Amylyx Pharmaceuticals Ownership | Who Owns Amylyx Pharmaceuticals?
Amylyx Pharmaceuticals Ownership Summary
Amylyx Pharmaceuticals is owned by 91.60% institutional investors, 9.50% insiders. Adage capital partners gp is the largest institutional shareholder, holding 9.87% 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 | 91.60% | 9.50% | -1.10% |
| Sector | Healthcare Stocks | 488.30% | 11.08% | -399.38% |
| Industry | Biotech Stocks | 307.10% | 11.11% | -218.21% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Adage capital partners gp | 8.80M | 9.87% | $56.41M |
| Perceptive advisors | 7.90M | 8.87% | $50.65M |
| Tcg crossover management | 5.94M | 6.67% | $38.10M |
| Blackrock funding, inc. /de | 5.51M | 6.18% | $35.32M |
| Point72 asset management | 4.54M | 5.09% | $29.08M |
| Vanguard group | 2.69M | 3.95% | $10.18M |
| Blackrock | 2.67M | 3.93% | $5.07M |
| Saturn v capital management | 3.26M | 3.66% | $20.90M |
| Nantahala capital management | 2.93M | 3.29% | $18.81M |
| Goldman sachs group | 1.86M | 2.73% | $7.03M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Allostery investments lp | 120.12K | 9.81% | $769.96K |
| Saturn v capital management | 3.26M | 8.47% | $20.90M |
| Great point partners | 2.00M | 8.34% | $12.82M |
| Tcg crossover management | 5.94M | 4.35% | $38.10M |
| Almitas capital | 2.12M | 3.43% | $13.61M |
| Perceptive advisors | 7.90M | 1.88% | $50.65M |
| Aldebaran capital | 217.83K | 1.38% | $1.40M |
| Adar1 capital management | 1.21M | 1.18% | $7.72M |
| 683 capital management | 2.16M | 0.91% | $13.85M |
| Nantahala capital management | 2.93M | 0.74% | $18.81M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Point72 asset management | 4.54M | 0.06% | 3.62M |
| Blackrock funding, inc. /de | 5.51M | 0.00% | 3.12M |
| Adage capital partners gp | 8.80M | 0.10% | 3.10M |
| Driehaus capital management | 1.26M | 0.06% | 1.26M |
| Saturn v capital management | 3.26M | 8.47% | 834.13K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Franklin resources | - | - | -1.86M |
| Blackrock | 2.67M | 0.00% | -1.80M |
| Abrdn | 738.66K | 0.01% | -1.69M |
| Boxer capital | - | - | -1.50M |
| Farallon capital management | - | - | -1.15M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Driehaus capital management | 1.26M | 0.06% | 1.26M | $8.11M |
| Parkman healthcare partners | 650.00K | 0.48% | 650.00K | $4.17M |
| J. goldman & co lp | 258.60K | 0.04% | 258.60K | $1.66M |
| Wellington management group llp | 209.71K | 0.00% | 209.71K | $792.70K |
| Dimensional fund advisors lp | 54.11K | - | 54.11K | $204.55K |
Sold Out
| Holder | Change |
|---|---|
| Nelson, van denburg & campbell wealth management group | -10.00 |
| Kelly financial services | -33.00 |
| Gamma investing | -35.00 |
| Fernwood investment management | -200.00 |
| Redwood wealth management group | -200.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Jun 30, 2024 | 127 | -28.25% | 43,627,452 | -12.05% | 64 | 1.19% | 58 | -33.33% | 47 | -2.08% |
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