.19% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -17.64% | — | — |
Current DrawdownCurrent decline from peak | -1.28% | -0.12% | -1.16% |
Average DrawdownAverage peak-to-trough decline | -2.34% | -0.18% | -2.16% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.94% | — | — |
Volatility
MBB vs. NSCI - Volatility Comparison
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Volatility by Period
| MBB | NSCI | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.27% | — | — |
Volatility (6M)Calculated over the trailing 6-month period | 3.32% | — | — |
Volatility (1Y)Calculated over the trailing 1-year period | 4.46% | 1.30% | +3.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.83% | 1.30% | +5.53% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.32% | 1.30% | +4.02% |
MBB vs. NSCI - Expense Ratio Comparison
MBB has a 0.06% expense ratio, which is lower than NSCI's 0.38% expense ratio.
Dividends
MBB vs. NSCI - Dividend Comparison
MBB's dividend yield for the trailing twelve months is around 4.27%, more than NSCI's 3.04% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MBB iShares MBS Bond ETF | 4.27% | 4.21% | 3.94% | 3.40% | 2.31% | 1.05% | 2.10% | 2.77% | 2.64% | 2.23% | 2.58% | 2.66% |
NSCI Nuveen Securitized Income ETF | 3.04% | 1.09% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
MBB and NSCI have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, MBB is cheaper at 0.06% per year. The better choice depends on whether you care most about return, fees, risk, or income.
MBB is cheaper with a 0.06% expense ratio, compared with 0.38% for NSCI.
MBB has the higher dividend yield at 4.27%, compared with 3.04% for NSCI.
They also come from different issuers: iShares and Nuveen. Their fees differ too: 0.06% for MBB and 0.38% for NSCI.
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