CGSMvsSPMBETF Comparison
VS
ETF 2
SPMB
State Street State Street SPDR Portfolio Mortgage Backed Bond ETF
This fund is part of
MBS & ABS
-0.1%
Capital Group Short Duration Municipal Income ETF (CGSM) belongs to the Municipal Bonds segment. State Street State Street SPDR Portfolio Mortgage Backed Bond ETF (SPMB) is part of the MBS & ABS segment. CGSM's top 1 sector exposures are Municipal. In contrast, SPMB's top sector exposures are Industrials, Finance and Government Agencies. CGSM is more expensive with a Total Expense Ratio (TER) of 0.25%, versus 0.04% for SPMB. CGSM is up 0.66% year-to-date (YTD) with +$655M in YTD flows. SPMB performs worse with -1.53% YTD performance, and +$655M in YTD flows. Run a side-by-side ETF comparison of CGSM and SPMB 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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CGSM vs SPMB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/16/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | CGSM SPMB | -0.81%-1.66% | -0.65%-2.70% | +0.66%-1.53% | +1.14%-0.61% | n/a+13.34% | n/a-0.88% |
| Flows | CGSM SPMB | +$31M+$53M | +$387M+$231M | +$655M+$655M | +$789M+$936M | -+$2.58B | -+$3.74B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | CGSM SPMB | +1.26%+4.80% | +1.47%+4.25% | n/a+5.94% | n/a+6.72% |
| Max drawdown | CGSM SPMB | -0.91%-3.00% | -1.36%-3.61% | n/a-5.40% | n/a-17.24% |
| Max drawdown duration | CGSM SPMB | 22d79d | 116d199d | n/a318d | n/a1486d |
Trading data
CGSM | SPMB | |
Last sale 9/17/2026 at 3:12 PM | $26.06 | $21.62 |
| Previous close 09/16/2026 | $26.03 | $21.52 |
| Consolidated volume 09/16/2026 | ||
| 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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CGSM
is actively managed and doesn’t replicate an indexCGSM | SPMB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/17/2026 at 3:12 PM
Live
Closed
CGSM | SPMB | |
|---|---|---|
| Last price | $26.06 | $21.62 |
| 1D performance | +0.12% | +0.44% |
| AuM | $1.59 B | $7.01 B |
| E/R | 0.25% | 0.04% |
Characteristics
CGSM | SPMB | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Capital Group | State Street Investment Management |
| Benchmark | - | Bloomberg U.S. MBS Index |
| N° of holdings | 238 | 554 |
| Asset class | - | Bonds |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 26, 2023 | January 15, 2009 |
| ESG | No | No |
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Exposure
Countries
CGSM
USA
30.86%
Other
69.14%
SPMB
USA
32.64%
Other
67.36%
Sectors
CGSM
Municipal
30.86%
Other
69.14%
SPMB
Industrials
32.31%
Other
67.69%
Diversification
CGSM
Total weight of top 15 holdings out of 15
11.66%
SPMB
Total weight of top 15 holdings out of 15
9.28%
Top 15 holdings
Data as of July 31, 2026
CGSM
US650028E821
1.14%
US574193XS28
1.04%
US34153QZG45
1.02%
US373385QZ98
1.01%
US83703FLR19
1.01%
Triborough Bridge and Tunnel Authority, 5% 1feb2028, USD (2026A)
0.84%
US91412HWB58
0.74%
PEFA Inc., 5% 1sep2049, USD (2019)
0.65%
US57421CLT98
0.64%
Virginia College Building Authority, 5% 1feb2032, USD
0.63%
US48542TBS87
0.62%
US74440DFN93
0.60%
Black Belt Energy Gas District, 5% 1jun2031, USD (2026)
0.59%
US254773BN34
0.57%
Puerto Rico, FRN 1nov2043, USD
0.56%
SPMB
US3142J6C840
1.16%
US01F0526800
0.86%
FN MA4547, 2% 1feb2052, USD (ABS)
0.78%
US3142J6BK85
0.76%
US01F0506844
0.70%
FR SD8212, 2.5% 1may2052, USD (ABS)
0.60%
US3132DWMY65
0.55%
G2 MB0424, 5.5% 20jun2055, USD (ABS)
0.54%
FN MA4701, 4.5% 1aug2052, USD (ABS)
0.51%
US01F0606834
0.50%
US21H0506806
0.49%
FN FA0608, 5.5% 1feb2055, USD (ABS)
0.49%
FN MA4465, 2% 1nov2051, USD (ABS)
0.47%
FN FS2040, 2% 1feb2052, USD (ABS)
0.44%
US3132DWKV45
0.43%
Frequently asked questions about CGSM and SPMB
How have the CGSM and SPMB ETFs performed in 2026?
As of September 16, 2026, CGSM is up 0.66% year-to-date (YTD), while SPMB has lost -1.53%. That puts CGSM better performer ahead so far this year.
Which ETF is attracting more investor money: CGSM or SPMB?
Year-to-date, the CGSM ETF saw +$655M in flows, compared to +$655M for SPMB.
Which ETF is more volatile: CGSM or SPMB?
Over the past year, CGSM had a volatility of 1.47%, while SPMB experienced 4.25%.
Which ETF is bigger: CGSM or SPMB?
As of September 16, 2026, CGSM holds $1.59 B in assets under management (AUM), while SPMB manages $7.01 B.
What sectors do the CGSM and SPMB ETFs invest in?
CGSM leans toward sectors like Municipal. Meanwhile, SPMB focuses on Industrials.
What are the top holdings of the CGSM ETF and SPMB ETF?
CGSM top holdings include US650028E821, US574193XS28 and US34153QZG45. SPMB holds in its top three: US3142J6C840, US01F0526800 and FN MA4547, 2% 1feb2052, USD (ABS).
Which ETF is more diversified: CGSM or SPMB?
CGSM holds 1018 securities with 11.66% of its assets in the top 15. SPMB has 2713 securities and a top 15 weight of 9.28%.
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Latest news about CGSM & SPMB
A Close Look at Capital Group's 5 New Active ETFs Listed on NYSE ARCA
October 26, 2023
CGSM
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