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iShares MBS ETF (MBB)
USD93.26
-0.46 (-0.49%)
NASDAQ USD US Fixed Income
NAV
USD 93.73
-0.50% vs NAV
as of 2026-07-13
AUM
USD 39.27B
TER
0.04%
Yield (TTM)
4.32%
Distribution
Distributing · Monthly
52-week range
92.46 – 96.91
Holdings
11,178
Issuer
IShares
About this ETF
The iShares MBS ETF, known by its symbol MBB, is structured to mirror the financial performance of a specific index. This index is made up of premium, mortgage-backed pass-through securities that have been either provided or secured by agencies of the United States government.
ISIN
US4642885887
Issuer
IShares
Domicile
US
Inception
2007-03-12
Asset class
Fixed Income
Price
Top 10 holdings
| BLACKROCK CASH CL INST SL AGENCY | 7.13% |
| FHLMC 30YR UMBS SUPER 2.00% 05/01/2051 | 1.01% |
| GNMA2 30YR TBA(REG C) 5.50% 07/20/2026 | 0.98% |
| UMBS 30YR TBA(REG A) 5.50% 08/13/2026 | 0.98% |
| UMBS 30YR TBA(REG A) 5.00% 08/13/2026 | 0.89% |
| GNMA2 30YR TBA(REG C) 5.00% 07/20/2026 | 0.86% |
| GNMA2 30YR 5.00% 11/20/2054 | 0.53% |
| GNMA2 30YR 2.00% 10/20/2051 | 0.52% |
| GNMA2 30YR 2.00% 12/20/2051 | 0.51% |
| FNMA 30YR UMBS 2.00% 12/01/2051 | 0.50% |
Sector mix
Price chart
USD93.26
-0.46 (-0.49%)
Loading historical data…
Returns
| 1 month | -0.69% |
| 3 months | -1.80% |
| 6 months | -2.07% |
| Year to date | -2.06% |
| 1 year | +0.02% |
| 3 years (ann.) | +0.60% |
| 5 years (ann.) | -2.92% |
| 10 years (ann.) | -1.63% |
Risk profile
| Volatility (1y, ann.) | 4.65% |
| Sharpe (1y) | 0.03 |
| Sharpe (3y) | 0.13 |
| Sortino (1y) | 0.04 |
| Max drawdown (1y) | -3.95% |
| Max drawdown (5y) | -21.10% |
| Max drawdown (full) | -22.85% |
| Beta vs S&P 500 (1y) | 0.12 |
| Correlation vs S&P 500 (1y) | 0.31 |
Technical outlook as of 2026-07-13
Day Score (bias 0-100, not a probability)
20
P(gain) 22 sessions — probability
47%
VaR 95% (daily)
-0.56%
CVaR 95% (daily)
-0.85%
GARCH vol forecast (22d)
0.33%
Market regime (Markov)
Lateral
The Monte Carlo cone is drawn on the price chart above (Forecast overlay); RSI, MACD and the rest of the oscillators live in its indicator panels.
Top-10 concentration
13.9%
Effective holdings
173
Disclosed positions
11,178
Full holdings
| Constituent | ISIN | Market value | Weight |
|---|---|---|---|
| Loading… | |||
Sector breakdown
Geographic exposure
Loading map…
Cost vs. peers
MBB
0.04%
Fixed Income median
0.20%
Cheapest in class BKAG
0.00%
Comparison universe: 1,710 funds of the same asset class.
Cost impact calculator
Dividend history
Distributing share class Income is paid out to shareholders.
| Ex-date | Payment | Amount |
|---|---|---|
| 2026-07-01 | 2026-07-07 | USD 0.3373 |
| 2026-06-01 | 2026-06-04 | USD 0.3334 |
| 2026-05-01 | 2026-05-06 | USD 0.3347 |
| 2026-04-01 | 2026-04-07 | USD 0.3330 |
| 2026-03-02 | 2026-03-05 | USD 0.3278 |
| 2026-02-02 | 2026-02-05 | USD 0.3347 |
| 2025-12-19 | 2025-12-24 | USD 0.3341 |
| 2025-12-01 | 2025-12-04 | USD 0.3469 |
| 2025-11-03 | 2025-11-06 | USD 0.3420 |
| 2025-10-01 | 2025-10-06 | USD 0.3363 |
| 2025-09-02 | 2025-09-05 | USD 0.3383 |
| 2025-08-01 | 2025-08-06 | USD 0.3319 |
| 2025-07-01 | 2025-07-07 | USD 0.3322 |
| 2025-06-02 | 2025-06-05 | USD 0.3251 |
| 2025-05-01 | 2025-05-06 | USD 0.3255 |
| 2025-04-01 | 2025-04-04 | USD 0.3309 |
| 2025-03-03 | 2025-03-06 | USD 0.3204 |
| 2025-02-03 | 2025-02-06 | USD 0.3414 |
| 2024-12-18 | 2024-12-23 | USD 0.2944 |
| 2024-12-02 | 2024-12-05 | USD 0.3074 |
| 2024-11-01 | 2024-11-06 | USD 0.3099 |
| 2024-10-01 | 2024-10-04 | USD 0.3113 |
| 2024-09-03 | 2024-09-06 | USD 0.3177 |
| 2024-08-01 | 2024-08-06 | USD 0.3086 |
| 2024-07-01 | 2024-07-05 | USD 0.3053 |
| 2024-06-03 | 2024-06-07 | USD 0.3002 |
| 2024-05-01 | 2024-05-07 | USD 0.2823 |
| 2024-04-01 | 2024-04-05 | USD 0.2827 |
| 2024-03-01 | 2024-03-07 | USD 0.2921 |
| 2024-02-01 | 2024-02-07 | USD 0.2968 |
| 2023-12-01 | 2023-12-07 | USD 0.2804 |
| 2023-11-01 | 2023-11-07 | USD 0.2735 |
| 2023-10-02 | 2023-10-06 | USD 0.2904 |
| 2023-09-01 | 2023-09-08 | USD 0.2640 |
| 2023-08-01 | 2023-08-07 | USD 0.2759 |
| 2023-07-03 | 2023-07-10 | USD 0.2641 |
| 2023-06-01 | 2023-06-07 | USD 0.2693 |
| 2023-05-01 | 2023-05-05 | USD 0.2598 |
| 2023-04-03 | 2023-04-07 | USD 0.2514 |
| 2023-03-01 | 2023-03-07 | USD 0.2505 |
ESG profile
No ESG estimate available: none of the scored universe overlaps this portfolio (typical for bond, commodity or synthetic funds).
Scored coverage: 0.0% of the portfolio by weight.
Similar ETFs
| Fund | TER | AUM (USD) | Yield (TTM) | Return 1y | Sharpe 1y |
|---|---|---|---|---|---|
| Vanguard Total Bond Market ETF BND | 0.03% | 394.40B | 4.01% | -0.82% | -0.19 |
| iShares Core U.S. Aggregate Bond ETF AGG | 0.03% | 138.36B | 4.03% | -0.76% | -0.17 |
| Vanguard Total International Bond ETF BNDX | 0.07% | 122.00B | 4.52% | -2.72% | -0.64 |
| iShares 0-3 Month Treasury Bond ETF SGOV | 0.09% | 97.69B | 3.80% | +0.05% | 0.05 |
| Vanguard Short-Term Inflation-Protected Securities ETF VTIP | 0.03% | 70.50B | 4.16% | -0.54% | -0.18 |
| Vanguard Short-Term Bond ETF BSV | 0.03% | 70.40B | 4.02% | -1.02% | -0.48 |
| Vanguard Intermediate-Term Corporate Bond ETF VCIT | 0.03% | 68.70B | 4.86% | -1.04% | -0.22 |
| Vanguard Intermediate-Term Bond ETF BIV | 0.03% | 52.20B | 4.27% | -1.28% | -0.28 |
| Vanguard Short-Term Corporate Bond ETF VCSH | 0.03% | 50.50B | 4.47% | -0.85% | -0.36 |
| Vanguard Intermediate-Term Treasury ETF VGIT | 0.03% | 49.50B | 3.89% | -1.50% | -0.41 |
Cheaper alternatives
No fund of the class reaches 60% portfolio overlap — showing the cheapest funds of the class instead.
| Fund | TER | AUM (USD) | Overlap |
|---|---|---|---|
| BNY Mellon Core Bond ETF BKAG | 0.00% | 2.15B | 0.0% |
| Vanguard Short-Term Inflation-Protected Securities ETF VTIP | 0.03% | 70.50B | 0.0% |
| Vanguard Intermediate-Term Treasury ETF VGIT | 0.03% | 49.50B | 0.0% |
| Vanguard Intermediate-Term Corporate Bond ETF VCIT | 0.03% | 68.70B | 0.0% |
| Vanguard Intermediate-Term Bond ETF BIV | 0.03% | 52.20B | 0.0% |
