Which returned more over the last year, CGSM or SUB?

In the year to Oct 9, 2026, with distributions reinvested, CGSM returned +0.8% and SUB +0.8%.

Which is cheaper, CGSM or SUB?

SUB is cheaper, by 0.18 percentage points a year. That is about $18 on $10,000 held for a year. Fees come from each fund's prospectus.

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CGSM vs SUB: Differences, Returns & Fees

CGSM's duration was 2.4 years on Jun 30, 2026 and SUB's 1.8 on May 31, 2026; SUB charges 0.07% to CGSM's 0.25%. Net assets: $1.6bn on Oct 8, 2026 for Capital Group Short Duration Municipal Income ETF, and $12.3bn on Oct 9, 2026 for iShares Short-Term National Muni Bond ETF.

SUB costs 0.18 points a year less; both returned +0.8% over a year; SUB is 7.5 times larger.

	CGSM	SUB
Expense ratio	0.25%	0.07%
Net assets, as of Oct 8, 2026	$1.6bn	$12.2bn
Total return, 1 year	+0.8%	+0.8%
What it tracks	No index, actively managed	ICE Short Maturity AMT-Free US National Municipal Index
Holdings in common	3%

Holdings in common uses holdings dated May 31, 2026 and Jun 30, 2026.

+0.8%

CGSM total return, 1 year

+0.8%

SUB total return, 1 year

0.25%

CGSM expense ratio

0.07%

SUB expense ratio

What they hold in common

By the books each fund has filed, CGSM and SUB hold 3% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026 and Jun 30, 2026.

50%

half

3% in common

Positions both hold, largest shared weight first

Holding CGSM SUB

UNIV OF CALIFORNIA CA REVENUES, due May 15, 2030 0.77% 0.25%

EAST CNTY ADVANCED WTR PURIFICATION JT PWRS AUTH, due Sep 1, 2026 0.20% 0.18%

NEW YORK NY, due Feb 1, 2056 0.72% 0.15%

DIST OF COLUMBIA INCOME TAX SECURED REVENUE, due Oct 1, 2026 0.18% 0.12%

LOS ANGELES CA DEPT OF WTR & PWR REVENUE, due Jul 1, 2030 0.19% 0.10%

MASSACHUSETTS ST DEPT OF TRANSPRTN MET HIGHWAY SYS REVENUE, due Jan 1, 2027 0.10% 0.09%

NEW YORK CITY NY MUNI WTR FIN AUTH WTR & SWR SYS REVENUE, due Jun 15, 2053 0.97% 0.07%

REGL TRANSPRTN AUTH IL, due Jul 1, 2029 0.07% 0.09%

NEW YORK CITY NY TRANSITIONAL FIN AUTH REV, due Nov 1, 2027 0.27% 0.07%

TEXAS ST, due Oct 1, 2029 0.16% 0.07%

MET TRANSPRTN AUTH NY REVENUE, due Nov 15, 2045 0.14% 0.07%

NEW YORK CITY NY TRANSITIONAL FIN AUTH REV, due Nov 1, 2054 0.47% 0.06%

Only in CGSM

MARYLAND ST, due Jun 1, 2030 1.08%

FLORIDA ST BRD OF EDU PUBLIC EDU, due Jun 1, 2029 1.06%

GEORGIA ST, due Dec 1, 2031 1.05%

SOUTH CAROLINA ST JOBS-ECON DEV AUTH HOSP REVENUE, due May 1, 2048 1.03%

ROCHESTER MN HLTH CARE FACS REVENUE, due Apr 1, 2066 1.02%

MISSISSIPPI BUSINESS FIN CORP MS PORT FAC REVENUE, due Jun 1, 2043 1.01%

PHOENIX AZ INDL DEV AUTH HLTHCARE FACS REVENUE, due Nov 15, 2052 1.00%

CONNECTICUT ST HLTH & EDUCTNL FACS AUTH REVENUE, due Jul 1, 2042 0.97%

Only in SUB

New Jersey Economic Development Authority, Series 2023RRR, due Mar 1, 2028 0.37%

County of King, Series 2024, due Jan 1, 2042 0.35%

San Antonio Water System, Series 2025D, due May 1, 2055 0.28%

City of Seattle, Series 2023B, due Nov 1, 2046 0.27%

State of California, due Aug 1, 2029 0.27%

Empire State Development Corp., Series 2022A, due Sep 15, 2028 0.25%

Pennsylvania Turnpike Commission, Series 2023B, due Dec 1, 2043 0.25%

New Jersey Turnpike Authority, Series 2025B, due Jan 1, 2030 0.25%

Check overlap with more funds →

On the same fields

CGSM

Capital Group Short Duration Municipal Income ETF

SUB

iShares Short-Term National Muni Bond ETF

Where it sits Bond ETF Bond ETF

Issuer Capital Group iShares

What it is Actively managed Tracks an index

Total return, 1 year +0.8% +0.8%

S&P 500 over the same days +17.3% +17.3%

Gap to the S&P 500 −16.4 pts −16.4 pts

Expense ratio 0.25% 0.07%

Holdings 1007 3057

Net assets, CGSM as of Oct 8, 2026 and SUB as of Oct 9, 2026 $1.6bn $12.3bn

CGSM and SUB on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

CGSM in plain words

CGSM is actively managed and tracks no index. Over the year to Oct 9, 2026 it returned +0.8% with distributions reinvested. The prospectus expense ratio is 0.25% a year.

SUB in plain words

SUB tracks an index. The prospectus expense ratio is 0.07% a year.

Questions people ask

Which returned more over the last year, CGSM or SUB?: In the year to Oct 9, 2026, with distributions reinvested, CGSM returned +0.8% and SUB +0.8%.
Which is cheaper, CGSM or SUB?: SUB is cheaper, by 0.18 percentage points a year. That is about $18 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

CGSM vs SMMU CGSM vs JMST CGSM vs VTES CGSM vs SHM MEAR vs SUB SUB vs TAFI SUB vs VTES JMST vs SUB

CGSM on its own →SUB on its own →Hold both: look the portfolio through →Rankings →Standards and sources →

Where these figures came from

CGSM filings on SEC EDGAR ↗CGSM prospectus with the expense ratio (SEC) ↗Capital Group page for CGSM ↗SUB filings on SEC EDGAR ↗SUB prospectus with the expense ratio (SEC) ↗iShares page for SUB ↗

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, CGSM against SUB, data as of Oct 9, 2026. https://etfiq.com/compare/any/cgsm-vs-sub

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.