NSCI vs. MBB
NSCI (Nuveen Securitized Income ETF) and MBB (iShares MBS Bond ETF) are both Mortgage Backed Securities funds. NSCI is actively managed, while MBB is passively managed. At a 0.49 correlation, their price movements are largely independent. NSCI charges 0.38%/yr vs 0.06%/yr for MBB.
Performance
NSCI vs. MBB - Performance Comparison
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Returns By Period
In the year-to-date period, NSCI achieves a 2.21% return, which is significantly higher than MBB's 1.45% return.
NSCI
- 1D
- 0.04%
- 1M
- 0.47%
- YTD
- 2.21%
- 6M
- 2.31%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
MBB
- 1D
- 0.01%
- 1M
- 0.94%
- YTD
- 1.45%
- 6M
- 1.30%
- 1Y
- 5.48%
- 3Y*
- 4.56%
- 5Y*
- 0.57%
- 10Y*
- 1.35%
NSCI vs. MBB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
NSCI Nuveen Securitized Income ETF | 2.21% | 1.66% |
MBB iShares MBS Bond ETF | 1.45% | 1.34% |
Correlation
The correlation between NSCI and MBB is 0.49, 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 | 0.49 |
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Return for Risk
NSCI vs. MBB — Risk / Return Rank
NSCI
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
MBB
NSCI vs. MBB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Nuveen Securitized Income ETF (NSCI) and iShares MBS Bond ETF (MBB). 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.
| NSCI | MBB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | — | 1.22 | — |
| Calmar ratioReturn relative to maximum drawdown | — | 1.87 | — |
| Martin ratioReturn relative to average drawdown | — | 5.82 | — |
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Drawdowns
NSCI vs. MBB - Drawdown Comparison
The maximum NSCI drawdown since its inception was -1.10%, smaller than the maximum MBB drawdown of -17.64%. Use the drawdown chart below to compare losses from any high point for NSCI and MBB.
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Drawdown Indicators
| NSCI | MBB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -1.10% | -17.64% | +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 | 0.00% | -0.67% | +0.67% |
Average DrawdownAverage peak-to-trough decline | -0.17% | -2.34% | +2.17% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 0.94% | — |
Volatility
NSCI vs. MBB - Volatility Comparison
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Volatility by Period
| NSCI | MBB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 1.31% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 3.35% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 1.30% | 4.45% | -3.15% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 1.30% | 6.83% | -5.53% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.30% | 5.32% | -4.02% |
NSCI vs. MBB - Expense Ratio Comparison
NSCI has a 0.38% expense ratio, which is higher than MBB's 0.06% expense ratio.
Dividends
NSCI vs. MBB - Dividend Comparison
NSCI's dividend yield for the trailing twelve months is around 3.04%, less than MBB's 4.24% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MBB iShares MBS Bond ETF | 4.24% | 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
NSCI and MBB have a correlation of 0.49, 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 4.24%, compared with 3.04% for NSCI.
They also come from different issuers: Nuveen and iShares. Their fees differ too: 0.38% for NSCI and 0.06% for MBB.
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