MUB
iShares National Muni Bond ETF · Financial Services · Asset Management - Bonds
Momentum inputs (comparable managers):
holder breadth -14.3% ·
share flow +29.7% ·
net new positions -16.7%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 82 | +2 | 251.95M | $27.11B | +5 | −3 |
| Q1 2026 | 81 | -5 | 242.13M | $25.70B | +2 | −7 |
| Q4 2025 | 86 | -1 | 225.67M | $24.17B | +1 | −2 |
| Q3 2025 | 14 | +1 | 55.17M | $5.87B | +1 | — |
| Q2 2025 | 10 | +1 | 28.35M | $2.96B | +1 | — |
| Q1 2025 | 6 | -1 | 9.97M | $1.05B | — | −1 |
| Q4 2024 | 7 | 0 | 7.69M | $818.85M | — | — |
| Q3 2024 | 7 | +1 | 6.03M | $654.94M | +1 | — |
| Q2 2024 | 6 | — | 5.31M | $566.22M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fisher Asset Management ✦ | 6.24M | +8.5% | $657.50M | 0.3% | ▲ Add | 4 | SEC ↗ |
| 2 | D. E. Shaw & Co. ✦ | 3.20M | +135.6% | $337.05M | 0.4% | ▲ Add | 3 | SEC ↗ |
| 3 | Renaissance Technologies ✦ | 264.20K | +172.3% | $27.86M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Soros Fund Management ✦ | 241.40K | 0.0% | $25.45M | 0.6% | Held | 4 | SEC ↗ |
| 5 | Millennium Management ✦ | 17.80K | +645.6% | $1.88M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | AQR Capital Management ✦ | 13.29K | +21.2% | $1.40M | 0.0% | ▲ Add | 4 | 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
| Citadel Advisors | $24.61M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,607 holders, 350.22M shares, $34.62B 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.