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GMOCvsMBBAETF Comparison

ETF 1
GMOC

GMO Ultra-Short Income ETF

This fund is part of
US Aggregate Bonds
-0.23%
VS
ETF 2
MBBA

iShares Mortgage-Backed Securities Active ETF

This fund is part of
MBS & ABS
-0.3%

GMO Ultra-Short Income ETF (GMOC) belongs to the US Aggregate Bonds segment. iShares Mortgage-Backed Securities Active ETF (MBBA) is part of the MBS & ABS segment. GMOC's top 3 sector exposures are Sovereign, Government Agencies and Industrials. In contrast, MBBA's top sector exposures are Industrials and Non-Corporate. GMOC is less expensive with a Total Expense Ratio (TER) of 0.2%, versus 0.26% for MBBA. Run a side-by-side ETF comparison of GMOC 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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GMOC vs MBBA performance and flow charts

Performance

-0.20.00.20.40.60.8%Aug 3Aug 10Aug 17Aug 24Aug 31

Cumulative Flows

0 M1 M2 M3 M4 M5 MAug 3Aug 10Aug 17Aug 24Aug 31

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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 09/01/2026
1M3MYTD1Y3Y5Y
Perf.
GMOC
MBBA
+0.32%-0.18%
+1.02%-1.07%
+2.72%n/a
n/an/a
n/an/a
n/an/a
Flows
GMOC
MBBA
-+$5M
-$2M+$35M
+$25M-
--
--
--
Volatility and drawdown
3M1Y3Y5Y
Volatility
GMOC
MBBA
+0.23%+4.75%
n/an/a
n/an/a
n/an/a
Max drawdown
GMOC
MBBA
-0.01%-2.02%
n/an/a
n/an/a
n/an/a
Max drawdown duration
GMOC
MBBA
4d64d
n/an/a
n/an/a
n/an/a
Trading data

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GMOC
MBBA
Last sale
9/2/2026 at 2:45 PM
$50.06
$48.51
Previous close
09/01/2026
$50.06
$48.49
Consolidated volume
09/01/2026
Average volume
30 days
Average discount or premium
30 days
Average Bid/Ask spread
30 days
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Main metrics
Last update 9/2/2026 at 2:45 PM
Live
Closed
GMOC
MBBA
Last price
$50.06
$48.51
1D performance
+0.00%
+0.04%
AuM$32.53 M$156.23 M
E/R0.2%0.26%
Characteristics
GMOC
MBBA
Management strategyActiveActive
ProviderGMOiShares
Benchmark--
N° of holdings2225
Asset class--
Trailing 12m distribution yield
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Join
Inception dateOctober 27, 2025January 23, 2026
ESGNoNo
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Exposure

Countries

GMOC
USA
31.43%
Other
68.58%
MBBA
Data will be available soon

Sectors

GMOC
Sovereign
25.19%
Other
74.81%
MBBA
Data will be available soon
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Diversification

GMOC

Total weight of top 15 holdings out of 15

60.77%
MBBA
Data will be available soon

Top 15 holdings

Data as of July 31, 2026
GMOC
US94949GAW15
7.65%
US48249VBE02
5.10%
US95023AAL44
4.96%
US69702EAJ47
4.65%
US87167NDL64
4.43%
US05684GAQ91
4.21%
USA, Notes 3.5% 31jan2028, USD (U-2028)
4.04%
USA, Notes 3.875% 31dec2027, USD (AH-2027)
4.02%
US39809TAW71
3.95%
USA, Notes 3.375% 30nov2027, USD (BL-2027)
3.46%
US92332NBC83
3.37%
USA, Notes 3.5% 30sep2027, USD (BH-2027)
3.13%
USA, Notes 3.625% 31aug2027, USD (BG-2027)
2.86%
US92328XBD03
2.47%
US07132JBL70
2.46%
MBBA
Data will be available soon
Frequently asked questions about GMOC and MBBA

Which ETF is bigger: GMOC or MBBA?

As of September 1, 2026, GMOC holds $32.53 M in assets under management (AUM), while MBBA manages $156.23 M.

What sectors do the GMOC and MBBA ETFs invest in?

GMOC leans toward sectors like Sovereign. Meanwhile, MBBA focuses on Industrials and Non-Corporate.

What are the top holdings of the GMOC ETF and MBBA ETF?

GMOC top holdings include US94949GAW15, US48249VBE02 and US95023AAL44. MBBA holds in its top three: US01F0526800, US01F0206874 and BlackRock Liquidity T-Fund.

Which ETF is more diversified: GMOC or MBBA?

GMOC holds 60 securities with 60.77% of its assets in the top 15. MBBA has 491 securities and a top 15 weight of 89.36%.

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