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Super Investors / Weiss Asset Management LP
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Weiss Asset Management LP

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$9.54B
Positions
624
Quarter ended
June 30, 2026
Filed
August 14, 2026

Reported portfolio value by quarter (53 quarters reported)

$9.54B $83.2M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$292M in Q2 2013 → $9.54B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Nvidia Corporation 11.0% Trimmed 5.7% 5,263,485 $1.05B
Micron Technology Inc 9.0% Added 683% 743,769 $859M
Super Micro Computer Inc 2.6% New 4,850,000 $249M
Super Micro Computer Inc 2.6% Added 68% 249,862,000 $246M
Super Micro Computer Inc 2.2% Added 133% 230,956,000 $212M
Super Micro Computer Inc Put 2.2% Added 1309% 7,046,400 $207M
Nvidia Corporation Put 2.1% Trimmed 8.3% 1,000,000 $200M
Tesla Inc 2.0% Added 252% 455,491 $192M
Boeing Co 2.0% New 2,775,000 $188M
Strategy Inc 1.9% Added 154% 177,857,000 $182M
Nextera Energy Inc 1.4% Added 5.9% 2,697,000 $129M
Theravance Biopharma Inc 1.3% Unchanged 7,457,060 $127M
SA Sprott Asset Management LP 1.3% Added 78% 3,099,716 $125M
Micron Technology Inc Put 1.3% New 105,000 $121M
Strategy Inc 1.2% Added 131% 121,252,000 $117M
Super Micro Computer Inc 1.2% New 125,427,000 $111M
RM Robinhood Mkts Inc 1.1% Added 275% 1,090,686 $109M
ES Entrepreneurshares Series Tr 1.1% New 5,097,483 $107M
Albemarle Corp 1.1% Added 133% 1,910,000 $106M
Strategy Inc 1.1% Trimmed 35% 100,165,000 $103M
Strategy Inc 1.0% Added 305% 106,875,000 $98.7M
Roivant Sciences Ltd 0.9% New 2,542,652 $90M
HP Hewlett Packard Enterprise C 0.9% New 750,000 $87.4M
Strategy Inc 0.9% Trimmed 20% 97,266,000 $86.4M
SE Space Exploration Techn Corp 0.9% New 503,225 $86M
Marvell Technology Inc 0.9% New 286,219 $85.3M
UN Ugi Corp New 0.8% Trimmed 15% 60,240,000 $80.7M
TC Topbuild Cor 0.8% New 225,000 $79.8M
Vishay Intertechnology Inc 0.8% New 39,339,000 $78.1M
Envista Holdings Corporation 0.8% New 77,224,000 $77.2M
TT Tetra Tech Inc New 0.8% Added 341% 68,289,000 $72.1M
GC Greenbrier Cos Inc 0.7% Added 2.5% 61,697,000 $70.8M
Freshpet Inc 0.7% Added 114% 57,456,000 $67M
Mcewen Inc. 0.6% Unchanged 31,300,000 $60.2M
UA United Airls Hldgs Inc 0.6% New 425,223 $57.8M
Strategy Inc 0.6% Trimmed 5.6% 629,895 $54.8M
EP Epr Pptys 0.6% Unchanged 2,067,831 $53.4M
SA Sprott Asset Management LP 0.6% Trimmed 66% 2,801,789 $52.9M
MM Merit Med Sys Inc 0.5% New 47,137,000 $50.8M
Moonlake Immunotherapeutics 0.5% Added 51% 2,581,813 $50.3M
Firstenergy Corp 0.5% New 44,000,000 $48.9M
SA Sprott Asset Management LP 0.5% Added 233% 1,611,647 $48.6M
AG Apollo Global Mgmt Inc 0.5% Added 107% 775,000 $47.2M
IB Ishares Bitcoin Trust ETF 0.5% Trimmed 39% 1,400,417 $46.6M
Microchip Technology Inc. 0.5% New 600,000 $46.1M
Chevron Corporation 0.5% Added 4979% 271,962 $45.1M
Gamestop Corp 0.5% New 44,000,000 $44.6M
BI Bitmine Immersion Techs Inc 0.4% Trimmed 27% 3,142,727 $41.8M
Vertex Inc 0.4% New 41,211,000 $36.9M
Ppl Corp 0.4% Trimmed 22% 730,000 $35.7M
SS State Str SPDR S&P 500 ETF T Put 0.4% Unchanged 46,500 $34.7M
Qxo Inc 0.4% New 1,999,356 $34.5M
SS Select Sector SPDR Tr 0.4% New 415,000 $34.5M
Kkr & Co Inc 0.3% Added 18% 343,941 $31.6M
PI Patrick Inds Inc 0.3% New 21,216,000 $31.4M
Constellation Energy Corp 0.3% New 124,008 $30.8M
Iren Limited 0.3% Added 7.7% 652,350 $29.8M
PD Parsons Corp Del 0.3% New 30,000,000 $29.6M
BH Berkshire Hathaway Inc Del 0.3% New 58,646 $29.3M
Rivian Automotive Inc 0.3% New 24,250,000 $28.7M

Showing top 60 of 624 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Micron Technology Inc Added +648,765 +$749M 9.0%
Super Micro Computer Inc New +4,850,000 +$249M 2.6%
Super Micro Computer Inc Added +6,546,400 +$192M 2.2%
Boeing Co New +2,775,000 +$188M 2.0%
Tesla Inc Added +325,983 +$137M 2.0%
Micron Technology Inc New +105,000 +$121M 1.3%
Super Micro Computer Inc Added +131,877,000 +$121M 2.2%
Super Micro Computer Inc New +125,427,000 +$111M 1.2%
Strategy Inc Added +107,967,000 +$110M 1.9%
ES Entrepreneurshares Series Tr New +5,097,483 +$107M 1.1%

Showing the 10 largest of 870 changes.

Q1 2026

quarter ended March 31, 2026 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
Interdigital Inc Exited −59,897,000 −$247M
IB Ishares Bitcoin Trust ETF Trimmed −5,521,755 −$212M 1.5%
SA Sprott Asset Management LP New +8,190,370 +$200M 3.4%
Nvidia Corporation New +1,090,000 +$190M 3.2%
Nvidia Corporation Trimmed −1,060,725 −$185M 16.4%
Avidity Biosciences Inc Exited −2,161,093 −$156M
Strategy Inc Trimmed −1,150,100 −$144M 2.0%
Exact Sciences Corp Exited −129,000,000 −$135M
Super Micro Computer Inc New +148,376,000 +$129M 2.2%
Nextera Energy Inc New +2,547,000 +$128M 2.2%

Showing the 10 largest of 819 changes.

Q4 2025

quarter ended December 31, 2025 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
Kellanova Exited −3,153,422 −$259M
Nvidia Corporation Exited −1,000,000 −$187M
Tesla Inc Trimmed −407,909 −$183M 0.5%
Strategy Inc Trimmed −1,084,000 −$165M 4.3%
Avidity Biosciences Inc New +2,161,093 +$156M 2.1%
Nvidia Corporation Added +793,701 +$148M 16.4%
IB Ishares Bitcoin Trust ETF Exited −2,200,000 −$143M
Exact Sciences Corp New +129,000,000 +$135M 1.8%
Ionis Pharmaceuticals Inc Exited −107,295,000 −$132M
IE Ishares Ethereum Tr Trimmed −5,813,764 −$130M 0.6%

Showing the 10 largest of 905 changes.

Q3 2025

quarter ended September 30, 2025 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Trimmed −3,000,000 −$560M 2.2%
Strategy Inc Trimmed −820,315 −$264M 5.2%
Kellanova Added +3,026,520 +$248M 3.0%
IE Ishares Ethereum Tr Added +7,300,442 +$230M 2.9%
Tesla Inc Added +471,916 +$210M 2.6%
IB Ishares Bitcoin Trust ETF Added +2,840,815 +$185M 7.5%
Strategy Inc New +95,258,000 +$180M 2.1%
Cyberark Software Ltd New +256,726 +$124M 1.4%
Camtek Ltd Exited −66,308,000 −$105M
Strategy Inc Trimmed −300,000 −$96.7M 11.9%

Showing the 10 largest of 802 changes.

Q2 2025

quarter ended June 30, 2025 · filed February 17, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +2,698,060 +$426M 10.5%
M Microstrategy Inc Added +992,689 +$401M 10.2%
M Microstrategy Inc Added +800,000 +$323M 16.1%
Nvidia Corporation Added +2,000,000 +$316M 7.2%
IB Ishares Bitcoin Trust ETF Added +5,101,974 +$312M 5.0%
IT Intra-cellular Therapies Inc Exited −1,640,029 −$216M
Coinbase Global Inc Added +469,700 +$165M 2.4%
Tesla Inc Trimmed −443,169 −$141M 0.1%
Super Micro Computer Inc Trimmed −120,062,000 −$126M 1.4%
Nrg Energy Inc Exited −51,521,000 −$120M

Showing the 10 largest of 532 changes.

Q1 2025

quarter ended March 31, 2025 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
M Microstrategy Inc Added +1,237,400 +$357M 15.6%
M Microstrategy Inc Added +1,104,482 +$318M 7.0%
Nvidia Corporation Added +2,867,603 +$311M 6.8%
Super Micro Computer Inc New +236,946,000 +$230M 4.6%
Nvidia Corporation New +2,000,000 +$217M 4.3%
IT Intra-cellular Therapies Inc New +1,640,029 +$216M 4.3%
Hashicorp Inc Exited −5,349,043 −$183M
SS SPDR S&P 500 ETF Tr Trimmed −268,800 −$150M 0.8%
Tesla Inc New +470,508 +$122M 2.4%
M Microstrategy Inc Exited −42,164,000 −$87.2M

Showing the 10 largest of 688 changes.

Q4 2024

quarter ended December 31, 2024 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
Hashicorp Inc New +5,349,043 +$183M 3.4%
IB Ishares Bitcoin Trust ETF New +1,944,105 +$103M 1.9%
Perficient Inc Exited −91,259,000 −$89.9M
M Microstrategy Inc New +42,164,000 +$87.2M 1.6%
M Microstrategy Inc Added +232,800 +$67.4M 8.0%
Boeing Co New +346,050 +$61.3M 1.1%
Catalent Inc Exited −997,061 −$60.4M
Weibo Corp New +49,593,000 +$54.5M 1.0%
Juniper Networks Inc Added +1,430,654 +$53.6M 1.6%
Ionis Pharmaceuticals Inc Added +51,966,000 +$50.3M 1.4%

Showing the 10 largest of 890 changes.

Q3 2024

quarter ended September 30, 2024 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
M Microstrategy Inc Added +1,206,500 +$203M 4.5%
SS SPDR S&P 500 ETF Tr Trimmed −221,900 −$127M 4.4%
Nextera Energy Inc Trimmed −1,840,000 −$103M 1.0%
Camtek Ltd New +61,950,000 +$92.3M 2.0%
EC Equity Comwlth New +3,861,770 +$76.8M 1.7%
Nio Inc New +75,142,000 +$69.4M 1.5%
Nextera Energy Inc New +800,000 +$67.6M 1.5%
Catalent Inc Added +990,172 +$60M 1.3%
Conagra Brands Inc Exited −1,685,196 −$47.9M
Petiq Inc New +38,115,000 +$44.4M 1.0%

Showing the 10 largest of 638 changes.

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