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AMYLYX PHARM (AMLX)
NASDAQ
$17.45+$0.04 (+0.25%)
Price as of Jul 14, 2026 4:31 AM EDT- $2.0BMarket Cap
- 107.02%1-Year Change
- Drug Manufacturers - Specialty & GenericIndustry
AMYLYX PHARM (AMLX)
$17.45+$0.04 (+0.25%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
FMR LLC | 20.01% | 16.6M | +112,122 (+0.67%) | Mar 31, 2026 |
BLACKROCK, INC. | 10.62% | 8.8M | -225,595 (-2.56%) | Mar 31, 2026 |
PERCEPTIVE ADVISORS LLC | 9.97% | 8.3M | 0 (0.00%) | Mar 31, 2026 |
TCG CROSSOVER MANAGEMENT, LLC | 7.51% | 6.2M | 0 (0.00%) | Mar 31, 2026 |
VANGUARD GROUP INC | 6.98% | 5.8M | +531,162 (+9.15%) | Dec 31, 2025 |
COMMODORE CAPITAL LP | 6.80% | 5.7M | 0 (0.00%) | Mar 31, 2026 |
JANUS HENDERSON GROUP PLC | 6.00% | 5.0M | +520,201 (+10.43%) | Mar 31, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
FIDELITY SECURITIES FUND | 5.45% | 4.5M | +119,627 (+2.64%) | Apr 30, 2026 |
VANGUARD INDEX FUNDS | 4.85% | 4.0M | +39,649 (+0.98%) | Mar 31, 2026 |
FIDELITY ADVISOR SERIES VII | 3.79% | 3.1M | 0 (0.00%) | Apr 30, 2026 |
FIDELITY SELECT PORTFOLIOS | 3.49% | 2.9M | 0 (0.00%) | Apr 30, 2026 |
MUTUAL FUND SERIES TRUST | 1.82% | 1.5M | 0 (0.00%) | Mar 31, 2026 |
FRANKLIN STRATEGIC SERIES | 1.68% | 1.4M | +418,202 (+29.86%) | Apr 30, 2026 |
FIDELITY CAPITAL TRUST | 1.50% | 1.2M | +162,983 (+13.05%) | Apr 30, 2026 |
Current Ownership Distribution
- Institutions1.0B (80.73%)
- Mutual Funds228.5M (17.87%)
- Insiders18.0M (1.41%)
- Other0 (0.00%)
Insider Transactions
- 1.41% (18.0M)Current InsiderOwnership (%, shares)
- 1Number of InsiderBuying (last 12 months)
- $684,750.00Amount of InsiderBuying (last 12 months)
- 5Number of InsiderSelling (last 12 months)
- $482.6MAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Mazzariello Gina Chief Legal Officer | Sell | Jul 10, 2026 | $264,121.50 | 15,000 | $17.61 | 179,090 |
Mazzariello Gina Chief Legal Officer | Sell | Jul 09, 2026 | $274,746.00 | 15,000 | $18.32 | 194,090 |
Cohen Joshua B Co-Chief Executive Officer | Award | Mar 05, 2026 | $0.00 | 373,295 | $0.00 | 373,295 |
Mazzariello Gina Chief Legal Officer | Award | Mar 05, 2026 | $0.00 | 111,990 | $0.00 | 111,990 |
FRATES JAMES M Chief Financial Officer | Award | Mar 05, 2026 | $0.00 | 143,985 | $0.00 | 143,985 |
Klee Justin B. Co-Chief Executive Officer | Award | Mar 05, 2026 | $0.00 | 373,295 | $0.00 | 373,295 |
Cohen Joshua B Co-Chief Executive Officer | Award | Mar 05, 2026 | $0.00 | 248,865 | $0.00 | 3.6M |
Mazzariello Gina Chief Legal Officer | Award | Mar 05, 2026 | $0.00 | 74,660 | $0.00 | 209,090 |
FRATES JAMES M Chief Financial Officer | Award | Mar 05, 2026 | $0.00 | 95,990 | $0.00 | 261,628 |
Klee Justin B. Co-Chief Executive Officer | Award | Mar 05, 2026 | $0.00 | 248,865 | $0.00 | 3.6M |
Mazzariello Gina Chief Legal Officer | Sell | Mar 02, 2026 | $99,378.30 | 6,844 | $14.52 | 134,430 |
Klee Justin B. Co-Chief Executive Officer | Sell | Feb 02, 2026 | $227,617.50 | 15,500 | $14.69 | 3.4M |
Cohen Joshua B Co-Chief Executive Officer | Sell | Feb 02, 2026 | $227,592.70 | 15,500 | $14.68 | 3.4M |
FRATES JAMES M Chief Financial Officer | Sell | Feb 02, 2026 | $52,096.89 | 3,557 | $14.65 | 173,547 |
Mazzariello Gina Chief Legal Officer | Sell | Feb 02, 2026 | $50,515.61 | 3,448 | $14.65 | 144,693 |
Klee Justin B. Co-Chief Executive Officer | Exempt | Jan 16, 2026 | $0.00 | 2,847 | $0.00 | 0 |
Klee Justin B. Co-Chief Executive Officer | Exempt | Jan 16, 2026 | $21,551.79 | 2,847 | $7.57 | 3.4M |
Klee Justin B. Co-Chief Executive Officer | Sell | Jan 16, 2026 | $27,701.17 | 1,995 | $13.89 | 3.4M |
Klee Justin B. Co-Chief Executive Officer | Exempt | Jan 15, 2026 | $1.5M | 197,153 | $7.57 | 3.5M |
Klee Justin B. Co-Chief Executive Officer | Sell | Jan 15, 2026 | $1.8M | 136,193 | $13.58 | 3.4M |
Klee Justin B. Co-Chief Executive Officer | Exempt | Jan 15, 2026 | $0.00 | 197,153 | $0.00 | 2,847 |
MILNE GEORGE M JR | Gift | Jan 12, 2026 | $0.00 | 17,780 | $0.00 | 812,881 |
Klee Justin B. Co-Chief Executive Officer | Sell | Jan 06, 2026 | $85,589.44 | 7,715 | $11.09 | 3.3M |
Cohen Joshua B Co-Chief Executive Officer | Sell | Jan 06, 2026 | $85,596.38 | 7,715 | $11.09 | 3.3M |
FRATES JAMES M Chief Financial Officer | Sell | Jan 06, 2026 | $36,953.86 | 3,326 | $11.11 | 177,104 |
Firestone Karen | Buy | Dec 23, 2025 | $100,845.00 | 8,100 | $12.45 | 63,100 |
Mazzariello Gina Chief Legal Officer | Sell | Sep 30, 2025 | $128,668.98 | 8,828 | $14.58 | 148,141 |
Klee Justin B. Co-Chief Executive Officer | Sell | Sep 30, 2025 | $427,950.12 | 29,775 | $14.37 | 3.3M |
FRATES JAMES M Chief Financial Officer | Sell | Sep 30, 2025 | $154,650.42 | 10,558 | $14.65 | 280,430 |
Cohen Joshua B Co-Chief Executive Officer | Sell | Sep 30, 2025 | $426,469.34 | 29,733 | $14.34 | 3.3M |