Institutional Ownership
Amylyx Pharmaceuticals Inc
CUSIP 03237H101COMAMLXQ1 2026
Institutional Holders
165
13F filers
Shares Held
108.37M
Aggregate institutional
Institutional Value
$1.50B
Q1 2026
Net New Holders
-13
21 new · 34 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions21
Increased63
Decreased53
Sold out34
Institutional Holders
165 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Fmr LLC | 16.63M | $231.16M | +112.1K | Added |
| 2 | Blackrock, Inc. | 8.83M | $122.72M | −225.6K | Reduced |
| 3 | Perceptive Advisors LLC | 8.28M | $115.16M | 0 | Held |
| 4 | Tcg Crossover Management, LLC | 6.24M | $86.79M | 0 | Held |
| 5 | Commodore Capital LP | 5.65M | $78.53M | 0 | Held |
| 6 | Janus Henderson Group PLC | 4.99M | $69.26M | +520.2K | Added |
| 7 | Saturn V Capital Management LP | 4.35M | $60.46M | −146.6K | Reduced |
| 8 | Adage Capital Partners Gp, L.L.C. | 3.56M | $49.49M | +783.7K | Added |
| 9 | First Light Asset Management, LLC | 3.19M | $44.35M | −164.9K | Reduced |
| 10 | Driehaus Capital Management LLC | 2.99M | $41.52M | −122.4K | Reduced |
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