BBNX
Beta Bionics, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth +16.7% ·
share flow -4.7% ·
net new positions +14.3%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 3.90M | 0.0% | $56.68M | 0.0% | Held | 2 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 858.36K | n/a | $12.50M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | The Vanguard Group ✦ (passive) | 706.97K | n/a | $10.29M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 4 | Marshall Wace ✦ | 614.97K | -8.7% | $8.95M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 5 | Millennium Management ✦ | 542.20K | New | $7.89M | 0.0% | New | 1 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 539.96K | -42.9% | $7.86M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 317.94K | -50.0% | $4.63M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 8 | Geode Capital Management ✦ (passive) | 312.93K | +2.3% | $4.56M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 9 | State Street Global Advisors ✦ (passive) | 230.00K | +117.0% | $3.35M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | AQR Capital Management ✦ | 55.43K | New | $807,105 | 0.0% | New | 1 | SEC ↗ ×5 |
| 11 | Soros Fund Management ✦ | 25.00K | -3.7% | $364,000 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 21.30K | +2.6% | $310,070 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | Renaissance Technologies ✦ | 16.50K | New | $240,240 | 0.0% | New | 1 | SEC ↗ |
| 14 | Fidelity (FMR) ✦ | 16.38K | n/a | $238,449 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Millennium Management | $7.89M | 0.0% |
| AQR Capital Management | $807,105 | 0.0% |
| Renaissance Technologies | $240,240 | 0.0% |
Exited
| Point72 Asset Management | $4.46M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 129 holders, 49.02M shares, $491.50M 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.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 775 sh · $13,446
Officer · 370 sh · $7,015
Director · 6.43K sh · $147,890
Officer · 2.65K sh · $58,300
Officer · 30.78K sh · $619,640
Officer · 775 sh · $12,028
Officer · 36.87K sh · $680,723
Officer, Director · 5.64K sh · $113,259
Officer · 5.33K sh · $101,815
Officer · 4.22K sh · $80,676
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology