AMLX — Amylyx Pharmaceuticals, 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 2022-01-07.
Performance
Technicals
Others in Healthcare
Measured signals that fired on AMLX
| date | signal | measured base rate |
|---|---|---|
| 2026-08-14 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-08-05 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 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 |
| 2026-08-03 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-07-28 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-06-29 | 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 |
|---|---|---|---|---|---|
| 2026-08-18 | Klee Justin B. Co-Chief Executive Officer | Grant or award | 60.0K | 0.00 | 0 |
| 2026-08-18 | Cohen Joshua B Co-Chief Executive Officer | Grant or award | 60.0K | 0.00 | 0 |
| 2026-08-18 | Bedrosian Camille L Chief Medical Officer | Grant or award | 22.8K | 0.00 | 0 |
| 2026-08-18 | FRATES JAMES M Chief Financial Officer | Grant or award | 22.8K | 0.00 | 0 |
| 2026-08-18 | Mazzariello Gina Chief Legal Officer | Grant or award | 21.3K | 0.00 | 0 |
| 2026-07-10 | Mazzariello Gina Chief Legal Officer | Open-market sale 10b5-1 plan | 15.0K | 17.61 | 264.1K |
| 2026-07-09 | Mazzariello Gina Chief Legal Officer | Open-market sale 10b5-1 plan | 15.0K | 18.32 | 274.7K |
| 2026-05-21 | Firestone Karen Director | Open-market purchase | 3.8K | 13.51 | 51.3K |
| 2026-03-05 | Mazzariello Gina Chief Legal Officer | Grant or award | 74.7K | 0.00 | 0 |
| 2026-03-05 | Cohen Joshua B Co-Chief Executive Officer | Grant or award | 248.9K | 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 |
|---|---|---|
| FMR LLC | 231.2M | 16.6M |
| BlackRock, Inc. | 122.7M | 8.8M |
| PERCEPTIVE ADVISORS LLC | 115.2M | 8.3M |
| TCG Crossover Management, LLC | 86.8M | 6.2M |
| Commodore Capital LP | 78.5M | 5.7M |
| JANUS HENDERSON GROUP PLC | 69.3M | 5.0M |
| Saturn V Capital Management LP | 60.5M | 4.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | 57.6M | 4.1M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 49.5M | 3.6M |
| First Light Asset Management, LLC | 44.3M | 3.2M |
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
- Benzinga Bulls and Bears: Ross, Moderna, Webull · 2026-08-22 · benzinga
- Why Amylyx Pharmaceuticals Blasted Nearly 79% Higher This Week · 2026-08-21
- Amylyx Pharmaceuticals, Inc. (AMLX) filed form 8-K · 2026-08-20 · SEC EDGAR
- Amylyx Pharmaceuticals prices upsized $500M public offering of common stock · 2026-08-20
- Why Amylyx Pharmaceuticals Stock Skyrocketed Today · 2026-08-18
- Why is Amylyx Pharmaceuticals stock surging today? · 2026-08-18
Ask the AI about AMLX
The assistant reads every block on this page — price history, filings, insider transactions, institutional positions, short volume, macro and the measured base rates — and says what it implies, quoting the number behind each claim and declaring what it does not have.
Everything on this page is live in the terminal.
Charts, filings, insider flow and the AI — open without an account.
Free plan for good. Pro is $69.99/mo, or $4.99 for a 7-day trial. See the plans →