Total Holdings
514
Portfolio diversification across 514 positions
M
MBBA
(BATS)iShares Mortgage-Backed Securities Active ETF
$49.90-- (--)
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MBBA ETF Holdings: iShares Mortgage-Backed Securities Active ETF
Complete portfolio holdings with allocation weights, sector breakdown, and geographic exposure for this Fixed Income ETF. Analyze fund diversification and concentration.
Inception Date
Jan 22, 2026
0 years old
Expense Ratio
0.25%
Annual management fee
Fund Issuer
BlackRock
BATS
Top 17 Holdings by Portfolio Weight
View ticker symbols, company names, asset types, and allocation percentages for each position
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| # | Symbol | Name | Type | Weight |
|---|---|---|---|---|
| 1 | M MUTF:TSTXX | BlackRock Liquidity Funds - T-Fund | Stock | 13.78% |
| 2 | U UM30 | UMBS 30YR TBA(REG A) - 2.0 2026-04-13 | Stock | 12.78% |
| 3 | G G230J | GNMA2 30YR TBA(REG C) - 2.0 2026-04-21 | Stock | 4.99% |
| 4 | U UM15 | UMBS 15YR TBA(REG B) - 2.0 2026-04-16 | Stock | 4.61% |
| 5 | F FNFS1538 | FNMA 30YR UMBS SUPER - 3.0 2052-04-01 | Stock | 3.58% |
| 6 | G GNMA_15-55-A | GNMA_15-55 A - 5.39 2036-03-16 | Stock | 2.44% |
| 7 | G G2CI6134 | GNMA2 30YR - 2.5 2051-11-20 | Stock | 2.19% |
| 8 | F FRSD6472 | FHLMC 30YR UMBS SUPER - 6.5 2054-07-01 | Stock | 2.13% |
| 9 | G GN784176 | GNMA 30YR PLATINUM - 3.5 2045-02-15 | Stock | 2.06% |
| 10 | F FNFS4974 | FNMA 30YR UMBS SUPER - 4.5 2048-09-01 | Stock | 1.91% |
| 11 | G GNMA_20-149H-IA | GNMA_20-149H IA - 2.5 2050-10-20 | Stock | 1.84% |
| 12 | F FNFA3656 | FNMA 30YR UMBS SUPER - 3.5 2050-08-01 | Stock | 1.83% |
| 13 | F FHLMC_5052-KI | FHLMC_5052 KI - 4.0 2050-12-25 | Stock | 1.54% |
| 14 | F FRSL3074 | FHLMC 30YR UMBS SUPER - 6.0 2053-12-01 | Stock | 1.31% |
| 15 | F FNFS8078 | FNMA 30YR UMBS SUPER - 2.0 2052-02-01 | Stock | 1.21% |
| 16 | F FRSL0236 | FHLMC 30YR UMBS SUPER - 5.5 2054-11-01 | Stock | 1.15% |
| 17 | F FNMA4761 | FNMA 30YR UMBS - 5.0 2052-09-01 | Stock | 1.13% |
Frequently Asked Questions About iShares Mortgage-Backed Securities Active ETF Holdings
What are the top holdings in MBBA?
iShares Mortgage-Backed Securities Active ETF (MBBA) holds 514 securities. View the complete list of top holdings sorted by portfolio weight, showing each security's ticker symbol, company name, asset type, and allocation percentage.
How concentrated is MBBA's portfolio?
Portfolio concentration is measured by the weight of top holdings. A concentrated portfolio has fewer large positions with higher individual weights, while a diversified portfolio distributes holdings more evenly. Review MBBA's holdings table to analyze concentration risk.
What is MBBA's sector allocation?
The Sector Allocation chart shows how MBBA distributes investments across different industries like Technology, Healthcare, Financials, and more. This sector exposure helps understand the fund's industry diversification strategy.
What countries does MBBA invest in?
MBBA's geographic exposure is shown in the Countries tab under Portfolio Allocations. This reveals the fund's international diversification and exposure to different regions and global markets.
How diversified is MBBA ETF?
MBBA's diversification can be assessed by reviewing its 514 holdings, sector allocation, and geographic exposure. A well-diversified ETF spreads investments across multiple securities, sectors, and regions to reduce concentration risk.