Institution

Blair William & Co

13F for the quarter to June 30, 2026, filed August 11, 2026 · SEC CIK 902367

Reported value: $38.4bn
Positions we cover: 1,178
Copy, a year: +13.1%
Copy Sharpe ratio: 0.68

How copying its 13F would have done

CopyS&P 500 $10,000 copying Blair William & Co's filed holdings in companies we cover from August 9, 2013, buying on the first trading day after each 13F was filed and holding until the next, against the S&P 500 (total return). Marked weekly, log scale. Before costs and taxes; misses trading within each quarter and anything 13F does not show (shorts, cash, bonds, non-US holdings).

Biggest drop −32.9% (S&P 500 −31.8%); beta 1.04; alpha −1.0% a year (t = −0.70); last 12 months +5.1% against +12.1%.

Reported value by quarter

Blair William & Co: 13F reported value Total value of all positions in each quarter's 13F, as filed (values before 2023 were filed in thousands of dollars and are converted).

View chart data

Period	Reported value
2013-06-30	$50.6B
2013-09-30	$56.2B
2013-12-31	$60.5B
2014-03-31	$60.4B
2014-06-30	$61.2B
2014-09-30	$58.5B
2014-12-31	$61.8B
2015-03-31	$64.9B
2015-06-30	$66.8B
2015-09-30	$11.6B
2015-12-31	$10.6B
2016-03-31	$10.6B
2016-06-30	$10.7B
2016-09-30	$11.3B
2016-12-31	$11.2B
2017-03-31	$12.4B
2017-06-30	$13.3B
2017-09-30	$13.3B
2017-12-31	$14.7B
2018-03-31	$14.1B
2018-06-30	$14.7B
2018-09-30	$16.3B
2018-12-31	$13.7B
2019-03-31	$16.4B
2019-06-30	$17.4B
2019-09-30	$17.3B
2019-12-31	$19.4B
2020-03-31	$16B
2020-06-30	$20.9B
2020-09-30	$23.6B
2020-12-31	$27.2B
2021-03-31	$26.5B
2021-06-30	$28.8B
2021-09-30	$29.4B
2021-12-31	$31.9B
2022-03-31	$28.5B
2022-06-30	$22.5B
2022-09-30	$21.8B
2022-12-31	$23T
2023-03-31	$25B
2023-06-30	$27.3B
2023-09-30	$26.1B
2023-12-31	$29.3B
2024-03-31	$31.8B
2024-06-30	$32.4B
2024-09-30	$34B
2024-12-31	$34.4B
2025-03-31	$33.2B
2025-06-30	$36B
2025-09-30	$37.6B
2025-12-31	$37.3B
2026-03-31	$34.9B
2026-06-30	$38.4B

Holdings and moves

Company	Share of portfolio	Value	Shares	Change in shares
AAPLApple Inc.	4.32%	$1.7bn	5.73M	−3.4% Reduced
AMZNAmazon	3.65%	$1.4bn	5.88M	−3.0% Reduced
MSFTMicrosoft Corporation	3.35%	$1.3bn	3.44M	−1.6% Reduced
NVDANVIDIA Corporation	2.80%	$1.1bn	5.37M	−1.0% Reduced
GOOGLAlphabet Inc. (Class A)	2.24%	$858.6m	2.40M	−1.4% Reduced
GEVGE Vernova	2.02%	$775.0m	659.7K	−0.7% Reduced
JPMJPMorgan Chase	1.94%	$743.2m	2.27M	−1.6% Reduced
VVisa Inc.	1.65%	$631.8m	1.84M	−0.2%
COSTCostco	1.28%	$490.8m	524.7K	+0.7% Added
IDXXIdexx Laboratories	1.26%	$483.6m	918.6K	−2.9% Reduced
APHAmphenol	1.15%	$441.6m	2.50M	−0.6% Reduced
MAMastercard	1.13%	$432.6m	842.4K	−8.8% Reduced
PANWPalo Alto Networks	1.09%	$418.3m	1.23M	−6.0% Reduced
LLYLilly (Eli)	1.08%	$416.3m	347.1K	+7.1% Added
METAMeta Platforms	0.98%	$377.9m	670.9K	−7.0% Reduced
MUMicron Technology	0.95%	$364.6m	315.9K	−4.9% Reduced
FASTFastenal	0.93%	$355.8m	7.41M	+0.5%
AVGOBroadcom	0.92%	$351.2m	929.7K	+1.2% Added
ABBVAbbVie	0.84%	$324.1m	1.29M	−3.5% Reduced
BWXTBWX Technologies, Inc.	0.79%	$303.0m	1.56M	+8.2% Added
ANETArista Networks	0.71%	$272.6m	1.60M	+39.4% Added
WMTWalmart	0.67%	$257.2m	2.27M	−4.4% Reduced
HDThe Home Depot	0.64%	$246.0m	697.6K	−8.4% Reduced
JNJJohnson & Johnson	0.63%	$242.9m	956.3K	+0.1%
PEverpure	0.63%	$240.2m	3.05M	+4.5% Added
ECLEcolab	0.62%	$238.0m	854.3K	−1.4% Reduced
WSOWatsco Inc	0.61%	$235.0m	564.0K	−3.2% Reduced
AXPAmerican Express	0.60%	$230.1m	680.3K	−1.9% Reduced
PGRProgressive Corporation	0.59%	$225.9m	1.03M	−15.2% Reduced
NOWServiceNow	0.58%	$222.4m	2.24M	+24.4% Added
TDGTransDigm Group	0.57%	$219.7m	165.0K	−0.8% Reduced
SYKStryker Corporation	0.56%	$215.5m	684.4K	−19.3% Reduced
CRWDCrowdStrike	0.54%	$207.8m	272.2K	+7.9% Added
UBERUber	0.53%	$201.7m	2.79M	−15.3% Reduced
AAONAAON, Inc.	0.51%	$194.5m	1.53M	−5.5% Reduced
BABoeing	0.49%	$190.1m	878.4K	−4.7% Reduced
DHRDanaher Corporation	0.48%	$185.0m	971.1K	−25.1% Reduced
CTASCintas	0.47%	$180.9m	1.06M	+9.2% Added
PWRQuanta Services	0.42%	$161.8m	224.7K	−0.5% Reduced
ISRGIntuitive Surgical	0.41%	$158.1m	397.6K	−6.5% Reduced
MRVLMarvell Technology	0.41%	$158.0m	530.5K	−26.7% Reduced
ICEIntercontinental Exchange	0.41%	$158.0m	1.28M	−19.4% Reduced
GSGoldman Sachs	0.39%	$148.9m	147.2K	−5.8% Reduced
CWCurtiss Wright Corp	0.37%	$140.6m	185.6K	+11.1% Added
ROKRockwell Automation	0.36%	$139.8m	282.3K	−0.6% Reduced
IBMIBM	0.36%	$136.7m	486.0K	−6.3% Reduced
AMDAdvanced Micro Devices	0.36%	$136.6m	235.2K	+16.5% Added
VEEVVeeva Systems Inc	0.35%	$133.3m	750.8K	−29.7% Reduced
UNPUnion Pacific Corporation	0.35%	$132.7m	487.8K	−5.3% Reduced
PGProcter & Gamble	0.34%	$130.2m	888.1K	−0.7% Reduced
CATCaterpillar Inc.	0.34%	$129.4m	121.5K	+2.5% Added
HEIHeico Corp	0.33%	$127.4m	357.7K	+6.2% Added
LINLinde plc	0.31%	$120.6m	232.3K	−0.4%
CVXChevron Corporation	0.31%	$120.5m	727.1K	+1.6% Added
AONAon plc	0.31%	$119.6m	360.6K	−14.5% Reduced
BXBlackstone Inc.	0.31%	$119.0m	1.01M	−14.2% Reduced
MRKMerck & Co.	0.31%	$118.3m	920.7K	+2.1% Added
LYVLive Nation Entertainment	0.30%	$115.0m	628.0K	−5.1% Reduced
TSLATesla, Inc.	0.30%	$114.9m	273.2K	−7.7% Reduced
KOThe Coca-Cola Company	0.30%	$113.5m	1.40M	−1.3% Reduced
DXCMDexcom	0.29%	$112.2m	1.67M	−13.6% Reduced
WMWaste Management	0.28%	$109.5m	491.3K	+1.5% Added
AMEAmetek	0.28%	$105.5m	436.2K	−4.6% Reduced
JLLJones Lang Lasalle Inc	0.28%	$105.5m	340.4K	+0.9% Added
HONHoneywell Technologies	0.27%	$101.7m	454.4K	New
CSCOCisco	0.26%	$100.7m	857.6K	+4.1% Added
HONAHoneywell Aerospace	0.26%	$100.4m	454.1K	New
GDGeneral Dynamics	0.26%	$98.8m	278.9K	−4.5% Reduced
ORLYO'Reilly Automotive	0.25%	$97.1m	1.05M	−4.6% Reduced
ITWIllinois Tool Works	0.25%	$97.1m	358.8K	−0.4%
DEDeere & Company	0.25%	$96.9m	152.8K	+3.5% Added
SBUXStarbucks	0.25%	$96.7m	945.9K	+0.8% Added
ABTAbbott Laboratories	0.25%	$96.5m	1.06M	−19.9% Reduced
GNRCGenerac	0.25%	$95.3m	325.4K	−6.2% Reduced
MCDMcDonald's	0.24%	$91.9m	340.1K	−2.3% Reduced
NFLXNetflix	0.24%	$91.8m	1.29M	−27.1% Reduced
TSMTaiwan Semiconductor Manufacturing Co LTD	0.24%	$91.5m	191.7K	+39.1% Added
GWREGuidewire Software, Inc.	0.23%	$89.4m	726.4K	−25.5% Reduced
KLACKLA Corporation	0.23%	$87.0m	288.4K	+799.0% Added
QCOMQualcomm	0.23%	$86.6m	468.9K	−3.7% Reduced
GEGE Aerospace	0.21%	$80.3m	214.9K	+6.6% Added
FANGDiamondback Energy	0.21%	$80.3m	456.6K	+2.5% Added
TMOThermo Fisher Scientific	0.21%	$80.2m	160.0K	−7.5% Reduced
TWLOTwilio Inc	0.20%	$77.7m	376.4K	+64.6% Added
RTXRTX Corporation	0.20%	$75.9m	400.2K	+4.1% Added
GWWW. W. Grainger	0.19%	$74.0m	54.4K	−0.1%
WABWabtec	0.19%	$72.5m	268.7K	−5.3% Reduced
PEPPepsiCo	0.19%	$72.3m	533.9K	−2.3% Reduced
ULSUL Solutions Inc.	0.18%	$70.7m	693.7K	−4.4% Reduced
MDBMongodb, Inc.	0.18%	$70.0m	208.4K	−23.1% Reduced
AMTAmerican Tower	0.18%	$68.9m	421.3K	−10.4% Reduced
BACBank of America	0.18%	$68.6m	1.20M	+15.6% Added
SCHWCharles Schwab Corporation	0.18%	$68.2m	739.2K	−17.0% Reduced
AXONAxon Enterprise	0.18%	$67.4m	120.3K	+13.8% Added
GLWCorning Inc.	0.17%	$65.8m	257.5K	−11.5% Reduced
MIAXMiami International Holdings, Inc.	0.17%	$65.8m	1.77M	+165.8% Added
DOCNDigitalocean Holdings, Inc.	0.17%	$64.9m	413.1K	−3.1% Reduced
IRTCIrhythm Holdings, Inc.	0.16%	$62.4m	524.7K	−16.5% Reduced
APPApplovin Corp	0.16%	$62.2m	120.8K	−13.7% Reduced
ROLRollins, Inc.	0.16%	$61.6m	1.48M	−34.8% Reduced
ASMLAsml Holding NV	0.16%	$61.5m	30.9K	+149.0% Added
RBARB Global Inc.	0.16%	$61.3m	526.6K	−7.7% Reduced
CPRTCopart	0.16%	$60.7m	2.15M	−47.1% Reduced
TJXTJX Companies	0.16%	$59.8m	394.9K	+0.1%
SHOPShopify Inc.	0.15%	$59.6m	521.9K	−16.8% Reduced
MCKMcKesson	0.15%	$58.9m	77.9K	−2.7% Reduced
NDAQNasdaq, Inc.	0.15%	$58.8m	745.4K	−27.3% Reduced
AMATApplied Materials	0.15%	$57.8m	80.0K	+1.0% Added
ALLAllstate	0.15%	$57.4m	241.2K	−6.8% Reduced
BLKBlackRock	0.15%	$56.7m	59.0K	−0.5%
MSIMotorola Solutions	0.14%	$54.7m	131.8K	+7.4% Added
AMGNAmgen	0.14%	$54.6m	150.8K	−3.3% Reduced
EPDEnterprise Products Partners L.p.	0.14%	$53.5m	1.45M	0.0%
MCHPMicrochip Technology Inc	0.14%	$52.9m	579.9K	−1.7% Reduced
EMREmerson Electric	0.13%	$50.7m	354.5K	−9.1% Reduced
TXNTexas Instruments	0.13%	$50.6m	169.8K	+0.8% Added
ADPAutomatic Data Processing	0.13%	$50.4m	225.2K	−1.3% Reduced
PMPhilip Morris International	0.13%	$48.8m	269.6K	+12.9% Added
INTCIntel	0.13%	$48.1m	344.6K	−3.5% Reduced
ATIATI Inc	0.12%	$45.7m	231.9K	−2.1% Reduced
MDLZMondelez International	0.12%	$44.9m	776.1K	−3.3% Reduced
ORCLOracle Corporation	0.12%	$44.8m	305.6K	−13.0% Reduced
VRTVertiv	0.12%	$44.5m	132.8K	+6.5% Added
NETCloudflare, Inc.	0.11%	$43.2m	176.2K	+3.6% Added
NEENextEra Energy	0.11%	$43.1m	490.9K	+0.9% Added
TYLTyler Technologies Inc	0.11%	$42.9m	146.8K	−35.4% Reduced
MSMorgan Stanley	0.11%	$42.3m	202.6K	+29.7% Added
ZTSZoetis	0.11%	$42.0m	583.9K	−26.6% Reduced
MPWRMonolithic Power Systems, Inc.	0.11%	$41.8m	30.3K	−1.0% Reduced
SIMOSilicon Motion Technology Corp	0.11%	$41.7m	125.2K	+21.3% Added
LOWLowe's	0.11%	$41.7m	188.9K	−26.3% Reduced
CRMSalesforce	0.10%	$40.1m	256.3K	−34.1% Reduced
ROPRoper Technologies	0.10%	$40.1m	118.6K	−2.3% Reduced
SPGIS&P Global	0.10%	$39.6m	97.3K	−32.0% Reduced
TOSTToast, Inc.	0.10%	$39.1m	1.41M	−8.7% Reduced
ETNEaton Corporation	0.10%	$39.0m	91.5K	+13.5% Added
CMICummins	0.10%	$38.8m	54.4K	+7.7% Added
DOVDover Corporation	0.10%	$37.0m	164.9K	−1.4% Reduced
MODModine Manufacturing Co	0.10%	$36.4m	136.2K	+66.5% Added
FERGFerguson Enterprises	0.10%	$36.3m	153.0K	+3.9% Added
TECHBio-Techne	0.10%	$36.3m	513.6K	−40.6% Reduced
SXIStandex International Corp	0.09%	$36.2m	101.2K	+477.2% Added
PSXPhillips 66	0.09%	$34.5m	204.1K	−1.4% Reduced
WFCWells Fargo	0.09%	$34.5m	417.3K	−10.7% Reduced
GILDGilead Sciences	0.09%	$34.5m	272.9K	−19.8% Reduced
PFEPfizer	0.09%	$33.9m	1.41M	+2.6% Added
DISThe Walt Disney Company	0.09%	$33.8m	351.6K	+2.4% Added
BCPCBalchem Corp	0.09%	$33.4m	197.9K	−2.7% Reduced
SPXCSPX Technologies, Inc.	0.09%	$33.1m	135.0K	−0.7% Reduced
FNVFranco Nevada Corp	0.09%	$32.6m	156.2K	−1.3% Reduced

Company	Bought (value)	Shares
HONHoneywell Technologies	$101.7m	454.4K
HONAHoneywell Aerospace	$100.4m	454.1K
KLACKLA Corporation	$77.3m	256.3K
ANETArista Networks	$77.0m	453.5K
NOWServiceNow	$43.6m	439.0K
MIAXMiami International Holdings, Inc.	$41.0m	1.10M
ASMLAsml Holding NV	$36.8m	18.5K
TWLOTwilio Inc	$30.5m	147.7K
SXIStandex International Corp	$29.9m	83.7K
LLYLilly (Eli)	$27.7m	23.1K
TSMTaiwan Semiconductor Manufacturing Co LTD	$25.7m	53.9K
BWXTBWX Technologies, Inc.	$23.0m	118.3K
TTANServicetitan, Inc.	$21.6m	306.0K
TWSTTwist Bioscience Corp	$20.5m	199.1K
AMDAdvanced Micro Devices	$19.3m	33.3K

Change in shares on the previous quarter's 13F, valued at this quarter's reported price.

Company	Sold (value)	Shares
DHRDanaher Corporation	−$62.0m	−325.7K
AAPLApple Inc.	−$57.7m	−199.4K
MRVLMarvell Technology	−$57.6m	−193.4K
VEEVVeeva Systems Inc	−$56.2m	−316.7K
CPRTCopart	−$54.1m	−1.92M
SYKStryker Corporation	−$51.4m	−163.3K
VRSKVerisk Analytics, Inc.	−$49.7m	−276.7K
AMZNAmazon	−$43.6m	−182.8K
RYANRyan Specialty Holdings, Inc.	−$42.8m	−1.13M
MAMastercard	−$41.6m	−81.1K
PGRProgressive Corporation	−$40.6m	−185.6K
ICEIntercontinental Exchange	−$38.1m	−309.9K
UBERUber	−$36.4m	−505.0K
NFLXNetflix	−$34.1m	−478.0K
ROLRollins, Inc.	−$32.9m	−788.3K

Change in shares on the previous quarter's 13F, valued at this quarter's reported price.

Company	Value last quarter	Shares
HURNHuron Consulting Group Inc.	$6.6m	51.4K
PBHPrestige Consumer Healthcare Inc.	$6.3m	106.5K
EXPOExponent Inc	$1.9m	28.8K
RLIRLI Corp	$1.8m	31.6K
OSISOSI Systems Inc	$1.5m	5.5K
ALHCAlignment Healthcare, Inc.	$747,969	42.5K
ALRMAlarm.com Holdings, Inc.	$521,131	12.1K
RYAAYRyanair Holdings PLC	$502,068	8.7K
FCFSFirstcash Holdings, Inc.	$486,653	2.6K
ELANElanco Animal Health Inc	$434,698	18.2K
GATXGatx Corp	$408,909	2.4K
BLBlackline, Inc.	$391,201	10.6K
BNSBank Of Nova Scotia	$341,104	4.9K
PLXSPlexus Corp	$333,381	1.6K
OVVOvintiv Inc.	$326,827	5.5K
AROCArchrock, Inc.	$316,528	9.1K
SSBSouthstate Bank Corp	$315,678	3.4K
SYBTStock Yards Bancorp, Inc.	$303,940	4.6K
FLUTFlutter Entertainment plc	$299,121	2.9K
FELEFranklin Electric Co Inc	$277,184	3.0K
INSPInspire Medical Systems, Inc.	$267,649	5.2K
CUZCousins Properties Inc	$263,830	11.7K
NPNeptune Insurance Holdings Inc.	$253,995	10.5K
AIIAmerican Integrity Insurance Group, Inc.	$245,379	12.7K
CBTCabot Corp	$239,920	3.2K
EPRTEssential Properties Realty Trust, Inc.	$231,950	7.6K
UHSUniversal Health Services	$220,518	1.2K
SAMBoston Beer Co Inc	$220,262	956
KBHKB Home	$219,317	4.2K
LOPEGrand Canyon Education, Inc.	$210,157	1.2K

Technology30.8%
Industrials20.5%
Financials13.4%
Health Care11.7%
Consumer Discretionary8.3%
Communication Services5.3%
Consumer Staples4.5%
Materials2.1%
Energy1.7%
Real Estate1.1%
Utilities0.5%

Share of the value held in companies we cover, by sector.

Period	Copy, a year	S&P 500	Sharpe	S&P 500	Biggest drop	Beta
Whole backtestAugust 9, 2013 to November 2, 2026	+13.1%	+13.9%	0.68	0.77	−32.9%	1.04
2018 onwardsJanuary 5, 2018 to November 2, 2026	+12.5%	+13.9%	0.56	0.66	−32.9%	1.04
Last three yearsNovember 3, 2023 to November 2, 2026	+14.0%	+21.8%	0.70	1.16	−16.2%	0.94
Last yearNovember 7, 2025 to November 2, 2026	+6.8%	+14.2%	0.28	0.84	−12.2%	0.90

From SEC Form 13F data sets. A 13F lists long positions in US-listed shares at the quarter's end, filed up to 45 days later; it does not show shorts, cash, bonds, non-US holdings or trades within the quarter. Positions in companies outside our coverage are not listed here. Research, not investment advice.