Octagon Capital Advisors LP
CIK 1839435 · Holdings on Jun 30, 2026 · First reported Aug 14, 2026
Top ten holdings
Q2 2026- DNTH16.48%
- DFTX12.74%
- ABVX12.15%
- COGT8.35%
- ALMS7.31%
- AVBP6.28%
- TSHA6.06%
- BIOA3.93%
- MIRM3.64%
- KYMR3.26%
Share classes counted separately80.20%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- DFTXWeight increased · +7.64 pp5.10% → 12.74%Shares +510.00K (+20.90%)
- ABVXWeight increased · +3.81 pp8.34% → 12.15%Shares +316.00K (+46.68%)
- TSHAWeight increased · +1.68 pp4.38% → 6.06%Shares +833.33K (+9.41%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 26
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | DNTHDIANTHUS THERAPEUTICS INC View history and evidence | $179.53M | 16.48% | 1.84M shares | 18.08% → 16.48%-1.60 pp -105.00K (-5.39%) | Reduced | ▾ |
| 02 | DFTXDEFINIUM THERAPEUTICS INCCOM SHS View history and evidence | $138.77M | 12.74% | 2.95M shares | 5.10% → 12.74%+7.64 pp +510.00K (+20.90%) | Added | ▾ |
| 03 | ABVXABIVAX SA-ADRSPONSORED ADS View history and evidence | $132.33M | 12.15% | 993.00K shares | 8.34% → 12.15%+3.81 pp +316.00K (+46.68%) | Added | ▾ |
| 04 | COGTCOGENT BIOSCIENCES INC View history and evidence | $90.94M | 8.35% | 2.35M shares | 10.01% → 8.35%-1.66 pp 0 (0.00%) | Unchanged | ▾ |
| 05 | ALMSALUMIS INC View history and evidence | $79.66M | 7.31% | 2.83M shares | 6.90% → 7.31%+0.41 pp 0 (0.00%) | Unchanged | ▾ |
| 06 | AVBPARRIVENT BIOPHARMA INC View history and evidence | $68.47M | 6.28% | 1.97M shares | 5.03% → 6.28%+1.25 pp 0 (0.00%) | Unchanged | ▾ |
| 07 | TSHATAYSHA GENE THERAPIES INCCOM SHS View history and evidence | $66.01M | 6.06% | 9.69M shares | 4.38% → 6.06%+1.68 pp +833.33K (+9.41%) | Added | ▾ |
| 08 | BIOABIOAGE LABS INC View history and evidence | $42.84M | 3.93% | 1.75M shares | 3.38% → 3.93%+0.55 pp 0 (0.00%) | Unchanged | ▾ |
| 09 | MIRMMIRUM PHARMACEUTICALS INC View history and evidence | $39.68M | 3.64% | 338.90K shares | 3.46% → 3.64%+0.18 pp 0 (0.00%) | Unchanged | ▾ |
| 10 | KYMRKYMERA THERAPEUTICS INC View history and evidence | $35.55M | 3.26% | 310.00K shares | 3.92% → 3.26%-0.66 pp -115.00K (-27.06%) | Reduced | ▾ |
Options overlay 1
$22.99M notionalPut and Call positions are separate. Notional is based on underlying securities, not option premium, market value or net exposure. Quantities are underlying shares.
| Security | Put / Call | Underlying shares | Notional | Quantity change | |
|---|---|---|---|---|---|
ERASERASCA INCCALL View history and evidence | Call | 1.25M | $22.99M | +1.25M | ▾ |
1 / 1 options · preview only
Exited positions 7
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| CNTA CENTESSA PHARMACEUTICALS-ADR | Non-derivative | -750,000 | -$29.79M | SEC filing ↗ | SEC filing ↗ |
| KALV KALVISTA PHARMACEUTICALS INC | Non-derivative | -1,450,000 | -$29.19M | SEC filing ↗ | SEC filing ↗ |
| TERN TERNS PHARMACEUTICALS INC | Non-derivative | -530,000 | -$27.94M | SEC filing ↗ | SEC filing ↗ |
3 / 7 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1839435 · Period 2026-06-30
Data loaded 2026-09-23 · First reported 2026-08-14
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 1112538962
}Take these holdings further.
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