Fund · iShares iBonds Dec 2027 Term Muni Bond ETF · measured from SEC filings
IBMP holdings
IBMP reports 1,846 holdings and behaves like 957 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-07-31. The fact sheet publishes the first number; this page computes the second, and traces it across 27 quarters of filings.
Measured concentration
as of 2026-07-31Computed 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: 0.33% at a quoted market price (level 1), one issuer country.
What stands out
as of 2026-07-31IBMP's largest investment is State Of California at 0.46% of net assets. State Of Michigan, Series 2016 and University Of California, Series 2025bz follow; the three together are 1.3%. Ten companies are 3.65% of the fund; the other 1,836 share the rest. Among the 192 bond funds measured here, IBMP behaves like 957 holdings against a median of 236.4 — 4.0 times the median. Across 27 quarterly filings IBMP has become less concentrated: it behaved like 125.4 at 2019-10-31 and 921.1 at 2026-04-30. Between the 2026-01-31 and 2026-04-30 filings 34 positions were added and 28 dropped; 3.9% 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
27Between 2019-10-31 and 2026-04-30, IBMP went from behaving like 125.4 equally weighted positions to 921.1 — 635% more, while its top ten went from 14.86% to 3.72% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-04-30 | 1,645 | 921.1 | 3.72% | 0.46% |
| 2026-01-31 | 1,639 | 908 | 3.88% | 0.48% |
| 2025-10-31 | 1,551 | 870.2 | 3.96% | 0.52% |
| 2025-07-31 | 1,498 | 851.8 | 4.12% | 0.53% |
| 2025-04-30 | 1,434 | 837.4 | 4.17% | 0.57% |
| 2025-01-31 | 1,416 | 829.4 | 4.16% | 0.58% |
| 2024-10-31 | 1,337 | 778.4 | 4.46% | 0.62% |
| 2024-07-31 | 1,268 | 740.3 | 4.67% | 0.68% |
Earlier filings (19 more, back to 2019-10-31)
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2024-04-30 | 1,241 | 729.2 | 4.75% | 0.71% |
| 2024-01-31 | 1,227 | 740 | 4.55% | 0.6% |
| 2023-10-31 | 1,055 | 580.1 | 5.84% | 1.6% |
| 2023-07-31 | 1,011 | 646.3 | 4.55% | 0.57% |
| 2023-04-30 | 998 | 650 | 4.32% | 0.5% |
| 2023-01-31 | 976 | 635 | 4.51% | 0.52% |
| 2022-10-31 | 797 | 516.8 | 5.76% | 0.7% |
| 2022-07-31 | 678 | 404.5 | 7.1% | 2.14% |
| 2022-04-30 | 562 | 425.7 | 5.27% | 0.86% |
| 2022-01-31 | 521 | 402.2 | 5.4% | 0.67% |
| 2021-10-31 | 448 | 347.2 | 6.34% | 0.88% |
| 2021-07-31 | 418 | 329.5 | 6.55% | 0.75% |
| 2021-04-30 | 385 | 302.7 | 7% | 0.82% |
| 2021-01-31 | 353 | 273.2 | 7.68% | 0.92% |
| 2020-10-31 | 321 | 249.5 | 7.96% | 1.03% |
| 2020-07-31 | 281 | 217.7 | 9.02% | 1.26% |
| 2020-04-30 | 215 | 162.7 | 11.11% | 1.83% |
| 2020-01-31 | 192 | 141.9 | 12.96% | 2.08% |
| 2019-10-31 | 175 | 125.4 | 14.86% | 2.44% |
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 2026-04-30The 15 largest of 1,846 positions in IBMP's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: IBMP.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | State of California | 0.46% | 0.5% |
| 2 | State of Michigan | 0.45% | 0.9% |
| 3 | University of California | 0.41% | 1.3% |
| 4 | Geisinger Authority | 0.38% | 1.7% |
| 5 | El Camino Community College District | 0.34% | 2.0% |
| 6 | City of Boston | 0.34% | 2.4% |
| 7 | State of New Jersey | 0.34% | 2.7% |
| 8 | New Jersey Transportation Trust Fund Authority | 0.34% | 3.1% |
| 9 | California Health Facilities Financing Authority | 0.33% | 3.4% |
| 10 | Black Belt Energy Gas District | 0.33% | 3.7% |
| 11 | District of Columbia Income Tax | 0.31% | 4.0% |
| 12 | Round Rock Independent School District | 0.31% | 4.3% |
| 13 | State of Illinois | 0.30% | 4.6% |
| 14 | Triborough Bridge & Tunnel Authority | 0.29% | 4.9% |
| 15 | SCAGO Educational Facilities Corp. for Pickens School District | 0.29% | 5.2% |
Returns the fund reported
2019-08 – 2026-04Monthly total returns from Item B.5 of IBMP's own filings, 81 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: IBMP.json · all funds.
Since the previous filing
2026-01-31 → 2026-04-301,639 positions became 1,645: 34 added (2.2% of the fund at the later date), 28 dropped (1.3% at the earlier date). Half the sum of all weight changes, a turnover proxy: 3.9%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of IBMP compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-01-31 | 2026-04-30 | Largest decreases | 2026-01-31 | 2026-04-30 |
|---|---|---|---|---|---|
| Black Belt Energy Gas District | 0.15% | 0.33% | BlackRock Liquidity Funds | 0.41% | 0.16% |
| Sales Tax Securitization Corp. | 0.08% | 0.21% | Michigan State Housing Development Authority | 0.05% | 0.04% |
| State of Connecticut | 0.09% | 0.20% | State of California | 0.48% | 0.46% |
| School Board of Miami-Dade County (The) | 0.14% | 0.23% | University of California | 0.43% | 0.41% |
| California State Public Works Board | 0.08% | 0.13% | New Jersey Transportation Trust Fund Authority | 0.35% | 0.34% |
| City of San Antonio Electric & Gas Systems | 0.04% | 0.08% | California Health Facilities Financing Authority | 0.34% | 0.33% |
New: Los Angeles Unified School District (0.25%), School Board of Miami-Dade County (The) (0.16%), Duarte Unified School District (0.16%), State of Connecticut (0.14%), State of California (0.13%), New York State Dormitory Authority (0.12%). Gone: Omaha Public Power District (0.24%), Cypress-Fairbanks Independent School District (0.11%), County of Clark (0.08%), New York City Transitional Finance Authority Building Aid (0.06%), School Board of Miami-Dade County (The) (0.05%), State of Ohio (0.05%).
Asset categories and pricing
as of 2026-07-3199.67% debt, 0.33% short-term investment as filed; 0.3% 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 IBMP (957). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| BHYB Xtrackers USD High Yield BB-B ex Financials ETF | 1,478 | 903.4 | 4.4% | 2026-05-31 |
| ITM VanEck Intermediate Muni ETF | 1,369 | 905 | 3.9% | 2026-07-31 |
| IAGG iShares Core International Aggregate Bond ETF | 8,357 | 906 | 6.08% | 2026-07-31 |
| HYG iShares iBoxx $ High Yield Corporate Bond ETF | 1,322 | 907.5 | 3.57% | 2026-05-31 |
| BWX State Street(R) SPDR(R) Bloomberg International Treasury Bond ETF | 1,372 | 911.5 | 2.77% | 2026-06-30 |
| IBMQ iShares iBonds Dec 2028 Term Muni Bond ETF | 2,777 | 999.7 | 4.23% | 2026-07-31 |
| BNDX Vanguard Total International Bond Index Fund | 6,999 | 1088.6 | 4.54% | 2026-07-31 |
| SPHY State Street(R) SPDR(R) Portfolio High Yield Bond ETF | 1,935 | 1127.1 | 3.17% | 2026-06-30 |
| VCLT Vanguard Long-Term Corporate Bond Index Fund | 2,778 | 1211.8 | 3.25% | 2026-05-31 |
| VCIT Vanguard Intermediate-Term Corporate Bond Index Fund | 2,304 | 1226.6 | 2.69% | 2026-05-31 |
Essays that examine IBMP
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.