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SIRIOS CAPITAL MANAGEMENT L P

Position in ANNX — Annexon, Inc.

CIK 1104883 BOSTON, MA

Position in ANNX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,250,565
+$64,716 QoQ
Shares Held
569,276
-1.0% QoQ
Ownership
0.278%
of shares outstanding
% of Portfolio
0.40%
of 13F equity value
Holder Rank
#52
of 216 holders
Holding Since
Mar 2025
6 quarters on record
Voting authority Sole 0% Shared 100% None 0%

Common Shares in ANNX Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

SIRIOS CAPITAL MANAGEMENT L P holds $3,250,565 across 1 Biotechnology name. ANNX ranks #1 (100.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ANNX
Annexon, Inc.
This page
569,276 $3,250,565

All Filings in ANNX

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6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $3,250,565 569,276
2026-03-31 $3,185,849 575,063
2025-12-31 $3,565,485 710,256
2025-09-30 $2,959,110 970,200
2025-06-30 $2,374,984 989,577
2025-03-31 $1,483,563 768,686