Amylyx Pharmaceuticals (AMLX) insider trades, Congressional trades and 13F ownership

OQRO

Amylyx Pharmaceuticals (AMLX) insider trades, Congressional trades and 13F ownership | OQRO

Who owns it (13F)

As of Jun 30, 2026

Institutions reporting a stake, Q2 2026

207

+37 vs Q1 2026

Share of stock reported

115M

shares, no single share count to compare with

Change vs Q1 2026

+213K shares

48 new positions, 13 positions closed

Reported in 13F filings, which cover managers over $100M and include double counting. A 13F shows holdings on the last day of the quarter, not when shares were bought or sold. Change counts the 202 managers that reported both quarters.

Largest reported holders, Q2 2026

1Fmr Llc About the same16.7M sh · $300M14.5% of reported
2BlackRock, Inc. About the same8.83M sh · $159M7.6% of reported
3Perceptive Advisors Llc About the same8.33M sh · $150M7.2% of reported
4TCG Crossover Management, LLC About the same6.24M sh · $112M5.4% of reported
5Commodore Capital LP About the same5.65M sh · $101M4.9% of reported
6Jupiter Topco LLC No comparable report last quarter5.24M sh · $94M4.5% of reported
7Saturn V Capital Management LP Added (+274K shares)4.62M sh · $83M4.0% of reported
8Vanguard Capital Management Llc Added (+83K shares)4.22M sh · $75.9M3.7% of reported
9Morgan Stanley Added (+955K shares)3.13M sh · $56.2M2.7% of reported
10Driehaus Capital Management LLC Added (+50K shares)3.04M sh · $54.5M2.6% of reported
11First Light Asset Management, LLC Trimmed (-167K shares)3.02M sh · $54.3M2.6% of reported
12Franklin Resources Inc Added (+689K shares)2.95M sh · $53M2.5% of reported
13Goldman Sachs Group Inc Added (+232K shares)2.86M sh · $51.3M2.5% of reported
14State Street Corp Added (+240K shares)2.6M sh · $46.8M2.3% of reported
15Geode Capital Management, Llc Added (+124K shares)2.34M sh · $41.9M2.0% of reported
16Jpmorgan Chase & Co Added (+1.7M shares)1.86M sh · $34.9M1.7% of reported
17Adage Capital Partners Gp, L.L.C. Trimmed (-1.66M shares)1.9M sh · $34.1M1.6% of reported
18Siren, L.L.C. Added (+251K shares)1.48M sh · $26.6M1.3% of reported
19Eventide Asset Management, Llc Trimmed (-186K shares)1.33M sh · $23.8M1.1% of reported
20683 Capital Management, LLC Trimmed (-250K shares)1.28M sh · $23M1.1% of reported

Source: SEC Form 13F data sets, every filer, common stock only (options and bonds left out); 7 managers also reported puts and 7 managers calls. Amendments are applied; lines whose value was filed in thousands are scaled, and lines whose shares and value disagree are left out.

Fund moves · 0

Who owns it (13F)

Largest reported holders, Q2 2026