BFLY
Butterfly Network, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +4.0% ·
net new positions +20.0%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| 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 | Glenview Capital ✦ | 11.67M | 0.0% | $31.28M | 0.8% | Held | 3 | SEC ↗ ×2 |
| 2 | ARK Investment Management ✦ | 6.01M | -30.7% | $18.76M | 0.2% | ▼ Trim | 3 | SEC ↗ |
| 3 | State Street Global Advisors ✦ (passive) | 2.66M | n/a | $8.29M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Citadel Advisors ✦ | 2.24M | +139.6% | $6.95M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 5 | Millennium Management ✦ | 2.16M | +133.6% | $6.74M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 1.75M | +1.8% | $5.47M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 7 | D. E. Shaw & Co. ✦ | 2.42M | +8.0% | $5.40M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 8 | Capital World Investors ✦ | 1.36M | New | $4.24M | 0.0% | New | 1 | SEC ↗ |
| 9 | Renaissance Technologies ✦ | 1.00M | -52.1% | $3.12M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 10 | Two Sigma Investments ✦ | 637.47K | +392.1% | $1.99M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | Marshall Wace ✦ | 370.28K | New | $1.16M | 0.0% | New | 1 | SEC ↗ ×2 |
| 12 | Gotham Asset Management ✦ | 53.93K | New | $168,265 | 0.0% | New | 1 | SEC ↗ |
| 13 | T. Rowe Price ✦ | 45.30K | -45.7% | $142,000 | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Capital World Investors | $4.24M | 0.0% |
| Marshall Wace | $1.16M | 0.0% |
| Gotham Asset Management | $168,265 | 0.0% |
Exited
| No tracked exits this quarter. |
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 ↗