OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)

13F filer · CIK 0001132716

Last filed Aug 14, 2026

Inactive · not filing 13F

13F portfolio value$3.76BU.S. long equity reported on 13F

Positions18770 new · 88 closed

Net flow last quarter+$572MBuys minus sells

Top 10 positions weight61.2%Concentration

Holdings

13F · last 4 quarters free

Scroll for earlier quarters

Company	Value	% of portfolio	% of company	POSITION CHANGE qoq %	First reported
Q4 2025Reported Aug 14, 2026187 positions
GTLSChart Industries Inc	$380M	10.12%	4.10%	+44.0%	Q2 2023
CMAComerica Inc	$288M	7.66%	2.59%	New	Q4 2025
DAYDayforce, Inc.	$283M	7.54%	2.56%	New	Q4 2025
RNAMAvidity Biosciences, Inc.	$268M	7.14%	2.46%	New	Q4 2025
FYBRFrontier Communications Parent, Inc.	$263M	6.99%	Not reported	+17.4%	Q3 2024
ALSumisho Air Lease Corporation	$195M	5.20%	2.72%	+271.8%	Q3 2025
HOLXHologic Inc	$194M	5.17%	1.17%	New	Q4 2025
EXKEndeavour Silver Corp	$181M	4.81%	0.68%	New	Q4 2025
CADECadence Financial Corp	$125M	3.33%	Not reported	New	Q4 2025
CFLTConfluent, Inc.	$120M	3.20%	3.63%	Not reported	Q1 2023
KLARKlarna Group plc	$72.3M	1.93%	0.66%	New	Q4 2025
CDTXCidara Therapeutics, Inc.	$69.7M	1.86%	1.00%	New	Q4 2025
SEESealed Air Corp	$49.5M	1.32%	0.81%	New	Q4 2025
SNVSynovus Financial Corp	$35M	0.93%	0.50%	New	Q4 2025
AVGOBroadcom Inc.	$27.3M	0.73%	0.00%	+892.4%	Q2 2023
MATMattel Inc	$19.3M	0.51%	0.31%	+3.2%	Q1 2023
NVDANvidia Corp	$18.1M	0.48%	0.00%	-48.5%	Q1 2023
AEPAmerican Electric Power Co Inc	$15M	0.40%	0.02%	+210.1%	Q2 2024
CNPCenterpoint Energy Inc	$14.6M	0.39%	0.06%	-1.6%	Q2 2025
LNTAlliant Energy Corp	$14.6M	0.39%	0.09%	-26.0%	Q3 2025
FOLDAmicus Therapeutics, Inc.	$14.2M	0.38%	0.32%	New	Q4 2025
CRHCRH Public Ltd Co	$13.7M	0.36%	0.02%	Not reported	Q2 2024
PHParker-Hannifin Corp	$13.6M	0.36%	0.01%	Not reported	Q3 2024
WMWaste Management Inc	$13.6M	0.36%	0.02%	New	Q4 2025
BABoeing Co	$11.2M	0.30%	0.01%	Not reported	Q3 2023
CROXCrocs, Inc.	$10.6M	0.28%	0.25%	Not reported	Q3 2024
TLNTalen Energy Corp	$9.83M	0.26%	0.06%	New	Q4 2025
NEENextera Energy Inc	$8.77M	0.23%	0.01%	New	Q4 2025
BTGB2gold Corp	$8.31M	0.22%	0.14%	-10.4%	Q2 2024
PANWPalo Alto Networks Inc	$8.29M	0.22%	0.01%	Not reported	Q1 2023
GOOGLAlphabet Inc.	$7.83M	0.21%	0.00%	Not reported	Q1 2023
PLYMPlymouth Industrial REIT, Inc.	$7.67M	0.20%	0.79%	-46.2%	Q3 2025
HIHillenbrand, Inc.	$7.59M	0.20%	0.34%	New	Q4 2025
JENAJENA ACQUISITION Corp II	$7.12M	0.19%	Not reported	Not reported	Q3 2025
TOSTToast, Inc.	$7.1M	0.19%	0.09%	+150.0%	Q4 2024
KNXKnight-Swift Transportation Holdings Inc.	$7M	0.19%	0.08%	New	Q4 2025
TSLATesla, Inc.	$6.12M	0.16%	0.00%	+15.4%	Q1 2023
TELTE Connectivity plc	$6M	0.16%	0.01%	Not reported	Q4 2024
FUTUFutu Holdings Ltd	$5.92M	0.16%	0.01%	Not reported	Q1 2025
UALUnited Airlines Holdings, Inc.	$5.59M	0.15%	0.02%	Not reported	Q1 2024
SAIASaia Inc	$5.17M	0.14%	0.06%	New	Q4 2025
EGHAEGH Acquisition Corp.	$5.07M	0.13%	Not reported	Not reported	Q2 2025
MELIMercadolibre Inc	$5.04M	0.13%	0.00%	-62.0%	Q3 2023
FLSFlowserve Corp	$5.02M	0.13%	0.06%	Not reported	Q4 2024
HONHoneywell International Inc	$5.02M	0.13%	0.00%	Not reported	Q4 2024
LYVLive Nation Entertainment, Inc.	$4.87M	0.13%	0.01%	-49.0%	Q2 2025
GTENGores Holdings X, Inc. / CI	$4.87M	0.13%	Not reported	-13.7%	Q2 2025
CEPVCantor Equity Partners V, Inc.	$4.61M	0.12%	Not reported	New	Q4 2025
AXTAAxalta Coating Systems Ltd.	$4.54M	0.12%	0.07%	+64.9%	Q1 2023
ETREntergy Corp	$4.51M	0.12%	0.01%	-76.6%	Q1 2025

Q3 2025Reported Aug 14, 2026205 positions
VRNAVerona Pharma plc	$457M	13.68%	0.62%	Not reported	Q1 2023
GTLSChart Industries Inc	$256M	7.67%	2.85%	Not reported	Q2 2023
FYBRFrontier Communications Parent, Inc.	$220M	6.57%	Not reported	-2.5%	Q3 2024
COOPCooperative Bankshares Inc	$169M	5.05%	Not reported	+83.9%	Q2 2025
IPGInterpublic Group of Companies, Inc.	$132M	3.95%	1.29%	+373.1%	Q2 2025
INFAInformatica LLC	$113M	3.39%	4.37%	+0.3%	Q2 2023
SPRSpirit AeroSystems Holdings, Inc.	$106M	3.18%	2.34%	-2.5%	Q3 2024
MRUSMerus N.V.	$61.6M	1.84%	0.86%	+3816.0%	Q1 2023
ALSumisho Air Lease Corporation	$52M	1.56%	0.73%	New	Q3 2025
NVDANvidia Corp	$35.2M	1.05%	0.00%	-18.6%	Q1 2023
ELMEElme Communities	$31.5M	0.94%	2.12%	Not reported	Q2 2023
EAElectronic Arts Inc.	$30.3M	0.91%	Not reported	Not reported	Q3 2023
LNTAlliant Energy Corp	$20.4M	0.61%	0.12%	New	Q3 2025
ETREntergy Corp	$19.4M	0.58%	0.05%	+82.5%	Q1 2025
SOSouthern Co	$19.1M	0.57%	0.02%	-10.7%	Q2 2024
PKGPackaging Corp of America	$16.5M	0.49%	0.08%	Not reported	Q2 2024
MATMattel Inc	$15.9M	0.48%	0.29%	+11.9%	Q1 2023
MELIMercadolibre Inc	$15.4M	0.46%	0.01%	+0.6%	Q3 2023
CNPCenterpoint Energy Inc	$15M	0.45%	0.06%	-26.1%	Q2 2025
PLYMPlymouth Industrial REIT, Inc.	$14.6M	0.44%	1.46%	New	Q3 2025
WCNWaste Connections, Inc.	$11.3M	0.34%	0.03%	Not reported	Q4 2023
ITUBItau Unibanco Holding S.A.	$11M	0.33%	0.03%	+3.3%	Q2 2024
LYVLive Nation Entertainment, Inc.	$10.9M	0.33%	0.03%	+44.1%	Q2 2025
EMBJEmbraer S.A.	$10.4M	0.31%	0.02%	+67.1%	Q1 2024
CROXCrocs, Inc.	$10.4M	0.31%	0.24%	+47.6%	Q3 2024
BTGB2gold Corp	$10.2M	0.30%	0.16%	+15.2%	Q2 2024
OXYOccidental Petroleum Corp	$9.77M	0.29%	0.02%	-55.7%	Q1 2023
CHRWC. H. Robinson Worldwide, Inc.	$9.51M	0.28%	0.06%	New	Q3 2025
KSPIJoint Stock Co Kaspi.kz	$9.3M	0.28%	0.06%	+33.1%	Q1 2024
SNPSSynopsys Inc	$9.28M	0.28%	0.01%	Not reported	Q2 2023
CLHClean Harbors Inc	$9.16M	0.27%	0.07%	-8.3%	Q3 2024
NVTnVent Electric plc	$9.12M	0.27%	0.06%	+15.6%	Q2 2023
APDAir Products & Chemicals, Inc.	$8.6M	0.26%	0.01%	-8.5%	Q2 2024
URIUnited Rentals, Inc.	$8.37M	0.25%	0.01%	-44.7%	Q2 2025
NRGNRG Energy, Inc.	$7.93M	0.24%	0.03%	-20.0%	Q4 2024
VSTVistra Corp.	$7.89M	0.24%	0.01%	+15.2%	Q1 2024
PNRPENTAIR plc	$7.53M	0.23%	0.04%	-41.0%	Q4 2023
JENAJENA ACQUISITION Corp II	$7.11M	0.21%	Not reported	New	Q3 2025
PONYPony AI Inc.	$7M	0.21%	0.09%	+11.5%	Q2 2025
DALDelta Air Lines, Inc.	$6.53M	0.20%	0.02%	-14.8%	Q1 2023
COINCoinbase Global, Inc.	$6.41M	0.19%	0.01%	New	Q3 2025
APHAmphenol Corp	$6.19M	0.19%	0.00%	Not reported	Q2 2023
PDDPDD Holdings Inc.	$6.19M	0.19%	0.00%	-41.6%	Q1 2023
HUBGHub Group, Inc.	$5.92M	0.18%	0.23%	New	Q3 2025
METAMeta Platforms, Inc.	$5.88M	0.18%	Not reported	+88.8%	Q1 2023
VMCVulcan Materials CO	$5.83M	0.17%	0.01%	-42.7%	Q2 2023
PAGSPagSeguro Digital Ltd.	$5.82M	0.17%	0.22%	+32.9%	Q2 2025
MLMMartin Marietta Materials Inc	$5.74M	0.17%	0.02%	New	Q3 2025
GTENGores Holdings X, Inc. / CI	$5.62M	0.17%	Not reported	+10.0%	Q2 2025
INTRInter & Co, Inc.	$5.44M	0.16%	0.26%	-13.6%	Q3 2024

Q2 2025Reported Aug 14, 2026267 positions
WBAWalgreens Boots Alliance, Inc.	$288M	7.82%	2.90%	+148.4%	Q1 2025
SKXSkechers USA Inc	$227M	6.16%	Not reported	New	Q2 2025
BPMCBlueprint Medicines Corporation	$220M	5.96%	2.65%	+11427.7%	Q1 2023
FYBRFrontier Communications Parent, Inc.	$219M	5.95%	Not reported	+14.8%	Q3 2024
CHXChampionX Corp	$187M	5.08%	3.94%	-3.5%	Q2 2024
ANSSAnsys Inc	$173M	4.70%	0.56%	-1.5%	Q1 2024
HESHess Corp	$146M	3.97%	Not reported	-63.8%	Q4 2023
DNBDun & Bradstreet Corp	$124M	3.37%	36.84%	New	Q2 2025
JNPRJuniper Networks Inc	$120M	3.25%	0.90%	-52.0%	Q1 2024
INFAInformatica LLC	$111M	3.00%	4.36%	Not reported	Q2 2023
SPRSpirit AeroSystems Holdings, Inc.	$108M	2.92%	2.41%	-5.5%	Q3 2024
LBRDKLiberty Broadband Corp	$90.4M	2.45%	Not reported	New	Q2 2025
COOPCooperative Bankshares Inc	$64.9M	1.76%	Not reported	New	Q2 2025
AMEDAmedisys Inc	$46.7M	1.27%	1.44%	-42.0%	Q3 2024
ESGREnstar Group Inc	$39.5M	1.07%	Not reported	+75.8%	Q4 2024
NVDANvidia Corp	$36.6M	0.99%	0.00%	+68.3%	Q1 2023
IPGInterpublic Group of Companies, Inc.	$24.5M	0.66%	0.27%	New	Q2 2025
GMSGMS Inc.	$21.8M	0.59%	0.53%	New	Q2 2025
SOSouthern Co	$20.8M	0.56%	0.02%	+7.8%	Q2 2024
OXYOccidental Petroleum Corp	$19.6M	0.53%	0.05%	Not reported	Q1 2023
CNPCenterpoint Energy Inc	$19.3M	0.52%	0.08%	New	Q2 2025
FLFoot Locker, Inc.	$17.6M	0.48%	0.76%	New	Q2 2025
MELIMercadolibre Inc	$17.1M	0.46%	0.01%	+45.7%	Q3 2023
DUKDuke Energy CORP	$17M	0.46%	0.02%	New	Q2 2025
MATMattel Inc	$16.6M	0.45%	0.26%	-13.0%	Q1 2023
URIUnited Rentals, Inc.	$11.9M	0.32%	0.02%	New	Q2 2025
PNRPENTAIR plc	$11.8M	0.32%	0.07%	+24.5%	Q4 2023
DOVDOVER Corp	$11.2M	0.30%	0.04%	Not reported	Q1 2024
CLHClean Harbors Inc	$9.94M	0.27%	0.08%	Not reported	Q3 2024
ITUBItau Unibanco Holding S.A.	$9.83M	0.27%	0.03%	-19.1%	Q2 2024
NRGNRG Energy, Inc.	$9.82M	0.27%	0.03%	+4.5%	Q4 2024
APDAir Products & Chemicals, Inc.	$9.72M	0.26%	0.02%	-1.5%	Q2 2024
IRIngersoll Rand Inc.	$9.66M	0.26%	0.03%	+674.0%	Q2 2023
ETREntergy Corp	$9.49M	0.26%	0.03%	-20.5%	Q1 2025
AMZNAmazon Com Inc	$9.48M	0.26%	0.00%	-10.6%	Q1 2023
CCKCrown Holdings, Inc.	$8.99M	0.24%	0.08%	Not reported	Q2 2023
FBINFortune Brands Innovations, Inc.	$8.62M	0.23%	0.14%	Not reported	Q2 2023
VMCVulcan Materials CO	$8.62M	0.23%	0.03%	-10.4%	Q2 2023
CROXCrocs, Inc.	$8.51M	0.23%	0.15%	Not reported	Q3 2024
PDDPDD Holdings Inc.	$8.39M	0.23%	0.00%	+89.5%	Q1 2023
LXLexinFintech Holdings Ltd.	$8.29M	0.22%	Not reported	+3.4%	Q4 2024
CDNSCadence Design Systems Inc	$8.14M	0.22%	0.01%	Not reported	Q1 2024
AMDAdvanced Micro Devices Inc	$7.79M	0.21%	0.00%	+815.4%	Q1 2023
UPSUnited Parcel Service Inc	$7.59M	0.21%	0.01%	-7.2%	Q4 2023
CFLTConfluent, Inc.	$7.48M	0.20%	0.27%	Not reported	Q1 2023
AVGOBroadcom Inc.	$7.39M	0.20%	0.00%	+61.7%	Q2 2023
KSPIJoint Stock Co Kaspi.kz	$7.26M	0.20%	0.05%	+38.0%	Q1 2024
MSMorgan Stanley	$7.04M	0.19%	0.00%	New	Q2 2025
LYVLive Nation Entertainment, Inc.	$7.03M	0.19%	0.02%	New	Q2 2025
VSTVistra Corp.	$6.78M	0.18%	0.01%	Not reported	Q1 2024

Q1 2025Reported May 15, 2026242 positions
HESHess Corp	$465M	11.00%	Not reported	+1.1%	Q4 2023
DFSDiscover Financial Services	$408M	9.64%	0.95%	+104.8%	Q1 2024
ITCIIntra-Cellular Therapies, Inc.	$408M	9.64%	2.90%	+15139.3%	Q2 2024
CHXChampionX Corp	$233M	5.51%	4.09%	+1.3%	Q2 2024
JNPRJuniper Networks Inc	$226M	5.35%	1.87%	-23.8%	Q1 2024
BECNBeacon Roofing Supply Inc	$195M	4.61%	2.55%	New	Q1 2025
FYBRFrontier Communications Parent, Inc.	$188M	4.45%	Not reported	+27.0%	Q3 2024
ANSSAnsys Inc	$158M	3.75%	0.57%	+70.2%	Q1 2024
BERYBerry Global Group, Inc.	$137M	3.23%	1.69%	+126.3%	Q4 2024
WBAWalgreens Boots Alliance, Inc.	$113M	2.67%	1.17%	New	Q1 2025
SPRSpirit AeroSystems Holdings, Inc.	$103M	2.43%	2.55%	+1.2%	Q3 2024
HEESH&E Equipment Services, Inc.	$103M	2.43%	2.96%	New	Q1 2025
JWNNordstrom Inc	$96.6M	2.28%	2.37%	New	Q1 2025
AMEDAmedisys Inc	$75.8M	1.79%	2.49%	-20.9%	Q3 2024
XUnited States Steel Corp	$53M	1.25%	0.56%	-8.9%	Q4 2023
OXYOccidental Petroleum Corp	$23M	0.54%	0.05%	Not reported	Q1 2023
ESGREnstar Group Inc	$22.2M	0.53%	Not reported	+15.5%	Q4 2024
RSGRepublic Services, Inc.	$21.4M	0.51%	0.03%	+11.9%	Q4 2024
SOSouthern Co	$19.3M	0.46%	0.02%	+20.8%	Q2 2024
MATMattel Inc	$18.8M	0.45%	0.29%	Not reported	Q1 2023
NVDANvidia Corp	$14.9M	0.35%	0.00%	-22.9%	Q1 2023
CNICanadian National Railway Co	$13.1M	0.31%	0.02%	+16.7%	Q4 2024
XELXcel Energy Inc	$12.9M	0.31%	0.03%	-23.2%	Q4 2024
LINLinde PLC	$12.4M	0.29%	0.01%	-6.8%	Q2 2023
ETREntergy Corp	$12.3M	0.29%	0.03%	New	Q1 2025
CCRNCross Country Healthcare Inc	$12M	0.28%	2.48%	New	Q1 2025
NSCNorfolk Southern Corp	$11.4M	0.27%	0.02%	-6.9%	Q4 2023
LXLexinFintech Holdings Ltd.	$11.2M	0.27%	Not reported	+161.5%	Q4 2024
NINisource Inc.	$11.1M	0.26%	0.06%	-36.1%	Q4 2024
GPKGraphic Packaging Holding Co	$10.7M	0.25%	0.14%	+181.1%	Q4 2024
APDAir Products & Chemicals, Inc.	$10.3M	0.24%	0.02%	+156.2%	Q2 2024
GTESGates Industrial Corp Ltd.	$10.1M	0.24%	0.21%	+267.9%	Q2 2024
IPInternational Paper Co	$10.1M	0.24%	0.03%	Not reported	Q4 2023
CRHCRH Public Ltd Co	$9.99M	0.24%	0.02%	-59.7%	Q2 2024
ITUBItau Unibanco Holding S.A.	$9.84M	0.23%	0.03%	-37.7%	Q2 2024
EMBJEmbraer S.A.	$9.49M	0.22%	0.03%	+89.3%	Q1 2024
AMZNAmazon Com Inc	$9.2M	0.22%	0.00%	+53.3%	Q1 2023
UPSUnited Parcel Service Inc	$8.91M	0.21%	0.01%	Not reported	Q4 2023
MELIMercadolibre Inc	$8.74M	0.21%	0.01%	-65.2%	Q3 2023
VMCVulcan Materials CO	$8.61M	0.20%	0.03%	Not reported	Q2 2023
PNRPENTAIR plc	$8.1M	0.19%	0.06%	Not reported	Q4 2023
SAROStandardAero, Inc.	$7.99M	0.19%	0.09%	New	Q1 2025
SHWSherwin Williams Co	$7.99M	0.19%	0.01%	-17.4%	Q1 2024
APHAmphenol Corp	$7.87M	0.19%	0.01%	+48.3%	Q2 2023
CACICaci International Inc	$7.69M	0.18%	0.10%	New	Q1 2025
EQCEQC Liquidating Trust	$6.6M	0.16%	Not reported	+1.2%	Q3 2024
FTVFortive Corp	$5.95M	0.14%	0.02%	-9.0%	Q3 2024
BABoeing Co	$5.8M	0.14%	0.00%	+0.9%	Q3 2023
KSPIJoint Stock Co Kaspi.kz	$5.76M	0.14%	0.03%	-33.6%	Q1 2024
FUTUFutu Holdings Ltd	$5.62M	0.13%	0.01%	New	Q1 2025

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