Funds · 13F filer · New York, NY

Octagon Capital Advisors LP

$1.1B in 26 U.S. stocks and ETFs at the end of June 30, 2026, as reported to the SEC.1

1y return+219.2%S&P 500 +20.9%
3y return+186.1%S&P 500 +68.5%
5y return+130.8%S&P 500 +74.5%

These returns are for its stock picks as disclosed on Form 13F: last quarter's holdings, valued at this quarter's prices. They miss trades within each quarter, short positions, options, bonds, cash and fees, so they aren't the returns its clients got.

$100 invested in its stock picks

Since December 31, 2020: $222 against $200 in the S&P 500.2

Octagon Capital Advisors LPS&P 500 (SPY)
$50$100$22220202026

Top holdings

At the end of June 30, 2026. Change is in shares since the quarter before.2

StockValueShare of portfolioChange
DNTHDianthus Therapeutics Inc$179.5M16.5%−5.4%
DFTXDefinium Therapeutics Inc$138.8M12.7%+20.9%
ABVXAbivax Sa$132.3M12.1%+46.7%
COGTCogent Biosciences Inc$90.9M8.3%
ALMSAlumis Inc$79.7M7.3%
AVBPArrivent Biopharma Inc$68.5M6.3%
TSHATaysha Gene Therapies Inc$66.0M6.1%+9.4%
BIOABioage Labs Inc$42.8M3.9%
MIRMMirum Pharmaceuticals Inc$39.7M3.6%
KYMRKymera Therapeutics Inc$35.5M3.3%−27.1%
AKTSAktis Oncology Inc$31.0M2.8%
XENEXenon Pharmaceuticals Inc$29.6M2.7%
PALIPalisade Bio Inc$21.5M2.0%
OCULOcular Therapeutix Inc$20.4M1.9%−34.5%
IRONDisc Medicine Inc$19.7M1.8%
SMMTSummit Therapeutics Inc$18.2M1.7%New
Pharvaris N VCUSIP N69605108$15.8M1.4%+176.8%
ANLAdlai Nortye Ltd$10.7M1.0%New
DTILPrecision Biosciences Inc$10.6M1.0%−39.6%
DBVTDbv Technologies S A$9.4M0.9%
FTHFaeth Therapeutics Inc$9.0M0.8%New
GYREGyre Therapeutics Inc$6.3M0.6%New
TRVITrevi Therapeutics Inc$5.9M0.5%−78.8%
UNCYUnicycive Therapeutics Inc$4.7M0.4%
CNTXContext Therapeutics Inc$1.7M0.2%−41.9%

Best picks still held

How each current holding has done since the quarter it first appeared in its filings (up to six years back).

StockHeld sinceReturn sinceNow worth
DNTHDianthus Therapeutics IncSeptember 30, 2023+613.1%$179.5M
COGTCogent Biosciences IncSeptember 30, 2024+258.3%$90.9M
TRVITrevi Therapeutics IncMarch 31, 2025+196.5%$5.9M
ALMSAlumis IncDecember 31, 2025+188.3%$79.7M
KYMRKymera Therapeutics IncJune 30, 2025+162.8%$35.5M
DFTXDefinium Therapeutics IncMarch 31, 2026+148.9%$138.8M
TSHATaysha Gene Therapies IncMarch 31, 2024+137.3%$66.0M
AVBPArrivent Biopharma IncMarch 31, 2024+94.5%$68.5M
DTILPrecision Biosciences IncDecember 31, 2025+88.9%$10.6M
Pharvaris N VCUSIP N69605108September 30, 2024+86.7%$15.8M

Sold off last quarter

  • Centessa Pharmaceuticals PLCCUSIP 152309100 was $29.8M
  • Kalvista Pharmaceuticals IncCUSIP 483497103 was $29.2M
  • Terns Pharmaceuticals IncCUSIP 880881107 was $27.9M
  • BBOTBridgebio Oncology Therapeut was $6.4M
  • LXEOLexeo Therapeutics Inc was $6.3M
  • CATXPerspective Therapeutics Inc was $3.3M
  • EVMNEvommune Inc was $3.3M

Quarter by quarter

QuarterIts picksS&P 500
June 30, 2026+28.5%+14.8%
March 31, 2026+18.7%−4.6%
December 31, 2025+36.9%+2.4%
September 30, 2025+52.9%+7.8%
June 30, 2025+9.6%+10.5%
March 31, 2025−17.7%−4.6%
December 31, 2024−0.0%+2.1%
September 30, 2024+5.6%+5.4%
June 30, 2024−13.8%+4.0%
March 31, 2024+7.0%+10.0%
December 31, 2023+30.4%+11.2%
September 30, 2023−21.7%−3.6%
June 30, 2023+21.1%+8.3%
March 31, 2023−0.0%+7.0%
December 31, 2022+5.1%+7.1%
September 30, 2022+22.3%−5.3%
June 30, 2022−21.7%−16.5%
March 31, 2022−21.0%−4.9%
December 31, 2021−10.3%+10.7%
September 30, 2021−6.6%+0.3%

Sources

Every number on this page points here. Each one links to the public record.

  1. 1
    CIK 1839435
  2. 2
    Filed August 14, 2026 · accession 0001839435-26-000004