MBBA iShares Mortgage-Backed Securities Active ETF
Quote as of Aug 26, 2026 17:20 UTC · Market data delayed approximately 15–20 minutes unless otherwise indicated.
| Previous Close | 49.17 | Day Range | 48.95 – 49.18 |
| 52-Week Range | 48.61 – 54.68 | Volume | 3.75K |
| Avg Volume | 14.90K | AUM | $157.7M (Aug 26, 2026) |
| Expense Ratio | 0.25% | Yield (TTM) | 2.62% |
| NAV | 48.91 | Premium/Discount | +0.38% indicative |
| Inception | May 18, 1998 | Holdings | 505 |
| Issuer | iShares | Exchange | CBOE |
| Category | International Bonds | Index Tracked | Not stated in source data |
| CUSIP | 092528793 | ISIN | US0925287932 |
| Management | Actively managed (per issuer description) | ||
About this ETF
MBBA is an actively managed ETF that aims to maximize total return, consistent with income generation and prudent management. The fund invests primarily in mortgage-backed securities (MBS) and derivatives offering similar exposure or related market risks. Holdings may include Government National Mortgage Association (GNMA), Fannie Mae, Freddie Mac, other US government securities, and participation in to be announced (TBA) MBS transactions. The fund targets an average portfolio duration close (plus or minus one year) to its benchmark, the Bloomberg U.S. MBS Index. It may invest in residential/commercial MBS and other asset-backed securities, use options, futures, swaps, and interest rate transactions for exposure, risk mitigation, or return enhancement. As an actively managed ETF, the fund manager has full discretion to adjust the portfolio at any time.
Description from the fund data provider · profile as of Aug 26, 2026.
Price Chart
Daily closing prices (price return, not total return). Comparison lines are normalized to percent change from the range start. Source: Financial Modeling Prep.
Performance
| 1M | 3M | 6M | YTD | 1Y | 3Y* | 5Y* | 10Y* | Incep.* | |
|---|---|---|---|---|---|---|---|---|---|
| Price return | +0.56% | -0.84% | -3.09% | — | — | — | — | — | -1.81% |
| Total return | +0.97% | +0.31% | -0.59% | — | — | — | — | — | +0.74% |
* Annualized. Total return uses the dividend-adjusted price series (distributions reinvested); price return uses unadjusted closes. Performance through Aug 25, 2026. Past performance does not guarantee future results.
Fees
| Net expense ratio | 0.25% | Annual cost of a $10,000 investment | $25.00 |
Illustrative calculation only: expense ratio × $10,000. It excludes trading costs, bid/ask spreads, taxes and changes in investment value. Gross vs. net expense details and any fee waivers are in the prospectus.
Holdings
Holdings as of Aug 22, 2026 — portfolio reporting date from the data provider; holdings are not live positions. 533 rows in database.
| # | Holding | Ticker | Weight | Shares | Market Value |
|---|---|---|---|---|---|
| 1 | UMBS 30YR TBA(REG A) 5.50% 09/14/2026 (UM30) | — | 12.31% | 19.55M | $19.5M |
| 2 | UMBS 30YR TBA(REG A) 2.00% 09/14/2026 (UM30) | — | 11.44% | 23.09M | $18.1M |
| 3 | UMBS 30YR TBA(REG A) 2.50% 09/14/2026 (UM30) | — | 9.78% | 18.85M | $15.5M |
| 4 | FNMA 30YR UMBS 5.00% 05/01/2056 (FNMA6053) | — | 8.93% | 14.51M | $14.1M |
| 5 | GNMA2 30YR TBA(REG C) 2.00% 09/21/2026 (G230J) | — | 6.84% | 13.42M | $10.8M |
| 6 | FHSTR_432 GA 4.00% 04/25/2027 (FHSTR_432-GA) | — | 6.41% | 10.15M | $10.1M |
| 7 | FHLMC 30YR UMBS 5.00% 05/01/2056 (FRRQ0118) | — | 4.88% | 7.93M | $7.7M |
| 8 | BLACKROCK LIQ FUND T-FD-IN | — | 4.35% | 6.87M | $6.9M |
| 9 | UMBS 15YR TBA(REG B) 2.00% 09/17/2026 (UM15) | — | 4.30% | 7.47M | $6.8M |
| 10 | FHSTR_454 DA 4.00% 05/25/2027 (FHSTR_454-DA) | — | 3.41% | 5.41M | $5.4M |
| 11 | GNMA2 30YR TBA(REG C) 2.50% 09/21/2026 (G230J) | — | 3.30% | 6.20M | $5.2M |
| 12 | FNMA 30YR UMBS SUPER 3.00% 04/01/2052 (FNFS1538) | — | 2.68% | 4.88M | $4.2M |
| 13 | GNMA2 30YR TBA(REG C) 5.50% 09/21/2026 (G230J) | — | 2.37% | 3.75M | $3.7M |
| 14 | UMBS 30YR TBA(REG A) 3.50% 09/14/2026 (UM30) | — | 2.36% | 4.19M | $3.7M |
| 15 | GNMA2 30YR TBA(REG C) 5.00% 09/21/2026 (G230J) | — | 2.34% | 3.79M | $3.7M |
| 16 | GNMA_15-55 A 5.39% 03/16/2036 (GNMA_15-55-A) | — | 1.83% | 2.83M | $2.9M |
| 17 | FNMA 30YR UMBS SUPER 4.00% 02/01/2050 (FNFS8474) | — | 1.80% | 3.01M | $2.8M |
| 18 | GNMA2 30YR TBA(REG C) 4.50% 09/21/2026 (G230J) | — | 1.73% | 2.89M | $2.7M |
| 19 | UMBS 30YR TBA(REG A) 6.00% 09/14/2026 (UM30) | — | 1.57% | 2.44M | $2.5M |
| 20 | GNMA 30YR PLATINUM 3.50% 02/15/2045 (GN784176) | — | 1.45% | 2.52M | $2.3M |
| 21 | GNMA_20-149H IA 2.50% 10/20/2050… | — | 1.45% | 14.68M | $2.3M |
| 22 | FNMA 30YR UMBS SUPER 4.50% 09/01/2048 (FNFS4974) | — | 1.44% | 2.35M | $2.3M |
| 23 | GNMA2 30YR TBA(REG C) 3.00% 09/21/2026 (G230J) | — | 1.41% | 2.55M | $2.2M |
| 24 | FNMA 30YR UMBS SUPER 3.50% 08/01/2050 (FNFA3656) | — | 1.36% | 2.36M | $2.2M |
| 25 | FHLMC 30YR UMBS SUPER 6.50% 07/01/2054… | — | 1.31% | 1.99M | $2.1M |
Click a ticker to see every ETF that owns it.
Sector Exposure
Geographic Exposure
Country weights as reported by the data provider. Developed/emerging/frontier labels follow the classification on the Methodology page. Currency hedged: No hedging indicated in the fund name.
Distributions
| Yield (TTM) | 2.62% | Paid (last 12 months) | $1.2862 |
| Frequency | Monthly | SEC yield | Not provided by our data source — see the issuer page |
| Last ex-date | Aug 03, 2026 | Last payment | $0.1946 (Aug 06, 2026) |
| Growth 1Y | — | Growth 3Y / 5Y (ann.) | — / — |
| Ex-date | Record | Pay date | Amount |
|---|---|---|---|
| Aug 03, 2026 | Aug 03, 2026 | Aug 06, 2026 | $0.1946 |
| Jul 01, 2026 | Jul 01, 2026 | Jul 07, 2026 | $0.1817 |
| Jun 01, 2026 | Jun 01, 2026 | Jun 04, 2026 | $0.1995 |
| May 01, 2026 | May 01, 2026 | May 06, 2026 | $0.2039 |
| Apr 01, 2026 | Apr 01, 2026 | Apr 07, 2026 | $0.1959 |
| Mar 02, 2026 | Mar 02, 2026 | Mar 05, 2026 | $0.3106 |
Trailing distribution yield = last 12 months of cash ÷ current price. It is NOT the SEC 30-day yield and distributions are not guaranteed to continue. The difference explained →
Risk Statistics
Liquidity
| Volume today | 3.75K | Average volume | 14.90K |
| AUM | $157.7M | Premium/Discount | +0.38% |
| Bid/Ask spread | Not provided by our data source. Check your broker's quote screen; spreads are widest at the open and close. | ||
Premium/discount compares the delayed market price with the last reported NAV — an indicative figure, not the official closing premium/discount. How ETF liquidity works →
Fund Flows (estimated)
| Period | Est. net flow | % of starting AUM | AUM start → end |
|---|---|---|---|
| 1 Day | $318.1K | +0.20% | $157.4M → $157.7M |
| 1 Week | $14.9K | +0.01% | $157.4M → $157.7M |
ETF Explorer estimate: change in reported AUM minus the market-move effect, from our own daily snapshots. Not official issuer creation/redemption data.
Official Fund Resources
External links open the issuer's site or SEC EDGAR in a new tab. The prospectus and official documents are always the authoritative source — review them before investing.
Latest News for MBBA
No articles mention this fund directly in the last 7 days — showing general ETF coverage.
Guided help: AUM is fund size. The expense ratio is the yearly cost baked into returns. NAV is the value of what the fund owns per share; the market price can sit slightly above (premium) or below (discount) it. Total return assumes distributions were reinvested. Every dataset shows its own as-of date because holdings, assets and quotes update on different schedules.