683 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.
683 Capital Management reported a $1.0 bn portfolio of 114 companies (125 positions, counting each share class separately) to the SEC as of the end of Q2 2026. Its largest positions are COF, CVNA, ANAB. During the quarter it opened Unity Software and Sea and exited Eli Lilly and Booking Holdings.
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 683 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.
What changed this quarter
169 positions with a change (10 new, 27 added to, 39 trimmed, 93 sold); also, 5 entered through an IPO, 3 exited through an acquisition or merger, 1 entered through a spin-off. 12 are listed here: those of 0.5 points of the portfolio or more (up to 12).
- Unity Software+1.7 ppof portfolioNew— → 1.7%
- Astrana Health−70%fewer sharesReduced1.7% → 0.9%
- GXO Logistics−57%fewer sharesReduced2.5% → 1.0%
- Eli Lilly−1.3 ppof portfolioSold out1.3% → —
- Sea+1.2 ppof portfolioNew— → 1.2%
- TG Therapeutics−34%fewer sharesReduced1.9% → 2.1%
- Harmony Biosciences Holdings+1.0 ppof portfolioNew— → 1.0%
- Nu Holdings+1.0 ppof portfolioNew— → 1.0%
- Booking Holdings−0.9 ppof portfolioSold out0.9% → —
- Cogent Communications Holdings−0.8 ppof portfolioSold out0.8% → —
- Protagonist Therapeutics−18%fewer sharesReduced3.7% → 3.4%
- Howard Hughes Holdings+294%more sharesIncreased0.2% → 1.0%
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
- Capital One FinancialCOF7.0%
- CarvanaCVNA4.7%
- AnaptysbioANAB4.3%
- Joint Stock Company Kaspi.kzKSPI3.9%
- Becton, DickinsonBDX3.6%
- Molina HealthcareMOH3.6%
- Hilton Grand VacationsHGV3.5%
- Protagonist TherapeuticsPTGX3.4%
- MeiraGTx HoldingsMGTX3.0%
- Wave Life Sciences2.8%
- uniQureQURE2.5%
- Amylyx PharmaceuticalsAMLX2.2%
- Amentum HoldingsAMTM2.2%
- TG TherapeuticsTGTX2.1%
- Phathom PharmaceuticalsPHAT1.9%
Portfolio by sector
- ● Health Care 47%
- ● Financials 16%
- ● Consumer Discretionary 14%
- ● Industrials 8%
- ● Information Technology 3%
- ● Energy 3%
- ● Materials 2%
- ● SPAC / vehículos 2%
- ● Communication Services 2%
- ● Real Estate 2%
- ● No sector 1%
Declared options (25)
Besides stocks, 683 Capital Management declared 22 puts (they gain if the stock falls) and 3 calls (they gain if it rises) with a notional of $949M. 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.
- PUTPalantir TechnologiesPLTR$283M
- PUTEli LillyLLY$185M
- PUTNVIDIANVDA$91.2M
- PUTState Street SPDR S&P Biotech ETFXBInew this quarter$85.5M
- PUTAbbVieABBVnew this quarter$61.7M
- PUTMadrigal PharmaceuticalsMDGL$48.3M
- PUTPraxis Precision MedicinesPRAX$37.0M
- PUTAlnylam PharmaceuticalsALNY$32.4M
- PUTARK Genomic Revolution ETFARKG$31.5M
- PUTIonQIONQ$25.9M
- CALLuniQureQURE$14.6M
- PUTModernaMRNA$10.9M
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%; more than 20% is options. 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.
- Wolf Hill Capital ManagementInvestment firm · $1.0 bn
- Melqart Asset Management (UK)Investment firm · $1.1 bn
- Engine Capital ManagementInvestment firm · $1.0 bn
- Apis Capital AdvisorsInvestment firm · $1.0 bn
- Minneapolis Portfolio Management Group$1.1 bn
- Broad Bay Capital ManagementInvestment firm · $1.1 bn