O'Connor Alternative Investments, LLC reported 102 positions worth $263.30M for the quarter ended Jun 30, 2026, up 40.4% on the prior quarter. It opened 32 new positions, added to 5, trimmed 4 and exited 9. Its largest holding is Alphabet Inc. at 10.7% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| GOOG Alphabet Inc. | +29.8K | +59.2% | $10.52M | 10.74% |
| NWSA News Corp | +348.0K | – | $8.64M | 3.28% |
| Z Zillow Group, Inc. | +222.7K | +206.3% | $7.02M | 3.96% |
| HEI-A Heico Corp | +23.6K | – | $6.09M | 2.31% |
| IREN IREN Ltd | +111.3K | – | $5.09M | 1.93% |
| RIVN Rivian Automotive, Inc. / DE | +279.0K | – | $4.84M | 1.84% |
| AEIS Advanced Energy Industries Inc | +11.9K | – | $4.42M | 1.68% |
| RBRK Rubrik, Inc. | +43.6K | – | $3.50M | 1.33% |
| NRG Nrg Energy, Inc. | +22.0K | – | $3.21M | 1.22% |
| KEYY Keystone Acquisition Corp. | +250.0K | – | $2.47M | 0.936% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| RNA Atrium Therapeutics, Inc. | -578.0K | -100.0% | $7.73M | Exited |
| TMS Teamshares Inc | -324.9K | -100.0% | $3.38M | Exited |
| WDC Western Digital Corp | -12.0K | -100.0% | $3.25M | Exited |
| GPAT GP-Act III Acquisition Corp. | -250.0K | -100.0% | $2.71M | Exited |
| ORCL Oracle Corp | -16.4K | -100.0% | $2.42M | Exited |
| ALF Centurion Acquisition Corp. | -150.0K | -100.0% | $1.62M | Exited |
| WLIIU Willow Lane Acquisition Corp. II | -100.0K | -100.0% | $1.01M | Exited |
| TMTSU Spartacus Acquisition Corp. II | -100.0K | -100.0% | $1.00M | Exited |
| IRHOU Iron Horse Acquisition II Corp. | -100.0K | -100.0% | $996.00K | Exited |
| BACC Blue Acquisition Corp/Cayman | -50.0K | -25.0% | $530.00K | 0.604% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| NWSA News Corp | +348.0K | $8.64M | 3.28% |
| HEI-A Heico Corp | +23.6K | $6.09M | 2.31% |
| IREN IREN Ltd | +111.3K | $5.09M | 1.93% |
| RIVN Rivian Automotive, Inc. / DE | +279.0K | $4.84M | 1.84% |
| AEIS Advanced Energy Industries Inc | +11.9K | $4.42M | 1.68% |
| RBRK Rubrik, Inc. | +43.6K | $3.50M | 1.33% |
| NRG Nrg Energy, Inc. | +22.0K | $3.21M | 1.22% |
| KEYY Keystone Acquisition Corp. | +250.0K | $2.47M | 0.936% |
| LWAC LightWave Acquisition Corp. | +200.0K | $2.05M | 0.779% |
| BIDWU Tribeca Strategic Acquisition Corp. | +200.0K | $1.99M | 0.756% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| RNA Atrium Therapeutics, Inc. | -578.0K | $7.73M | 4.12% |
| TMS Teamshares Inc | -324.9K | $3.38M | 1.8% |
| WDC Western Digital Corp | -12.0K | $3.25M | 1.73% |
| GPAT GP-Act III Acquisition Corp. | -250.0K | $2.71M | 1.45% |
| ORCL Oracle Corp | -16.4K | $2.42M | 1.29% |
| ALF Centurion Acquisition Corp. | -150.0K | $1.62M | 0.862% |
| WLIIU Willow Lane Acquisition Corp. II | -100.0K | $1.01M | 0.539% |
| TMTSU Spartacus Acquisition Corp. II | -100.0K | $1.00M | 0.535% |
| IRHOU Iron Horse Acquisition II Corp. | -100.0K | $996.00K | 0.531% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | GOOG Alphabet Inc. | Technology | 80.0K | $28.27M | 10.74% | +29.8K | +59.2% | Added | 0% |
| 2 | KLAR Klarna Group plc | Financial Services | 1.13M | $22.81M | 8.66% | 0 | 0.0% | Unchanged | 0.3% |
| 3 | Z Zillow Group, Inc. | Technology | 330.6K | $10.42M | 3.96% | +222.7K | +206.3% | Added | 0.15% |
| 4 | NWSA News Corp | Communication Services | 348.0K | $8.64M | 3.28% | +348.0K | – | New | 0.06% |
| 5 | JENA JENA ACQUISITION Corp II | Financial Services | 700.0K | $7.25M | 2.75% | 0 | 0.0% | Unchanged | 2.42% |
| 6 | FOX Fox Corp | Communication Services | 150.9K | $7.07M | 2.68% | +13.1K | +9.5% | Added | 0.04% |
| 7 | HEI-A Heico Corp | Industrials | 23.6K | $6.09M | 2.31% | +23.6K | – | New | 0.03% |
| 8 | EGHA EGH Acquisition Corp. | Financial Services | 500.0K | $5.15M | 1.96% | 0 | 0.0% | Unchanged | 2.44% |
| 9 | IREN IREN Ltd | Technology | 111.3K | $5.09M | 1.93% | +111.3K | – | New | 0.03% |
| 10 | OIM OneIM Acquisition Corp. | Financial Services | 500.0K | $5.04M | 1.91% | 0 | 0.0% | Unchanged | 1.73% |
| 11 | GTEN Gores Holdings X, Inc. / CI | Financial Services | 474.8K | $4.95M | 1.88% | -145 | 0.0% | Reduced | 1.05% |
| 12 | RIVN Rivian Automotive, Inc. / DE | Consumer Discretionary | 279.0K | $4.84M | 1.84% | +279.0K | – | New | 0.02% |
| 13 | CEPV Cantor Equity Partners V, Inc. | Financial Services | 450.0K | $4.64M | 1.76% | 0 | 0.0% | Unchanged | 1.39% |
| 14 | AEIS Advanced Energy Industries Inc | Industrials | 11.9K | $4.42M | 1.68% | +11.9K | – | New | 0.03% |
| 15 | LBTYK Liberty Global Ltd. | Communication Services | 401.6K | $4.42M | 1.68% | +215.5K | +115.8% | Added | 0.12% |
Tip. Select a row to see that position’s full history at O'Connor Alternative Investments.
As of its Q2 2026 13F filing, O'Connor Alternative Investments, LLC’s five largest positions were Alphabet Inc. (GOOG) at 10.7%, Klarna Group plc (KLAR) at 8.7%, Zillow Group, Inc. (Z) at 4.0%, News Corp (NWSA) at 3.3%, JENA ACQUISITION Corp II (JENA) at 2.8% of the reported portfolio.
O'Connor Alternative Investments, LLC reported a 13F portfolio worth $263.30M across 102 positions for Q2 2026. That is up 40.4% from the previous quarter.
Its largest purchases by value were Alphabet Inc. ($10.52M), News Corp ($8.64M), Zillow Group, Inc. ($7.02M). It opened 32 new positions.
Its largest sales by value were Atrium Therapeutics, Inc. ($7.73M), Teamshares Inc ($3.38M), Western Digital Corp ($3.25M). It exited 9 positions entirely.
From the Form 13F-HR reports O'Connor Alternative Investments, LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.