CIK: 0001357550
Total reported value
$5.9B
Reporting period: 2026-03-31 · Number of holdings: 488
Weiss Asset Management LP disclosed 488 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $5.9B and a quarterly turnover rate of 199.9%.
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Weiss Asset Management LP's disclosed holdings carry a Herfindahl concentration index of 0.047 — mathematically equivalent to about 21 equally-sized positions, well below its 488 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 4.65), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
New buy NVDA
New buy MSTR
New buy PSLV
New buy MSTR 0.625 09-15-28
Sold out RNAGBP
New buy SMCI 2.25 07-15-28
Showing top 200 holdings (of 488 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | Stock-Tech | 19.68% | +19.68% | NEW | |
| 2 | MSTR | Strategy INC | Stock-Tech | 3.46% | +3.46% | NEW | |
| 3 | PSLV | Sprott Physical Silver Trust | Stock-Other | 3.38% | +3.38% | NEW | |
| 4 | MSTR 0.625 09-15-28 | Strategy INC | Stock-Tech | 2.88% | +2.88% | NEW | |
| 5 | SMCI 2.25 07-15-28 | Super Micro Computer INC | Stock-Tech | 2.18% | +2.18% | NEW | |
| 6 | NEE 7.375 02-15-29 | Nextera Energy INC | Stock-Utilities | 2.17% | +2.17% | NEW | |
| 7 | TBPH | Theravance Biopharma, Inc. | Stock-Other | 2.05% | +2.05% | NEW | |
| 8 | MSTR 0 03-01-30 | Strategy INC | Stock-Tech | 1.79% | +1.79% | NEW | |
| 9 | UGI 5 06-01-28 | Ugi CORP | Stock-Utilities | 1.68% | +1.68% | NEW | |
| 10 | HO1 | Hologic INC | Stock-Other | 1.57% | +1.57% | NEW | |
| 11 | IBIT | Ishares Bitcoin Trust ETF | ETF-Crypto | 1.48% | +1.48% | NEW | |
| 12 | BMNR | Bitmine Immersion Technologi | Stock-Financials | 1.45% | +1.45% | NEW | |
| 13 | CEF | Sprott Physical Gold And Sil | Stock-Other | 1.40% | +1.40% | NEW | |
| 14 | MSTR 0.625 03-15-30 | Strategy INC | Stock-Tech | 1.37% | +1.37% | NEW | |
| 15 | SMCI 3.5 03-01-29 | Super Micro Computer INC | Stock-Tech | 1.35% | +1.35% | NEW | |
| 16 | GBX 2.875 04-15-28 | Greenbrier Cos INC | Stock-Other | 1.18% | +1.18% | NEW | |
| 17 | MUX 5.25 08-15-30 | Mcewen INC | Stock-Other | 1.12% | +1.12% | NEW | |
| 18 | ALB 7.25 03-01-27 | Albemarle CORP | Stock-Materials | 1.00% | +1.00% | NEW | |
| 19 | AM6 | Amicus Therapeutics INC | Stock-Other | 0.95% | +0.95% | NEW | |
| 20 | MSTR 2.25 06-15-32 | Strategy INC | Stock-Tech | 0.91% | +0.91% | NEW | |
| 21 | WB 1.375 12-01-30 | Weibo CORP | Stock-Other | 0.86% | +0.86% | NEW | |
| 22 | TSLA | Tesla INC | Stock-Consumer Disc | 0.81% | +0.81% | NEW | |
| 23 | PPL 7 02-15-29 | Ppl Corporation | Stock-Utilities | 0.80% | +0.80% | NEW | |
| 24 | EPR 5.75 PERP C | Epr Properties | Stock-Real Estate | 0.80% | +0.80% | NEW | |
| 25 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.73% | +0.73% | NEW | |
| 26 | SMCI | Super Micro Computer INC | Stock-Tech | 0.73% | +0.73% | NEW | |
| 27 | LMT | Lockheed Martin CORP | Stock-Industrials | 0.63% | +0.63% | NEW | |
| 28 | OVV | Ovintiv INC | Stock-Energy | 0.60% | +0.60% | NEW | |
| 29 | AIV | Apartment Invt & Mgmt Co -a | Stock-Other | 0.56% | +0.56% | NEW | |
| 30 | KMB | Kimberly-clark CORP | Stock-Consumer Staples | 0.56% | +0.56% | NEW | |
| 31 | ETSY 0.125 09-01-27 | Etsy INC | Stock-Consumer Disc | 0.55% | +0.55% | NEW | |
| 32 | MU | Micron Technology INC | Stock-Tech | 0.54% | +0.54% | NEW | |
| 33 | MLTX | Moonlake Immunotherapeutics | Stock-Other | 0.54% | +0.54% | NEW | |
| 34 | FRPT 3 04-01-28 | Freshpet INC | Stock-Consumer Staples | 0.53% | +0.53% | NEW | |
| 35 | ENOV 3.875 10-15-28 | Enovis CORP | Stock-Other | 0.51% | +0.51% | NEW | |
| 36 | VG | Venture Global Inc-cl A | Stock-Energy | 0.48% | +0.48% | NEW | |
| 37 | SPG | Simon Property Group INC | Stock-Real Estate | 0.48% | +0.48% | NEW | |
| 38 | APLSUSD | Apellis Pharmaceuticals INC | Stock-Other | 0.48% | +0.48% | NEW | |
| 39 | KKR | Kkr & Co INC | Stock-Financials | 0.46% | +0.46% | NEW | |
| 40 | MMM | 3m Co | Stock-Industrials | 0.46% | +0.46% | NEW | |
| 41 | CLBT | Cellebrite DI Ltd. | Stock-Other | 0.44% | +0.44% | NEW | |
| 42 | VLO | Valero Energy CORP | Stock-Energy | 0.44% | +0.44% | NEW | |
| 43 | WHR 8.5 02-15-29 A | Whirlpool CORP | Stock-Consumer Disc | 0.44% | +0.44% | NEW | |
| 44 | MSTR 0.875 03-15-31 | Strategy INC | Stock-Tech | 0.43% | +0.43% | NEW | |
| 45 | ANET | Arista Networks INC | Stock-Tech | 0.43% | +0.43% | NEW | |
| 46 | RUN 4 03-01-30 | Sunrun INC | Stock-Tech | 0.43% | +0.43% | NEW | |
| 47 | COIN 0.25 04-01-30 | Coinbase Global INC | Stock-Financials | 0.42% | — | — | |
| 48 | CNC | Centene CORP | Stock-Healthcare | 0.41% | — | -11.93% | |
| 49 | ALMS | Alumis INC | Stock-Other | 0.41% | — | — | |
| 50 | HPE | Hewlett Packard Enterprise | Stock-Tech | 0.40% | — | — |
Performance for Q3 2026
-4%
Performance Last 4 Quarters
-9.5%
Based on 57% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 488 | $5.9B | 100 | |
| 2025-12-31 | 561 | $7.1B | 0 | |
| 2025-09-30 | 593 | $8.3B | 0 | |
| 2025-06-30 | 409 | $8.7B | 0 | |
| 2025-03-31 | 304 | $5.0B | 100 | |
| 2024-12-31 | 601 | $4.9B | 0 | |
| 2024-09-30 | 577 | $4.3B | 0 | |
| 2024-06-30 | 272 | $2.6B | 0 | |
| 2024-03-31 | 308 | $2.9B | 0 | |
| 2023-12-31 | 374 | $2.1B | 0 | |
| 2023-09-30 | 185 | $1.7B | 0 | |
| 2023-06-30 | 2 | $1.6B | 0 | 1TSVT*2G87077 |
| 2023-03-31 | 2 | $322.3M | 0 | 1TXG2G87077 |
| 2022-12-31 | 2 | $14.5B | 0 | 1ONEM 3 06-15-252G87077 |
| 2022-09-30 | 2 | $7.1B | 0 | 1TXG2G87077 |
| 2022-06-30 | 2 | $7.0B | 0 | 1TXG2G87077 |
| 2022-03-31 | 2 | $7.0B | 0 | 1TXG2G87077 |
| 2021-12-31 | 685 | $4.7B | 0 | |
| 2021-09-30 | 511 | $4.0B | 0 | |
| 2021-06-30 | 495 | $4.0B | 96 | |
| 2021-03-31 | 535 | $3.7B | 100 | |
| 2020-12-31 | 329 | $2.3B | 100 | |
| 2020-09-30 | 249 | $2.5B | 100 | |
| 2020-06-30 | 194 | $1.4B | 100 | |
| 2020-03-31 | 194 | $628.7M | 100 | |
| 2019-12-31 | 317 | $1.5B | 81 | |
| 2019-09-30 | 377 | $1.2B | 94 | |
| 2019-06-30 | 353 | $1.6B | 100 | |
| 2019-03-31 | 303 | $1.3B | 100 | |
| 2018-12-31 | 454 | $1.4B | 100 | |
| 2018-09-30 | 197 | $1.3B | 100 | |
| 2018-06-30 | 201 | $1.0B | 100 | |
| 2018-03-31 | 228 | $1.2B | 100 | |
| 2017-12-31 | 260 | $1.1B | 100 | |
| 2017-09-30 | 110 | $901.5M | 97 | |
| 2017-06-30 | 99 | $970.5M | 100 | |
| 2017-03-31 | 73 | $772.1M | 100 | |
| 2016-12-31 | 215 | $667.5M | 100 | |
| 2016-09-30 | 158 | $536.6M | 100 | |
| 2016-06-30 | 78 | $581.4M | 100 | |
| 2016-03-31 | 69 | $402.5M | 100 | |
| 2015-12-31 | 238 | $394.6M | 100 | |
| 2015-09-30 | 43 | $135.3M | 85 | |
| 2015-06-30 | 37 | $83.2M | 100 | |
| 2015-03-31 | 41 | $118.5M | 100 | |
| 2014-12-31 | 69 | $246.4M | 100 | |
| 2014-09-30 | 39 | $99.3M | 0 | |
| 2014-06-30 | 36 | $145.3M | 0 | |
| 2014-03-31 | 35 | $241.5M | 100 | |
| 2013-12-31 | 116 | $274.3M | 100 | |
| 2013-09-30 | 28 | $165.4M | 100 | |
| 2013-06-30 | 36 | $292.4M | 0 |
Weiss Asset Management LP's most significant position changes for 2026-03-31: New buy: Nvidia CORP (NVDA); New buy: Strategy INC (MSTR); New buy: Sprott Physical Silver Trust (PSLV); New buy: Strategy INC (MSTR 0.625 09-15-28); Sold out: Avidity Biosciences INC (RNAGBP).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | NVDA | Nvidia CORP | — | NEW | New buy |
| 2 | MSTR | Strategy INC | — | NEW | New buy |
| 3 | PSLV | Sprott Physical Silver Trust | — | NEW | New buy |
| 4 | MSTR 0.625 09-15-28 | Strategy INC | — | NEW | New buy |
| 5 | RNAGBP | Avidity Biosciences INC | — | EXIT | Sold out |
| 6 | SMCI 2.25 07-15-28 | Super Micro Computer INC | — | NEW | New buy |
| 7 | NEE 7.375 02-15-29 | Nextera Energy INC | — | NEW | New buy |
| 8 | TBPH | Theravance Biopharma, Inc. | — | NEW | New buy |
| 9 | MSTR 0 03-01-30 | Strategy INC | — | NEW | New buy |
| 10 | ✓ | Cyberark Software LTD | — | EXIT | Sold out |
| 11 | UGI 5 06-01-28 | Ugi CORP | — | NEW | New buy |
| 12 | HO1 | Hologic INC | — | NEW | New buy |
| 13 | IBIT | Ishares Bitcoin Trust ETF | — | NEW | New buy |
| 14 | EXK | Exact Sciences CORP | — | EXIT | Sold out |
| 15 | BMNR | Bitmine Immersion Technologi | — | NEW | New buy |
| 16 | KVUE | Kenvue INC | — | EXIT | Sold out |
| 17 | CEF | Sprott Physical Gold And Sil | — | NEW | New buy |
| 18 | MSTR 0.625 03-15-30 | Strategy INC | — | NEW | New buy |
| 19 | SMCI 3.5 03-01-29 | Super Micro Computer INC | — | NEW | New buy |
| 20 | GBX 2.875 04-15-28 | Greenbrier Cos INC | — | NEW | New buy |
| 21 | MUX 5.25 08-15-30 | Mcewen INC | — | NEW | New buy |
| 22 | ALB 7.25 03-01-27 | Albemarle CORP | — | NEW | New buy |
| 23 | AM6 | Amicus Therapeutics INC | — | NEW | New buy |
| 24 | MSTR 2.25 06-15-32 | Strategy INC | — | NEW | New buy |
| 25 | WB 1.375 12-01-30 | Weibo CORP | — | NEW | New buy |
| 26 | TSLA | Tesla INC | — | NEW | New buy |
| 27 | PPL 7 02-15-29 | Ppl Corporation | — | NEW | New buy |
| 28 | EPR 5.75 PERP C | Epr Properties | — | NEW | New buy |
| 29 | SPY | Ss Spdr S&p 500 ETF Trust-us | — | NEW | New buy |
| 30 | SMCI | Super Micro Computer INC | — | NEW | New buy |
| 31 | LMT | Lockheed Martin CORP | — | NEW | New buy |
| 32 | OVV | Ovintiv INC | — | NEW | New buy |
| 33 | AIV | Apartment Invt & Mgmt Co -a | — | NEW | New buy |
| 34 | KMB | Kimberly-clark CORP | — | NEW | New buy |
| 35 | ETSY 0.125 09-01-27 | Etsy INC | — | NEW | New buy |
| 36 | MU | Micron Technology INC | — | NEW | New buy |
| 37 | MLTX | Moonlake Immunotherapeutics | — | NEW | New buy |
| 38 | FRPT 3 04-01-28 | Freshpet INC | — | NEW | New buy |
| 39 | ENOV 3.875 10-15-28 | Enovis CORP | — | NEW | New buy |
| 40 | VG | Venture Global Inc-cl A | — | NEW | New buy |
| 41 | SPG | Simon Property Group INC | — | NEW | New buy |
| 42 | APLSUSD | Apellis Pharmaceuticals INC | — | NEW | New buy |
| 43 | KKR | Kkr & Co INC | — | NEW | New buy |
| 44 | MMM | 3m Co | — | NEW | New buy |
| 45 | CLBT | Cellebrite DI Ltd. | — | NEW | New buy |
| 46 | VLO | Valero Energy CORP | — | NEW | New buy |
| 47 | WHR 8.5 02-15-29 A | Whirlpool CORP | — | NEW | New buy |
| 48 | MSTR 0.875 03-15-31 | Strategy INC | — | NEW | New buy |
| 49 | ANET | Arista Networks INC | — | NEW | New buy |
| 50 | RUN 4 03-01-30 | Sunrun INC | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-05-15 | Amendment | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2026-05-15 | Amendment | View on EDGAR |
| 2025-09-30 | 2026-02-17 | Amendment | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2026-02-17 | Amendment | View on EDGAR |
| 2025-06-30 | 2025-11-14 | Amendment | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-08-14 | Amendment | View on EDGAR |
| 2025-03-31 | 2025-05-15 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-05-15 | Amendment | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2025-05-15 | Amendment | View on EDGAR |
| 2024-09-30 | 2025-02-04 | Amendment | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-14 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-13 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-12 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-14 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-11-16 | Amendment | View on EDGAR |
| 2023-06-30 | 2023-08-11 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-11-16 | Amendment | View on EDGAR |
| 2023-03-31 | 2023-05-10 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-11-16 | Amendment | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2023-11-16 | Amendment | View on EDGAR |
| 2022-09-30 | 2022-12-05 | Amendment | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | Amendment | View on EDGAR |
| 2022-06-30 | 2023-11-16 | Amendment | View on EDGAR |
| 2022-06-30 | 2022-08-15 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2023-11-16 | Amendment | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2023-11-16 | Amendment | View on EDGAR |
| 2021-12-31 | 2022-02-14 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2023-11-16 | Amendment | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2023-11-16 | Amendment | View on EDGAR |
| 2021-06-30 | 2021-08-13 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-14 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-12 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-13 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-14 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-14 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-14 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-14 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-17 | Amendment | View on EDGAR |
| 2019-03-31 | 2019-05-15 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-14 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-13 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-13 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-15 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-14 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-11 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-12 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-14 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-12 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-13 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-12 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-13 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-14 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-14 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-04-17 | Amendment | View on EDGAR |
| 2014-12-31 | 2015-02-13 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2015-04-17 | Amendment | View on EDGAR |
| 2014-09-30 | 2014-11-14 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2015-04-17 | Amendment | View on EDGAR |
| 2014-06-30 | 2014-08-14 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-14 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-12 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-14 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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