DOSSIER · 13F Holders · Q3 2026

AMYLYX PHARMACEUTICALS INC

5 institutions still hold AMYLYX PHARMACEUTICALS INC as of Q3 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03237H951·5 13F holders·last filed Sep 30, 2026
Market cap
—
13F value held
$3M
visible holders
Holders
5
filers reporting
Concentration
49.06%
JPMORGAN CHASE & CO #1
top holder share
AI Holders Summary · Q3 2026

5 institutions reported AMYLYX PHARMACEUTICALS INC in Q3 2026. JPMORGAN CHASE & CO leads at 49.1% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
JPMORGAN CHASE & CO
CIK 0000019617
$2M52K0.00%Q3 2026
02
IMC-Chicago, LLC
CIK 0001452861· Market maker
$946K33K0.00%Q3 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$404K14K0.00%Q3 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$215K7K0.00%Q3 2026
05
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025