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William John Sempolinski

13F filer · CIK 0002149024
Reported Aug 14, 2026
Net buyer this quarter
13F portfolio value$248MU.S. long equity reported on 13F
Positions7015 new · 4 closed
Net flow last quarter+$6.91MBuys minus sells
Top 10 positions weight43.7%Concentration

Holdings

13F · last 4 quarters free
Scroll for earlier quarters
CompanyValue% of portfolio% of companyPOSITION CHANGE qoq %First reported
Q2 2026Reported Aug 14, 202670 positions
NVDANvidia Corp$50.4M20.34%0.00%-1.1%Q4 2025
AAPLApple Inc.$22.2M8.94%0.00%-0.3%Q4 2025
GOOGLAlphabet Inc.$7.69M3.10%0.00%+0.5%Q4 2025
AMZNAmazon Com Inc$6.23M2.51%0.00%-0.1%Q4 2025
SMHMarket Vectors ETF Trust$5.17M2.09%Not reportedNewQ2 2026
MSFTMicrosoft Corp$4.98M2.01%0.00%-21.5%Q4 2025
NOBLNoble International, Ltd.$3.36M1.36%Not reported-1.0%Q4 2025
METAMeta Platforms, Inc.$3.11M1.25%Not reported-5.2%Q4 2025
RKLBRocket Lab Corp$2.62M1.06%0.00%-2.8%Q4 2025
SHWSherwin Williams Co$2.46M0.99%0.00%-0.5%Q4 2025
JXNJackson Financial Inc.$2.22M0.90%0.03%+2.4%Q4 2025
CATCaterpillar Inc$1.95M0.79%0.00%Not reportedQ4 2025
ORealty Income Corp$1.94M0.78%0.00%+1.6%Q4 2025
BRK.BBerkshire Hathaway Inc$1.76M0.71%Not reported+40.4%Q4 2025
GOOGAlphabet Inc.$1.62M0.65%Not reportedNot reportedQ4 2025
TSMTaiwan Semiconductor Manufacturing Co Ltd$1.6M0.65%0.00%Not reportedQ4 2025
QSQuantumScape Corp$1.53M0.62%0.21%+4.6%Q4 2025
RTXRTX Corp$1.48M0.60%0.00%+6.0%Q4 2025
ASMLAsml Holding NV$1.41M0.57%0.00%Not reportedQ4 2025
IBMInternational Business Machines Corp$1.36M0.55%0.00%-38.1%Q4 2025
VVisa Inc.$1.24M0.50%0.00%Not reportedQ4 2025
INDBIndependent Bank Corp$1.23M0.50%0.03%-7.6%Q4 2025
AVGOBroadcom Inc.$1.17M0.47%0.00%+3.4%Q4 2025
GLWCorning Inc$1.15M0.47%0.00%Not reportedQ1 2026
NGGNational Grid PLC$1.14M0.46%0.00%+4.0%Q4 2025
NBISNebius Group N.V.$1.13M0.46%0.00%+9.2%Q4 2025
WMTWalmart Inc.$1.09M0.44%0.00%Not reportedQ4 2025
MUMicron Technology Inc$958K0.39%0.00%+9.2%Q1 2026
KMIKinder Morgan, Inc.$914K0.37%0.00%-1.8%Q4 2025
BACBank of America Corp$913K0.37%0.00%0.0%Q4 2025
CCLCarnival Corp Ltd.$883K0.36%0.00%-6.1%Q4 2025
CFGCitizens Financial Group Inc$877K0.35%0.00%Not reportedQ4 2025
AMATApplied Materials Inc$844K0.34%0.00%Not reportedQ4 2025
GEGeneral Electric Co$768K0.31%0.00%Not reportedQ4 2025
SPCXSpace Exploration Technologies Corp$695K0.28%Not reportedNewQ2 2026
INTCIntel Corp$677K0.27%0.00%NewQ2 2026
STXSeagate Technology Holdings plc$651K0.26%0.00%Not reportedQ1 2026
LRCXLam Research Corp$641K0.26%0.00%NewQ2 2026
ARMArm Holdings PLC$639K0.26%0.00%Not reportedQ1 2026
STWDStarwood Property Trust, Inc.$617K0.25%0.01%+7.1%Q4 2025
JNJJohnson & Johnson$541K0.22%0.00%+48.9%Q4 2025
GRALGRAIL, Inc.$488K0.20%0.02%Not reportedQ4 2025
LLYELI LILLY & Co$431K0.17%0.00%-7.5%Q4 2025
GHGuardant Health, Inc.$428K0.17%0.00%NewQ2 2026
LYGLloyds Banking Group plc$426K0.17%0.00%-15.3%Q4 2025
ENBEnbridge Inc$407K0.16%0.00%-7.4%Q4 2025
JPMJPMorgan Chase & Co$365K0.15%0.00%Not reportedQ4 2025
PRUPrudential Financial Inc$356K0.14%0.00%-17.5%Q4 2025
CCitigroup Inc$350K0.14%0.00%Not reportedQ4 2025
RVMDRevolution Medicines, Inc.$346K0.14%0.00%NewQ2 2026
Q1 2026Reported Aug 26, 202659 positions
NVDANvidia Corp$44.4M22.29%0.00%+0.3%Q4 2025
AAPLApple Inc.$19.5M9.79%0.00%+5.6%Q4 2025
MSFTMicrosoft Corp$6.29M3.16%0.00%-3.8%Q4 2025
GOOGLAlphabet Inc.$6.16M3.09%0.00%+4.9%Q4 2025
AMZNAmazon Com Inc$5.45M2.73%0.00%-0.2%Q4 2025
METAMeta Platforms, Inc.$3.33M1.67%Not reported-1.4%Q4 2025
NOBLNoble International, Ltd.$3.21M1.61%Not reported+0.2%Q4 2025
SHWSherwin Williams Co$2.3M1.15%0.00%+1.3%Q4 2025
JXNJackson Financial Inc.$2.24M1.13%0.03%Not reportedQ4 2025
IBMInternational Business Machines Corp$1.9M0.95%0.00%-18.7%Q4 2025
ORealty Income Corp$1.88M0.94%0.00%+2.3%Q4 2025
RKLBRocket Lab Corp$1.71M0.86%0.00%-11.8%Q4 2025
RTXRTX Corp$1.42M0.71%0.00%-1.1%Q4 2025
GOOGAlphabet Inc.$1.31M0.66%Not reported+48.6%Q4 2025
CATCaterpillar Inc$1.3M0.65%0.00%+12.3%Q4 2025
QSQuantumScape Corp$1.23M0.62%0.20%+3.5%Q4 2025
BRK.BBerkshire Hathaway Inc$1.2M0.60%Not reported+201.2%Q4 2025
INDBIndependent Bank Corp$1.2M0.60%0.03%-7.6%Q4 2025
WMTWalmart Inc.$1.19M0.60%0.00%+6.1%Q4 2025
TSMTaiwan Semiconductor Manufacturing Co Ltd$1.14M0.57%0.00%+187.2%Q4 2025
NGGNational Grid PLC$1.12M0.56%0.00%+9.4%Q4 2025
VVisa Inc.$1.09M0.55%0.00%+33.3%Q4 2025
KMIKinder Morgan, Inc.$976K0.49%0.00%-5.6%Q4 2025
ASMLAsml Holding NV$938K0.47%0.00%Not reportedQ4 2025
AVGOBroadcom Inc.$924K0.46%0.00%+97.7%Q4 2025
CCLCarnival Corp Ltd.$851K0.43%0.00%-11.1%Q4 2025
BACBank of America Corp$781K0.39%0.00%+21.3%Q4 2025
CFGCitizens Financial Group Inc$751K0.38%0.00%-28.5%Q4 2025
PLTRPalantir Technologies Inc.$745K0.37%0.00%-23.9%Q4 2025
GLWCorning Inc$613K0.31%0.00%NewQ1 2026
STWDStarwood Property Trust, Inc.$606K0.30%0.01%Not reportedQ4 2025
GEGeneral Electric Co$583K0.29%0.00%Not reportedQ4 2025
BSVNBank7 Corp.$525K0.26%0.07%Not reportedQ4 2025
ENBEnbridge Inc$439K0.22%0.00%Not reportedQ4 2025
LYGLloyds Banking Group plc$434K0.22%0.00%-8.4%Q4 2025
AMATApplied Materials Inc$399K0.20%0.00%Not reportedQ4 2025
PRUPrudential Financial Inc$391K0.20%0.00%-4.8%Q4 2025
NBISNebius Group N.V.$389K0.20%0.00%+11.9%Q4 2025
LMTLockheed Martin Corp$364K0.18%0.00%NewQ1 2026
LLYELI LILLY & Co$357K0.18%0.00%-11.4%Q4 2025
JNJJohnson & Johnson$350K0.18%0.00%+7.5%Q4 2025
COSTCostco Wholesale Corp$349K0.18%0.00%+16.7%Q4 2025
JPMJPMorgan Chase & Co$328K0.16%0.00%Not reportedQ4 2025
MPLXMPLX LP$316K0.16%0.00%+14.5%Q4 2025
HDHome Depot, Inc.$296K0.15%0.00%+0.8%Q4 2025
CCitigroup Inc$284K0.14%0.00%Not reportedQ4 2025
ARMArm Holdings PLC$273K0.14%0.00%NewQ1 2026
RIORio Tinto PLC$271K0.14%0.00%Not reportedQ4 2025
DUKDuke Energy CORP$264K0.13%0.00%+13.5%Q4 2025
STXSeagate Technology Holdings plc$264K0.13%0.00%NewQ1 2026
Q4 2025Reported Aug 26, 202656 positions
NVDANvidia Corp$47.3M23.28%0.00%NewQ4 2025
AAPLApple Inc.$19.8M9.72%0.00%NewQ4 2025
MSFTMicrosoft Corp$8.54M4.20%0.00%NewQ4 2025
GOOGLAlphabet Inc.$6.39M3.14%0.00%NewQ4 2025
AMZNAmazon Com Inc$6.04M2.97%0.00%NewQ4 2025
METAMeta Platforms, Inc.$3.89M1.92%Not reportedNewQ4 2025
NOBLNoble International, Ltd.$3.14M1.55%Not reportedNewQ4 2025
SKYYSkye International, Inc$2.99M1.47%Not reportedNewQ4 2025
IBMInternational Business Machines Corp$2.85M1.40%0.00%NewQ4 2025
SHWSherwin Williams Co$2.29M1.13%0.00%NewQ4 2025
JXNJackson Financial Inc.$2.26M1.11%0.03%NewQ4 2025
RKLBRocket Lab Corp$2.1M1.03%0.01%NewQ4 2025
BXBlackstone Inc.$2.02M0.99%0.00%NewQ4 2025
QSQuantumScape Corp$1.94M0.96%0.20%NewQ4 2025
ORealty Income Corp$1.69M0.83%0.00%NewQ4 2025
GRALGRAIL, Inc.$1.54M0.76%0.04%NewQ4 2025
RTXRTX Corp$1.36M0.67%0.00%NewQ4 2025
INDBIndependent Bank Corp$1.26M0.62%0.03%NewQ4 2025
PLTRPalantir Technologies Inc.$1.19M0.59%0.00%NewQ4 2025
CCLCarnival Corp Ltd.$1.13M0.56%0.00%NewQ4 2025
CFGCitizens Financial Group Inc$1.02M0.50%0.00%NewQ4 2025
WMTWalmart Inc.$1.01M0.50%0.00%NewQ4 2025
GOOGAlphabet Inc.$968K0.48%Not reportedNewQ4 2025
VVisa Inc.$947K0.47%0.00%NewQ4 2025
CATCaterpillar Inc$934K0.46%0.00%NewQ4 2025
NGGNational Grid PLC$934K0.46%0.00%NewQ4 2025
KMIKinder Morgan, Inc.$848K0.42%0.00%NewQ4 2025
ASMLAsml Holding NV$760K0.37%0.00%NewQ4 2025
BACBank of America Corp$727K0.36%0.00%NewQ4 2025
STWDStarwood Property Trust, Inc.$634K0.31%0.01%NewQ4 2025
GEGeneral Electric Co$633K0.31%0.00%NewQ4 2025
BSVNBank7 Corp.$527K0.26%0.07%NewQ4 2025
AVGOBroadcom Inc.$523K0.26%0.00%NewQ4 2025
LYGLloyds Banking Group plc$499K0.25%0.00%NewQ4 2025
PRUPrudential Financial Inc$474K0.23%0.00%NewQ4 2025
LLYELI LILLY & Co$471K0.23%0.00%NewQ4 2025
BRK.BBerkshire Hathaway Inc$417K0.21%Not reportedNewQ4 2025
ENBEnbridge Inc$388K0.19%0.00%NewQ4 2025
JPMJPMorgan Chase & Co$360K0.18%0.00%NewQ4 2025
TSMTaiwan Semiconductor Manufacturing Co Ltd$356K0.17%0.00%NewQ4 2025
HDHome Depot, Inc.$307K0.15%0.00%NewQ4 2025
AMATApplied Materials Inc$300K0.15%0.00%NewQ4 2025
CCitigroup Inc$292K0.14%0.00%NewQ4 2025
NBISNebius Group N.V.$280K0.14%0.00%NewQ4 2025
JNJJohnson & Johnson$275K0.14%0.00%NewQ4 2025
COSTCostco Wholesale Corp$259K0.13%0.00%NewQ4 2025
MPLXMPLX LP$258K0.13%0.00%NewQ4 2025
DALDelta Air Lines, Inc.$243K0.12%0.00%NewQ4 2025
RIORio Tinto PLC$232K0.11%0.00%NewQ4 2025
CRWVCoreWeave, Inc.$226K0.11%Not reportedNewQ4 2025
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