ZBIO
Zenas BioPharma, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth -10.0% ·
share flow -2.8% ·
net new positions -11.1%
· formula
Broad distribution: falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 58 | +3 | 32.34M | $814.38M | +8 | −5 |
| Q1 2026 | 57 | 0 | 27.25M | $547.68M | +9 | −9 |
| Q4 2025 | 56 | +4 | 18.00M | $649.25M | +4 | n/a |
| Q3 2025 | 12 | 0 | 9.51M | $211.12M | +1 | −1 |
| Q2 2025 | 10 | +3 | 7.80M | $75.56M | +3 | n/a |
| Q1 2025 | 4 | -5 | 2.01M | $15.92M | n/a | −5 |
| Q4 2024 | 9 | -1 | 2.55M | $20.73M | +1 | −2 |
| Q3 2024 | 9 | +9 | 2.41M | $40.14M | +9 | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 1.14M | -24.4% | $9.17M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 2 | T. Rowe Price ✦ | 511.22K | +5.0% | $4.19M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 3 | Geode Capital Management ✦ (passive) | 348.76K | +1303.1% | $2.86M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 4 | State Street Global Advisors ✦ (passive) | 211.51K | n/a | $1.73M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Millennium Management ✦ | 134.90K | +14.9% | $1.10M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 82.62K | -12.4% | $676,691 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Norges Bank ✦ (passive) | 66.20K | -11.7% | $542,194 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Renaissance Technologies ✦ | 38.40K | New | $314,496 | 0.0% | New | 1 | SEC ↗ |
| 9 | Two Sigma Investments ✦ | 17.05K | +31.1% | $139,599 | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $314,496 | 0.0% |
Exited
| Point72 Asset Management | $974,592 | was 0.0% |
| Soros Fund Management | $634,500 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 138 holders, 55.37M shares, $1.09B 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.