Fund · Capital Group Short Duration Municipal Income ETF · measured from SEC filings
CGSM holdings
CGSM reports 1,010 holdings and behaves like 344.3 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-06-30. The fact sheet publishes the first number; this page computes the second, and traces it across 12 quarters of filings.
Measured concentration
as of 2026-06-30Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 0.08% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-06-30CGSM's largest investment is Maryland ST at 1.08% of net assets. Florida ST BRD OF EDU Public EDU and Georgia ST follow; the three together are 3.18%. Ten companies are 9.45% of the fund; the other 1,000 share the rest. Among the 192 bond funds measured here, CGSM behaves like 344.3 holdings against a median of 236.4 — close to the median. Across 12 quarterly filings CGSM has become less concentrated: it behaved like 35.2 at 2023-09-30 and 344.3 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 202 positions were added and 75 dropped; 40.0% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable bond funds on this site. Nothing here is a view on the fund.
Every filing since 2023
12Between 2023-09-30 and 2026-06-30, CGSM went from behaving like 35.2 equally weighted positions to 344.3 — 878% more, while its top ten went from 38.99% to 9.45% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 1,010 | 344.3 | 9.45% | 1.01% |
| 2026-03-31 | 883 | 375.6 | 9.3% | 1.43% |
| 2025-12-31 | 798 | 389.5 | 8.39% | 1.66% |
| 2025-09-30 | 736 | 354 | 8.55% | 1.85% |
| 2025-06-30 | 637 | 345.1 | 8.26% | 1.31% |
| 2025-03-31 | 564 | 313.7 | 8.36% | 1.38% |
| 2024-12-31 | 508 | 296.3 | 8.45% | 1.23% |
| 2024-09-30 | 409 | 249.5 | 9.21% | 1.18% |
Earlier filings (4 more, back to 2023-09-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-06-30 | 125 | 96.5 | 17.4% | 1.98% |
| 2024-03-31 | 101 | 84.4 | 18.83% | 2.3% |
| 2023-12-31 | 100 | 84.2 | 18.71% | 2.24% |
| 2023-09-30 | 45 | 35.2 | 38.99% | 6.69% |
One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.
Largest positions, as filed
as of 2026-06-30The 15 largest of 1,010 positions in CGSM's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: CGSM.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | State of Maryland | 1.01% | 1.0% |
| 2 | State of Florida | 0.99% | 2.0% |
| 3 | State of Georgia | 0.98% | 3.0% |
| 4 | South Carolina Jobs-Economic Development Authority | 0.97% | 3.9% |
| 5 | City of Rochester MN | 0.96% | 4.9% |
| 6 | Mississippi Business Finance Corp | 0.95% | 5.8% |
| 7 | Industrial Development Authority of the City of Phoenix Arizona/The | 0.94% | 6.8% |
| 8 | Connecticut State Health & Educational Facilities Authority | 0.91% | 7.7% |
| 9 | New York City Municipal Water Finance Authority | 0.91% | 8.6% |
| 10 | New York City Transitional Finance Authority Future Tax Secured Revenue | 0.85% | 9.5% |
| 11 | Industrial Development Authority of the City of Phoenix Arizona/The | 0.83% | 10.3% |
| 12 | Triborough Bridge & Tunnel Authority | 0.82% | 11.1% |
| 13 | University of California | 0.72% | 11.8% |
| 14 | County of Montgomery MD | 0.71% | 12.5% |
| 15 | Metropolitan Transportation Authority | 0.69% | 13.2% |
Returns the fund reported
2023-09 – 2026-06Monthly total returns from Item B.5 of CGSM's own filings, 34 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference — percentage points over 0 months, which is roughly the distributions. Every month with the filing it came from: CGSM.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-30883 positions became 1,010: 202 added (37.3% of the fund at the later date), 75 dropped (12.3% at the earlier date). Half the sum of all weight changes, a turnover proxy: 40.0%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of CGSM compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-03-31 | 2026-06-30 | Largest decreases | 2026-03-31 | 2026-06-30 |
|---|---|---|---|---|---|
| Mississippi Business Finance Corp | 0.21% | 0.95% | Tarrant County Cultural Education Facilities Finance Corp | 0.79% | 0.05% |
| County of Montgomery MD | 0.31% | 0.71% | New York City Transitional Finance Authority Future Tax Secu | 0.75% | 0.14% |
| New Hampshire Health and Education Facilities Authority Act | 0.10% | 0.31% | South Carolina Jobs-Economic Development Authority | 1.43% | 0.97% |
| State of Hawaii Department of Budget & Finance | 0.17% | 0.38% | Triborough Bridge & Tunnel Authority | 1.19% | 0.82% |
| California Municipal Finance Authority | 0.09% | 0.25% | State of Wisconsin | 0.51% | 0.15% |
| Massachusetts Health & Educational Facilities Authority | 0.13% | 0.30% | PEFA Inc | 0.91% | 0.62% |
New: State of Maryland (1.01%), State of Florida (0.99%), State of Georgia (0.98%), City of Rochester MN (0.96%), Industrial Development Authority of the City of Phoenix Ariz (0.94%), New York City Municipal Water Finance Authority (0.91%). Gone: Mississippi Business Finance Corp (1.29%), New York City Municipal Water Finance Authority (0.99%), Washington Suburban Sanitary Commission (0.52%), Utility Debt Securitization Authority (0.49%), Michigan Finance Authority (0.43%), County of Fairfax VA (0.42%).
Asset categories and pricing
as of 2026-06-3099.92% debt, 0.07% short-term investment as filed; 0.1% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.
Derivative exposure and counterparties
as of 2026-06-30A position count cannot describe a fund that uses derivatives, because a swap is filed at its unrealised gain, not its exposure. These are the notionals the fund itself reported, against net assets of $1.52B. Notional of an interest-rate or currency swap is not equity exposure.
Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).
Neighbours by effective holdings, debt funds
10Every measured debt fund lined up by how many holdings it behaves like; these sit either side of CGSM (344.3). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| FLOT iShares Floating Rate Bond ETF | 546 | 324.5 | 9.25% | 2026-07-31 |
| FTSM First Trust Enhanced Short Maturity ETF | 689 | 328 | 8.24% | 2026-07-31 |
| BSCT Invesco BulletShares 2029 Corporate Bond ETF | 455 | 334.2 | 8.28% | 2026-05-31 |
| FSMB First Trust Short Duration Managed Municipal ETF | 551 | 338.5 | 7.07% | 2026-07-31 |
| BSCU Invesco BulletShares 2030 Corporate Bond ETF | 445 | 343.5 | 7.88% | 2026-05-31 |
| EMHY iShares J.P. Morgan EM High Yield Bond ETF | 691 | 344.5 | 9.42% | 2026-07-31 |
| BSCS Invesco BulletShares 2028 Corporate Bond ETF | 468 | 352.4 | 7.83% | 2026-05-31 |
| PHYL PGIM Active High Yield Bond ETF | 788 | 353.2 | 8.3% | 2026-05-29 |
| ISTB iShares Core 1-5 Year USD Bond ETF | 7,405 | 365.2 | 8.76% | 2026-07-31 |
| TAFM AB Tax-Aware Intermediate Municipal ETF | 580 | 373.9 | 7.22% | 2026-05-31 |
Essays that examine CGSM
0Mentions are detected across the full text of every article, so an appearance may be a passing comparison rather than the subject. Nothing here is a recommendation to buy or sell — see the disclaimer.