SPMB 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: 7.7% at a quoted market price (level 1), one issuer country.

The largest line in SPMB's filing is not a stock but State Street Institutional US Government Money Market Fund, a short-term position at 7.16% of net assets. Ten companies are 12.96% of the fund; the other 2,691 share the rest. Among the 15 mortgage-backed funds measured here, SPMB behaves like 157.5 holdings against a median of 157.5 — close to the median. Across 28 quarterly filings SPMB has become less concentrated: it behaved like 7.3 at 2019-09-30 and 157.5 at 2026-06-30. Between the 2026-03-31 and 2026-06-30 filings 76 positions were added and 31 dropped; 11.8% 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 2019-09-30 and 2026-06-30, SPMB went from behaving like 7.3 equally weighted positions to 157.5 — 2058% more, while its top ten went from 53.01% to 12.96% 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 2,701 positions in SPMB'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 SPMB's own filings, 84 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 84 months, which is roughly the distributions. Every month with the filing it came from: SPMB.json · all funds.

2,653 positions became 2,698: 76 added (10.2% of the fund at the later date), 31 dropped (5.7% at the earlier date). Half the sum of all weight changes, a turnover proxy: 11.8%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of SPMB compared this way, as a feed: changes.xml · all funds: filings received.

New: UMBS, TBA (0.59%), UMBS, TBA (0.43%), UMBS, TBA (0.42%), Government National Mortgage Association (0.41%), Government National Mortgage Association (0.39%), Freddie Mac (0.39%). Gone: UMBS, TBA (0.56%), Government National Mortgage Association (0.49%), UMBS, TBA (0.46%), Government National Mortgage Association (0.43%), UMBS, TBA (0.34%), Government National Mortgage Association (0.33%).

92.30% mortgage-backed, 7.70% short-term investment as filed; 7.7% 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 SPMB (157.5). Same filings, same arithmetic. Position in this list says nothing about which fund is better.