BRK-B
Berkshire Hathaway Inc. · Financial Services · Insurance - Diversified
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -24.2% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2026
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 5 | 0 | 6.39M | $3.18B | n/a | n/a |
| Q2 2026 | 182 | 0 | 713.71M | $356.94B | +3 | −5 |
| Q1 2026 | 187 | +1 | 714.06M | $342.13B | +4 | −4 |
| Q4 2025 | 185 | 0 | 754.93M | $377.49B | +1 | n/a |
| Q3 2025 | 29 | +2 | 493.83M | $248.21B | +2 | −1 |
| Q2 2025 | 25 | 0 | 439.59M | $213.47B | n/a | n/a |
| Q1 2025 | 22 | -1 | 156.92M | $83.52B | n/a | −1 |
| Q4 2024 | 23 | 0 | 155.13M | $70.29B | n/a | n/a |
| Q3 2024 | 22 | -1 | 85.95M | $39.51B | +1 | −2 |
| Q2 2024 | 23 | n/a | 90.81M | $36.91B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | 4.56M | -31.9% | $2.27B | 2.3% | ▼ Trim | 4 | SEC ↗ |
| 2 | Wealth Enhancement Advisory… | 798.55K | +10.4% | $397.72M | 0.6% | ▲ Add | 4 | SEC ↗ |
| 3 | Robeco Institutional Asset… | 385.52K | +5.3% | $191.97M | 0.2% | ▲ Add | 4 | SEC ↗ |
| 4 | TD Waterhouse Canada Inc. | 374.93K | -2.7% | $187.81M | 0.5% | ▼ Trim | 4 | SEC ↗ |
| 5 | Assetmark, Inc | 267.49K | +6.8% | $133.20M | 0.2% | ▲ 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
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 4,794 holders, 892.44M shares, $414.66B 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.