MBSDvsPRABETF Comparison
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Northern Trust Disciplined Duration MBS ETF (MBSD) and State Street IG Public & Private ABS ETF (PRAB) have similar underlying exposures to countries and sectors. They also belong to the same industry segment: MBS & ABS. Both ETFs have the same top 1 sector exposures: Industrials. MBSD is less expensive with a Total Expense Ratio (TER) of 0.21%, versus 0.39% for PRAB. Run a side-by-side ETF comparison of MBSD and PRAB 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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MBSD vs PRAB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/03/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | MBSD PRAB | +0.13%+0.28% | -0.17%+0.78% | +0.14%n/a | +2.24%n/a | +14.18%n/a | +2.30%n/a |
| Flows | MBSD PRAB | -- | -$4M- | -$987K- | +$6M- | +$16M- | -$5M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | MBSD PRAB | +3.15%+1.05% | +2.90%n/a | +4.03%n/a | +4.64%n/a |
| Max drawdown | MBSD PRAB | -1.23%-0.18% | -2.04%n/a | -3.51%n/a | -13.89%n/a |
| Max drawdown duration | MBSD PRAB | 66d9d | 186dn/a | 196dn/a | 1449dn/a |
Trading data
MBSD | PRAB | |
Last sale 9/3/2026 at 1:30 PM | $20.33 | |
| Previous close 09/03/2026 | $20.29 | |
| Consolidated volume 09/03/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 4, 2026
1-year trailing difference
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PRAB
is actively managed and doesn’t replicate an indexMBSD | PRAB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/3/2026 at 1:30 PM
Live
Closed
MBSD | PRAB | |
|---|---|---|
| Last price | $20.33 | – |
| 1D performance | +0.18% | – |
| AuM | $88.39 M | $24.75 M |
| E/R | 0.21% | 0.39% |
Characteristics
MBSD | PRAB | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | Northern Trust | State Street Investment Management |
| Benchmark | ICE BofA Constrained Duration US MBS Index | - |
| N° of holdings | 39 | 13 |
| Asset class | Fixed Income | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 3, 2014 | March 11, 2026 |
| ESG | No | No |
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Exposure
Countries
MBSD
USA
12.86%
Other
87.14%
PRAB
USA
17.91%
Other
82.09%
Sectors
MBSD
Industrials
12.86%
Other
87.14%
PRAB
Industrials
17.91%
Other
82.09%
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Diversification
MBSD
Total weight of top 15 holdings out of 15
22.98%
PRAB
Total weight of top 15 holdings out of 15
36.44%
Top 15 holdings
Data as of July 31, 2026
MBSD
US01F0626972
2.56%
US01F0406938
2.17%
US36180AAK97
2.12%
US3132CYFK10
2.02%
US31427QCF72
1.48%
US3140W6KM30
1.39%
US3140XPUS68
1.35%
FN MA4418, 2% 1sep2036, USD (ABS)
1.31%
US3622AAXB57
1.28%
US3140W5Y247
1.28%
US3140W0ZG37
1.23%
US3140XHKH97
1.23%
G2 MA7937, 3% 20mar2052, USD (ABS)
1.19%
US01F0706907
1.18%
G2 MA6283, 3% 20nov2049, USD (ABS)
1.18%
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%
Frequently asked questions about MBSD and PRAB
Which ETF is bigger: MBSD or PRAB?
As of September 3, 2026, MBSD holds $88.39 M in assets under management (AUM), while PRAB manages $24.75 M.
What sectors do the MBSD and PRAB ETFs invest in?
MBSD leans toward sectors like Industrials. Meanwhile, PRAB focuses on Industrials.
What are the top holdings of the MBSD ETF and PRAB ETF?
MBSD top holdings include US01F0626972, US01F0406938 and US36180AAK97. PRAB holds in its top three: US02582JKD18, US92540FAD24 and US72585CAD74.
Which ETF is more diversified: MBSD or PRAB?
MBSD holds 466 securities with 22.98% of its assets in the top 15. PRAB has 65 securities and a top 15 weight of 36.44%.
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