SPMB
State Street SPDR Portfolio Mortgage Backed Bond ETF · Financial Services · Asset Management - Bonds
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 42 | +3 | 243.60M | $5.43B | +4 | −1 |
| Q1 2026 | 40 | +1 | 243.01M | $5.44B | +5 | −4 |
| Q4 2025 | 39 | -2 | 237.87M | $5.33B | — | −2 |
| Q3 2025 | 6 | 0 | 7.90M | $177.32M | +1 | −1 |
| Q2 2025 | 4 | 0 | 6.83M | $151.01M | — | — |
| Q1 2025 | 2 | -1 | 4.17M | $91.90M | — | −1 |
| Q4 2024 | 3 | -1 | 4.86M | $104.76M | — | −1 |
| Q3 2024 | 3 | +1 | 277.10K | $6.24M | +1 | — |
| Q2 2024 | 2 | — | 184.80K | $3.99M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 4.42M | — | $95.25M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Citadel Advisors ✦ | 269.23K | +127.8% | $5.80M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | Fisher Asset Management ✦ | 172.11K | +16.0% | $3.71M | 0.0% | ▲ Add | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Renaissance Technologies | $237,421 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 238 holders, 284.46M shares, $6.30B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.