ADAR1 Capital Management portfolio
Type not verifiedPortfolio as of Jun 30, 2026 (Q2 2026) · filed with the SEC on Aug 14, 2026 · data updated on Nov 5, 2026 · Q2 2026 13F (filing) ↗ · all its 13F filings ↗
A 13F shows the portfolio at quarter-end and is filed up to 45 days later: these are not real-time positions and they may have changed.
ADAR1 Capital Management reported a $2.1 bn portfolio of 262 positions to the SEC as of the end of Q2 2026. Its largest positions are ABVX, PTGX, ROIV. During the quarter it opened Editas Medicine and exited Beam Therapeutics and Scholar Rock Holding.
Sections with a free account
What it reported after the quarter end (Q2 2026)
The 13F shows the portfolio as of Jun 30, 2026. Since then ADAR1 Capital Management has filed these own trades with the SEC (Form 4, when it owns more than 10% of a company or holds a role in it) and stakes above 5% (13D and 13G). It is not everything it did: only what it must report before the next 13F.
Form 4 · 3,619,049 shares · trades from Aug 20 to Oct 21 · filed Oct 21, 2026 · filing (latest of 4) ↗
Form 4 · 337,612 shares · trades from Jul 27 to Oct 27 · filed Oct 27, 2026 · filing (latest of 3) ↗
Form 4 · 156,584 shares · trades from Jul 15 to Oct 23 · filed Oct 27, 2026 · filing (latest of 7) ↗
Stake reported in the company · event of Sep 30, 2026 · filed Oct 7, 2026 · filing ↗
Stake reported in the company · event of Aug 31, 2026 · filed Sep 8, 2026 · filing ↗
Stake reported in the company · event of Jul 31, 2026 · filed Aug 14, 2026 · filing ↗
- 13G/AFreenome8.3 %
Stake reported in the company · event of Jun 30, 2026 · filed Aug 14, 2026 · filing ↗
Stake reported in the company · event of Jun 30, 2026 · filed Aug 14, 2026 · filing ↗
Plus 14 more, in its EDGAR filings.
What changed this quarter
241 positions with a change (31 new, 93 added to, 62 trimmed, 55 sold); also, 6 entered through an IPO, 13 exited through an acquisition or merger, 3 entered through a spin-off. 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Abivax+29%more sharesIncreased9.4% → 11.4%
- Agios Pharmaceuticals+816%more sharesIncreased0.3% → 2.3%
- State Str Spdr S&P 500 ETF T+70%more sharesIncreased3.0% → 4.6%
- ZAI Lab+136%more sharesIncreased1.6% → 3.0%
- Beam Therapeutics−1.6 ppof portfolioSold out2.1% → —
- Editas Medicine+1.4 ppof portfolioNew— → 1.4%
- Praxis Precision Medicines+4,850%more sharesIncreasedunder 0.1% → 1.2%
- Denali Therapeutics−45%fewer sharesReduced2.2% → 1.3%
- Insmed+546%more sharesIncreased0.4% → 1.2%
- Scholar Rock Holding−0.9 ppof portfolioSold out1.2% → —
- Enanta Pharmaceuticals+2,518%more sharesIncreasedunder 0.1% → 0.9%
- Cytokinetics−28%fewer sharesReduced2.5% → 1.8%
The figure on the right: for positions added to or trimmed, the change in the number of shares (%); for new and sold ones, the points of the portfolio moved (pp). Below, the portfolio weight before → after. Traded weight: what it bought or sold, excluding price effects.
Top holdings
- AbivaxABVX11.4%
- Protagonist TherapeuticsPTGX5.6%
- Roivant SciencesROIV5.3%
- State Str Spdr S&P 500 ETF TSPY4.6%
- ImmunovantIMVT4.3%
- ZAI LabZLAB3.0%
- Agios PharmaceuticalsAGIO2.3%
- Crinetics PharmaceuticalsCRNX2.2%
- EA Series TrustBOXX1.9%
- CytokineticsCYTK1.8%
- SepternaSEPN1.5%
- Anteris Technologies GlobalAVR1.5%
- Editas MedicineEDIT1.4%
- Denali TherapeuticsDNLI1.3%
- Spyre TherapeuticsSYRE1.2%
Portfolio by sector
- ● Health Care 91%
- ● No sector 7%
- ● SPAC / vehículos 2%
13F filings with amendments or confidential positions
- 13F Q4 2025 ↗filed Feb 17, 2026Amendment of Feb 18, 2026 (replaces the original) ↗
Declared options (10)
Besides stocks, ADAR1 Capital Management declared 4 puts (they gain if the stock falls) and 6 calls (they gain if it rises) with a notional of $57.7M. The 13F reports the value of the underlying shares, not the premium paid, so these figures look large and are not added to the portfolio. Nor does it say whether the option is bought or written, or its strike or expiry: it may be a hedge.
- PUTiShares Russell 2000 ETFIWM$18.8M
- PUTState Str Spdr S&P 500 ETF TSPYnew this quarter$18.7M
- PUTState Street SPDR S&P Biotech ETFXBI$10.7M
- CALLAbivaxABVX$5.9M
- CALLKeen Vision AcquisitionKVACF$930K
- PUTAmylyx PharmaceuticalsAMLXnew this quarter$720K
- CALLUltragenyx PharmaceuticalRARE$668K
- CALLNovo Nordisk A/sNVO$623K
- CALLCorbus Pharmaceuticals HoldingsCRBP$563K
- CALLSolidion TechnologySTI$125K
Stakes above 5% (13D/13G)
Companies where this filer reported holding 5% or more of the shares. It is the figure from its latest filing on each one; history since December 2024.
How we classify it
Type not verified: we have not assigned a type because we found no document that is enough to tell. Most 13F filers are in this situation: we only review in depth those that meet the portfolio criteria.
Not counted as a concentrated manager: its portfolio is not within 5 to 100 positions; its top 10 positions are under 45%. Its portfolio is shown all the same, but it is left out of manager counts, the consensus and the ranking. How this is decided
Managers of a similar size
A 13F portfolio value between a third and three times this one, whatever the type of filer. It is not a comparison of what they hold.
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