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CMBSvsASECETF Comparison

ETF 1
CMBS

iShares CMBS ETF

This fund is part of
MBS & ABS
-0.45%
VS
ETF 2
ASEC

American Century Securitized Credit ETF

This fund is part of
MBS & ABS
-0.45%

iShares CMBS ETF (CMBS) and American Century Securitized Credit ETF (ASEC) have similar underlying exposures to countries and sectors. They also belong to the same industry segment: MBS & ABS. CMBS's top 3 sector exposures are Industrials, Non-Corporate and Finance. In contrast, ASEC's top sector exposures are Industrials, Sovereign and Non-Corporate. CMBS is less expensive with a Total Expense Ratio (TER) of 0.25%, versus 0.29% for ASEC. Run a side-by-side ETF comparison of CMBS and ASEC 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 ASEC performance and flow charts

Performance

-1.0-0.50.0%Aug 18Aug 25Sep 1Sep 8Sep 15

Cumulative Flows

-5,000,000-4,000,000-3,000,000-2,000,000-1,000,0000Aug 18Aug 25Sep 1Sep 8Sep 15

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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 09/18/2026
1M3MYTD1Y3Y5Y
Perf.
CMBS
ASEC
-1.26%-0.75%
-0.96%-0.06%
-0.50%n/a
+0.64%n/a
+16.57%n/a
+2.53%n/a
Flows
CMBS
ASEC
-$2M-
-$5M-
-$19M-
-$5M-
+$14M-
-$239M-
Volatility and drawdown
3M1Y3Y5Y
Volatility
CMBS
ASEC
+2.48%+1.55%
+2.53%n/a
+3.61%n/a
+4.56%n/a
Max drawdown
CMBS
ASEC
-1.50%-0.96%
-2.12%n/a
-2.58%n/a
-15.21%n/a
Max drawdown duration
CMBS
ASEC
24d24d
201dn/a
162dn/a
1373dn/a
Trading data

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CMBS
ASEC
Last sale
9/18/2026 at 1:30 PM
$47.58
$49.46
Previous close
09/18/2026
$47.60
$49.38
Consolidated volume
09/18/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
Replication quality
Data as of August 31, 2026
1-year trailing difference

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ASEC
is actively managed and doesn’t replicate an index

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CMBS
ASEC
Tracking error
Tracking difference
1 year cumulative return difference
Best
Worst
Daily return difference
Average
Worst
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Main metrics
Last update 9/18/2026 at 1:30 PM
Live
Closed
CMBS
ASEC
Last price
$47.58
$49.46
1D performance
-0.04%
+0.16%
AuM$461.54 M$19.75 M
E/R0.25%0.29%
Characteristics
CMBS
ASEC
Management strategyPassiveActive
ProvideriSharesAmerican Century Investments
BenchmarkBloomberg US CMBS ERISA Eligible Index-
N° of holdings197
Asset classFixed Income-
Trailing 12m distribution yield
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Inception dateFebruary 14, 2012May 27, 2026
ESGNoNo
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Exposure

Countries

CMBS
Other
100%
ASEC
USA
8.53%
Other
91.47%

Sectors

CMBS
Other
100%
ASEC
Other
100%

Diversification

CMBS

Total weight of top 15 holdings out of 15

12.53%
ASEC

Total weight of top 15 holdings out of 15

18.62%

Top 15 holdings

Data as of July 31, 2026
CMBS
Freddie Mac REMICS K117, 1.406% 25aug2030, USD (ABS, A2)
1.25%
US3137HCXK30
1.14%
US3137FTBM86
1.10%
US3136BXM355
0.92%
US3137FPHK45
0.90%
US3136BMXZ61
0.87%
US3137HLJ526
0.85%
US3137FCJK14
0.74%
US05555PAB85
0.73%
US3137HAAG19
0.72%
US3137HPUE10
0.71%
US3137FMTY89
0.69%
US22945DAG88
0.67%
US09661XAB47
0.64%
US3137HHHY05
0.62%
ASEC
USA, Notes 3.875% 15may2029, USD (AN-2029)
3.73%
US749427AC45
1.24%
US552339AA18
1.15%
Mosaic Solar Loan Trust 2025-1A, 6.12% 22aug2050, USD (ABS, A)
1.13%
US08860AAA79
1.13%
US74332XAE13
1.12%
US618933AA33
1.03%
US55389QAB32
1.03%
State Street Institutional US Government Money Market Fund
1.03%
US69544NAD93
1.01%
US22758FAF18
1.01%
Consolidated Communications 2025-1A, 6% 20may2030, USD (ABS, A2)
1.00%
US36272EAE41
1.00%
US92535VAU61
1.00%
US66981PAR91
1.00%
Frequently asked questions about CMBS and ASEC

Which ETF is bigger: CMBS or ASEC?

As of September 18, 2026, CMBS holds $461.54 M in assets under management (AUM), while ASEC manages $19.75 M.

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

CMBS top holdings include Freddie Mac REMICS K117, 1.406% 25aug2030, USD (ABS, A2), US3137HCXK30 and US3137FTBM86. ASEC holds in its top three: USA, Notes 3.875% 15may2029, USD (AN-2029), US749427AC45 and US552339AA18.

Which ETF is more diversified: CMBS or ASEC?

CMBS holds 454 securities with 12.53% of its assets in the top 15. ASEC has 105 securities and a top 15 weight of 18.62%.

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