Filed: 11/14/2025ACC: 0001839435-25-000010
📋 What this filing means
OCTAGON CAPITAL ADVISORS LP filed this quarterly 13F‑HR report disclosing 26 equity positions with a total reported market value of $659.76M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
26
Positions
$659.76M
Total AUM (reported)
55.13M
Total Shares
Allocation by class
COM$389.57M59.0%
SPONSORED ADS$146.02M22.1%
COM NEW$84.38M12.8%
COM SHS$29.65M4.5%
COM CL A$9.74M1.5%
*W EXP 02/10/202$385.2K0.1%
Portfolio Concentration
Top 3$252.43M38.3%
4–10$221.45M33.6%
11–25$185.50M28.1%
Rest$385.2K0.1%
Top 3 weight
38.3%
Top 10 weight
71.8%
Voting Authority Distribution
Total shares with voting rights: 55.13M
Sole
Full voting authority
55.13M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole26
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings26
Rows:
ABIVAX SA
SOLEShares1.32M
TypeSH
Market value$112.49M
17.05%
Sole
1.32M
Shared
0.00
None
0.00
DIANTHUS THERAPEUTICS INC
SOLEShares2.42M
TypeSH
Market value$95.10M
14.41%
Sole
2.42M
Shared
0.00
None
0.00
GOSSAMER BIO INC
SOLEShares17.05M
TypeSH
Market value$44.84M
6.80%
Sole
17.05M
Shared
0.00
None
0.00
COGENT BIOSCIENCES INC
SOLEShares2.87M
TypeSH
Market value$41.27M
6.26%
Sole
2.87M
Shared
0.00
None
0.00
ARRIVENT BIOPHARMA INC
SOLEShares1.97M
TypeSH
Market value$36.37M
5.51%
Sole
1.97M
Shared
0.00
None
0.00
OCULAR THERAPEUTIX INC
SOLEShares2.62M
TypeSH
Market value$30.67M
4.65%
Sole
2.62M
Shared
0.00
None
0.00
TAYSHA GENE THERAPIES INC
SOLEShares9.07M
TypeSH
Market value$29.65M
4.49%
Sole
9.07M
Shared
0.00
None
0.00
MERUS N V
SOLEShares308K
TypeSH
Market value$29.00M
4.40%
Sole
308K
Shared
0.00
None
0.00
CIDARA THERAPEUTICS INC
SOLEShares300K
TypeSH
Market value$28.73M
4.35%
Sole
300K
Shared
0.00
None
0.00
TREVI THERAPEUTICS INC
SOLEShares2.81M
TypeSH
Market value$25.76M
3.90%
Sole
2.81M
Shared
0.00
None
0.00
MIND MEDICINE MINDMED INC
SOLEShares2.13M
TypeSH
Market value$25.11M
3.81%
Sole
2.13M
Shared
0.00
None
0.00
APELLIS PHARMACEUTICALS INC
SOLEShares903.50K
TypeSH
Market value$20.45M
3.10%
Sole
903.50K
Shared
0.00
None
0.00
KYMERA THERAPEUTICS INC
SOLEShares360K
TypeSH
Market value$20.38M
3.09%
Sole
360K
Shared
0.00
None
0.00
CENTESSA PHARMACEUTICALS PLC
SOLEShares830K
TypeSH
Market value$20.13M
3.05%
Sole
830K
Shared
0.00
None
0.00
PHARVARIS N V
SOLEShares722.60K
TypeSH
Market value$18.03M
2.73%
Sole
722.60K
Shared
0.00
None
0.00
KALVISTA PHARMACEUTICALS INC
SOLEShares1.27M
TypeSH
Market value$15.51M
2.35%
Sole
1.27M
Shared
0.00
None
0.00
CORBUS PHARMACEUTICALS HLDGS
SOLEShares1.11M
TypeSH
Market value$14.10M
2.14%
Sole
1.11M
Shared
0.00
None
0.00
BRIDGEBIO ONCOLOGY THERAPEUT
SOLEShares1.04M
TypeSH
Market value$12.08M
1.83%
Sole
1.04M
Shared
0.00
None
0.00
DBV TECHNOLOGIES S A
SOLEShares1.02M
TypeSH
Market value$10.18M
1.54%
Sole
1.02M
Shared
0.00
None
0.00
NUVATION BIO INC
SOLEShares2.63M
TypeSH
Market value$9.74M
1.48%
Sole
2.63M
Shared
0.00
None
0.00
MAZE THERAPEUTICS INC
SOLEShares177.67K
TypeSH
Market value$4.61M
0.70%
Sole
177.67K
Shared
0.00
None
0.00
NEUROGENE INC
SOLEShares252K
TypeSH
Market value$4.37M
0.66%
Sole
252K
Shared
0.00
None
0.00
UNICYCIVE THERAPEUTICS INC
SOLEShares1M
TypeSH
Market value$4.36M
0.66%
Sole
1M
Shared
0.00
None
0.00
PEPGEN INC
SOLEShares700K
TypeSH
Market value$3.23M
0.49%
Sole
700K
Shared
0.00
None
0.00
STRUCTURE THERAPEUTICS INC
SOLEShares115K
TypeSH
Market value$3.22M
0.49%
Sole
115K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
ABIVAX SASOLE | SPONSORED ADS | 1.32M | SH | $112.49M 17.05% | 1.32M | 0.00 | 0.00 |
DIANTHUS THERAPEUTICS INCSOLE | COM | 2.42M | SH | $95.10M 14.41% | 2.42M | 0.00 | 0.00 |
GOSSAMER BIO INCSOLE | COM | 17.05M | SH | $44.84M 6.80% | 17.05M | 0.00 | 0.00 |
COGENT BIOSCIENCES INCSOLE | COM | 2.87M | SH | $41.27M 6.26% | 2.87M | 0.00 | 0.00 |
ARRIVENT BIOPHARMA INCSOLE | COM | 1.97M | SH | $36.37M 5.51% | 1.97M | 0.00 | 0.00 |
OCULAR THERAPEUTIX INCSOLE | COM | 2.62M | SH | $30.67M 4.65% | 2.62M | 0.00 | 0.00 |
TAYSHA GENE THERAPIES INCSOLE | COM SHS | 9.07M | SH | $29.65M 4.49% | 9.07M | 0.00 | 0.00 |
MERUS N VSOLE | COM | 308K | SH | $29.00M 4.40% | 308K | 0.00 | 0.00 |
CIDARA THERAPEUTICS INCSOLE | COM NEW | 300K | SH | $28.73M 4.35% | 300K | 0.00 | 0.00 |
TREVI THERAPEUTICS INCSOLE | COM | 2.81M | SH | $25.76M 3.90% | 2.81M | 0.00 | 0.00 |
MIND MEDICINE MINDMED INCSOLE | COM NEW | 2.13M | SH | $25.11M 3.81% | 2.13M | 0.00 | 0.00 |
APELLIS PHARMACEUTICALS INCSOLE | COM | 903.50K | SH | $20.45M 3.10% | 903.50K | 0.00 | 0.00 |
KYMERA THERAPEUTICS INCSOLE | COM | 360K | SH | $20.38M 3.09% | 360K | 0.00 | 0.00 |
CENTESSA PHARMACEUTICALS PLCSOLE | SPONSORED ADS | 830K | SH | $20.13M 3.05% | 830K | 0.00 | 0.00 |
PHARVARIS N VSOLE | COM | 722.60K | SH | $18.03M 2.73% | 722.60K | 0.00 | 0.00 |
KALVISTA PHARMACEUTICALS INCSOLE | COM | 1.27M | SH | $15.51M 2.35% | 1.27M | 0.00 | 0.00 |
CORBUS PHARMACEUTICALS HLDGSSOLE | COM NEW | 1.11M | SH | $14.10M 2.14% | 1.11M | 0.00 | 0.00 |
BRIDGEBIO ONCOLOGY THERAPEUTSOLE | COM NEW | 1.04M | SH | $12.08M 1.83% | 1.04M | 0.00 | 0.00 |
DBV TECHNOLOGIES S ASOLE | SPONSORED ADS | 1.02M | SH | $10.18M 1.54% | 1.02M | 0.00 | 0.00 |
NUVATION BIO INCSOLE | COM CL A | 2.63M | SH | $9.74M 1.48% | 2.63M | 0.00 | 0.00 |
MAZE THERAPEUTICS INCSOLE | COM | 177.67K | SH | $4.61M 0.70% | 177.67K | 0.00 | 0.00 |
NEUROGENE INCSOLE | COM | 252K | SH | $4.37M 0.66% | 252K | 0.00 | 0.00 |
UNICYCIVE THERAPEUTICS INCSOLE | COM NEW | 1M | SH | $4.36M 0.66% | 1M | 0.00 | 0.00 |
PEPGEN INCSOLE | COM | 700K | SH | $3.23M 0.49% | 700K | 0.00 | 0.00 |
STRUCTURE THERAPEUTICS INCSOLE | SPONSORED ADS | 115K | SH | $3.22M 0.49% | 115K | 0.00 | 0.00 |
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