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O'Connor Alternative Investments LLC — 13F Holdings & Portfolio

CIK 2081629 · latest 13F-HR filed 2026-05-15

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O'Connor Alternative Investments LLC manages $1.17B in 13F-reported U.S. long-equity assets across 128 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are HOLX (20.19%), AL (15.91%), FOLD (10.46%).

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM

$1.17B

Long-equity book

Holdings

128

Distinct positions

Period

2026-03-31

Filed 2026-05-15

Q/Q Activity

—

no prior filing cached

Firm Profile & Key People
Name Title / Status Ownership Type

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All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 HOLOGIC IN HOLX 436440101 $235.7M 20.19% 3,118,178 SH
2 AIR LEASE AL 00912X302 $185.7M 15.91% 2,860,079 SH
3 AMICUS THE FOLD 03152W109 $122.1M 10.46% 8,444,992 SH
4 SEALED AIR SEE 81211K100 $93.1M 7.98% 2,214,582 SH
5 ONESTREAM OS 68278B107 $76.5M 6.55% 3,186,804 SH
6 DAY ONE BI DAWN 23954D109 $40.0M 3.43% 1,867,553 SH
7 SNOWFLAKE SNOW 833445AD1 $30.8M 2.64% 25,000,000 PRN
8 DUKE ENERG DUKRD 26441CBY0 $27.7M 2.37% 25,000,000 PRN
9 CARNIVAL P CUK 14365C103 $25.3M 2.17% 982,643 SH
10 CLOUDFLARE NET 18915MAC1 $25.2M 2.16% 21,500,000 PRN
11 LIVE NATIO LYV 538034BA6 $22.9M 1.96% 15,000,000 PRN
12 ON SEMICON ON 682189AU9 $19.7M 1.69% 20,000,000 PRN
13 AKAMAI TEC AKAM 00971TAN1 $17.2M 1.47% 15,000,000 PRN
14 KLARNA GRO KLAR G5279N105 $14.8M 1.26% 1,127,170 SH
15 ALPHABET I GOOG 02079K107 $14.4M 1.24% 50,250 SH
16 VANECK ETF SMH 92189F676 $10.5M 0.90% 27,500 SH
17 ATRIUM THE RNA 04965N104 $7.7M 0.66% 578,011 SH
18 FOX CORP FOX 35137L204 $7.3M 0.63% 137,780 SH
19 JENA ACQUI JENA G5093B105 $7.2M 0.61% 700,000 SH
20 EGH ACQUIS EGHA G2946P100 $5.1M 0.44% 500,000 SH
21 KENSINGTON KCAC.U G5235S123 $5.0M 0.43% 500,000 SH
22 ONEIM ACQU OIM G6S74K106 $5.0M 0.43% 500,000 SH
23 GORES HLDG GTEN G4002F109 $4.9M 0.42% 474,941 SH
24 CANTOR EQU CEPV G1828S109 $4.5M 0.39% 450,000 SH
25 ZILLOW GRO Z 98954M200 $4.5M 0.38% 107,930 SH
26 AGRICULTUR ANSC G0131Y100 $4.3M 0.37% 384,160 SH
27 TRAILBLAZE BLZR G9009S103 $4.0M 0.34% 400,000 SH
28 TRG LATIN TRGSU G9037S125 $3.5M 0.30% 350,000 SH
29 LIVE OAK A LOKV G5509P102 $3.4M 0.29% 324,923 SH
30 NEWHOLD IN NHIC G6486E102 $3.4M 0.29% 324,604 SH
31 WESTERN DI WDC 958102105 $3.2M 0.28% 12,000 SH
32 OAKTREE AC OACC G6717R104 $3.2M 0.27% 300,000 SH
33 ARMADA ACQ XRPNU G0R38G120 $3.0M 0.26% 300,000 SH
34 CLEARWAY E CWEN.A 18539C105 $2.9M 0.25% 75,000 SH
35 NORWEGIAN NCLH G66721104 $2.7M 0.23% 145,200 SH
36 GP-ACT III GPAT G4035N103 $2.7M 0.23% 250,000 SH
37 ACCEL ENTE ACEL 00436Q106 $2.7M 0.23% 246,728 SH
38 STELLAR V SVCC G8475V103 $2.6M 0.22% 250,000 SH
39 DUNE ACQUI IPOD G2867S109 $2.6M 0.22% 250,000 SH
40 BLUE WTR A BLUW G1368E106 $2.6M 0.22% 250,000 SH
41 NEW PROVID NPAC G6476A102 $2.6M 0.22% 250,000 SH
42 CARTESIAN CGCT G19307100 $2.6M 0.22% 250,000 SH
43 THAYER VEN TVAI G87890102 $2.6M 0.22% 250,000 SH
44 TALON CAP TLNC G86652107 $2.5M 0.22% 250,000 SH
45 SOLARIUS C SOCA G82617104 $2.5M 0.22% 250,000 SH
46 PIONEER AC PACH G7117W107 $2.5M 0.22% 250,000 SH
47 OXLEY BRID OBA G6858G107 $2.5M 0.22% 250,000 SH
48 M3-BRIGADE MBVI G63221108 $2.5M 0.22% 250,000 SH
49 HIGHVIEW M HVMC G4569C101 $2.5M 0.22% 250,000 SH
50 CSLM DIGIT KOYN G2584S101 $2.5M 0.22% 250,000 SH