VMBS 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: 4.87% at a quoted market price (level 1), one issuer country.

VMBS's largest investment is Vanguard Market Liquidity Fund at 5.08% of net assets. Fncl 2 6/26 and G2sf 5.5 7/26 follow; the three together are 5.97%. Ten companies are 7.69% of the fund; the other 5,103 share the rest. Among the 15 mortgage-backed funds measured here, VMBS behaves like 326.7 holdings against a median of 157.5 — 2.1 times the median. Across 27 quarterly filings VMBS has become less concentrated: it behaved like 84.8 at 2019-11-30 and 326.7 at 2026-05-31. Between the 2026-02-28 and 2026-05-31 filings 139 positions were added and 37 dropped; 10.7% 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.

Between 2019-11-30 and 2026-05-31, VMBS went from behaving like 84.8 equally weighted positions to 326.7 — 285% more, while its top ten went from 17.04% to 7.69% 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 5,113 positions in VMBS's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: listed with the point-in-time files, available on request.

Monthly total returns from Item B.5 of VMBS'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 0.04 percentage points over 81 months, which is roughly the distributions. Every month with the filing it came from: VMBS.json · all funds.

5,009 positions became 5,111: 139 added (8.9% of the fund at the later date), 37 dropped (3.4% at the earlier date). Half the sum of all weight changes, a turnover proxy: 10.7%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of VMBS compared this way, as a feed: changes.xml · all funds: filings received.

New: Fannie Mae or Freddie Mac (0.50%), Ginnie Mae II Pool (0.35%), Ginnie Mae II Pool (0.30%), Fannie Mae Pool (0.28%), Ginnie Mae II Pool (0.28%), Freddie Mac Pool (0.26%). Gone: Ginnie Mae II Pool (0.43%), Fannie Mae or Freddie Mac (0.42%), Fannie Mae or Freddie Mac (0.33%), Fannie Mae or Freddie Mac (0.31%), Fannie Mae or Freddie Mac (0.25%), Fannie Mae or Freddie Mac (0.21%).

95.13% mortgage-backed, 4.87% short-term investment as filed; 4.9% 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.

Every measured mortgage-backed fund lined up by how many holdings it behaves like; these sit either side of VMBS (326.7). Same filings, same arithmetic. Position in this list says nothing about which fund is better.