BFLY — Butterfly Network, Inc.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2020-07-13.
Performance
Technicals
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Measured signals that fired on BFLY
| date | signal | measured base rate |
|---|---|---|
| 2026-08-10 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-08-10 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-16 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-07-08 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
| 2026-06-18 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-06-12 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-17 | ROBBINS LARRY Director | Open-market sale | 582.5K | 8.97 | 5.2M |
| 2026-08-14 | ROBBINS LARRY Director | Open-market sale | 824.7K | 8.70 | 7.2M |
| 2026-08-14 | Phanstiel S. Louise Director | Open-market purchase | 115.2K | 8.68 | 999.5K |
| 2026-08-13 | ROBBINS LARRY Director | Open-market sale | 500.0K | 9.24 | 4.6M |
| 2026-08-13 | ROBBINS LARRY Director | Open-market sale | 215.2K | 9.54 | 2.1M |
| 2026-08-13 | ROBBINS LARRY Director | Open-market sale | 175.3K | 8.86 | 1.6M |
| 2026-08-11 | Caezza Nicholas Deputy General Counsel | Open-market sale | 10.0K | 9.75 | 97.5K |
| 2026-08-10 | DEVIVO JOSEPH President & CEO | Open-market sale 10b5-1 plan | 68.3K | 10.01 | 684.1K |
| 2026-08-03 | ROBBINS LARRY Director | Open-market sale | 156.2K | 8.10 | 1.3M |
| 2026-07-31 | ROBBINS LARRY Director | Open-market sale | 1.7M | 7.39 | 12.7M |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 64.5M | 16.0M |
| GLENVIEW CAPITAL MANAGEMENT, LLC | 57.9M | 14.3M |
| Fosun International Ltd | 43.3M | 10.7M |
| Hood River Capital Management LLC | 34.8M | 8.6M |
| VANGUARD CAPITAL MANAGEMENT LLC | 33.1M | 8.2M |
| STATE STREET CORP | 22.4M | 5.5M |
| ARK Investment Management LLC | 21.1M | 5.2M |
| GEODE CAPITAL MANAGEMENT, LLC | 19.4M | 4.8M |
| AWM Investment Company, Inc. | 17.9M | 4.4M |
| BANK OF AMERICA CORP /DE/ | 16.8M | 4.2M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
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