PRABvsMBBAETF Comparison
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State Street IG Public & Private ABS ETF (PRAB) and iShares Mortgage-Backed Securities Active ETF (MBBA) have similar underlying exposures to countries and sectors. They also belong to the same industry segment: MBS & ABS. PRAB's top 1 sector exposures are Industrials. In contrast, MBBA's top sector exposures are Industrials and Non-Corporate. PRAB is more expensive with a Total Expense Ratio (TER) of 0.39%, versus 0.26% for MBBA. Run a side-by-side ETF comparison of PRAB and MBBA below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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PRAB vs MBBA performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 08/31/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | PRAB MBBA | +0.28%+0.41% | +0.68%-0.81% | n/an/a | n/an/a | n/an/a | n/an/a |
| Flows | PRAB MBBA | -+$5M | -+$35M | -- | -- | -- | -- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | PRAB MBBA | +1.04%+4.76% | n/an/a | n/an/a | n/an/a |
| Max drawdown | PRAB MBBA | -0.16%-2.02% | n/an/a | n/an/a | n/an/a |
| Max drawdown duration | PRAB MBBA | 15d63d | n/an/a | n/an/a | n/an/a |
Trading data
PRAB | MBBA | |
Last sale 8/31/2026 at 1:30 PM | $48.76 | |
| Previous close 08/31/2026 | $48.87 | |
| Consolidated volume 08/31/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
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Main metrics
Last update 8/31/2026 at 1:30 PM
Live
Closed
PRAB | MBBA | |
|---|---|---|
| Last price | – | $48.76 |
| 1D performance | – | -0.22% |
| AuM | $24.84 M | $157.24 M |
| E/R | 0.39% | 0.26% |
Characteristics
PRAB | MBBA | |
|---|---|---|
| Management strategy | Active | Active |
| Provider | State Street Investment Management | iShares |
| Benchmark | - | - |
| N° of holdings | 13 | 25 |
| Asset class | - | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | March 11, 2026 | January 23, 2026 |
| ESG | No | No |
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Exposure
Countries
PRAB
USA
17.91%
Other
82.09%
MBBA
Data will be available soon
Sectors
PRAB
Industrials
17.91%
Other
82.09%
MBBA
Data will be available soon
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Diversification
PRAB
Total weight of top 15 holdings out of 15
36.44%
MBBA
Data will be available soon
Top 15 holdings
Data as of July 31, 2026
PRAB
US02582JKD18
4.10%
US92540FAD24
3.10%
US72585CAD74
2.87%
Navient Student Loan Trust 2021-EA, 0.97% 16dec2069, USD (ABS, A)
2.73%
US8574924663
2.72%
US36268GAE52
2.46%
US038410AD82
2.08%
US344928AF38
2.05%
RCKT Mortgage Trust 2025-CES7, 6.174% 26jul2055, USD (ABS, M1)
2.05%
US69382JAA97
2.05%
US00039RAH84
2.05%
US69490AAD19
2.05%
MF1 2025-FL19, FRN 18may2042, USD (ABS, A)
2.05%
US00501DAD75
2.04%
RCKT Mortgage Trust 2025-CES8, 5.64945% 25aug2055, USD (ABS, A3)
2.04%
MBBA
Data will be available soon
Frequently asked questions about PRAB and MBBA
Which ETF is bigger: PRAB or MBBA?
As of August 31, 2026, PRAB holds $24.84 M in assets under management (AUM), while MBBA manages $157.24 M.
What sectors do the PRAB and MBBA ETFs invest in?
PRAB leans toward sectors like Industrials. Meanwhile, MBBA focuses on Industrials and Non-Corporate.
What are the top holdings of the PRAB ETF and MBBA ETF?
PRAB top holdings include US02582JKD18, US92540FAD24 and US72585CAD74. MBBA holds in its top three: US01F0526800, US01F0206874 and BlackRock Liquidity T-Fund.
Which ETF is more diversified: PRAB or MBBA?
PRAB holds 65 securities with 36.44% of its assets in the top 15. MBBA has 491 securities and a top 15 weight of 89.36%.
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