Octagon Capital Advisors LP

CIK 0001839435 · NEW YORK, NY · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source

Octagon Capital Advisors LP reported 27 positions worth $1.11B as of June 30, 2026 (13F filed August 14, 2026). Largest holding: DNTH (16.1%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$1.11B
2026 Q2
Positions
27
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
78.5%
Est. Net Flow (Q)
2026 Q2
10 / 27 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1DNTHDIANTHUS THERAPEUTICS INCSH$179.5M16.14%1,841,667
2DFTXDEFINIUM THERAPEUTICS INCSH$138.8M12.47%2,950,000
3ABVXABIVAX SASH$132.3M11.89%993,000
4COGTCOGENT BIOSCIENCES INCSH$90.9M8.17%2,350,000
5ALMSALUMIS INCSH$79.7M7.16%2,830,700
6AVBPARRIVENT BIOPHARMA INCSH$68.5M6.15%1,971,054
7TSHATAYSHA GENE THERAPIES INCSH$66.0M5.93%9,693,244
8BIOABIOAGE LABS INCSH$42.8M3.85%1,748,000
9MIRMMIRUM PHARMACEUTICALS INCSH$39.7M3.57%338,900
10KYMRKYMERA THERAPEUTICS INCSH$35.5M3.20%310,000

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does Octagon Capital Advisors LP hold as of Q2 2026?

Octagon Capital Advisors LP reported 27 positions worth $1.11B in its Q2 2026 13F filing. Largest positions: DNTH (16.1%), DFTX (12.5%), ABVX (11.9%), COGT (8.2%) and ALMS (7.2%).

What did Octagon Capital Advisors LP buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did Octagon Capital Advisors LP sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.