Blair William & Co

13F filer · CIK 0000902367

Reported Aug 11, 2026

Net seller this quarter

13F portfolio value$38.4BU.S. long equity reported on 13F

Positions1,320138 new · 69 closed

Net flow last quarter-$947MBuys minus sells

Top 10 positions weight26.3%Concentration

Holdings

13F · last 4 quarters free

Scroll for earlier quarters

Company	Value	% of portfolio	% of company	POSITION CHANGE qoq %	First reported
Q2 2026Reported Aug 11, 20261,320 positions
AAPLApple Inc.	$1.66B	4.32%	0.04%	-3.4%	Q2 2013
AMZNAmazon Com Inc	$1.4B	3.65%	0.05%	-3.0%	Q2 2013
MSFTMicrosoft Corp	$1.28B	3.35%	0.05%	-1.6%	Q2 2013
NVDANvidia Corp	$1.08B	2.80%	0.02%	-1.0%	Q1 2016
GOOGAlphabet Inc.	$1.04B	2.72%	Not reported	-2.7%	Q4 2015
GOOGLAlphabet Inc.	$859M	2.24%	0.02%	-1.4%	Q4 2015
GEVGE Vernova Inc.	$775M	2.02%	0.25%	-0.7%	Q2 2024
JPMJPMorgan Chase & Co	$743M	1.94%	0.09%	-1.6%	Q2 2013
SPYSPDR S&P 500 ETF Trust	$633M	1.65%	Not reported	+0.3%	Q2 2013
VVisa Inc.	$632M	1.65%	0.10%	-0.2%	Q2 2013
COSTCostco Wholesale Corp	$491M	1.28%	0.12%	+0.7%	Q2 2013
IDXXIdexx Laboratories Inc	$484M	1.26%	1.16%	-2.9%	Q2 2013
APHAmphenol Corp	$442M	1.15%	0.20%	-0.6%	Q2 2013
MAMastercard Inc	$433M	1.13%	0.07%	-8.8%	Q2 2013
PANWPalo Alto Networks Inc	$418M	1.09%	0.15%	-6.0%	Q2 2013
LLYELI LILLY & Co	$416M	1.08%	0.04%	+7.1%	Q2 2013
METAMeta Platforms, Inc.	$378M	0.98%	Not reported	-7.0%	Q2 2013
MUMicron Technology Inc	$365M	0.95%	0.03%	-5.0%	Q2 2013
FASTFastenal Co	$356M	0.93%	0.65%	+0.5%	Q2 2013
AVGOBroadcom Inc.	$351M	0.91%	0.02%	+1.2%	Q2 2016
ABBVAbbVie Inc.	$324M	0.84%	0.07%	-3.5%	Q2 2013
BWXTBWX Technologies, Inc.	$303M	0.79%	1.70%	+8.2%	Q3 2016
ANETArista Networks, Inc.	$273M	0.71%	0.13%	+39.4%	Q3 2016
QQQInvesco QQQ Trust, Series 1	$265M	0.69%	Not reported	+15.5%	Q2 2018
WMTWalmart Inc.	$257M	0.67%	0.03%	-4.4%	Q2 2013
HDHome Depot, Inc.	$246M	0.64%	0.07%	-8.4%	Q2 2013
JNJJohnson & Johnson	$243M	0.63%	0.04%	+0.1%	Q2 2013
BRK.BBerkshire Hathaway Inc	$242M	0.63%	Not reported	-2.4%	Q2 2013
PEverpure, Inc.	$240M	0.63%	0.92%	+4.5%	Q1 2016
ECLEcolab Inc.	$238M	0.62%	0.30%	-1.4%	Q2 2013
WSOWatsco Inc	$235M	0.61%	Not reported	-3.2%	Q2 2013
AXPAmerican Express Co	$230M	0.60%	0.10%	-1.9%	Q2 2013
PGRProgressive Corp	$226M	0.59%	0.18%	-15.2%	Q2 2013
NOWServiceNow, Inc.	$222M	0.58%	0.22%	+24.4%	Q4 2014
TDGTransDigm Group INC	$220M	0.57%	0.29%	-0.8%	Q2 2013
SYKStryker Corp	$215M	0.56%	0.18%	-19.3%	Q2 2013
CRWDCrowdStrike Holdings, Inc.	$208M	0.54%	0.11%	+7.9%	Q3 2019
UBERUber Technologies, Inc	$202M	0.53%	0.14%	-15.3%	Q2 2019
AAONAaon, Inc.	$195M	0.51%	1.86%	-5.5%	Q2 2024
BABoeing Co	$190M	0.50%	0.11%	-4.7%	Q2 2013
DHRDanaher Corp	$185M	0.48%	0.14%	-25.1%	Q2 2013
CTASCintas Corp	$181M	0.47%	0.27%	+9.2%	Q2 2013
PWRQuanta Services, Inc.	$162M	0.42%	0.15%	-0.5%	Q2 2016
ISRGIntuitive Surgical Inc	$158M	0.41%	0.11%	-6.5%	Q2 2013
MRVLMarvell Technology, Inc.	$158M	0.41%	0.06%	-26.7%	Q3 2018
ICEIntercontinental Exchange, Inc.	$158M	0.41%	0.23%	-19.4%	Q2 2013
GSGoldman Sachs Group Inc	$149M	0.39%	0.05%	-5.8%	Q2 2013
CWCurtiss Wright Corp	$141M	0.37%	0.50%	+11.1%	Q3 2013
ROKRockwell Automation, Inc	$140M	0.36%	0.25%	-0.6%	Q2 2013
RBCRBC Bearings INC	$139M	0.36%	0.66%	-0.9%	Q3 2013

Q1 2026Reported May 8, 20261,249 positions
AAPLApple Inc.	$1.51B	4.31%	0.04%	-0.3%	Q2 2013
MSFTMicrosoft Corp	$1.29B	3.71%	0.05%	-2.1%	Q2 2013
AMZNAmazon Com Inc	$1.26B	3.62%	0.06%	-0.1%	Q2 2013
NVDANvidia Corp	$947M	2.71%	0.02%	-1.2%	Q1 2016
GOOGAlphabet Inc.	$871M	2.50%	Not reported	-2.7%	Q4 2015
GOOGLAlphabet Inc.	$701M	2.01%	0.02%	-2.3%	Q4 2015
JPMJPMorgan Chase & Co	$679M	1.94%	0.09%	-0.1%	Q2 2013
GEVGE Vernova Inc.	$580M	1.66%	0.25%	+1.9%	Q2 2024
VVisa Inc.	$558M	1.60%	0.10%	-4.4%	Q2 2013
SPYSPDR S&P 500 ETF Trust	$550M	1.58%	Not reported	-1.5%	Q2 2013
IDXXIdexx Laboratories Inc	$532M	1.52%	1.19%	-5.5%	Q2 2013
COSTCostco Wholesale Corp	$519M	1.49%	0.12%	0.0%	Q2 2013
MAMastercard Inc	$461M	1.32%	0.08%	-3.3%	Q2 2013
METAMeta Platforms, Inc.	$413M	1.18%	Not reported	-2.0%	Q2 2013
FASTFastenal Co	$342M	0.98%	0.64%	+5.1%	Q2 2013
APHAmphenol Corp	$318M	0.91%	0.21%	-5.0%	Q2 2013
LLYELI LILLY & Co	$298M	0.85%	0.03%	-0.2%	Q2 2013
WMTWalmart Inc.	$295M	0.85%	0.03%	-1.6%	Q2 2013
BWXTBWX Technologies, Inc.	$294M	0.84%	1.57%	-0.1%	Q3 2016
ABBVAbbVie Inc.	$290M	0.83%	0.08%	-0.3%	Q2 2013
AVGOBroadcom Inc.	$284M	0.81%	0.02%	+2.4%	Q2 2016
SYKStryker Corp	$279M	0.80%	0.22%	+0.3%	Q2 2013
ICEIntercontinental Exchange, Inc.	$251M	0.72%	0.28%	-5.7%	Q2 2013
HDHome Depot, Inc.	$250M	0.72%	0.08%	+0.7%	Q2 2013
DHRDanaher Corp	$246M	0.70%	0.18%	-5.5%	Q2 2013
PGRProgressive Corp	$242M	0.69%	0.21%	-13.3%	Q2 2013
BRK.BBerkshire Hathaway Inc	$237M	0.68%	Not reported	+10.8%	Q2 2013
UBERUber Technologies, Inc	$237M	0.68%	0.16%	-19.7%	Q2 2019
JNJJohnson & Johnson	$234M	0.67%	0.04%	+0.6%	Q2 2013
ECLEcolab Inc.	$230M	0.66%	0.31%	+1.0%	Q2 2013
WSOWatsco Inc	$212M	0.61%	Not reported	-13.7%	Q2 2013
AXPAmerican Express Co	$210M	0.60%	0.10%	-0.9%	Q2 2013
PANWPalo Alto Networks Inc	$209M	0.60%	0.16%	+4.4%	Q2 2013
ISRGIntuitive Surgical Inc	$196M	0.56%	0.12%	-3.2%	Q2 2013
TDGTransDigm Group INC	$193M	0.55%	0.29%	-2.3%	Q2 2013
NOWServiceNow, Inc.	$188M	0.54%	0.17%	-18.7%	Q4 2014
VEEVVeeva Systems Inc	$188M	0.54%	0.65%	-13.1%	Q1 2015
BABoeing Co	$184M	0.53%	0.12%	+35.9%	Q2 2013
QQQInvesco QQQ Trust, Series 1	$180M	0.51%	Not reported	+10.6%	Q2 2018
PEverpure, Inc.	$172M	0.49%	0.88%	-4.4%	Q1 2016
NFLXNetflix Inc	$170M	0.49%	0.04%	+17.9%	Q3 2013
GLDSPDR Gold Trust	$166M	0.48%	0.10%	+51.5%	Q2 2013
CTASCintas Corp	$165M	0.47%	0.24%	-2.2%	Q2 2013
XOMExxonMobil Holdings Corp	$161M	0.46%	0.02%	-2.3%	Q2 2013
CVXChevron Corp	$148M	0.42%	0.04%	+7.4%	Q2 2013
GWREGuidewire Software, Inc.	$146M	0.42%	1.15%	-14.0%	Q2 2013
ANETArista Networks, Inc.	$141M	0.41%	0.09%	+2.4%	Q3 2016
ABTAbbott Laboratories	$136M	0.39%	0.08%	-15.9%	Q2 2013
AONAon plc	$136M	0.39%	0.20%	-15.1%	Q4 2015
BXBlackstone Inc.	$136M	0.39%	0.16%	-13.9%	Q2 2013

Q4 2025Reported Feb 17, 20261,217 positions
MSFTMicrosoft Corp	$1.73B	4.64%	0.05%	-0.9%	Q2 2013
AAPLApple Inc.	$1.62B	4.34%	0.04%	-0.7%	Q2 2013
AMZNAmazon Com Inc	$1.4B	3.76%	0.06%	+1.0%	Q2 2013
NVDANvidia Corp	$1.02B	2.75%	0.02%	-2.7%	Q1 2016
GOOGAlphabet Inc.	$979M	2.63%	Not reported	-0.9%	Q4 2015
GOOGLAlphabet Inc.	$780M	2.09%	0.02%	-1.3%	Q4 2015
JPMJPMorgan Chase & Co	$744M	2.00%	0.09%	+0.1%	Q2 2013
IDXXIdexx Laboratories Inc	$677M	1.82%	1.26%	-3.0%	Q2 2013
VVisa Inc.	$677M	1.82%	0.10%	-1.7%	Q2 2013
SPYSPDR S&P 500 ETF Trust	$585M	1.57%	Not reported	-0.2%	Q2 2013
MAMastercard Inc	$545M	1.46%	0.08%	-2.2%	Q2 2013
METAMeta Platforms, Inc.	$486M	1.30%	Not reported	+8.5%	Q2 2013
COSTCostco Wholesale Corp	$449M	1.21%	0.12%	-5.5%	Q2 2013
GEVGE Vernova Inc.	$426M	1.14%	0.24%	+3.9%	Q2 2024
APHAmphenol Corp	$359M	0.96%	0.22%	-3.6%	Q2 2013
LLYELI LILLY & Co	$349M	0.94%	0.03%	+8.4%	Q2 2013
NOWServiceNow, Inc.	$339M	0.91%	0.21%	+11.0%	Q4 2014
UBERUber Technologies, Inc	$336M	0.90%	0.20%	-3.3%	Q2 2019
PGRProgressive Corp	$320M	0.86%	0.24%	-2.2%	Q2 2013
DHRDanaher Corp	$314M	0.84%	0.19%	+0.5%	Q2 2013
AVGOBroadcom Inc.	$310M	0.83%	0.02%	+0.8%	Q2 2016
ABBVAbbVie Inc.	$306M	0.82%	0.08%	+5.9%	Q2 2013
SYKStryker Corp	$297M	0.80%	0.22%	-8.1%	Q2 2013
FASTFastenal Co	$281M	0.76%	0.61%	+0.7%	Q2 2013
VEEVVeeva Systems Inc	$274M	0.74%	0.75%	-4.7%	Q1 2015
ICEIntercontinental Exchange, Inc.	$274M	0.73%	0.30%	-2.3%	Q2 2013
WMTWalmart Inc.	$269M	0.72%	0.03%	+0.3%	Q2 2013
HDHome Depot, Inc.	$260M	0.70%	0.08%	-1.3%	Q2 2013
AXPAmerican Express Co	$259M	0.70%	0.10%	-0.5%	Q2 2013
ISRGIntuitive Surgical Inc	$249M	0.67%	0.12%	-4.1%	Q2 2013
BWXTBWX Technologies, Inc.	$249M	0.67%	1.57%	+20.9%	Q3 2016
PANWPalo Alto Networks Inc	$230M	0.62%	0.18%	+1.0%	Q2 2013
GWREGuidewire Software, Inc.	$228M	0.61%	1.33%	-2.0%	Q2 2013
WSOWatsco Inc	$228M	0.61%	Not reported	-15.6%	Q2 2013
TDGTransDigm Group INC	$226M	0.61%	0.30%	-1.4%	Q2 2013
ECLEcolab Inc.	$225M	0.60%	0.30%	+8.0%	Q2 2013
BRK.BBerkshire Hathaway Inc	$225M	0.60%	Not reported	+0.4%	Q2 2013
BXBlackstone Inc.	$211M	0.57%	0.18%	+0.5%	Q2 2013
PEverpure, Inc.	$205M	0.55%	0.92%	-1.0%	Q1 2016
APPAppLovin Corp	$198M	0.53%	0.09%	-6.9%	Q3 2021
ABTAbbott Laboratories	$198M	0.53%	0.09%	-1.3%	Q2 2013
JNJJohnson & Johnson	$197M	0.53%	0.04%	+0.1%	Q2 2013
TYLTyler Technologies Inc	$187M	0.50%	0.86%	-2.8%	Q2 2014
CTASCintas Corp	$187M	0.50%	0.25%	-1.1%	Q2 2013
WDAYWorkday, Inc.	$178M	0.48%	0.38%	-6.1%	Q2 2013
AONAon plc	$175M	0.47%	0.23%	-6.3%	Q4 2015
CPRTCopart Inc	$173M	0.46%	0.46%	-6.8%	Q2 2013
QQQInvesco QQQ Trust, Series 1	$173M	0.46%	Not reported	+5.9%	Q2 2018
INTUIntuit Inc.	$162M	0.43%	0.09%	-2.6%	Q2 2013
ANETArista Networks, Inc.	$147M	0.40%	0.09%	+1.1%	Q3 2016

Q3 2025Reported Nov 12, 20251,205 positions
MSFTMicrosoft Corp	$1.87B	4.97%	0.05%	-2.4%	Q2 2013
AAPLApple Inc.	$1.53B	4.06%	0.04%	-0.6%	Q2 2013
AMZNAmazon Com Inc	$1.32B	3.51%	0.06%	-1.9%	Q2 2013
NVDANvidia Corp	$1.05B	2.80%	0.02%	+0.8%	Q1 2016
GOOGAlphabet Inc.	$766M	2.04%	Not reported	-1.1%	Q4 2015
JPMJPMorgan Chase & Co	$728M	1.94%	0.08%	-1.0%	Q2 2013
VVisa Inc.	$670M	1.78%	0.10%	-5.3%	Q2 2013
IDXXIdexx Laboratories Inc	$659M	1.75%	1.29%	-4.5%	Q2 2013
GOOGLAlphabet Inc.	$614M	1.63%	0.02%	0.0%	Q4 2015
SPYSPDR S&P 500 ETF Trust	$572M	1.52%	Not reported	0.0%	Q2 2013
MAMastercard Inc	$555M	1.48%	0.08%	-3.1%	Q2 2013
COSTCostco Wholesale Corp	$511M	1.36%	0.12%	-0.1%	Q2 2013
METAMeta Platforms, Inc.	$499M	1.33%	Not reported	+17.7%	Q2 2013
UBERUber Technologies, Inc	$416M	1.11%	0.20%	-1.8%	Q2 2019
GEVGE Vernova Inc.	$386M	1.03%	0.23%	-0.7%	Q2 2024
VEEVVeeva Systems Inc	$384M	1.02%	0.79%	+0.3%	Q1 2015
NOWServiceNow, Inc.	$367M	0.98%	0.19%	+21.8%	Q4 2014
PGRProgressive Corp	$355M	0.95%	0.25%	-4.4%	Q2 2013
FASTFastenal Co	$342M	0.91%	0.61%	+2.1%	Q2 2013
APHAmphenol Corp	$340M	0.91%	0.23%	-7.4%	Q2 2013
SYKStryker Corp	$340M	0.90%	0.24%	-0.5%	Q2 2013
WSOWatsco Inc	$323M	0.86%	Not reported	-0.8%	Q2 2013
HDHome Depot, Inc.	$310M	0.83%	0.08%	+0.9%	Q2 2013
AVGOBroadcom Inc.	$294M	0.78%	0.02%	-4.8%	Q2 2016
ABBVAbbVie Inc.	$293M	0.78%	0.07%	+0.5%	Q2 2013
ICEIntercontinental Exchange, Inc.	$291M	0.78%	0.30%	-1.3%	Q2 2013
DHRDanaher Corp	$271M	0.72%	0.19%	-0.7%	Q2 2013
GWREGuidewire Software, Inc.	$266M	0.71%	1.37%	-1.4%	Q2 2013
CSGPCostar Group, Inc.	$264M	0.70%	0.74%	+9.0%	Q2 2013
PEverpure, Inc.	$259M	0.69%	0.94%	-1.3%	Q1 2016
PANWPalo Alto Networks Inc	$252M	0.67%	0.19%	+6.9%	Q2 2013
FISVFiserv Inc	$249M	0.66%	0.36%	-8.2%	Q2 2013
WMTWalmart Inc.	$248M	0.66%	0.03%	-1.2%	Q2 2013
AXPAmerican Express Co	$234M	0.62%	0.10%	+3.7%	Q2 2013
BXBlackstone Inc.	$233M	0.62%	0.18%	+0.4%	Q2 2013
LLYELI LILLY & Co	$229M	0.61%	0.03%	-1.6%	Q2 2013
TDGTransDigm Group INC	$228M	0.61%	0.31%	-0.2%	Q2 2013
APPAppLovin Corp	$227M	0.61%	0.09%	+106.6%	Q3 2021
BRK.BBerkshire Hathaway Inc	$224M	0.60%	Not reported	+0.6%	Q2 2013
TYLTyler Technologies Inc	$222M	0.59%	0.88%	0.0%	Q2 2014
BWXTBWX Technologies, Inc.	$220M	0.58%	1.30%	+18.7%	Q3 2016
ECLEcolab Inc.	$217M	0.58%	0.28%	-1.4%	Q2 2013
ABTAbbott Laboratories	$214M	0.57%	0.09%	-0.3%	Q2 2013
CPRTCopart Inc	$213M	0.57%	0.49%	-6.8%	Q2 2013
WDAYWorkday, Inc.	$213M	0.57%	0.40%	-17.3%	Q2 2013
CTASCintas Corp	$206M	0.55%	0.25%	-0.9%	Q2 2013
ISRGIntuitive Surgical Inc	$205M	0.55%	0.13%	-1.7%	Q2 2013
ZTSZoetis Inc.	$199M	0.53%	0.31%	-16.5%	Q2 2013
AONAon plc	$189M	0.50%	0.25%	-6.7%	Q4 2015
NFLXNetflix Inc	$179M	0.48%	0.04%	-0.7%	Q3 2013

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