SEC 13F Intelligence

Managers / Q1 2026

O'Connor Alternative Investments LLCNEW FILER

CIK 0002081629 · 110 E. 59TH ST., NEW YORK, NY, 10022 · 212-558-4568

Reported Value
$1.2B
Q1 2026
Positions
128
Filings on Record
1
2019–present window
Filed
May 15, 2026
original filing

Summary

O'connor Alternative Investments LLC reported $1.2B in U.S.-listed holdings across 128 positions for Q1 2026.

The portfolio is heavily concentrated: HO1 alone accounts for 20.2% of reported value.

Portfolio Metrics

Top-10 Concentration
+73.9%
share of reported value
Largest Position
+20.2%
Hologic In

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q1 ’26: $1.2BQ1 ’26filingsflow.com

Portfolio Composition

By security type
Common Stock: 70.9%Other: 15.7%US DOMESTIC: 12.3%ETP: 0.9%Unit: 0.2%Other: 0.0%
  • Common Stock · 70.9% · $827M
  • Other · 15.7% · $184M
  • US DOMESTIC · 12.3% · $143M
  • ETP · 0.9% · $11M
  • Unit · 0.2% · $2M
  • Other · 0.0% · $198,083

Quarter-over-Quarter Changes full breakdown →

IssuerMoveShare ΔShares nowValue ΔValue now
HO1HOLOGIC INNEW+3.12M3.12M+$236M$236M
ALAIR LEASENEW+2.86M2.86M+$186M$186M
AM6AMICUS THENEW+8.44M8.44M+$122M$122M
SDASEALED AIRNEW+2.21M2.21M+$93M$93M
K4FONESTREAMNEW+3.19M3.19M+$76M$76M
DAWNGBXDAY ONE BINEW+1.87M1.87M+$40M$40M
SNOWFLAKENEW+25.00M25.00M+$31M$31M
DUKE ENERGNEW+25.00M25.00M+$28M$28M

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q1 2026

50 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1HO1HOLOGIC INhistory →COM20.19%$236M3.12M
2ALAIR LEASEhistory →CLA15.91%$186M2.86M
3AM6AMICUS THEhistory →COM10.46%$122M8.44M
4SDASEALED AIRhistory →COM7.98%$93M2.21M
5K4FONESTREAMhistory →CLA6.55%$76M3.19M
6DAWNGBXDAY ONE BIhistory →COM3.43%$40M1.87M
7SNOWFLAKENOTE12.64%$31M25.00M
8DUKE ENERGNOTE42.37%$28M25.00M
9POH3CARNIVAL Phistory →ADS2.17%$25M982.6K
10CLOUDFLARENOTE82.16%$25M21.50M
11LIVE NATIONOTE31.96%$23M15.00M
12ON SEMICONNOTE01.69%$20M20.00M
13AKAMAI TECNOTE11.47%$17M15.00M
14KLARNA GROSHS1.26%$15M1.13M
15GOOGALPHABET Ihistory →CAPST1.24%$14M50.3K
16VANECK ETFSEMIC0.90%$11M27.5K
17RNAATRIUM THECOM0.66%$8M578.0K
18FOXFOX CORPCLBCO0.63%$7M137.8K
19JENA ACQUIUSDCL0.61%$7M700.0K
20EGH ACQUISSHSCL0.44%$5M500.0K
21KENSINGTONUNIT90.43%$5M500.0K
22ONEIM ACQUORDSH0.43%$5M500.0K
23GORES HLDGSHSCL0.42%$5M474.9K
24CANTOR EQUSHSCL0.39%$5M450.0K
25ZZILLOW GROCLCCA0.38%$4M107.9K
26AGRICULTURSHSCL0.37%$4M384.2K
27TRAILBLAZEORDSH0.34%$4M400.0K
28TRG LATINUNIT00.30%$3M350.0K
29LIVE OAK ACLASH0.29%$3M324.9K
30NEWHOLD INORDSH0.29%$3M324.6K
31WDCWESTERN DICOM0.28%$3M12.0K
32OAKTREE ACSHSCL0.27%$3M300.0K
33ARMADA ACQUNIT00.26%$3M300.0K
34NY4BCLEARWAY ECLA0.25%$3M75.0K
35NORWEGIANSHS0.23%$3M145.2K
36GP-ACT IIICLA0.23%$3M250.0K
37ACELACCEL ENTECOMCL0.23%$3M246.7K
38STELLAR VSHSCL0.22%$3M250.0K
39DUNE ACQUISHSCL0.22%$3M250.0K
40BLUE WTR AORDSH0.22%$3M250.0K
41NEW PROVIDUSDCL0.22%$3M250.0K
42CARTESIANCOMCL0.22%$3M250.0K
43THAYER VENCLA0.22%$3M250.0K
44TALON CAPORDSH0.22%$3M250.0K
45SOLARIUS CSHSCL0.22%$3M250.0K
46PIONEER ACCLAOR0.22%$3M250.0K
47OXLEY BRIDUSDCL0.22%$3M250.0K
48M3-BRIGADEORDSH0.22%$3M250.0K
49HIGHVIEW MORDSH0.22%$3M250.0K
50CSLM DIGITUSDCL0.22%$3M250.0K

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$1.2B128May 15, 202613F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.