Amylyx Pharmaceuticals Ownership | Who Owns Amylyx Pharmaceuticals?
Amylyx Pharmaceuticals Ownership Summary
Amylyx Pharmaceuticals is owned by 122.91% institutional investors, 7.62% insiders. Fmr is the largest institutional shareholder, holding 12.77% of AMLX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.52% of its assets in Amylyx Pharmaceuticals shares.
AMLX Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Amylyx Pharmaceuticals | 122.91% | 7.62% | -30.54% |
| Sector | Healthcare Stocks | 42.53% | 10.81% | 46.67% |
| Industry | Biotech Stocks | 45.24% | 10.75% | 44.01% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Fmr | 11.38M | 12.77% | $154.64M |
| Perceptive advisors | 8.95M | 10.04% | $121.66M |
| Blackrock funding, inc. /de | 7.14M | 8.01% | $97.04M |
| Adage capital partners gp | 6.82M | 7.65% | $92.64M |
| Tcg crossover management | 6.24M | 7.00% | $84.85M |
| Vanguard group | 5.27M | 5.92% | $71.67M |
| Saturn v capital management | 4.60M | 5.17% | $62.58M |
| Commodore capital lp | 4.08M | 4.57% | $55.39M |
| Blackrock | 2.67M | 3.93% | $5.07M |
| First light asset management | 3.36M | 3.76% | $45.61M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Saturn v capital management | 4.60M | 13.72% | $62.58M |
| Allostery investments lp | 120.12K | 9.81% | $769.96K |
| Great point partners | 1.70M | 9.53% | $23.10M |
| Almitas capital | 2.12M | 6.60% | $28.85M |
| Acuta capital partners | 333.26K | 4.68% | $4.53M |
| First light asset management | 3.36M | 4.30% | $45.61M |
| Tcg crossover management | 6.24M | 4.17% | $84.85M |
| Boxer capital management | 900.00K | 3.90% | $12.23M |
| Ally bridge group (ny) | 437.39K | 3.62% | $5.94M |
| Perceptive advisors | 8.95M | 3.51% | $121.66M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 11.38M | 0.01% | 8.33M |
| Commodore capital lp | 4.08M | 2.70% | 4.08M |
| First light asset management | 3.36M | 4.30% | 3.36M |
| Paradigm biocapital advisors lp | 1.90M | 0.73% | 1.90M |
| Blackrock funding, inc. /de | 7.14M | 0.00% | 1.63M |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Nantahala capital management | 935.68K | 0.44% | -2.00M |
| Adage capital partners gp | 6.82M | 0.15% | -1.98M |
| Franklin resources | - | - | -1.86M |
| Blackrock | 2.67M | 0.00% | -1.80M |
| Point72 asset management | 2.79M | 0.06% | -1.75M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Commodore capital lp | 4.08M | 2.70% | 4.08M | $55.39M |
| First light asset management | 3.36M | 4.30% | 3.36M | $45.61M |
| Paradigm biocapital advisors lp | 1.90M | 0.73% | 1.90M | $25.82M |
| Eventide asset management | 1.51M | 0.34% | 1.51M | $20.55M |
| Logos global management lp | 1.45M | 1.77% | 1.45M | $19.71M |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -10.00 |
| Kelly financial services | -33.00 |
| Skopos labs | -42.00 |
| Raymond james financial | -104.00 |
| Fernwood investment management | -200.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2025 | 170 | 34.92% | 109,563,434 | 39.61% | 122 | 1.59% | 101 | 46.38% | 46 | 43.75% |
| Jun 30, 2025 | 131 | -2.96% | 81,652,437 | 17.21% | 91 | 1.39% | 70 | -12.50% | 35 | 12.90% |
| Mar 31, 2025 | 137 | 3.79% | 73,635,543 | 47.89% | 85 | 1.61% | 82 | 24.24% | 30 | -26.83% |
| Dec 31, 2024 | 130 | 12.07% | 49,788,210 | 14.69% | 73 | 1.80% | 65 | 18.18% | 40 | 14.29% |
| Sep 30, 2024 | 116 | -8.66% | 43,410,314 | -0.50% | 63 | 1.54% | 56 | -3.45% | 35 | -25.53% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.25M | 2.52% | -49.88K |
| iShares Russell 2000 ETF | 1.67M | 1.88% | - |
| Fidelity Select Biotechnology | 1.34M | 1.50% | - |
| Fidelity Small Cap Growth | 987.13K | 1.11% | 987.13K |
| Vanguard Small Cap Index | 646.02K | 0.95% | 1.52K |
| Vanguard Institutional Extnd Mkt Idx Tr | 779.02K | 0.87% | -356.52K |
| Fidelity Small Cap Index | 695.51K | 0.78% | 695.51K |
| Jupiter Merian Glb Eq AbsRet I USD Acc | 480.21K | 0.71% | 185.87K |
| Fidelity Small Cap Growth K6 | 492.63K | 0.55% | 492.63K |
| iShares Russell 2000 Growth ETF | 471.66K | 0.53% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Sep 30, 2025 | Klee Justin B. | Co-Chief Executive Officer | Sell | $3.00K |
| Sep 30, 2025 | Klee Justin B. | Co-Chief Executive Officer | Sell | $427.95K |
| Sep 30, 2025 | Mazzariello Gina | Chief Legal Officer | Sell | $128.67K |
| Sep 30, 2025 | FRATES JAMES M | Chief Financial Officer | Sell | $154.65K |
| Sep 30, 2025 | Cohen Joshua B | Co-Chief Executive Officer | Sell | $426.47K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 9 |
| 2025 Q2 | - | - |
| 2025 Q1 | 1 | 14 |
| 2024 Q4 | - | 1 |
| 2024 Q3 | 3 | 4 |
AMLX Ownership FAQ
Try Tickergate Pro Free
Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)
Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis
Discover trending investment themes
Find your next best investment
Research stocks using tools