O'Connor Alternative Investments LLC

13F filer, CIK 2081629, NEW YORK, NY

O'Connor Alternative Investments LLC reported $1,908,499,526 across 134 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-15. Its ten largest share positions make up 75.88% of the portfolio.

Filed 2026-05-15 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC13F-HR 0002081629-26-000003

Period: 2026-03-31
Reported value: $1.91B
Holdings: 134
Top 10 weight: 75.88%
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Holdings, Q1 2026

Share positions as resolved from 13F-HR 0002081629-26-000003, largest first. % of portfolio is the value over $1,907,316,645, the sum of the share positions whose value is usable for ratios (method).

Security	Shares	Value	% of portfolio	Latest event	Timeline
GTLSCHART INDS INC	2,018,343	$417M	21.88%		Timeline
HOLXHOLOGIC INC	3,118,178	$236M	12.36%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ALAIR LEASE CORP	2,860,079	$186M	9.74%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CWANCLEARWATER ANALYTICS HLDGS I	6,409,535	$152M	7.95%		Timeline
FOLDAMICUS THERAPEUTIC	8,444,992	$122M	6.4%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SEESEALED AIR CORP NEW	2,214,582	$93.1M	4.88%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
OSONESTREAM INC	3,186,804	$76.5M	4.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
MASIMASIMO CORP	412,903	$73.4M	3.85%		Timeline
ACLXARCELLX INC	450,504	$51.7M	2.71%		Timeline
DAWNDAY ONE BIOPHARMACEUTICALS I	1,867,553	$40M	2.1%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CTRACOTERRA ENERGY INC	1,002,337	$35.2M	1.85%		Timeline
CUKCARNIVAL PLC	982,643	$25.3M	1.33%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
KLARKLARNA GROUP PLC	1,127,170	$14.8M	0.77%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
GOOGALPHABET INC	50,250	$14.4M	0.76%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
APLSAPELLIS PHARMACEUTICALS INC	300,000	$12.1M	0.63%		Timeline
SMHVANECK ETF TRUST	27,500	$10.5M	0.55%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
RNAATRIUM THERAPEUTICS INC	578,011	$7.73M	0.41%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
FOXFOX CORP	137,780	$7.32M	0.38%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
JENAJENA ACQUISITION CORP II	700,000	$7.15M	0.38%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
EGHAEGH ACQUISITION CORP.	500,000	$5.11M	0.27%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
KCACUKENSINGTON CAP ACQUISITION	500,000	$5.02M	0.26%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
OIMONEIM ACQUISITION CORP	500,000	$4.98M	0.26%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
GTENGORES HLDGS X INC	474,941	$4.85M	0.25%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CEPVCANTOR EQUITY PARTNERS V INC	450,000	$4.54M	0.24%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ZZILLOW GROUP INC	107,930	$4.47M	0.23%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ANSCAGRICULTURE & NAT SOL ACQ CO	384,160	$4.33M	0.23%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BLZRTRAILBLAZER ACQUISITION CORP	400,000	$4.02M	0.21%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TRGSUTRG LATIN AMER ACQUIS CORP	350,000	$3.48M	0.18%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TMSLIVE OAK ACQUISITION CORP V	324,923	$3.38M	0.18%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
NHICNEWHOLD INVT CORP III	324,604	$3.37M	0.18%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
WDCWESTERN DIGITAL CORP	12,000	$3.25M	0.17%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
OACCOAKTREE ACQUISITION CORP III	300,000	$3.17M	0.17%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
XRPNUARMADA ACQUISITION CORP II	300,000	$3M	0.16%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CWENACLEARWAY ENERGY INC	75,000	$2.94M	0.15%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
NCLHNORWEGIAN CRUISE LINE HLDGS	145,200	$2.72M	0.14%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
GPATGP-ACT III ACQUISITION CORP	250,000	$2.71M	0.14%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ACELACCEL ENTERTAINMENT INC	246,728	$2.69M	0.14%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SVCCSTELLAR V CAP CORP	250,000	$2.62M	0.14%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CCAQCOLLECTIVE ACQUISITION CORP	250,000	$2.58M	0.14%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BLUWBLUE WTR ACQUISITION CORP. I	250,000	$2.57M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
NPACNEW PROVIDENCE ACQUISITION C	250,000	$2.56M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
FACCARTESIAN GROWTH CORP III	250,000	$2.56M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TVAITHAYER VENTURES ACQ CORP II	250,000	$2.56M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TLNCTALON CAP CORP	250,000	$2.55M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SOCASOLARIUS CAPITAL ACQU CORP	250,000	$2.54M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
PACHPIONEER ACQUISITION I CORP	250,000	$2.54M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
OBAOXLEY BRIDGE ACQ LTD	250,000	$2.53M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
MBVIM3-BRIGADE ACQUISITION VI CO	250,000	$2.51M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
HVMCHIGHVIEW MERGER CORP	250,000	$2.51M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
KOYNCSLM DIGITA ASSET ACQ CORP I	250,000	$2.51M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
QADRUQDRO ACQUISITION CORP	250,000	$2.48M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ORCLORACLE CORP	16,425	$2.42M	0.13%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
UAAUNDER ARMOUR INC	400,000	$2.36M	0.12%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BEAGBOLD EAGLE ACQUISITION CORP	219,217	$2.31M	0.12%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
RNGTRANGE CAP ACQUISITION CORP I	225,000	$2.25M	0.12%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
LBTYKLIBERTY GLOBAL LTD	186,100	$2.18M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ATIIARCHIMEDES TECH SPAC PARTNER	200,000	$2.09M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
GSHRGESHER ACQUISITION CORP. II	200,000	$2.07M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CCIICOHEN CIRCLE ACQUISIT CORP I	200,000	$2.04M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BACCBLUE ACQUISITION CORP.	200,000	$2.04M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CRAQCAL REDWOOD ACQUISITION CORP	200,000	$2.04M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
FVAVFORTRESS VALUE ACQU CORP V	200,000	$2M	0.11%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CEPFCANTOR EQUITY PARTNERS IV IN	174,570	$1.78M	0.09%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
AXINAXIOM INTELLIGENCE AC CORP 1	175,000	$1.77M	0.09%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
OTGAOTG ACQUISITION CORP. I	175,000	$1.76M	0.09%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
AACBARTIUS II ACQUISITION INC	160,000	$1.65M	0.09%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ALFCENTURION ACQUISITION CORP	150,000	$1.62M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
POLEANDRETTI ACQUISITION CORP II	150,000	$1.6M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
MLACMOUNTAIN LAKE ACQUISITION CO	149,912	$1.58M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
XRPNARMADA ACQUISITION CORP II	150,000	$1.55M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SOULSOULPOWER ACQUISITION CORP	150,000	$1.54M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
PAIIPYROPHYTE ACQUISITION CORP.	150,000	$1.52M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
EVACEQV VENTURES AC CORP. II	150,000	$1.51M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
FCRSFUTURECREST ACQUISITION CORP	150,000	$1.51M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
YCYAA MISSION ACQUISITION CORP	150,000	$1.51M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
NSTRVIKING ACQUISITION CORP I	150,000	$1.5M	0.08%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BCARD. BORAL ARC ACQ I CORP.	125,000	$1.26M	0.07%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CHECCHENGHE ACQUISITION III CO	125,000	$1.26M	0.07%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
LATAGALATA ACQUISITION CORP II	125,000	$1.25M	0.07%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SPEGSILVER PEGASUS ACQUISITION C	120,000	$1.22M	0.06%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
LEGTLEGATO MERGER CORP III	100,000	$1.1M	0.06%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
JACSJACKSON ACQUISITION CO II	100,000	$1.06M	0.06%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ALDFALDEL FINL II INC	100,000	$1.06M	0.06%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
DRDBROMAN DBDR ACQUISITION CORP	100,000	$1.05M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
RACRITHM ACQUISITION CORP	100,000	$1.04M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
NWAXUNEW AMER ACQUISITION I CORP	100,000	$1.04M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
COPLCOPLEY ACQUISITION CORP	100,000	$1.03M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
CAEPCANTOR EQUITY PARTNERS III I	100,000	$1.03M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SZZLSIZZLE ACQUISITION CORP. II	100,000	$1.03M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TACOBERTO ACQUISITION CORP	100,000	$1.02M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
OYSEOYSTER ENTERPRISES II ACQUIS	100,000	$1.02M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
IPCXINFLECTION PT ACQUISITION CO	100,000	$1.02M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
WENNWEN ACQUISITION CORP	100,000	$1.02M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
GFUZSPRING VY ACQUISITION CORP I	100,000	$1.02M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
ONCH1RT ACQUISITION CORP.	100,000	$1.01M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
FIGXFIGX CAP ACQUISITION CORP.	100,000	$1.01M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
WLIIUWILLOW LANE ACQUISITION CRP	100,000	$1.01M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
MKLYMCKINLEY ACQUISITION CORP	100,000	$1.01M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TMTSUSPARTACUS ACQUISITION CORP I	100,000	$1M	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
APXTAPEX TREAS CORP	100,000	$999K	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BDCIBTC DEV CORP	100,000	$999K	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
IRHOUIRON HORSE ACQUISIT II CORP	100,000	$996K	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BIXIBITCOIN INFRASTRUCTURE ACQUI	100,000	$990K	0.05%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
INACINDIGO ACQUISITION CORP	75,000	$760K	0.04%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SPKLFSPARK I ACQUISITION CORP	66,832	$756K	0.04%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
AEXAAMERICAN EXCEPTIONALISM ACQU	50,000	$542K	0.03%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
RAAQREAL ASSET ACQUISITION CORP	50,000	$524K	0.03%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BCSSBAIN CAP GSS INVT CORP	50,000	$506K	0.03%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SKILSKILLSOFT CORP	41,692	$179K	0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
GENVRGEN DIGITAL INC	250,516	$120K	0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BEAGRBOLD EAGLE ACQUISITION CORP	400,000	$91.9K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BACCRBLUE ACQUISITION CORP.	200,000	$64.7K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
RMCOWROYALTY MGMT HLDG CORP	221,686	$53.9K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BLZRWTRAILBLAZER ACQUISITION CORP	133,333	$50.7K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
MKLYRMCKINLEY ACQUISITION CORP	100,000	$11K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
INACRINDIGO ACQUISITION CORP	75,000	$10.3K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
DAICWCID HOLDCO INC	282,640	$7.49K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
SCAGWSCAGE FUTURE	127,590	$6.53K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
TVGNWTEVOGEN INC	181,387	$6.15K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
MSAIWMULTISENSOR AI HOLDINGS INC	142,585	$5.59K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline
BRLSWBOREALIS FOODS INC	70,030	$4.67K	<0.01%	The filing omitted confidential holdings, a later amendment may add them.	Timeline

Options

Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).

Security	Type	Amount	Value
AALAMERICAN AIRLINES GROUP INC Stock	put	2,133,300	$461K
SPYSTATE STR SPDR S&P 500 ETF T SHS	put	115,000	$257K
BEBLOOM ENERGY CORP COM	call	15,000	$245K
SNOWSNOWFLAKE INC Stock	call	20,000	$122K
LCIDLUCID GROUP INC Stock	put	12,700	$69.6K
PANWPALO ALTO NETWORKS INC COM	call	10,000	$25.8K
QQQINVESCO QQQ TR COM	put	26,000	$1.56K

Principal amounts

Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).

Security	Type	Amount	Value
SNOWFLAKE INCSNOWFLAKE INC NOTE 10/0	principal	25,000,000	$30.8M
DUKE ENERGY CORP NEWDUKE ENERGY CORP NEW CONV BND	principal	25,000,000	$27.7M
CLOUDFLARE INCCLOUDFLARE INC NOTE 8/1	principal	21,500,000	$25.2M
LIVE NATION ENTERTAINMENT INLIVE NATION ENTERTAINMENT IN NOTE 3.125% 1/1	principal	15,000,000	$22.9M
ON SEMICONDUCTOR CORPON SEMICONDUCTOR CORP NOTE 0.500% 3/0	principal	20,000,000	$19.7M
AKAMAI TECHNOLOGIES INCAKAMAI TECHNOLOGIES INC NOTE 1.125% 2/1	principal	15,000,000	$17.2M

How Q1 2026 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

Filing	Role	Amendment	Filed	Accepted	Ingested
13F-HR 0002081629-26-000003	base		2026-05-15	acceptance time not in the bulk data set	2026-10-06 09:58:43 UTC
13F-HR/A 0002081629-26-000006	added	new holdings	2026-08-14	acceptance time not in the bulk data set	2026-10-06 09:57:27 UTC