JMBS holdings

Computed 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: 0.09% at a quoted market price (level 1), one issuer country, 12.58% restricted securities.

JMBS's largest investment is Umbs, Single Family, 30 Year at 19.96% of net assets. Gnma II, Single Family, 30 Year and Umbs, Single Family, 30 Year follow; the three together are 35.54%. Ten companies are 35.52% of the fund; the other 613 share the rest. Among the 15 mortgage-backed funds measured here, JMBS behaves like 44.8 holdings against a median of 157.5 — 3.6 times more concentrated than the median. Across 27 quarterly filings JMBS has held roughly steady since 2019-10-31 (35 then, 40.8 now). Between the 2026-01-31 and 2026-04-30 filings 84 positions were added and 76 dropped; 54.8% 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.

Between 2019-10-31 and 2026-04-30, JMBS went from behaving like 35 equally weighted positions to 40.8 — 17% more, while its top ten went from 43.56% to 34.44% of net assets. Read across the funds on the concentration-over-time table.

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.

The 15 largest of 623 positions in JMBS's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: JMBS.csv.gz.

Monthly total returns from Item B.5 of JMBS'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 0.07 percentage points over 81 months, which is roughly the distributions. Every month with the filing it came from: JMBS.json · all funds.

The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-07-31, $755,408 was out to 1 borrower.

The filing reports no cash collateral position against this loan. Collateral taken in a form the fund does not hold as a position does not appear in N-PORT, so this is silence rather than absence. What the collateral figure can and cannot show. Every quarter JMBS has filed, with each borrower: JMBS.json · all funds.

631 positions became 639: 84 added (53.8% of the fund at the later date), 76 dropped (53.4% at the earlier date). Half the sum of all weight changes, a turnover proxy: 54.8%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of JMBS compared this way, as a feed: changes.xml · all funds: filings received.

New: FNMA or FHLMC (12.04%), GNMA (5.55%), FNMA or FHLMC (3.85%), FNMA or FHLMC (2.63%), FNMA or FHLMC (2.42%), FNMA or FHLMC (1.85%). Gone: FNMA or FHLMC (11.13%), GNMA (5.42%), FNMA or FHLMC (4.18%), GNMA (3.55%), FNMA or FHLMC (3.06%), FNMA or FHLMC (2.65%).

0.1% of JMBS is carried at a quoted market price (fair-value level 1). 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.

A 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 $6.62B. 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).

Every measured mortgage-backed fund lined up by how many holdings it behaves like; these sit either side of JMBS (44.8). Same filings, same arithmetic. Position in this list says nothing about which fund is better.