683 Capital Management, LLC — 13F Holdings & Portfolio

CIK 1404574 · latest 13F-HR filed 2026-08-14

683 Capital Management, LLC manages $2.04B in 13F-reported U.S. long-equity assets across 153 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are PLTR (13.91%), LLY (9.07%), NVDA (4.48%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 19 new positions and exited 99; 47 existing positions rose in reported value and 34 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

AUM

$2.04B

Long-equity book

Holdings

153

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+19 / −99 / ↑47 / ↓34

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26

COF6.7% · -3%CVNA4.5% · +384%ANAB4.1% · +6%KSPI3.7% · -1%BBIO3.7% · 0%BDX3.5% · +11%MOH3.5% · +3%HGV3.3% · -11%PTGX3.3% · -18%MGTX2.9% · -6%WVE2.6% · +1%QURE2.4% · +15%AMLX2.1% · -16%AMTM2.1% · +42%TGTX2.0% · -34%PHAT1.8% · 0%U1.6% · new WAL1.5% · -11%IAG1.5% · -4%ELV1.4% · 0%TRAX1.4% · new KNOP1.4% · +2%SRPT1.3% · +4%UNH1.2% · 0%SE1.2% · new GOOGL1.1% · -3%ZVRA1.1% · -12%GPC1.1% · -4%ARIS1.1% · -4%IFRX1.0% · +53%CPNG1.0% · +7%GXO1.0% · -57%HRMY1.0% · new ALNY1.0% · +67%NU0.9% · new HHH0.9% · +294%ASTH0.9% · -70%ENVA0.9% · 0%SDRL0.8% · -4%LEN0.8% · +1900%B0.8% · -40%LXEO0.8% · +56%VTOL0.8% · +10%ICLR0.8% · -23%BLDR0.7% · +12%STTK0.7% · +45%ATEX0.6% · +44%RNAC0.6% · +97%NE0.6% · +17%GOSS0.6% · +684%ALEC0.6% · 0%DDI0.6% · +7%AIV0.6% · +45%CDLX0.5% · +32%MCO0.5% · 0%SPGI0.5% · 0%ERII0.4% · -4%AMZN0.4% · -28%BNED0.4% · -8%RNA0.4% · 0%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 39.2%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Mar 30, 2026.

Assets Under Management

$2.44B

Discretionary

$2.44B

Employees

Accounts

Address

1700 BROADWAY
SUITE 4200
NEW YORK, NY 10019

Phone

(212) 554-2389

Name	Title / Status	Ownership	Type
LIU, MIMI KUAN-LING, NMN Control	CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER since Apr 2014	Less than 5%	Individual
PATT, JOSEPH, S Control	PARTNER since Nov 2011	25–50%	Individual
ROSENTHAL, MARK, CAREY Control	CHIEF FINANCIAL OFFICER since Dec 2022	Less than 5%	Individual
ZWEIMAN, ARI, JONATHAN Control	MANAGING MEMBER since May 2006	50–75%	Individual

Ownership & leadership changes · 4 filings with changes since Feb 6, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Mar 6, 2024 filing

AddedROSENTHAL, MARK, CAREY · CHIEF FINANCIAL OFFICER · Less than 5% · control person
ChangedPATT, JOSEPH, S · title HEAD TRADER → PARTNER

Oct 7, 2022 filing

No longer listedLEIBEL, ALAN, LANCE · CHIEF FINANCIAL OFFICER/CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Mar 2011
ChangedLIU, MIMI KUAN-LING, NMN · title CHIEF OPERATING OFFICER → CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER

Mar 29, 2018 filing

No longer listedLCS-683, LLC · MEMBER · 10–25% · listed since Aug 2006
No longer listedLEVIN, JOHN, ANDREW · MANAGING MEMBER · 75% or more · indirect via LCS-683, LLC · control person · listed since Aug 2006
ChangedLEIBEL, ALAN, LANCE · now a control person

Mar 27, 2015 filing

AddedLIU, MIMI KUAN-LING, NMN · CHIEF OPERATING OFFICER · Less than 5% · control person

Feb 6, 2012 filing (earliest on record)

ListedLCS-683, LLC · MEMBER · 10–25%
ListedLEIBEL, ALAN, LANCE · CHIEF FINANCIAL OFFICER/CHIEF COMPLIANCE OFFICER · Less than 5%
ListedLEVIN, JOHN, ANDREW · MANAGING MEMBER · 75% or more · indirect via LCS-683, LLC · control person
ListedPATT, JOSEPH, S · HEAD TRADER · 25–50% · control person
ListedZWEIMAN, ARI, JONATHAN · MANAGING MEMBER · 50–75% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

UNIQURE NV$18.3M +224.0%
MOLINA HEALTHCARE INC$16.4M +76.9%
ANAPTYSBIO INC$9.9M +28.5%
MEIRAGTX HLDGS PLC$9.9M +46.5%
LENNAR CORP$8.6M +1984.1%

Show all 47 →

Top Trims

GXO LOGISTICS INCORPORATED-$15.0M -58.0%
BARRICK MNG CORP-$7.4M -45.5%
ASTRANA HEALTH INC-$7.4M -43.2%
WAVE LIFE SCIENCES LTD-$6.8M -19.0%
GRAPHIC PACKAGING HLDG CO-$4.5M -88.2%

Show all 34 →

New Positions

Show all 19 →

Exited Positions

ELI LILLY & CO$13.8M
AMICUS THERAPEUTIC$11.2M
GOSSAMER BIO INC$10.6M
APELLIS PHARMACEUTICALS INC$10.1M
LENNAR CORP$9.7M

Show all 99 →

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#	Issuer	Symbol	CUSIP	Value	Δ

683 Capital Management, LLC Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

#	Issuer	Symbol	CUSIP	Value	Weight	Shares	Type
1	PALANTIR TECHNOLOGIES INC Put	PLTR	69608A108	$283.4M	13.91%	2,428,700	SH
2	ELI LILLY & CO Put	LLY	532457108	$184.7M	9.07%	154,000	SH
3	NVIDIA CORPORATION Put	NVDA	67066G104	$91.2M	4.48%	456,000	SH
4	SPDR SERIES TRUST Put	XBI	78464A870	$85.5M	4.20%	540,000	SH
5	CAPITAL ONE FINL CORP	COF	14040H105	$73.2M	3.60%	365,000	SH
6	ABBVIE INC Put	ABBV	00287Y109	$61.7M	3.03%	245,000	SH
7	CARVANA CO	CVNA	146869102	$49.4M	2.42%	750,000	SH
8	MADRIGAL PHARMACEUTICALS INC Put	MDGL	558868105	$48.3M	2.37%	90,000	SH
9	ANAPTYSBIO INC	ANAB	032724106	$44.6M	2.19%	660,000	SH
10	KASPI KZ JSC	KSPI	48581R205	$40.7M	2.00%	470,000	SH
11	BRIDGEBIO PHARMA INC	BBIO	10806XAB8	$38.8M	1.90%	21,750,000	PRN
12	BECTON DICKINSON & CO	BDX	075887109	$37.8M	1.86%	250,000	SH
13	MOLINA HEALTHCARE INC	MOH	60855R100	$37.7M	1.85%	165,000	SH
14	PRAXIS PRECISION MEDICINES I Put	PRAX	74006W207	$37.0M	1.82%	110,400	SH
15	HILTON GRAND VACATIONS INC	HGV	43283X105	$36.1M	1.77%	690,000	SH
16	PROTAGONIST THERAPEUTICS INC	PTGX	74366E102	$35.5M	1.75%	290,000	SH
17	ALNYLAM PHARMACEUTICALS INC Put	ALNY	02043Q107	$32.4M	1.59%	107,500	SH
18	ARK ETF TR Put	ARKG	00214Q302	$31.5M	1.55%	750,000	SH
19	MEIRAGTX HLDGS PLC	MGTX	G59665102	$31.1M	1.53%	2,300,000	SH
20	WAVE LIFE SCIENCES LTD	WVE	Y95308105	$28.8M	1.41%	4,950,000	SH
21	UNIQURE NV	QURE	N90064101	$26.5M	1.30%	575,000	SH
22	IONQ INC Put	IONQ	46222L108	$25.9M	1.27%	486,700	SH
23	AMYLYX PHARMACEUTICALS INC	AMLX	03237H101	$23.0M	1.13%	1,279,512	SH
24	AMENTUM HOLDINGS INC	AMTM	023939101	$22.7M	1.12%	1,100,000	SH
25	TG THERAPEUTICS INC	TGTX	88322Q108	$21.4M	1.05%	389,081	SH
26	PHATHOM PHARMACEUTICALS INC	PHAT	71722W107	$20.1M	0.99%	1,850,000	SH
27	UNITY SOFTWARE INC	U	91332U101	$17.6M	0.86%	615,000	SH
28	WESTERN ALLIANCE BANCORP	WAL	957638109	$16.4M	0.81%	200,000	SH
29	IAMGOLD CORP	IAG	450913108	$16.0M	0.79%	1,010,000	SH
30	ELEVANCE HEALTH INC FORMERLY	ELV	036752103	$15.5M	0.76%	40,000	SH
31	FIRST TRACKS BIOTHERAPEUTICS	TRAX	337185102	$15.1M	0.74%	750,000	SH
32	KNOT OFFSHORE PARTNERS LP	KNOP	Y48125101	$15.0M	0.74%	1,505,000	SH
33	UNIQURE NV Call	QURE	N90064101	$14.6M	0.72%	316,200	SH
34	SAREPTA THERAPEUTICS INC	SRPT	803607100	$14.1M	0.69%	782,500	SH
35	UNITEDHEALTH GROUP INC	UNH	91324P102	$13.3M	0.65%	32,000	SH
36	SEA LTD	SE	81141R100	$12.9M	0.64%	135,000	SH
37	ALPHABET INC	GOOGL	02079K305	$12.5M	0.61%	35,000	SH
38	ZEVRA THERAPEUTICS INC	ZVRA	488445206	$12.3M	0.60%	855,000	SH
39	GENUINE PARTS CO	GPC	372460105	$11.9M	0.59%	101,000	SH
40	ARIS MINING CORPORATION	ARIS	04040Y109	$11.5M	0.56%	770,000	SH
41	INFLARX NV	IFRX	N44821101	$11.3M	0.56%	5,065,000	SH
42	COUPANG INC	CPNG	22266T109	$11.3M	0.55%	650,000	SH
43	MODERNA INC Put	MRNA	60770K107	$10.9M	0.54%	156,000	SH
44	GXO LOGISTICS INCORPORATED	GXO	36262G101	$10.9M	0.54%	215,000	SH
45	HARMONY BIOSCIENCES HLDGS IN	HRMY	413197104	$10.7M	0.53%	294,000	SH
46	ALNYLAM PHARMACEUTICALS INC	ALNY	02043Q107	$10.5M	0.52%	35,000	SH
47	NU HLDGS LTD	NU	G6683N103	$10.0M	0.49%	750,000	SH
48	HOWARD HUGHES HOLDINGS INC	HHH	44267T102	$10.0M	0.49%	140,000	SH
49	ASTRANA HEALTH INC	ASTH	03763A207	$9.7M	0.48%	210,000	SH
50	ENOVA INTL INC	ENVA	29357K103	$9.6M	0.47%	40,000	SH

Filing History

Period	Filed	AUM	Holdings	Accession
2026-06-30	2026-08-14	$2.04B	153	0001404574-26-000023
2026-03-31	2026-05-15	$1.92B	237	0001404574-26-000018
2025-12-31	2026-02-17	$2.30B	234	0001404574-26-000003
2025-09-30	2025-11-14	$1.91B	139	0001404574-25-000002

Filer Information

Address

1700 BROADWAY
SUITE 4200
NEW YORK, NY 10019

Phone

(212) 554-2379

Filing Manager

683 Capital Management, LLC

NEW YORK, NY

Signatory

Ari Zweiman

Managing Member