MTBA 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: 49.64% at a quoted market price (level 1), one issuer country.

The largest line in MTBA's filing is not a stock but Simplify Government Money Market ETF, a equity position at 94.59% of net assets. Ten companies are 99.11% of the fund; the other 3 share the rest. Among the 15 mortgage-backed funds measured here, MTBA behaves like 3.7 holdings against a median of 157.5 — 50.0 times more concentrated than the median. Across 11 quarterly filings MTBA has become less concentrated: it behaved like 2.8 at 2023-12-31 and 3.7 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 11 positions were added and 7 dropped; 53.0% 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 2023-12-31 and 2026-06-30, MTBA went from behaving like 2.8 equally weighted positions to 3.7 — 32% more, while its top ten went from 100% to 99.11% 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 13 largest of 13 positions in MTBA's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: MTBA.csv.gz.

Monthly total returns from Item B.5 of MTBA's own filings, 32 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: MTBA.json · all funds.

9 positions became 13: 11 added (53.0% of the fund at the later date), 7 dropped (52.9% at the earlier date). Half the sum of all weight changes, a turnover proxy: 53.0%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of MTBA compared this way, as a feed: changes.xml · all funds: filings received.

New: FEDERAL NATIONAL MORTGAGE ASSOCIATION (13.53%), FEDERAL NATIONAL MORTGAGE ASSOCIATION (11.96%), FEDERAL NATIONAL MORTGAGE ASSOCIATION (9.32%), FEDERAL NATIONAL MORTGAGE ASSOCIATION (6.76%), FEDERAL NATIONAL MORTGAGE ASSOCIATION (4.09%), FEDERAL NATIONAL MORTGAGE ASSOCIATION (2.81%). Gone: Federal National Mortgage Association (20.73%), Federal National Mortgage Association (20.38%), Federal National Mortgage Association (8.20%), United States Treasury Bills (2.10%), United States Treasury Bills (0.76%), United States Treasury Bills (0.47%).

49.6% of MTBA 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.

Every measured mortgage-backed fund lined up by how many holdings it behaves like; these sit either side of MTBA (3.7). Same filings, same arithmetic. Position in this list says nothing about which fund is better.