13F Insight
DOSSIER · 13F-HR · Q1 2026

Octagon Capital Advisors LP

$904M in tracked AUM across 29 positions as of Q1 2026.

OC
CIK 0001839435 · last filed Mar 31, 2026
Total AUM
$904M
as of Q1 2026
Holdings
29
—
positions
Whale Score
66
66
tracked
Activity
—
no data
changes this Q
AI Analysis · 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

2026Q1Mar 31
$904M▲ 9.7%
29 positionsView →2025Q4Dec 31
$824M▲ 24.8%
27 positionsView →2025Q3Sep 30
$660M▲ 44.8%
27 positionsView →2025Q2Jun 30
$456M▲ 19.6%
30 positionsLocked2025Q1Mar 31
$381M▼ 37.3%
26 positionsLocked2024Q4Dec 31
$608M▼ 5.5%
33 positionsLocked2024Q3Sep 30
$643M▲ 1.0%
42 positionsLocked2024Q2Jun 30
$636M▼ 23.7%
47 positionsLocked2024Q1Mar 31
$834M▲ 33.5%
57 positionsLocked2023Q4Dec 31
$625M▼ 4.0%
33 positionsLocked2023Q3Sep 30
$651M▼ 9.4%
40 positionsLocked2023Q2Jun 30
$719M▲ 3.4%
41 positionsLocked
Showing 12 of 22