MBX — MBX Biosciences, Inc.
Price · 2024-09-13 → 2026-08-21
486 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 2024-09-13.
Performance
Technicals
Others in Healthcare
Measured signals that fired on MBX
| date | signal | measured base rate |
|---|---|---|
| 2026-08-04 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-06 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-22 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-05-11 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-05-08 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-04-29 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 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 |
|---|---|---|---|---|---|
| 2026-08-04 | Azoulay Salomon Chief Medical Officer | Open-market sale | 370 | 65.77 | 24.3K |
| 2026-08-03 | Smither John W Chief Financial Officer | Grant or award | 28.0K | 0.00 | 0 |
| 2026-08-03 | Hoerter Steven L. President and CEO | Grant or award | 71.0K | 0.00 | 0 |
| 2026-05-08 | Azoulay Salomon Chief Medical Officer | Open-market sale 10b5-1 plan | 55.0K | 38.38 | 2.1M |
| 2026-05-08 | Azoulay Salomon Chief Medical Officer | Option exercise 10b5-1 plan | 55.0K | 10.46 | 575.3K |
| 2026-05-08 | Azoulay Salomon Chief Medical Officer | Open-market sale 10b5-1 plan | 15.0K | 38.30 | 574.6K |
| 2026-05-08 | Azoulay Salomon Chief Medical Officer | Option exercise 10b5-1 plan | 15.0K | 16.00 | 240.0K |
| 2026-05-06 | Hawryluk P. Kent President & CEO | Open-market sale | 607 | 29.54 | 17.9K |
| 2026-05-06 | Azoulay Salomon Chief Medical Officer | Open-market sale | 231 | 29.54 | 6.8K |
| 2026-05-01 | Hoerter Steven L. Director | Grant or award | 11.9K | 0.00 | 0 |
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 |
|---|---|---|
| Frazier Life Sciences Management, L.P. | 198.6M | 6.7M |
| ORBIMED ADVISORS LLC | 108.6M | 3.6M |
| NEA Management Company, LLC | 107.9M | 3.6M |
| WELLINGTON MANAGEMENT GROUP LLP | 95.3M | 3.2M |
| BlackRock, Inc. | 87.8M | 2.9M |
| FMR LLC | 87.7M | 2.9M |
| Deep Track Capital, LP | 82.3M | 2.8M |
| NVP ASSOCIATES, LLC | 63.8M | 2.1M |
| Polar Capital Holdings Plc | 48.4M | 1.6M |
| BRAIDWELL LP | 44.6M | 1.5M |
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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