AMLX

Amylyx Pharmaceuticals Inc$17.02 4.27%
Health CareUSCUSIP 03237H101· EOD Jul 16, 2026◍ Confluence graph
Tracked 13F Holders
142
-2 QoQ
13F Value (tracked)
$1.5B
Insider Net · 180d
-$2.2M
1↑ 5↓
Recent Filings
15
Smart-money sentimentMixed
BearishBullish
13F funds (latest Q)28 adding · 19 trimming
Insider net (180d)-$2.2M

Price & smart-money activity

$17.02 4.27%5Y -5.8%
$1.52$12.16$22.80$33.43$44.0720222023202420252026322159416291225211030352133428402334374534372303434242724259534212236274837524017414022
Hover for who · click for detailEnd-of-day closing prices52w $7.64 – $18.70

Top institutional holders

142 tracked 13F filers
#FundPosition valueSharesLast moveAs ofHistory
1FMR LLC
$231.2M
16.6M
+0.7%
Added · +112K sh
Q1 2026
2BlackRock, Inc.
$122.7M
8.8M
−2.5%
Reduced · −226K sh
Q1 2026
3PERCEPTIVE ADVISORS LLC
$115.2M
8.3M
Held
Q1 2026
4TCG Crossover Management, LLC
$86.8M
6.2M
Held
Q1 2026
5Commodore Capital LP
$78.5M
5.7M
Held
Q1 2026
6JANUS HENDERSON GROUP PLC
$69.3M
5.0M
+12%
Added · +520K sh
Q1 2026
7Saturn V Capital Management LP
$60.5M
4.3M
−3.3%
Reduced · −147K sh
Q1 2026
8VANGUARD CAPITAL MANAGEMENT LLC
$57.6M
4.1M
New
+4.1M sh
Q1 2026
9ADAGE CAPITAL PARTNERS GP, L.L.C.
$49.5M
3.6M
+28%
Added · +784K sh
Q1 2026
10First Light Asset Management, LLC
$44.3M
3.2M
−4.9%
Reduced · −165K sh
Q1 2026
11GOLDMAN SACHS GROUP INC
$36.5M
2.6M
+0.5%
Added · +13K sh
Q1 2026
12STATE STREET CORP
$32.8M
2.4M
+14%
Added · +293K sh
Q1 2026
13FRANKLIN RESOURCES INC
$31.4M
2.3M
+88%
Added · +1.1M sh
Q1 2026
14GEODE CAPITAL MANAGEMENT, LLC
$30.7M
2.2M
+2.1%
Added · +45K sh
Q1 2026
15MORGAN STANLEY
$30.2M
2.2M
−7.8%
Reduced · −184K sh
Q1 2026
16Almitas Capital LLC
$29.5M
2.1M
Held
Q1 2026
17GREAT POINT PARTNERS LLC
$24.3M
1.8M
Held
Q1 2026
18683 Capital Management, LLC
$21.3M
1.5M
−7.3%
Reduced · −120K sh
Q1 2026
19EVENTIDE ASSET MANAGEMENT, LLC
$21.0M
1.5M
+0.1%
Added · +810 sh
Q1 2026
20BANK OF AMERICA CORP /DE/
$18.5M
1.3M
−0.4%
Reduced · −5K sh
Q1 2026
21DEUTSCHE BANK AG\
$17.6M
1.3M
−4.9%
Reduced · −65K sh
Q1 2026
22Siren, L.L.C.
$17.1M
1.2M
New
+1.2M sh
Q1 2026
23BALYASNY ASSET MANAGEMENT L.P.
$15.4M
1.1M
+29%
Added · +249K sh
Q1 2026
24ADAR1 Capital Management, LLC
$13.9M
1.0M
+12%
Added · +110K sh
Q1 2026
25BARCLAYS PLC
$13.5M
972K
+229%
Added · +677K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Fund activity: latest quarter

Opened (NEW)
3
funds
Added
25
funds
Reduced
19
funds
Exited
0
funds

Funds that own AMLX also own

CompanyCo-held byCombined value
ELI LILLY & COLLY51 funds$5.3B
INTUITIVE SURGICAL INCISRG50 funds$1.9B
STRYKER CORPSYK50 funds$1.1B
AMAZON.COM INCAMZN49 funds$15.3B
BROADCOM INCAVGO49 funds$12.0B
UNITEDHEALTH GROUP INCUNH49 funds$2.6B
BOSTON SCIENTIFIC CORPBSX49 funds$1.5B
NVIDIA CORPNVDA48 funds$29.0B
MICROSOFT CORPMSFT48 funds$19.3B
ALPHABET INC-CL AGOOGL48 funds$13.2B
MICRON TECHNOLOGY INCMU48 funds$6.2B
SERVICENOW INCNOW48 funds$1.4B

Ranked by how many of AMLX's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$51K
1 insiders
Sells · 180d
$2.3M
5 insiders
Net
-$2.2M
13 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Jul 10, 2026Mazzariello GinaChief Legal OfficerSell (S)15K$264K
Jul 9, 2026Mazzariello GinaChief Legal OfficerSell (S)15K$275K
Jun 4, 2026Zeiher Bernhardt GDirectorGrant (A)24K$0
Jun 4, 2026Firestone KarenDirectorGrant (A)24K$0
Jun 4, 2026Quimi DaphneDirectorGrant (A)24K$0
Jun 4, 2026MILNE GEORGE M JRDirectorGrant (A)24K$0
Jun 4, 2026FONTEYNE PAUL R.DirectorGrant (A)24K$0
May 21, 2026Firestone KarenDirectorBuy (P)4K$51K
Mar 5, 2026Bedrosian Camille LChief Medical OfficerGrant (A)96K$0
Mar 5, 2026Bedrosian Camille LChief Medical OfficerGrant (A)144K$0
Mar 5, 2026Klee Justin B.Co-Chief Executive Officer, DirectorGrant (A)249K$0
Mar 5, 2026Klee Justin B.Co-Chief Executive Officer, DirectorGrant (A)373K$0

Institutional ownership over time

141 funds+56 since Q3 2024
072143Q3 2024Q1 2025Q3 2025Q1 2026
funds holding aggregate valuelatest $1.5B

Recent filings

15 shown

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Ask your agent what changed in AMLX

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/AMLX/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for AMLX.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for AMLX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.