Weiss Asset Management LP

BOSTON, MA · CIK 1357550 · 13F filing filed 2026-08-14

SEC-registered investment adviser since 2012 · limited partnership

Assets managed$15.6bn
Staff139 · 64 in investment roles
Main clients (by assets)Private funds 100%
Private funds2 (2 hedge) · $15.6bn gross assets
Websiteweissasset.com
Form ADV · 2026-03-20SEC adviser record

Legal entityWEISS ASSET MANAGEMENT LP (US)

$8.9bn reported value +121.7% vs Q1 2026

613positions

38.5%in top 10

0 new 73 added 81 reduced 0 sold out vs Q1 2026

This manager withheld holdings under SEC confidential treatment in both Q2 2026 and Q1 2026, so new and sold-out positions can't be determined.

Options: 1 call positions ($6.7m notional), 10 put positions ($610.4m notional) – listed below, not included above.

This report includes the holdings of 2 other managers that share the investment decisions:

BIP GP LLC – reports through this filing
WEISS ANDREW M – reports through this filing

Shares in two reports are counted once in each security's totals.

Holdings, Q2 2026

The small lines show how much was held over the last 4 quarters (adjusted for stock splits).

#	Security	Ticker	Shares	Value	% of portfolio	Change	Shares change
1	NVIDIA CORPORATION COM NVDA	NVDA	5,263,485	$1.1bn11.80%	11.80%	Reduced -318.1k	-318,084 -5.7%
2	MICRON TECHNOLOGY INC COM MU	MU	743,769	$858.5m9.62%	9.62%	Added +648.8k	+648,765 682.9%
3	SUPER MICRO COMPUTER INC 7 DEP CM SR A WI SMCI 7 06.01.29	SMCI 7 06.01.29	4,850,000	$249.1m2.79%	2.79%	Not comparable
4	SUPER MICRO COMPUTER INC NOTE 2.250% 7/1 · principal SMCI 2.25 07.15.28 · principal	SMCI 2.25 07.15.28	249,862,000	$245.6m2.75%	2.75%	Added +101.5m	+101,486,000 68.4%
5	SUPER MICRO COMPUTER INC NOTE 3.500% 3/0 · principal SMCI 3.5 03.01.29 · principal	SMCI 3.5 03.01.29	230,956,000	$212.0m2.37%	2.37%	Added +131.9m	+131,877,000 133.1%
6	TESLA INC COM TSLA	TSLA	455,491	$191.6m2.15%	2.15%	Added +326.0k	+325,983 251.7%
7	BOEING CO DEP CONV PFD A BA 6 10.15.27	BA 6 10.15.27	2,775,000	$188.3m2.11%	2.11%	Not comparable
8	STRATEGY INC NOTE 0.625% 3/1 · principal MSTR 0.625 03.15.30 · principal	MSTR 0.625 03.15.30	177,857,000	$181.9m2.04%	2.04%	Added +108.0m	+107,967,000 154.5%
9	NEXTERA ENERGY INC UNIT 02/15/2029 NEE 7.375 02.15.29	NEE 7.375 02.15.29	2,697,000	$129.4m1.45%	1.45%	Added +150.0k	+150,000 5.9%
10	THERAVANCE BIOPHARMA INC COM 0TB	0TB	7,457,060	$126.8m1.42%	1.42%	Unchanged
11	SPROTT ASSET MANAGEMENT LP TR UNIT CEF	CEF	3,099,716	$124.7m1.40%	1.40%	Added +1.4m	+1,360,216 78.2%
12	STRATEGY INC NOTE 2.250% 6/1 · principal MSTR 2.25 06.15.32 · principal	MSTR 2.25 06.15.32	121,252,000	$117.4m1.32%	1.32%	Added +68.9m	+68,857,000 131.4%
13	SUPER MICRO COMPUTER INC NOTE 6/1 · principal SMCI 0 06.15.30 · principal	SMCI 0 06.15.30	125,427,000	$111.1m1.24%	1.24%	Not comparable
14	ROBINHOOD MKTS INC COM CL A HOOD	HOOD	1,090,686	$109.4m1.23%	1.23%	Added +799.7k	+799,699 274.8%
15	ENTREPRENEURSHARES SERIES TR ERSH PRI PUB ETF XOVR	XOVR	5,097,483	$107.3m1.20%	1.20%	Not comparable
16	ALBEMARLE CORP 7.25% DEP SHS A ALB 7.25 03.01.27	ALB 7.25 03.01.27	1,910,000	$105.9m1.19%	1.19%	Added +1.1m	+1,090,000 132.9%
17	STRATEGY INC NOTE 0.625% 9/1 · principal MSTR 0.625 09.15.28 · principal	MSTR 0.625 09.15.28	100,165,000	$102.8m1.15%	1.15%	Reduced -54.7m	-54,655,000 -35.3%
18	STRATEGY INC NOTE 0.875% 3/1 · principal MSTR 0.875 03.15.31 · principal	MSTR 0.875 03.15.31	106,875,000	$98.7m1.11%	1.11%	Added +80.5m	+80,515,000 305.4%
19	ROIVANT SCIENCES LTD SHS ROIV	ROIV	2,542,652	$90.0m1.01%	1.01%	Not comparable
20	HEWLETT PACKARD ENTERPRISE C 7.625 MAND CONV HPE 7.625 09.01.27	HPE 7.625 09.01.27	750,000	$87.4m0.98%	0.98%	Not comparable
21	STRATEGY INC NOTE 3/0 · principal MSTR 0 03.01.30 · principal	MSTR 0 03.01.30	97,266,000	$86.4m0.97%	0.97%	Reduced -23.8m	-23,750,000 -19.6%
22	SPACE EXPLORATION TECHN CORP CLASS A COM STK SPCX	SPCX	503,225	$86.0m0.96%	0.96%	Not comparable
23	MARVELL TECHNOLOGY INC COM MRVL	MRVL	286,219	$85.3m0.96%	0.96%	Not comparable
24	UGI CORP NEW NOTE 5.000% 6/0 · principal UGI 5 06.01.28 · principal	UGI 5 06.01.28	60,240,000	$80.7m0.90%	0.90%	Reduced -10.7m	-10,650,000 -15.0%
25	TOPBUILD CORP COM BLD	BLD	225,000	$79.8m0.89%	0.89%	Not comparable
26	VISHAY INTERTECHNOLOGY INC NOTE 2.250% 9/1 · principal VSH 2.25 09.15.30 · principal	VSH 2.25 09.15.30	39,339,000	$78.1m0.87%	0.87%	Not comparable
27	ENVISTA HOLDINGS CORPORATION NOTE 1.750% 8/1 · principal NVST 1.75 08.15.28 · principal	NVST 1.75 08.15.28	77,224,000	$77.2m0.87%	0.87%	Not comparable
28	TETRA TECH INC NEW DBCV 2.250% 8/1 · principal TTEK 2.25 08.15.28 · principal	TTEK 2.25 08.15.28	68,289,000	$72.1m0.81%	0.81%	Added +52.8m	+52,789,000 340.6%
29	GREENBRIER COS INC NOTE 2.875% 4/1 · principal GBX 2.875 04.15.28 · principal	GBX 2.875 04.15.28	61,697,000	$70.8m0.79%	0.79%	Added +1.5m	+1,500,000 2.5%
30	FRESHPET INC NOTE 3.000% 4/0 · principal FRPT 3 04.01.28 · principal	FRPT 3 04.01.28	57,456,000	$67.0m0.75%	0.75%	Added +30.6m	+30,550,000 113.5%
31	MCEWEN INC. NOTE 5.250% 8/1 · principal MUX 5.25 08.15.30 · principal	MUX 5.25 08.15.30	31,300,000	$60.2m0.67%	0.67%	Unchanged
32	UNITED AIRLS HLDGS INC COM UAL	UAL	425,223	$57.8m0.65%	0.65%	Not comparable
33	MICROSTRATEGY INC CL A NEW MSTR	MSTR	629,895	$54.8m0.61%	0.61%	Reduced -37.6k	-37,607 -5.6%
34	EPR PPTYS PFD C CV 5.75% EPR 5.75 PERP C	EPR 5.75 PERP C	2,067,831	$53.4m0.60%	0.60%	Unchanged
35	SPROTT PHYSICAL SILVER TR TR UNIT PSLV	PSLV	2,801,789	$52.9m0.59%	0.59%	Reduced -5.4m	-5,388,581 -65.8%
36	MERIT MED SYS INC NOTE 3.000% 2/0 · principal MMSI 3 02.01.29 · principal	MMSI 3 02.01.29	47,137,000	$50.8m0.57%	0.57%	Not comparable
37	MOONLAKE IMMUNOTHERAPEUTICS CLASS A ORD MLTX	MLTX	2,581,813	$50.3m0.56%	0.56%	Added +873.5k	+873,485 51.1%
38	FIRSTENERGY CORP NOTE 3.875% 1/1 · principal FE 3.875 01.15.31 · principal	FE 3.875 01.15.31	44,000,000	$48.9m0.55%	0.55%	Not comparable
39	SPROTT PHYSICAL GOLD TR UNIT PHYS	PHYS	1,611,647	$48.6m0.54%	0.54%	Added +1.1m	+1,127,546 232.9%
40	APOLLO GLOBAL MGMT INC SER A MAND CNV APO 6.75 07.31.26	APO 6.75 07.31.26	775,000	$47.2m0.53%	0.53%	Added +400.0k	+400,000 106.7%
41	ISHARES BITCOIN TRUST ETF SHS BEN INT IBIT	IBIT	1,400,417	$46.6m0.52%	0.52%	Reduced -879.8k	-879,811 -38.6%
42	MICROCHIP TECHNOLOGY INC. DEP SHS REPSTG MCHP 7.5 03.15.28	MCHP 7.5 03.15.28	600,000	$46.1m0.52%	0.52%	Not comparable
43	CHEVRON CORP NEW COM CVX	CVX	271,962	$45.1m0.51%	0.51%	Added +266.6k	+266,607 4978.7%
44	GAMESTOP CORP NOTE 6/1 · principal GME 0 06.15.32 · principal	GME 0 06.15.32	44,000,000	$44.6m0.50%	0.50%	Not comparable
45	BITMINE IMMERSION TECNOLOGIE COM NEW BMNR	BMNR	3,142,727	$41.8m0.47%	0.47%	Reduced -1.2m	-1,185,567 -27.4%
46	VERTEX INC NOTE 0.750% 5/0 · principal VERX 0.75 05.01.29 · principal	VERX 0.75 05.01.29	41,211,000	$36.9m0.41%	0.41%	Not comparable
47	PPL CORP UNIT 02/15/2029 PPL 7 02.15.29	PPL 7 02.15.29	730,000	$35.7m0.40%	0.40%	Reduced -200.0k	-200,000 -21.5%
48	QXO INC COM NEW QXO	QXO	1,999,356	$34.5m0.39%	0.39%	Not comparable
49	SELECT SECTOR SPDR TR SBI CONS STPLS XLP	XLP	415,000	$34.5m0.39%	0.39%	Not comparable
50	KKR & CO INC COM KKR	KKR	343,941	$31.6m0.35%	0.35%	Added +52.4k	+52,436 18.0%
51	PATRICK INDS INC NOTE 1.750%12/0 · principal PATK 1.75 12.01.28 · principal	PATK 1.75 12.01.28	21,216,000	$31.4m0.35%	0.35%	Not comparable
52	CONSTELLATION ENERGY CORP COM CEG	CEG	124,008	$30.8m0.35%	0.35%	Not comparable
53	IREN LIMITED ORDINARY SHARES IREN	IREN	652,350	$29.8m0.33%	0.33%	Added +46.7k	+46,731 7.7%
54	PARSONS CORP DEL NOTE 2.625% 3/0 · principal PSN 2.625 03.01.29 · principal	PSN 2.625 03.01.29	30,000,000	$29.6m0.33%	0.33%	Not comparable
55	BERKSHIRE HATHAWAY INC DEL CL B NEW BRK.B	BRK.B	58,646	$29.3m0.33%	0.33%	Not comparable
56	RIVIAN AUTOMOTIVE INC NOTE 4.625% 3/1 · principal RIVN 4.625 03.15.29 · principal	RIVN 4.625 03.15.29	24,250,000	$28.7m0.32%	0.32%	Not comparable
57	CELLEBRITE DI LTD ORDINARY SHARES CLBT	CLBT	1,923,351	$28.1m0.31%	0.31%	Added +23.5k	+23,510 1.2%
58	GENERAL DYNAMICS CORP COM GD	GD	77,814	$27.6m0.31%	0.31%	Added +75.4k	+75,420 3150.4%
59	COEUR MNG INC COM NEW CDE	CDE	1,679,674	$27.4m0.31%	0.31%	Added +1.4m	+1,428,023 567.5%
60	BARON ETF TR FIRST PRINC ETF RONB	RONB	1,087,386	$26.5m0.30%	0.30%	Not comparable
61	STANDARDAERO INC COM SARO	SARO	866,740	$25.9m0.29%	0.29%	Not comparable
62	ISHARES TR CORE S&P SCP ETF IJR	IJR	171,653	$25.5m0.29%	0.29%	Not comparable
63	SOUTHWEST GAS HLDGS INC COM SWX	SWX	283,242	$25.1m0.28%	0.28%	Added +259.1k	+259,127 1074.5%
64	APARTMENT INVT & MGMT CO CL A AIV	AIV	8,150,456	$24.2m0.27%	0.27%	Unchanged
65	CORE SCIENTIFIC INC NEW COM CORZ	CORZ	936,495	$24.0m0.27%	0.27%	Added +378.9k	+378,905 68.0%
66	VIAVI SOLUTIONS INC COM VIAV	VIAV	501,507	$23.9m0.27%	0.27%	Not comparable
67	BRIDGEBIO PHARMA INC COM BBIO	BBIO	320,184	$23.8m0.27%	0.27%	Not comparable
68	TXNM ENERGY INC COM TXNM	TXNM	411,513	$23.4m0.26%	0.26%	Added +246.1k	+246,108 148.8%
69	APPLIED OPTOELECTRONICS INC COM AAOI	AAOI	151,868	$22.5m0.25%	0.25%	Not comparable
70	CEREBRAS SYSTEMS INC COM CL A CBRS	CBRS	96,780	$21.4m0.24%	0.24%	Not comparable
71	LIFE TIME GROUP HOLDINGS INC COMMON STOCK LTH	LTH	521,782	$21.3m0.24%	0.24%	Not comparable
72	EPR PPTYS CONV PFD 9% SR E EPR 9 PERP E	EPR 9 PERP E	640,439	$20.9m0.23%	0.23%	Unchanged
73	TG THERAPEUTICS INC COM TGTX	TGTX	375,082	$20.6m0.23%	0.23%	Not comparable
74	ZIM INTEGRATED SHIPPING SERV SHS ZIM	ZIM	787,799	$20.5m0.23%	0.23%	Added +511.4k	+511,388 185.0%
75	RUBRIK INC. NOTE 6/1 · principal RBRK 0 06.15.30 · principal	RBRK 0 06.15.30	20,000,000	$20.4m0.23%	0.23%	Not comparable
76	SEMTECH CORP COM SMTC	SMTC	125,430	$20.3m0.23%	0.23%	Not comparable
77	CENTENE CORP DEL COM CNC	CNC	315,006	$20.2m0.23%	0.23%	Reduced -424.0k	-423,959 -57.4%
78	AXSOME THERAPEUTICS INC COM AXSM	AXSM	80,000	$19.6m0.22%	0.22%	Not comparable
79	AXCELIS TECHNOLOGIES INC COM NEW ACLS	ACLS	103,258	$19.6m0.22%	0.22%	Not comparable
80	ARCH CAP GROUP LTD ORD ACGL	ACGL	201,479	$19.6m0.22%	0.22%	Added +159.2k	+159,179 376.3%
81	BITWISE SOLANA STAKING ETF COM SHS OF BENEF BSOL	BSOL	1,846,208	$18.5m0.21%	0.21%	Not comparable
82	HILTON WORLDWIDE HLDGS INC COM HLT	HLT	55,187	$18.2m0.20%	0.20%	Not comparable
83	STEEL DYNAMICS INC COM STLD	STLD	78,740	$18.1m0.20%	0.20%	Not comparable
84	DIAMONDBACK ENERGY INC COM FANG	FANG	102,698	$18.1m0.20%	0.20%	Not comparable
85	NEW AMER ACQUISITION I CORP COM SHS CL A NWAX	NWAX	1,767,280	$17.9m0.20%	0.20%	Unchanged
86	DOLLAR TREE INC COM DLTR	DLTR	148,307	$17.9m0.20%	0.20%	Not comparable
87	CONSTELLATION BRANDS INC CL A STZ	STZ	127,413	$17.7m0.20%	0.20%	Not comparable
88	ADVANCED ENERGY INDS COM AEIS	AEIS	46,911	$17.5m0.20%	0.20%	Not comparable
89	WESTERN DIGITAL CORP COM WDC	WDC	27,376	$17.5m0.20%	0.20%	Not comparable
90	WATTS WATER TECHNOLOGIES INC CL A WTS	WTS	44,331	$17.4m0.19%	0.19%	Not comparable
91	ENSIGN GROUP INC COM ENSG	ENSG	105,664	$16.9m0.19%	0.19%	Not comparable
92	HOST HOTELS & RESORTS INC COM HST	HST	700,872	$16.6m0.19%	0.19%	Not comparable
93	GUARDANT HEALTH INC COM GH	GH	109,876	$16.5m0.18%	0.18%	Not comparable
94	SOUTHERN CO COM SO	SO	171,203	$16.4m0.18%	0.18%	Added +39.9k	+39,903 30.4%
95	BLOOM ENERGY CORP COM CL A BE	BE	53,019	$16.0m0.18%	0.18%	Not comparable
96	SPX TECHNOLOGIES INC COM SPXC	SPXC	64,240	$15.7m0.18%	0.18%	Not comparable
97	CREDO TECHNOLOGY GROUP HOLDI ORDINARY SHARES CRDO	CRDO	55,920	$15.2m0.17%	0.17%	Not comparable
98	WEC ENERGY GROUP INC NOTE 4.375% 6/0 · principal WEC 4.375 06.01.29 · principal	WEC 4.375 06.01.29	12,000,000	$14.9m0.17%	0.17%	Not comparable
99	KASPI KZ JSC SPONSORED ADS KSPI	KSPI	171,026	$14.8m0.17%	0.17%	Added +58.2k	+58,224 51.6%
100	LATTICE SEMICONDUCTOR CORP COM LSCC	LSCC	96,040	$14.7m0.16%	0.16%	Not comparable

Options (notional value)

Underlying	Ticker	Type	Shares controlled	Notional	Change
SUPER MICRO COMPUTER INC SMCI · Put	SMCI	Put	7,046,400	$206.7m7.0m shares	Added
NVIDIA CORPORATION NVDA · Put	NVDA	Put	1,000,000	$200.1m1.0m shares	Reduced
MICRON TECHNOLOGY INC MU · Put	MU	Put	105,000	$121.2m105.0k shares	Not comparable
SPDR S&P 500 ETF TR SPY · Put	SPY	Put	46,500	$34.7m46.5k shares	Unchanged
MICROSTRATEGY INC MSTR · Put	MSTR	Put	200,000	$17.4m200.0k shares	Reduced
ALBEMARLE CORP ALB · Put	ALB	Put	100,000	$13.5m100.0k shares	Unchanged
MEDICAL PPTYS TRUST INC MPT · Put	MPT	Put	2,000,000	$9.2m2.0m shares	Unchanged
ISHARES BITCOIN TRUST ETF IBIT · Call	IBIT	Call	200,000	$6.7m200.0k shares	Not comparable
NIO INC NIO · Put	NIO	Put	1,000,000	$5.1m1.0m shares	Unchanged
SABLE OFFSHORE CORP SOC · Put	SOC	Put	700,000	$2.2m700.0k shares	Unchanged
IQIYI INC IQ · Put	IQ	Put	400,000	$416.0k400.0k shares	Unchanged

Stakes above 5%

Companies where this manager has reported owning more than 5% of a class of shares, on Schedule 13D (may seek influence) or 13G (passive): its latest filing for each, from 19 Dec 2024 on.

Company	Ticker	Stake	Change	Schedule	Last filed
EQUITY COMWLTH EQC · 13G · filed 2025-01-30	EQC	8.8%		13G	2025-01-30
RE MAX HLDGS INC RMAX · 13G · filed 2026-08-14	RMAX	6.8%≈ $14.3m	new	13G	2026-08-14
EMPERY DIGITAL INC EMPD · 13G · filed 2026-05-11	EMPD	6.3%≈ $6.8m	new	13G	2026-05-11
APARTMENT INVT & MGMT CO AIV · 13G · filed 2026-05-11	AIV	5.7%≈ $24.2m	new	13G	2026-05-11
NEW AMER ACQUISITION I CORP NWAX · 13G · filed 2026-02-17	NWAX	5.4%≈ $19.2m	new	13G	2026-02-17
CANAAN INC CAN · 13G · filed 2026-08-11	CAN	5.2%	-1.4 pts	13G	2026-08-11