Weiss Asset Management LP
13F filer · CIK 1357550 · Boston, MA
Summary
Weiss Asset Management LP reported $9.54B across 624 positions in its 13F for 2026 Q2, filed Aug 14, 2026. The largest holdings are NVDA (11.0%), MU (9.0%), SMCI 7 06.01.29 (2.6%). Versus 2026 Q1, leaving options aside, it opened 422 new positions, added to 73, trimmed 81 and sold out of 282.
Reported value$9.54B
Positions624incl. options
Report period2026 Q2
FiledAug 14, 2026
New positions422
Added73
Trimmed81
Sold out282
Top 25 holdings
By reported value, options listed separately · change vs 2026 Q1
Weight 11.0%Value $1.05BPrice $227.21Shares 5.26M -5.70%Since Jun 30 +13.55%
Weight 9.0%Value $858.53MPrice $1065Shares 744K +682.88%Since Jun 30 -7.73%
Weight 2.6%Value $249.11MShares 4.85M
SUPER MICRO COMPUTER INCNo ticker matchAdd
Weight 2.6%Value $245.59MPrincipal $249.86M +68.40%
SUPER MICRO COMPUTER INCNo ticker matchAdd
Weight 2.2%Value $211.96MPrincipal $230.96M +133.10%
Weight 2.0%Value $191.58MPrice $352.84Shares 455K +251.71%Since Jun 30 -16.11%
Weight 2.0%Value $188.32MShares 2.77M
STRATEGY INCNo ticker matchAdd
Weight 1.9%Value $181.86MPrincipal $177.86M +154.48%
Weight 1.4%Value $129.38MShares 2.70M +5.89%
Weight 1.3%Value $126.77MPrice $17.03Shares 7.46MSince Jun 30 +0.18%
Weight 1.3%Value $124.70MPrice $41.90Shares 3.10M +78.20%Since Jun 30 +4.15%
STRATEGY INCNo ticker matchAdd
Weight 1.2%Value $117.37MPrincipal $121.25M +131.42%
Weight 1.2%Value $111.09MPrincipal $125.43M
Weight 1.1%Value $109.37MPrice $116.22Shares 1.09M +274.82%Since Jun 30 +15.90%
Weight 1.1%Value $107.30MPrice $21.31Shares 5.10MSince Jun 30 +1.24%
Weight 1.1%Value $105.86MShares 1.91M +132.93%
STRATEGY INCNo ticker matchTrim
Weight 1.1%Value $102.81MPrincipal $100.17M -35.30%
STRATEGY INCNo ticker matchAdd
Weight 1.0%Value $98.72MPrincipal $106.88M +305.44%
Weight 0.9%Value $89.98MPrice $36.50Shares 2.54MSince Jun 30 +3.14%
Weight 0.9%Value $87.42MShares 750K
Weight 0.9%Value $86.43MPrincipal $97.27M -19.63%
Weight 0.9%Value $85.98MPrice $149.24Shares 503KSince Jun 30 -12.65%
Weight 0.9%Value $85.26MPrice $263.27Shares 286KSince Jun 30 -11.62%
Weight 0.8%Value $80.72MPrincipal $60.24M -15.02%
Weight 0.8%Value $79.77MPrice $354.53Shares 225KSince Jun 30 -0.00%
| Stock | Weight | Value | Since Jun 30 | Shares change | Action |
|---|---|---|---|---|---|
| 11.0% | $1.05B | +13.55% | -5.70% | Trim | |
| 9.0% | $858.53M | -7.73% | +682.88% | Add | |
| 2.6% | $249.11M | — | — | New | |
| SUPER MICRO COMPUTER INCNo ticker match | 2.6% | $245.59M | — | +68.40% | Add |
| SUPER MICRO COMPUTER INCNo ticker match | 2.2% | $211.96M | — | +133.10% | Add |
| 2.0% | $191.58M | -16.11% | +251.71% | Add | |
| 2.0% | $188.32M | — | — | New | |
| STRATEGY INCNo ticker match | 1.9% | $181.86M | — | +154.48% | Add |
| 1.4% | $129.38M | — | +5.89% | Add | |
| 1.3% | $126.77M | +0.18% | — | Hold | |
| 1.3% | $124.70M | +4.15% | +78.20% | Add | |
| STRATEGY INCNo ticker match | 1.2% | $117.37M | — | +131.42% | Add |
| 1.2% | $111.09M | — | — | New | |
| 1.1% | $109.37M | +15.90% | +274.82% | Add | |
| 1.1% | $107.30M | +1.24% | — | New | |
| 1.1% | $105.86M | — | +132.93% | Add | |
| STRATEGY INCNo ticker match | 1.1% | $102.81M | — | -35.30% | Trim |
| STRATEGY INCNo ticker match | 1.0% | $98.72M | — | +305.44% | Add |
| 0.9% | $89.98M | +3.14% | — | New | |
| 0.9% | $87.42M | — | — | New | |
| 0.9% | $86.43M | — | -19.63% | Trim | |
| 0.9% | $85.98M | -12.65% | — | New | |
| 0.9% | $85.26M | -11.62% | — | New | |
| 0.8% | $80.72M | — | -15.02% | Trim | |
| 0.8% | $79.77M | -0.00% | — | New |
Weight is the share of the reported 13F value, including options at notional value. “Since Jun 30” compares the latest close with the quarter-end price implied by the filing (value ÷ shares).
Largest buys in 2026 Q2
SUPER MICRO COMPUTER INCNo ticker match≈ $121.03MAdd
Largest sells in 2026 Q2
STRATEGY INCNo ticker match≈ $60.17MTrim
Options
Notional value, listed apart from stocks · top 10 of 11
Source: SEC Form 13F, values as reported by the filer. Filings lag up to 45 days after quarter end and cover only certain long positions. Research only, not investment advice.