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Octagon Capital Advisors LP
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $1,112,538,962
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- DIANTHUS THERAPEUTICS INC · COM · 252828108 · shares: $179,525,699
- DEFINIUM THERAPEUTICS INC · COM SHS · 24477V105 · shares: $138,768,000
- ABIVAX SA · SPONSORED ADS · 00370M103 · shares: $132,327,180
- COGENT BIOSCIENCES INC · COM · 19240Q201 · shares: $90,945,000
- ALUMIS INC · COM · 022307102 · shares: $79,655,898
- ARRIVENT BIOPHARMA INC · COM · 04272N102 · shares: $68,474,416
- TAYSHA GENE THERAPIES INC · COM SHS · 877619106 · shares: $66,010,992
- BIOAGE LABS INC · COM · 09077V100 · shares: $42,843,480
- MIRUM PHARMACEUTICALS INC · COM · 604749101 · shares: $39,675,023
- KYMERA THERAPEUTICS INC · COM · 501575104 · shares: $35,547,700
Reported holdings
27 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| DIANTHUS THERAPEUTICS INC | COM | 252828108 | — | 1,841,667 shares | $179,525,699 |
| DEFINIUM THERAPEUTICS INC | COM SHS | 24477V105 | — | 2,950,000 shares | $138,768,000 |
| ABIVAX SA | SPONSORED ADS | 00370M103 | — | 993,000 shares | $132,327,180 |
| COGENT BIOSCIENCES INC | COM | 19240Q201 | — | 2,350,000 shares | $90,945,000 |
| ALUMIS INC | COM | 022307102 | — | 2,830,700 shares | $79,655,898 |
| ARRIVENT BIOPHARMA INC | COM | 04272N102 | — | 1,971,054 shares | $68,474,416 |
| TAYSHA GENE THERAPIES INC | COM SHS | 877619106 | — | 9,693,244 shares | $66,010,992 |
| BIOAGE LABS INC | COM | 09077V100 | — | 1,748,000 shares | $42,843,480 |
| MIRUM PHARMACEUTICALS INC | COM | 604749101 | — | 338,900 shares | $39,675,023 |
| KYMERA THERAPEUTICS INC | COM | 501575104 | — | 310,000 shares | $35,547,700 |
| AKTIS ONCOLOGY INC | COM | 01021M104 | — | 960,847 shares | $30,968,099 |
| XENON PHARMACEUTICALS INC | COM | 98420N105 | — | 490,000 shares | $29,576,400 |
| ERASCA INC | CALL | 29479A908 | CALL | 1,255,000 shares | $22,991,600 |
| PALISADE BIO INC | COM | 696389402 | — | 10,276,317 shares | $21,477,503 |
| OCULAR THERAPEUTIX INC | COM | 67576A100 | — | 2,075,000 shares | $20,376,500 |
| DISC MEDICINE INC | COM | 254604101 | — | 270,000 shares | $19,747,800 |
| SUMMIT THERAPEUTICS INC | COM | 86627T108 | — | 1,250,000 shares | $18,212,500 |
| PHARVARIS N V | COM | N69605108 | — | 456,721 shares | $15,793,412 |
| ADLAI NORTYE LTD | SPONSORED ADS | 00704R109 | — | 934,716 shares | $10,749,234 |
| PRECISION BIOSCIENCES INC | COM NEW | 74019P207 | — | 1,350,000 shares | $10,611,000 |
| DBV TECHNOLOGIES S A | SPONSORED ADS | 23306J309 | — | 574,200 shares | $9,416,880 |
| FAETH THERAPEUTICS INC | COM NEW | 81728A207 | — | 361,010 shares | $9,025,250 |
| GYRE THERAPEUTICS INC | COM | 403783103 | — | 954,416 shares | $6,289,601 |
| TREVI THERAPEUTICS INC | COM | 89532M101 | — | 315,000 shares | $5,874,750 |
| UNICYCIVE THERAPEUTICS INC | COM NEW | 90466Y202 | — | 1,000,000 shares | $4,690,000 |
| CONTEXT THERAPEUTICS INC | COM | 21077P108 | — | 3,050,000 shares | $1,689,395 |
| GOSSAMER BIO INC | COM | 38341P102 | — | 7,750,000 shares | $1,275,650 |