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Octagon Capital Advisors LP

Everything this manager disclosed owning in US-listed stocks — its complete Form 13F portfolio · as of 2026-06-30 · filed with the SEC up to 45 days after quarter end · CIK 0001839435

$1.11B

disclosed book value

27

positions

16.1%

largest position share

Positions, as of 2026-06-30

top 27 of 27 · 13F covers long US-listed positions only — cash, bonds, private and foreign stakes are not disclosed · PUT/CALL tags = options positions (share-equivalents), not shares held

#IssuerSharesValue% of book
1DNTHDIANTHUS THERAPEUTICS INC1.8M$179.5M16.1%
2DFTXDEFINIUM THERAPEUTICS INC3.0M$138.8M12.5%
3ABVXABIVAX SA993,000$132.3M11.9%
4COGTCOGENT BIOSCIENCES INC2.4M$90.9M8.2%
5ALMSALUMIS INC2.8M$79.7M7.2%
6AVBPARRIVENT BIOPHARMA INC2.0M$68.5M6.2%
7TSHATAYSHA GENE THERAPIES INC9.7M$66.0M5.9%
8BIOABIOAGE LABS INC1.7M$42.8M3.9%
9MIRMMIRUM PHARMACEUTICALS INC338,900$39.7M3.6%
10KYMRKYMERA THERAPEUTICS INC310,000$35.5M3.2%
11AKTSAKTIS ONCOLOGY INC960,847$31.0M2.8%
12XENEXENON PHARMACEUTICALS INC490,000$29.6M2.7%
13ERASCA INCCALL1.3M$23.0M2.1%
14PALIPALISADE BIO INC10.3M$21.5M1.9%
15OCULOCULAR THERAPEUTIX INC2.1M$20.4M1.8%
16IRONDISC MEDICINE INC270,000$19.7M1.8%
17SMMTSUMMIT THERAPEUTICS INC1.3M$18.2M1.6%
18PHARVARIS N V456,721$15.8M1.4%
19ANLADLAI NORTYE LTD934,716$10.7M1%
20DTILPRECISION BIOSCIENCES INC1.4M$10.6M1%
21DBVTDBV TECHNOLOGIES S A574,200$9.4M0.8%
22FTHFAETH THERAPEUTICS INC361,010$9.0M0.8%
23GYREGYRE THERAPEUTICS INC954,416$6.3M0.6%
24TRVITREVI THERAPEUTICS INC315,000$5.9M0.5%
25UNCYUNICYCIVE THERAPEUTICS INC1.0M$4.7M0.4%
26CNTXCONTEXT THERAPEUTICS INC3.0M$1.7M0.2%
27GOSSGOSSAMER BIO INC7.8M$1.3M0.1%

Source: SEC Form 13F-HR, reporting period 2026-06-30. Values are the manager's filed June-30-style quarter-end marks, not live prices. Research, not investment advice.

EvidInvest is an independent research and information tool. Figures are calculated from public SEC filings and third-party market data and are provided for informational and educational purposes only. EvidInvest does not provide investment advice, brokerage, or financial services, and is not affiliated with any company it covers. Verify all figures against primary sources before making any decision.