Weiss Asset Management LP
CIK 1357550 · Holdings on Jun 30, 2026 · First reported Aug 14, 2026
Top ten holdings
Q2 2026- NVDA11.80%
- MU9.62%
- 86800U5002.79%
- 86800UAD62.75%
- 86800UAB02.37%
- TSLA2.15%
- BA2.11%
- 594972AJ02.04%
- NEE1.45%
- TBPH1.42%
Share classes counted separately38.50%
Portfolio value by quarter
What changed this quarter?
Within preview · weight change- MUWeight increased · +9.03 pp0.59% → 9.62%Shares +648.76K (+682.88%)
- NVDAWeight decreased · -6.04 pp17.84% → 11.80%Shares -318.08K (-5.70%)
- 594972AQ4Weight decreased · -1.97 pp3.12% → 1.15%Shares -54.66M (-35.30%)
Weight = security value ÷ total reported holdings value. Changes are in percentage points; price moves also affect weights, so they are not trade sizes.
Top 10 holdings 25
USD · B = billion · M = million; expand a row for exact values| # | Security | Value | Weight | Quantity | Weight / quantity change | Activity | |
|---|---|---|---|---|---|---|---|
| 01 | NVDANVIDIA CORP View history and evidence | $1.05B | 11.80% | 5.26M shares | 17.84% → 11.80%-6.04 pp -318.08K (-5.70%) | Reduced | ▾ |
| 02 | MUMICRON TECHNOLOGY INC View history and evidence | $858.53M | 9.62% | 743.77K shares | 0.59% → 9.62%+9.03 pp +648.76K (+682.88%) | Added | ▾ |
| 03 | 86800U500SUPER MICRO COMPUTER INC7 DEP CM SR A WI View history and evidence | $249.11M | 2.79% | 4.85M shares | Prior unavailable +4.85M | New | ▾ |
| 04 | 86800UAD6SUPER MICRO COMPUTER INCNOTE 2.250% 7/1 View history and evidence | $245.59M | 2.75% | 249.86M principal (USD) | 2.37% → 2.75%+0.38 pp +101.49M (+68.40%) | Added | ▾ |
| 05 | 86800UAB0SUPER MICRO COMPUTER INCNOTE 3.500% 3/0 View history and evidence | $211.96M | 2.37% | 230.96M principal (USD) | 1.46% → 2.37%+0.91 pp +131.88M (+133.10%) | Added | ▾ |
| 06 | TSLATESLA INC View history and evidence | $191.58M | 2.15% | 455.49K shares | 0.88% → 2.15%+1.27 pp +325.98K (+251.71%) | Added | ▾ |
| 07 | BABOEING CO/THEDEP CONV PFD A View history and evidence | $188.32M | 2.11% | 2.77M shares | Prior unavailable +2.77M | New | ▾ |
| 08 | 594972AJ0STRATEGY INCNOTE 0.625% 3/1 View history and evidence | $181.86M | 2.04% | 177.86M principal (USD) | 1.48% → 2.04%+0.56 pp +107.97M (+154.48%) | Added | ▾ |
| 09 | NEENEXTERA ENERGY INCUNIT 02/15/2029 View history and evidence | $129.38M | 1.45% | 2.70M shares | 2.35% → 1.45%-0.90 pp +150.00K (+5.89%) | Added | ▾ |
| 10 | TBPHTHERAVANCE BIOPHARMA INC View history and evidence | $126.77M | 1.42% | 7.46M shares | 2.22% → 1.42%-0.80 pp 0 (0.00%) | Unchanged | ▾ |
Options overlay 11
$617.11M notionalPut and Call positions are separate. Notional is based on underlying securities, not option premium, market value or net exposure. Quantities are underlying shares.
| Security | Put / Call | Underlying shares | Notional | Quantity change | |
|---|---|---|---|---|---|
SMCISUPER MICRO COMPUTER INCCOM NEW View history and evidence | Put | 7.05M | $206.67M | +6.55M (+1309.28%) | ▾ |
NVDANVIDIA CORP View history and evidence | Put | 1.00M | $200.09M | -90.00K (-8.26%) | ▾ |
MUMICRON TECHNOLOGY INC View history and evidence | Put | 105.00K | $121.20M | +105.00K | ▾ |
3 / 11 options · preview only
Exited positions 287
| Security | Type | Shares out | Value out | Previous filing | This filing |
|---|---|---|---|---|---|
| 436440101 HOLOGIC INC | Non-derivative | -1,230,436 | -$93.01M | SEC filing ↗ | SEC filing ↗ |
| 03152W109 AMICUS THERAPEUTICS INC | Non-derivative | -3,872,902 | -$56.00M | SEC filing ↗ | SEC filing ↗ |
| 948596AJ0 WEIBO CORP | Non-derivative | -48,143,000 | -$50.78M | SEC filing ↗ | SEC filing ↗ |
3 / 287 preview exits. Up to 30 exit records are previewed. Exit means absent from the current filing; execution date, price and proceeds are unknown.
Every number has a source.
CIK 1357550 · Period 2026-06-30
Data loaded 2026-09-23 · First reported 2026-08-14
Amendments and versions
{
"amendments_merged": null,
"prior_versions": null,
"cover_table_value": 9541753171
}Research all 624 reported holdings.
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