DOSSIER · 13F-HR · Q1 2026

Octagon Capital Advisors LP

Octagon's holding co. based in Boston, MA $904M in tracked AUM across 29 positions as of Q1 2026.

O
Octagon·Boston, MA·Holding Co.
CIK 0001839435 · last filed Mar 31, 2026
Total AUM
$904M
1.8%
vs prior
Holdings
29
positions
Whale Score
68
68
tracked
Activity
no data
changes this Q
Top sector
Financials
9% weight
concentration
AI Analysis · Q1 2026 · Q1 2026

Octagon Capital Advisors LP filed its latest 13F-HR for Q1 2026. See the latest holdings and position changes below.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
DNTH
DIANTHUS THERAPEUTICS INC
$163M1.9M18.1%
02
COGT
COGENT BIOSCIENCES INC
$90M2.4M10.0%
03
ABVX
ABIVAX SA
$75M677K8.3%
04
ALMS
ALUMIS INC
$62M2.8M6.9%
05
DFTX
DEFINIUM THERAPEUTICS INC
$46M2.4M5.1%
06
AVBP
ARRIVENT BIOPHARMA INC
$45M2.0M5.0%
07
TSHA
TAYSHA GENE THERAPIES INC
$40M8.9M4.4%
08
KYMR
KYMERA THERAPEUTICS INC
$35M425K3.9%
09
MIRM
MIRUM PHARMACEUTICALS INC
$31M339K3.5%
10
BIOA
BIOAGE LABS INC
$31M1.7M3.4%

Filing history

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