CIK: 0002081629
Total reported value
$1.2B
Reporting period: 2026-03-31 · Number of holdings: 128
O'Connor Alternative Investments LLC disclosed 128 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $1.2B and a quarterly turnover rate of 0.0%.
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O'Connor Alternative Investments LLC's disclosed holdings carry a Herfindahl concentration index of 0.093 — mathematically equivalent to about 11 equally-sized positions, well below its 128 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 3.31), 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.
Sector classification currently covers about 24% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
No holding changes this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | HO1 | Hologic INC | Stock-Other | 20.19% | — | — | — |
| 2 | AL | Air Lease CORP | Stock-Other | 15.91% | — | — | — |
| 3 | AM6 | Amicus Therapeutics INC | Stock-Other | 10.46% | — | — | — |
| 4 | SDA | Sealed Air CORP | Stock-Consumer Disc | 7.98% | — | — | — |
| 5 | K4F | Onestream INC | Stock-Other | 6.55% | — | — | — |
| 6 | DAWNGBX | Day One Biopharmaceuticals I | Stock-Other | 3.43% | — | — | — |
| 7 | SNOW 0 10-01-29 | Snowflake INC | Stock-Tech | 2.64% | — | — | — |
| 8 | DUK 4.125 04-15-26 | Duke Energy CORP | Stock-Utilities | 2.37% | — | — | — |
| 9 | POH3 | Carnival Plc-adr | Stock-Other | 2.17% | — | — | — |
| 10 | NET 0 08-15-26 | Cloudflare INC | Stock-Tech | 2.16% | — | — | — |
| 11 | LYV 3.125 01-15-29 | Live Nation Entertainmen | Stock-Comm Services | 1.96% | — | — | — |
| 12 | ON 0.5 03-01-29 | On Semiconductor CORP | Stock-Tech | 1.69% | — | — | — |
| 13 | AKAM 1.125 02-15-29 | Akamai Technologies INC | Stock-Tech | 1.47% | — | — | — |
| 14 | KLAR | Klarna Group plc | Stock-Other | 1.26% | — | — | — |
| 15 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.24% | — | — | — |
| 16 | SMH | Vaneck Semiconductor ETF | ETF-Other | 0.90% | — | — | — |
| 17 | RNA | Atrium Therapeutics INC | Stock-Other | 0.66% | — | — | — |
| 18 | FOX | Fox CORP - Class B | Stock-Comm Services | 0.63% | — | — | — |
| 19 | ✓ | Stock-Other | 0.61% | — | — | — | |
| 20 | ✓ | Stock-Other | 0.44% | — | — | — | |
| 21 | ✓ | Kensington Cap Acquist CORP | Stock-Other | 0.43% | — | — | — |
| 22 | ✓ | Oneim Acquisition CORP | Stock-Other | 0.43% | — | — | — |
| 23 | GTENU | Gores Holdings X, Inc. | Stock-Other | 0.42% | — | — | — |
| 24 | ✓ | Cantor Equity Partners V INC | Stock-Other | 0.39% | — | — | — |
| 25 | Z | Zillow Group INC - C | Stock-Comm Services | 0.38% | — | — | — |
| 26 | ANSCW | Agriculture & Natural Solutions Acquisition Corporation | Stock-Other | 0.37% | — | — | — |
| 27 | ✓ | Trailblazer Acquisition CORP | Stock-Other | 0.34% | — | — | — |
| 28 | ✓ | Trg Latin Amer Acquis CORP | Stock-Other | 0.30% | — | — | — |
| 29 | ✓ | Live Oak Acquisition CORP V | Stock-Other | 0.29% | — | — | — |
| 30 | ✓ | Stock-Other | 0.29% | — | — | — | |
| 31 | WDC | Western Digital CORP | Stock-Tech | 0.28% | — | — | — |
| 32 | ✓ | Oaktree Acquisition CORP Iii | Stock-Other | 0.27% | — | — | — |
| 33 | ✓ | Armada Acquisition CORP Ii | Stock-Other | 0.26% | — | — | — |
| 34 | NY4B | Clearway Energy Inc-a | Stock-Other | 0.25% | — | — | — |
| 35 | NCLH | Norwegian Cruise Line Holdings Ltd. | Stock-Consumer Disc | 0.23% | — | — | — |
| 36 | GPATU | GP-Act III Acquisition Corp. | Stock-Other | 0.23% | — | — | — |
| 37 | ACEL | Accel Entertainment INC | Stock-Other | 0.23% | — | — | — |
| 38 | ✓ | Stellar V Cap CORP | Stock-Other | 0.22% | — | — | — |
| 39 | ✓ | Stock-Other | 0.22% | — | — | — | |
| 40 | ✓ | Blue Wtr Acquisition CORP. I | Stock-Other | 0.22% | — | — | — |
| 41 | ✓ | New Providence Acquisition C | Stock-Other | 0.22% | — | — | — |
| 42 | ✓ | Cartesian Growth CORP Iii | Stock-Other | 0.22% | — | — | — |
| 43 | ✓ | Stock-Other | 0.22% | — | — | — | |
| 44 | ✓ | Talon Cap CORP | Stock-Other | 0.22% | — | — | — |
| 45 | ✓ | Solarius Capital Acqu CORP S | Stock-Other | 0.22% | — | — | — |
| 46 | ✓ | Stock-Other | 0.22% | — | — | — | |
| 47 | ✓ | Oxley Bridge Acq LTD | Stock-Other | 0.22% | — | — | — |
| 48 | ✓ | M3-brigade Acquisition Vi Co | Stock-Other | 0.22% | — | — | — |
| 49 | ✓ | Highview Merger CORP | Stock-Other | 0.22% | — | — | — |
| 50 | ✓ | Cslm Digita Asset Acq CORP I Usd Cl | Stock-Other | 0.22% | — | — | — |
Performance for Q3 2026
—
Performance Last 4 Quarters
—
Based on 0 months of available history
Based on 14% of reported portfolio value with available pricing
Not enough data yet to compute personality scores
Not enough sector-mapped data yet
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
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