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683 Capital Management, LLC

Institutional InvestorSimilar funds →SEC EDGAR: CIK 1404574
Institutional-grade research for retail investors

Sector Allocation

  • Healthcare48.2%$524.0M
  • Industrials12.9%$140.2M
  • Financials12.4%$135.4M
  • Consumer Discretionary11.5%$124.8M
  • Technology5.4%$59.1M
  • Materials4.2%$45.2M
  • Real Estate1.6%$16.8M
  • Energy1.4%$15.6M
  • Other1.4%$15.6M
  • Communication Services0.7%$7.1M

AUM History

13fpro.ai/research/fund/683-capital-management-llc-1404574

Conviction and streaks

Concentrating · top 10 = 39.1%

From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.

COF$COFConviction hold6.7% weight · held 10 quartersCVNA$CVNAConviction hold4.5% weight · held 10 quartersANAB$ANABConviction hold4.1% weight · held 6 quartersBBIO$BBIOConviction hold3.6% weight · held 10 quartersMOH$MOHConviction hold3.5% weight · held 4 quartersRNAC$RNACAccumulating+762% shares · 7 quarters runningDDI$DDIAccumulating+100% shares · 4 quarters runningMOH$MOHAccumulating+104% shares · 3 quarters runningLXEO$LXEOAccumulating+103% shares · 3 quarters runningCVNA$CVNAAccumulating+400% shares · 2 quarters runningINSE$INSETrimming-76% shares · 7 quarters runningPTGX$PTGXTrimming-42% shares · 5 quarters runningAMLX$AMLXTrimming-47% shares · 5 quarters runningGXO$GXOTrimming-77% shares · 5 quarters runningPANL$PANLTrimming-51% shares · 5 quarters running

Largest positions — Q2 2026

Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.

13fpro.ai/research/fund/683-capital-management-llc-1404574

683 Capital Management, LLC 13F holdings — Q2 2026

$2.0B portfolio (+6.3% QoQ) · 153 holdings · Q2 2026 13F · top 10 are 39% of the stock portfolio

Includes $949.0M of put/call options ($929.6M puts, $19.4M calls), which 13F rules report at the value of the underlying shares, not the premium at risk. Stocks alone: $1.1B. Weights use the stock portfolio.

All holdings — 683 Capital Management, LLC (Q2 2026)

153 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.

Company
PLTR$PLTRPUTPalantir Technologies Inc.$283.4M+4%
LLY$LLYPUTELI LILLY & Co$184.7M+15%
NVDA$NVDAPUTNVIDIA CORP$91.2M—
— PUTSPDR SERIES TRUST - ST STR SP BIOT$85.5MNew
ABBV$ABBVPUTAbbVie Inc.$61.7MNew
MDGL$MDGLPUTMADRIGAL PHARMACEUTICALS, INC.$48.3M—
PRAX$PRAXPUTPraxis Precision Medicines, Inc.$37.0M-2%
ALNY$ALNYPUTALNYLAM PHARMACEUTICALS, INC.$32.4M-16%
— PUTARK ETF TR - GENOMIC REV ETF$31.5M+114%
WVE$WVEWave Life Sciences, Inc.$28.8M+1%
QURE$QUREuniQure N.V.$26.5M+15%
IONQ$IONQPUTIonQ, Inc.$25.9M-8%
AMLX$AMLXAmylyx Pharmaceuticals, Inc.$23.0M-16%
AMTM$AMTMAmentum Holdings, Inc.$22.7M+42%
TGTX$TGTXTG THERAPEUTICS, INC.$21.4M-34%

What changed in Q2 2026

Against the previous quarter's 13F: 21 new, 33 added to, 46 trimmed, 103 sold out. Share-count changes; largest moves by dollar size first.

New positions (21)

  • PUTSPDR SERIES TRUST - ST STR SP BIOT$85.5M

    first bought this quarter

  • ABBV$ABBVPUTAbbVie Inc.$61.7M

    first bought this quarter

  • U$UUnity Software Inc.$17.6M

    first bought this quarter

  • TRAX$TRAXFirst Tracks Biotherapeutics, Inc.$15.1M

    first bought this quarter

  • SE$SESea Ltd$12.9M

    first bought this quarter

  • HRMY$HRMYHarmony Biosciences Holdings, Inc.$10.7M

    first bought this quarter

+15 more in the Excel export

Added to (33)

  • CVNA$CVNACARVANA CO.+384%

    now $49.4M · held 10+ qtrs

  • LLY$LLYPUTELI LILLY & Co+15%

    now $184.7M

  • PUTARK ETF TR - GENOMIC REV ETF+114%

    now $31.5M

  • PLTR$PLTRPUTPalantir Technologies Inc.+4%

    now $283.4M

  • LEN$LENLENNAR CORP /NEW/+1900%

    now $9.0M · held 7 qtrs

  • HHH$HHHHoward Hughes Holdings Inc.+294%

    now $10.0M · held 9 qtrs

+27 more in the Excel export

Trimmed (46)

  • QURE$QURECALLuniQure N.V.-75%

    now $14.6M

  • IMUX$IMUXIMMUNIC, INC.-94%

    now $2.3M · held 2 qtrs

  • ASTH$ASTHAstrana Health, Inc.-70%

    now $9.7M · held 2 qtrs

  • GXO$GXOGXO Logistics, Inc.-57%

    now $10.9M · held 9 qtrs, 5 trims in a row

  • TGTX$TGTXTG THERAPEUTICS, INC.-34%

    now $21.4M · held 4 qtrs

  • PTGX$PTGXProtagonist Therapeutics, Inc-18%

    now $35.5M · held 10+ qtrs, 5 trims in a row

+40 more in the Excel export

Sold out (103)

  • TSLA$TSLAPUTTesla, Inc.was $40.9M
  • LLY$LLYELI LILLY & Cowas $13.8M

    held 1 qtr

  • FOLD$FOLDAMICUS THERAPEUTICS, INC.was $11.2M

    held 5 qtrs

  • APLS$APLSApellis Pharmaceuticals, Inc.was $10.1M

    held 9+ qtrs

  • CCOI$CCOICALLCOGENT COMMUNICATIONS HOLDINGS, INC.was $9.4M
  • BKNG$BKNGBooking Holdings Inc.was $9.3M

+97 more in the Excel export

Firm AUM (Form ADV): $2.4B as of 2025-12-31 · SEC IAPD

Share

Holdings by quarter

Every 13F 683 Capital Management, LLC has filed, 36 earlier quarters. Pick one to see what it held then.

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Is it too late to follow 683 Capital Management?

Q2 2026 13F filed with the SEC on Aug 14, 2026. Prices are closing prices as of Oct 26, 2026.

Average quality of 683 Capital Management's top 20 holdings: 53/100 (our AI quality score, weighted by position size; 17 of the 20 are scored)

Top 10 since filing

-13.4%

Value-weighted move of the 10 largest stock positions

Turnover

14%

Last quarter; 68% over the last 4

Top 10 weight

39%

Share of the stock portfolio in its 10 largest positions

Held 4+ quarters

74%

Share of portfolio value in positions held a year or more

Highest-quality names it owns(among its 100 largest positions)

The 8 highest-scoring companies in this portfolio are a Pro feature.

How these are measured
  • Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
  • Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
  • Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q1 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
  • Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
  • Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.

Portfolio Overview

683 Capital Management, LLC disclosed 153 positions worth $2.0B in its Form 13F-HR for Q2 2026 — $1.1B in common stock plus $949.0M of put/call option positions (reported at underlying notional value, not premium at risk), led by $COF (CAPITAL ONE FINANCIAL CORP) at 6.7% of the equity portfolio, followed by $CVNA and $ANAB. During the quarter the fund opened 21 new positions and exited 103 and a full exit from $TSLA. The portfolio is most concentrated in Healthcare (48.2% of disclosed assets). All figures are sourced directly from 683 Capital Management, LLC’s Form 13F-HR filing with the SEC under CIK 1404574.

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AI-Powered Hedge Fund Analysis: 683 Capital Management, LLC

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Every holding in 683 Capital Management, LLC's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.