Fund · PIMCO Short Term Municipal Bond Active Exchange-Traded Fund · measured from SEC filings
SMMU holdings
SMMU reports 353 holdings and behaves like 178.7 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 28 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% at a quoted market price (level 1), one issuer country, 0.2% restricted securities.
What stands out
as of 2026-06-30SMMU's largest investment is U.S. Treasury Notes at 2.24% of net assets. U.S. Treasury Notes and Connecticut State Health & Educational Facilities Authority follow; the three together are 5.8%. Ten companies are 14.02% of the fund; the other 343 share the rest. Among the 192 bond funds measured here, SMMU behaves like 178.7 holdings against a median of 236.4 — close to the median. Across 28 quarterly filings SMMU has become less concentrated: it behaved like 95.6 at 2019-09-30 and 178.7 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 65 positions were added and 42 dropped; 22.9% 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 2019
28Between 2019-09-30 and 2026-06-30, SMMU went from behaving like 95.6 equally weighted positions to 178.7 — 87% more, while its top ten went from 17.97% to 14.02% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-06-30 | 353 | 178.7 | 14.02% | 2.24% |
| 2026-03-31 | 329 | 160.2 | 15.73% | 2.48% |
| 2025-12-31 | 335 | 191.1 | 12.86% | 1.77% |
| 2025-09-30 | 331 | 170.4 | 14.76% | 2.77% |
| 2025-06-30 | 324 | 178.7 | 13.71% | 2.05% |
| 2025-03-31 | 273 | 157.7 | 14.62% | 2.53% |
| 2024-12-31 | 260 | 153.5 | 14.65% | 2.72% |
| 2024-09-30 | 260 | 148.3 | 15.78% | 2.61% |
Earlier filings (20 more, back to 2019-09-30)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-06-30 | 251 | 133.8 | 16.9% | 2.89% |
| 2024-03-31 | 257 | 124.6 | 17.26% | 4.23% |
| 2023-12-31 | 264 | 143.7 | 15.45% | 3.02% |
| 2023-09-30 | 260 | 128.9 | 17.69% | 3.23% |
| 2023-06-30 | 269 | 127.5 | 17.81% | 3.15% |
| 2023-03-31 | 277 | 126.8 | 18.68% | 3.12% |
| 2022-12-31 | 303 | 138.1 | 16.52% | 3.55% |
| 2022-09-30 | 313 | 133.1 | 18.71% | 2.66% |
| 2022-06-30 | 322 | 76.6 | 22.02% | 6.77% |
| 2022-03-31 | 349 | 191.8 | 12.09% | 1.56% |
| 2021-12-31 | 364 | 162.9 | 13.71% | 4.09% |
| 2021-09-30 | 366 | 201.5 | 11.45% | 1.55% |
| 2021-06-30 | 316 | 159.7 | 15.54% | 2.07% |
| 2021-03-31 | 283 | 132.5 | 17.32% | 4.33% |
| 2020-12-31 | 246 | 147.1 | 16.14% | 2.24% |
| 2020-09-30 | 230 | 114.4 | 18.65% | 4.75% |
| 2020-06-30 | 188 | 95.3 | 20.35% | 5.85% |
| 2020-03-31 | 149 | 104.5 | 18.82% | 3.45% |
| 2019-12-31 | 157 | 126.5 | 13.69% | 2.02% |
| 2019-09-30 | 148 | 95.6 | 17.97% | 5.23% |
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 353 positions in SMMU's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: SMMU.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | United States Treasury | 2.24% | 2.2% |
| 2 | United States Treasury | 1.80% | 4.0% |
| 3 | Connecticut State Health & Educational Facilities Authority | 1.75% | 5.8% |
| 4 | FED HOME LN DISCOUNT NT | 1.68% | 7.5% |
| 5 | New York City Municipal Water Finance Authority | 1.34% | 8.8% |
| 6 | Fort Bend Independent School District | 1.24% | 10.1% |
| 7 | Tarrant County Cultural Education Facilities Finance Corp | 1.22% | 11.3% |
| 8 | United States Treasury | 1.19% | 12.5% |
| 9 | Miami-Dade County Housing Finance Authority | 1.10% | 13.6% |
| 10 | Connecticut State Health & Educational Facilities Authority | 1.09% | 14.7% |
| 11 | Connecticut State Health & Educational Facilities Authority | 1.04% | 15.7% |
| 12 | Oklahoma City Public Property Authority | 0.96% | 16.7% |
| 13 | Massachusetts Development Finance Agency | 0.96% | 17.6% |
| 14 | FED HOME LN DISCOUNT NT | 0.89% | 18.5% |
| 15 | Harris County Cultural Education Facilities Finance Corp | 0.88% | 19.4% |
Returns the fund reported
2019-07 – 2026-06Monthly total returns from Item B.5 of SMMU's own filings, 84 months on record. Not computed here and not from a price feed.
Cross-checked against a series computed separately from prices: median difference 0.04 percentage points over 84 months, which is roughly the distributions. Every month with the filing it came from: SMMU.json · all funds.
Since the previous filing
2026-03-31 → 2026-06-30329 positions became 352: 65 added (21.3% of the fund at the later date), 42 dropped (14.4% at the earlier date). Half the sum of all weight changes, a turnover proxy: 22.9%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of SMMU 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 |
|---|---|---|---|---|---|
| Tarrant County Cultural Education Facilities Finance Corp | 0.38% | 1.22% | Black Belt Energy Gas District | 0.41% | 0.10% |
| FED HOME LN DISCOUNT NT | 0.95% | 1.68% | Kentucky Public Energy Authority | 0.55% | 0.28% |
| United States Treasury | 2.48% | 2.24% | |||
| United States Treasury | 2.01% | 1.80% | |||
| Connecticut State Health & Educational Facilities Author | 1.92% | 1.75% | |||
| New York City Municipal Water Finance Authority | 1.48% | 1.34% |
New: Connecticut State Health & Educational Facilities Author (1.04%), Oklahoma City Public Property Authority (0.96%), Texas Municipal Gas Acquisition & Supply Corp V (0.81%), United States Treasury (0.80%), Illinois Finance Authority (0.76%), New York City Municipal Water Finance Authority (0.75%). Gone: FEDERAL HOME LOAN BANK (FHLB) (1.69%), NEW YORK CITY MUNICIPAL WATER FINANCE AUTHORITY (0.96%), FEDERAL HOME LOAN BANK (FHLB) (0.84%), UNITED STATES GOVT (0.80%), UNITED STATES GOVT (0.67%), FEDERAL HOME LOAN BANK (FHLB) (0.62%).
Asset categories and pricing
as of 2026-06-3098.77% debt, 1.23% short-term investment as filed; 0.0% 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.
Neighbours by effective holdings, debt funds
10Every measured debt fund lined up by how many holdings it behaves like; these sit either side of SMMU (178.7). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| NBSD Neuberger Short Duration Income ETF | 1,063 | 158.5 * | 15.23% | 2026-07-31 |
| FLCO Franklin Investment Grade Corporate ETF | 227 | 160.4 | 11.87% | 2026-06-30 |
| BSCQ Invesco BulletShares 2026 Corporate Bond ETF | 231 | 161.1 | 13.93% | 2026-05-31 |
| FIIG First Trust Intermediate Duration Investment Grade Corporate ETF | 232 | 161.1 | 12.54% | 2026-07-31 |
| FBND Fidelity Total Bond ETF | 4,584 | 161.2 | 18% | 2026-05-31 |
| JSCP JPMorgan Short Duration Core Plus ETF | 1,222 | 180.2 | 18.91% | 2026-05-31 |
| FDHY Fidelity Enhanced High Yield ETF | 300 | 185 | 10.85% | 2026-05-31 |
| CGCB Capital Group Core Bond ETF | 771 | 191 | 13.29% | 2026-06-30 |
| FLHY Franklin High Yield Corporate ETF | 290 | 193.6 | 9.92% | 2026-06-30 |
| ICVT iShares Convertible Bond ETF | 376 | 195.5 | 12.95% | 2026-07-31 |
Essays that examine SMMU
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.