Fund · JPMorgan Mortgage-Backed Securities ETF · measured from SEC filings
JMTG holdings
JMTG reports 2,556 holdings and behaves like 295.6 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-05-31. The fact sheet publishes the first number; this page computes the second, and traces it across 4 quarters of filings.
Measured concentration
as of 2026-05-31Computed 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: 3.85% at a quoted market price (level 1), 5 issuer countries, 23.08% restricted securities.
What stands out
as of 2026-05-31The largest line in JMTG's filing is not a stock but JPMorgan Prime Money Market Fund, Class IM, a short-term position at 3.95% of net assets. Ten companies are 11.54% of the fund; the other 2,546 share the rest. Among the 15 mortgage-backed funds measured here, JMTG behaves like 295.6 holdings against a median of 157.5 — 1.9 times the median. Across 4 quarterly filings JMTG has become more concentrated: it behaved like 379.2 at 2025-08-31 and 295.6 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 93 positions were added and 35 dropped; 13.7% of the weight moved.
Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable mortgage-backed funds on this site. Nothing here is a view on the fund.
Every filing since 2025
4Between 2025-08-31 and 2026-05-31, JMTG went from behaving like 379.2 equally weighted positions to 295.6 — 22% fewer, while its top ten went from 9.23% to 11.54% of net assets. Read across the funds on the concentration-over-time table.
| Period | Holdings | Effective | Top 10 | Largest |
|---|---|---|---|---|
| 2026-05-31 | 2,556 | 295.6 | 11.54% | 3.82% |
| 2026-02-28 | 2,496 | 409.2 | 9.02% | 2.9% |
| 2025-11-30 | 2,467 | 327 | 9.9% | 3.83% |
| 2025-08-31 | 2,433 | 379.2 | 9.23% | 3.21% |
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 2026-05-31The 15 largest of 2,556 positions in JMTG's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: JMTG.csv.gz.
| # | Position | Weight | Cumulative |
|---|---|---|---|
| 1 | JPMorgan Prime Money Market Fund | 3.82% | 3.8% |
| 2 | FNMA/FHLMC | 2.10% | 5.9% |
| 3 | FNMA/FHLMC | 1.24% | 7.2% |
| 4 | United States of America | 1.15% | 8.3% |
| 5 | FNMA | 0.63% | 8.9% |
| 6 | FNMA | 0.57% | 9.5% |
| 7 | United States of America | 0.55% | 10.1% |
| 8 | FNMA | 0.51% | 10.6% |
| 9 | FNMA | 0.49% | 11.1% |
| 10 | United States of America | 0.47% | 11.5% |
| 11 | GNMA | 0.46% | 12.0% |
| 12 | FNMA | 0.43% | 12.4% |
| 13 | CFIN 2022-RTL1 Issuer LLC | 0.35% | 12.8% |
| 14 | FNMA | 0.31% | 13.1% |
| 15 | FNMA | 0.31% | 13.4% |
By country of issuer
as of 2026-05-31Share of JMTG's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.
| Country | Share |
|---|---|
| United States | 99.22% |
| Jersey° | 0.31% |
| Cayman Islands° | 0.23% |
| United Kingdom | 0.16% |
| Spain | 0.08% |
Returns the fund reported
2025-06 – 2026-05Monthly total returns from Item B.5 of JMTG's own filings, 12 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: JMTG.json · all funds.
Since the previous filing
2026-02-28 → 2026-05-312,478 positions became 2,536: 93 added (12.4% of the fund at the later date), 35 dropped (3.8% at the earlier date). Half the sum of all weight changes, a turnover proxy: 13.7%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of JMTG compared this way, as a feed: changes.xml · all funds: filings received.
| Largest increases | 2026-02-28 | 2026-05-31 | Largest decreases | 2026-02-28 | 2026-05-31 |
|---|---|---|---|---|---|
| JPMorgan Prime Money Market Fund | 2.90% | 3.82% | United States of America | 1.30% | 1.15% |
| Triad Holdings III LLC | 0.19% | 0.24% | FNMA | 0.72% | 0.63% |
| Brean Asset-Backed Securities Trust | 0.08% | 0.12% | FNMA | 0.38% | 0.31% |
| Toorak Mortgage Trust | 0.02% | 0.07% | United States of America | 0.62% | 0.55% |
| Towd Point Mortgage Trust | 0.16% | 0.21% | GNMA | 0.52% | 0.46% |
| Center Street Lending Resi-Investor ABS Mortgage Trust | 0.10% | 0.14% | FNMA | 0.55% | 0.49% |
New: FNMA/FHLMC (2.10%), FNMA/FHLMC (1.24%), FNMA (0.57%), United States of America (0.47%), FNMA (0.43%), GNMA (0.29%). Gone: FNMA/FHLMC (1.15%), FNMA (0.29%), FNMA (0.25%), FNMA (0.24%), FNMA (0.23%), AMSR Trust (0.19%).
Asset categories and pricing
as of 2026-05-31| Asset category (as filed) | Share of investments |
|---|---|
| mortgage-backed ABS-MBS | 80.33% |
| ABS-O ABS-O | 12.08% |
| short-term investment STIV | 3.82% |
| debt DBT | 3.61% |
| CDO/CLO ABS-CBDO | 0.13% |
| DIR DIR | 0.03% |
3.9% of JMTG is carried at a quoted market price (fair-value level 1); 7.7% at level 3, priced from the filer's own inputs. Categories and levels are the filer's, from Form N-PORT; what a low level-1 share does and does not mean is in the measure's page.
Derivative exposure and counterparties
as of 2026-05-31A 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 $6.92B. 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, mortgage-backed funds
9Every measured mortgage-backed fund lined up by how many holdings it behaves like; these sit either side of JMTG (295.6). Same filings, same arithmetic. Position in this list says nothing about which fund is better.
| Fund | Reports | Behaves like | Top ten | As of |
|---|---|---|---|---|
| CRUX Columbia Core Bond ETF | 477 | 115.9 | 18.12% | 2026-06-30 |
| HTRB Hartford Total Return Bond ETF | 1,766 | 139.7 | 21.98% | 2026-07-31 |
| SPMB State Street(R) SPDR(R) Portfolio Mortgage Backed Bond ETF | 2,701 | 157.5 | 12.96% | 2026-06-30 |
| EVMO Eaton Vance Mortgage Opportunities ETF | 717 | 173.4 | 13.88% | 2026-06-30 |
| MBB iShares MBS ETF | 11,146 | 187.7 | 12.45% | 2026-05-31 |
| CARY Angel Oak Income ETF | 794 | 296.5 | 11.07% | 2026-07-31 |
| JPIE JPMorgan Income ETF | 2,539 | 306.4 | 12.99% | 2026-05-31 |
| VMBS Vanguard Mortgage-Backed Securities Index Fund | 5,113 | 326.7 | 7.69% | 2026-05-31 |
| SMBS Schwab Mortgage-Backed Securities ETF | 4,197 | 984.5 | 4.35% | 2026-05-31 |
Essays that examine JMTG
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.