AMLX
Amylyx Pharmaceuticals, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +25.0% ·
share flow -30.0% ·
net new positions +20.0%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 79 | +11 | 60.68M | $1.09B | +14 | −2 |
| Q1 2026 | 70 | -3 | 62.54M | $868.96M | +6 | −9 |
| Q4 2025 | 73 | 0 | 62.47M | $754.72M | — | — |
| Q3 2025 | 18 | +1 | 42.12M | $572.37M | +1 | — |
| Q2 2025 | 14 | -1 | 33.34M | $213.68M | — | −1 |
| Q1 2025 | 12 | +1 | 15.66M | $55.46M | +2 | −1 |
| Q4 2024 | 11 | 0 | 5.41M | $20.47M | +1 | −1 |
| Q3 2024 | 10 | +2 | 5.23M | $16.93M | +2 | — |
| Q2 2024 | 8 | — | 10.16M | $19.31M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Citadel Advisors ✦ | 1.90M | +41.2% | $6.15M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Citadel Advisors ✦ | 1.90M | +41.2% | $6.15M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | D. E. Shaw & Co. ✦ | 691.07K | -47.2% | $2.24M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | D. E. Shaw & Co. ✦ | 691.07K | -47.2% | $2.24M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 5 | AQR Capital Management ✦ | 649.08K | -80.6% | $2.10M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 551.04K | +17.5% | $1.79M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | Geode Capital Management ✦ (passive) | 551.04K | +17.5% | $1.79M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | Millennium Management ✦ | 456.82K | -70.2% | $1.48M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | Two Sigma Investments ✦ | 367.24K | -71.7% | $1.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Marshall Wace ✦ | 283.99K | New | $920,114 | 0.0% | New | 1 | SEC ↗ |
| 11 | Marshall Wace ✦ | 283.99K | New | $920,114 | 0.0% | New | 1 | SEC ↗ |
| 12 | Renaissance Technologies ✦ | 271.80K | -66.5% | $880,632 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | T. Rowe Price ✦ | 55.60K | 0.0% | $181,000 | 0.0% | Held | 2 | SEC ↗ |
| 14 | Point72 Asset Management ✦ | 200 | New | $648 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $920,114 | 0.0% |
| Marshall Wace | $920,114 | 0.0% |
| Point72 Asset Management | $648 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 170 holders, 113.99M shares, $1.58B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.