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 | 488.17% | 11.08% | -399.26% |
| Industry | Biotech Stocks | 306.59% | 11.10% | -217.69% |
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 | 1.64M | 1.84% | -31.08K |
| Fidelity Select Biotechnology | 1.34M | 1.50% | 126.30K |
| Vanguard Small Cap Index | 646.02K | 0.95% | 1.52K |
| Vanguard Institutional Extnd Mkt Idx Tr | 779.02K | 0.87% | -356.52K |
| Jupiter Merian Glb Eq AbsRet I USD Acc | 480.21K | 0.71% | 185.87K |
| iShares Russell 2000 Growth ETF | 471.66K | 0.53% | - |
| Vanguard Small Cap Growth Index Inv | 357.96K | 0.53% | -1.58K |
| Invesco Dorsey Wright SmallCap Momt ETF | 449.30K | 0.50% | - |
| Schwab Small-Cap Equity | 331.23K | 0.49% | 240.56K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 13, 2025 | Mazzariello Gina | Chief Legal Officer | Sell | $125.05K |
| Aug 12, 2025 | Mazzariello Gina | Chief Legal Officer | Sell | $121.10K |
| Mar 31, 2025 | FRATES JAMES M | Chief Financial Officer | Sell | $37.81K |
| Mar 31, 2025 | Bedrosian Camille L | Chief Medical Officer | Sell | $43.08K |
| Mar 31, 2025 | Mazzariello Gina | Chief Legal Officer | Sell | $31.95K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 2 |
| 2025 Q2 | - | - |
| 2025 Q1 | 1 | 14 |
| 2024 Q4 | - | 1 |
| 2024 Q3 | 3 | 4 |
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