BFLY
Butterfly Network, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -12.5% ·
share flow +1.1% ·
net new positions -14.3%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | 0 | 38.16K | $307,683 | n/a | n/a |
| Q2 2026 | 91 | +3 | 107.33M | $903.18M | +8 | −6 |
| Q1 2026 | 92 | +7 | 95.54M | $385.81M | +13 | −6 |
| Q4 2025 | 84 | +2 | 92.11M | $328.02M | +2 | n/a |
| Q3 2025 | 16 | -1 | 60.81M | $112.78M | +1 | −2 |
| Q2 2025 | 14 | -2 | 67.72M | $130.72M | n/a | −2 |
| Q1 2025 | 13 | 0 | 42.33M | $91.17M | n/a | n/a |
| Q4 2024 | 13 | +3 | 32.38M | $93.71M | +3 | n/a |
| Q3 2024 | 9 | -1 | 28.48M | $46.21M | +1 | −2 |
| Q2 2024 | 10 | n/a | 27.10M | $20.74M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 14.03M | n/a | $28.06M | 0.0% | n/c | 1 | SEC ↗ ×8 |
| 2 | The Vanguard Group ✦ (passive) | 10.59M | n/a | $21.17M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | Glenview Capital ✦ | 11.67M | 0.0% | $20.01M | 0.6% | Held | 5 | SEC ↗ ×2 |
| 4 | Capital World Investors ✦ | 8.49M | 0.0% | $16.97M | 0.0% | Held | 3 | SEC ↗ |
| 5 | ARK Investment Management ✦ | 6.42M | -8.7% | $12.83M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 6 | State Street Global Advisors ✦ (passive) | 5.12M | +44.4% | $10.25M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Geode Capital Management ✦ (passive) | 4.34M | +114.7% | $8.68M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 8 | Citadel Advisors ✦ | 2.71M | +33.3% | $5.41M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 9 | Millennium Management ✦ | 2.18M | -42.4% | $4.36M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 10 | Two Sigma Investments ✦ | 771.11K | +8.4% | $1.54M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | Renaissance Technologies ✦ | 505.75K | +21.5% | $1.01M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 12 | T. Rowe Price ✦ | 141.47K | +212.3% | $283,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 41.54K | n/a | $83,089 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 14 | D. E. Shaw & Co. ✦ | 723.00K | -46.6% | $43,598 | 0.0% | ▼ Trim | 5 | 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
| Marshall Wace | $2.79M | was 0.0% |
| Gotham Asset Management | $29,022 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 237 holders, 138.33M shares, $545.92M 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)
Director · 115.20K sh @ 8.68 · $999,510
Open-market sales (S)
Officer, Director · 35.79K sh · $358,616
Officer · 10.11K sh · $88,447
Officer, Director · 3.17K sh · $31,757
Officer, Director · 2.81K sh · $28,110
Officer · 13.80K sh · $100,797
Officer · 140.11K sh · $1.02M
Officer · 1.71K sh · $13,927
Director · 582.50K sh · $5.23M
Director · 824.70K sh · $7.17M
Director · 500.00K sh · $4.62M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
4.8% of class · View original SEC filing ↗
0.3% of class · View original SEC filing ↗
0.4% of class · View original SEC filing ↗
0.4% of class · View original SEC filing ↗