GENB — Generate Biomedicines, Inc.
Price · 2026-02-27 → 2026-08-21
122 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 2026-02-27.
Performance
Technicals
Others in Healthcare
Measured signals that fired on GENB
| date | signal | measured base rate |
|---|---|---|
| 2026-07-13 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-06-26 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
| 2026-03-02 | Cluster buy: three or more insiders insider | +0.63% over 21 days · t = 1.84 · n = 3,050 not 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 |
|---|---|---|---|---|---|
| 2026-03-04 | Nally Michael Chief Executive Officer | Open-market purchase | 20.0K | 12.00 | 240.0K |
| 2026-03-02 | Flagship Pioneering Fund VI General Partner LLC | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | AFEYAN NOUBAR Director | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | Flagship Pioneering, LLC | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | Flagship Pioneering, LLC | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | Flagship Pioneering Fund VI General Partner LLC | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | Flagship Pioneering, LLC | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | AFEYAN NOUBAR Director | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | AFEYAN NOUBAR Director | Open-market purchase | 1.6M | 16.00 | 25.0M |
| 2026-03-02 | Flagship Pioneering Fund VI General Partner LLC | Open-market purchase | 1.6M | 16.00 | 25.0M |
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 |
|---|---|---|
| Flagship Pioneering, LLC | 783.4M | 62.7M |
| FMR LLC | 52.7M | 4.2M |
| Capital World Investors | 50.1M | 4.0M |
| BRAIDWELL LP | 44.9M | 3.6M |
| JPMORGAN CHASE & CO | 33.9M | 2.9M |
| ARCH Venture Management, LLC | 24.3M | 1.9M |
| HarbourVest Partners LLC | 21.5M | 1.7M |
| BAKER BROS. ADVISORS LP | 17.8M | 1.4M |
| HARVARD MANAGEMENT CO INC | 13.9M | 1.1M |
| NVIDIA CORP | 10.4M | 833.3K |
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 →
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