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CMBSvsOOSPETF Comparison

ETF 1
CMBS

iShares CMBS ETF

This fund is part of
MBS & ABS
+0.22%
VS
ETF 2
OOSP

Obra Opportunistic Structured Products ETF

This fund is part of
US Aggregate Bonds
+0.18%

iShares CMBS ETF (CMBS) and Obra Opportunistic Structured Products ETF (OOSP) have similar underlying exposures to countries and sectors. CMBS's top 3 sector exposures are Industrials, Non-Corporate and Finance. In contrast, OOSP's top sector exposures are Industrials, Finance and Non-Corporate. CMBS is less expensive with a Total Expense Ratio (TER) of 0.25%, versus 1.97% for OOSP. CMBS is up 0.79% year-to-date (YTD) with -$38M in YTD flows. OOSP performs better with 4.31% YTD performance, and +$114M in YTD flows. Run a side-by-side ETF comparison of CMBS and OOSP 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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CMBS vs OOSP performance and flow charts

Performance

0.00.51.01.52.0%Oct 5Oct 12Oct 19Oct 26Nov 2

Cumulative Flows

01,000,0002,000,0003,000,0004,000,0005,000,000Oct 5Oct 12Oct 19Oct 26Nov 2

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Daily, global ETF data for advanced analysis or integration into apps (API), from our partner Trackinsight.

Historic performance and flows
Data as of 11/05/2026
1M3MYTD1Y3Y5Y
Perf.
CMBS
OOSP
+1.95%+0.58%
+0.07%+0.90%
+0.79%+4.31%
+1.71%+5.55%
+18.48%n/a
+4.52%n/a
Flows
CMBS
OOSP
+$5M-
-$24M-
-$38M+$114M
-$50M+$115M
+$40M-
-$274M-
Volatility and drawdown
3M1Y3Y5Y
Volatility
CMBS
OOSP
+3.04%+1.56%
+2.69%+1.09%
+3.51%n/a
+4.58%n/a
Max drawdown
CMBS
OOSP
-2.18%-0.20%
-2.79%-0.39%
-2.79%n/a
-14.68%n/a
Max drawdown duration
CMBS
OOSP
72d29d
249d37d
249dn/a
1321dn/a
Trading data

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CMBS
OOSP
Last sale
11/6/2026 at 5:26 PM
$47.82
$10.05
Previous close
11/04/2026
$47.70
$10.05
Consolidated volume
11/04/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
Replication quality
Data as of October 30, 2026
1-year trailing difference

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OOSP
is actively managed and doesn’t replicate an index

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CMBS
OOSP
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst
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Main metrics
Last update 11/6/2026 at 5:26 PM
Live
Closed
CMBS
OOSP
Last price
$47.82
$10.05
1D performance
+0.25%
+0.00%
AuM$445.47 M$149.82 M
E/R0.25%1.97%
Characteristics
CMBS
OOSP
Management strategyPassiveActive
ProvideriSharesObra Funds
BenchmarkBloomberg US CMBS ERISA Eligible Index-
N° of holdings1711
Asset classFixed Income-
Trailing 12m distribution yield
Join
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Inception dateFebruary 14, 2012April 9, 2024
ESGNoNo
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Exposure

Countries

CMBS
Other
100%
OOSP
Other
100%

Sectors

CMBS
Other
100%
OOSP
Other
100%

Diversification

CMBS

Total weight of top 15 holdings out of 15

13.01%
OOSP

Total weight of top 15 holdings out of 15

12.99%

Top 15 holdings

Data as of September 30, 2026
CMBS
BlackRock Cash Funds - Treasury
1.45%
US3137HCXK30
1.19%
US3137FTBM86
1.17%
US3137FPHK45
0.96%
US3136BMXZ61
0.91%
US3137HNN870
0.86%
US05555PAB85
0.78%
US3137HAAG19
0.75%
US3137FMTY89
0.74%
US3137HPUE10
0.74%
US22945DAG88
0.72%
US07337AAD81
0.71%
US09661XAB47
0.68%
US08164BAC46
0.68%
US05491UBD90
0.66%
OOSP
US62956HAG11
1.18%
US12988DAG79
1.02%
US76089TAC45
1.00%
US69549PAC14
0.99%
US12577HAG56
0.90%
US34461WAG50
0.85%
US92535VAS16
0.82%
US46676AAG85
0.81%
US362414AG97
0.81%
US39152MAG06
0.81%
US05618XAG51
0.80%
US98919WAQ69
0.78%
US43284KAD46
0.78%
US12433KAG22
0.73%
US69490AAD19
0.70%
Frequently asked questions about CMBS and OOSP

How have the CMBS and OOSP ETFs performed in 2026?

As of November 5, 2026, CMBS is up 0.79% year-to-date (YTD), while OOSP has returned 4.31%. That puts OOSP better performer ahead so far this year.

Which ETF is attracting more investor money: CMBS or OOSP?

Year-to-date, the CMBS ETF saw -$38M in flows, compared to +$114M for OOSP.

Which ETF is more volatile: CMBS or OOSP?

Over the past year, CMBS had a volatility of 2.69%, while OOSP experienced 1.09%.

Which ETF is bigger: CMBS or OOSP?

As of November 5, 2026, CMBS holds $445.47 M in assets under management (AUM), while OOSP manages $149.82 M.

What are the top holdings of the CMBS ETF and OOSP ETF?

CMBS top holdings include BlackRock Cash Funds - Treasury, US3137HCXK30 and US3137FTBM86. OOSP holds in its top three: US62956HAG11, US12988DAG79 and US76089TAC45.

Which ETF is more diversified: CMBS or OOSP?

CMBS holds 428 securities with 13.01% of its assets in the top 15. OOSP has 259 securities and a top 15 weight of 12.99%.

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