Institutional manager
BLAIR WILLIAM & CO/IL
Holds positions in 453 of the S&P 500, worth $25.9bn as reported for the quarter ended 31-mar-2026.
Positions held453of 488 index companies covered
Reported value$25.9bnS&P 500 positions only
Top ten weight38%how concentrated the book is
Filing entities1single filer
Largest positions
The 60 biggest by reported value, of 453 held. The rest are smaller than every one of these.
Alphabet Inc. (Class A)GOOGL5.5m$1.57bnCommunication ServicesApple Inc.AAPL5.9m$1.51bnInformation TechnologyMicrosoftMSFT3.5m$1.29bnInformation TechnologyAmazonAMZN6.1m$1.26bnConsumer DiscretionaryNvidiaNVDA5.4m$947mInformation TechnologyState Street CorporationSTT4.3m$805mFinancialsJPMorgan ChaseJPM2.3m$679mFinancialsGE VernovaGEV664,603$580mIndustrialsVisa Inc.V1.8m$558mFinancialsIdexx LaboratoriesIDXX946,336$532mHealth CareCostcoCOST521,277$519mConsumer StaplesMastercardMA923,405$461mFinancialsMeta PlatformsMETA721,720$413mCommunication ServicesFastenalFAST7.4m$342mIndustrialsAmphenolAPH2.5m$318mInformation TechnologyLilly (Eli)LLY324,018$298mHealth CareWalmartWMT2.4m$295mConsumer StaplesAbbVieABBV1.3m$290mHealth CareBroadcomAVGO918,328$284mInformation TechnologyBerkshire HathawayBRK.B495,386$283mFinancialsStryker CorporationSYK847,701$279mHealth CareIntercontinental ExchangeICE1.6m$251mFinancialsHome Depot (The)HD761,419$250mConsumer DiscretionaryDanaher CorporationDHR1.3m$246mHealth CareProgressive CorporationPGR1.2m$242mFinancialsUberUBER3.3m$237mIndustrialsJohnson & JohnsonJNJ955,632$234mHealth CareEcolabECL866,411$230mMaterialsAmerican ExpressAXP693,767$210mFinancialsPalo Alto NetworksPANW1.3m$209mInformation TechnologyIntuitive SurgicalISRG425,228$196mHealth CareTransDigm GroupTDG166,248$193mIndustrialsServiceNowNOW1.8m$188mInformation TechnologyVeeva SystemsVEEV1.1m$188mHealth CareBoeingBA922,925$184mIndustrialsInvescoIVZ311,016$180mFinancialsNetflixNFLX1.8m$170mCommunication ServicesCintasCTAS973,553$165mIndustrialsExxonMobilXOM946,386$161mEnergyChevron CorporationCVX715,986$148mEnergyArista NetworksANET1.2m$141mInformation TechnologyAbbott LaboratoriesABT1.3m$136mHealth CareAon plcAON421,605$136mFinancialsBlackstone Inc.BX1.2m$136mFinancialsCopartCPRT4.1m$135mIndustrialsGoldman SachsGS172,866$134mFinancialsProcter & GamblePG893,933$129mConsumer StaplesIBMIBM518,457$126mInformation TechnologyUnion Pacific CorporationUNP514,829$125mIndustrialsQuanta ServicesPWR225,850$124mIndustrialsDexcomDXCM1.9m$121mHealth CareRollins, Inc.ROL2.3m$121mIndustrialsLinde plcLIN233,182$116mMaterialsMicron TechnologyMU332,311$112mInformation TechnologyWaste ManagementWM484,303$111mIndustrialsTesla, Inc.TSLA296,041$110mConsumer DiscretionaryMerck & Co.MRK901,789$108mHealth CareMcDonald'sMCD348,243$108mConsumer DiscretionaryCoca-Cola Company (The)KO1.4m$108mConsumer StaplesO'Reilly AutomotiveORLY1.1m$102mConsumer Discretionary
What this page is not
Positions in S&P 500 constituents only, from 13F filings, which report US listed, long, US custodied holdings. A manager's real book is larger than this in every case: anything outside the index, outside US custody, held through derivatives, or below its reporting obligation is not here.