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Disclosery

COST COSTCO WHOLESALE CORPORATION

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COM (common), issuer CIK 909832

4,200 managers (4,278 13F filers) reported a position in COST shares at 2026-03-31, 320,333,954 shares in all. 249 filers opened a position and 127 filers sold out during the quarter.

Managers
4,200
13F filers
4,278
New
249
Added
1,799
Reduced
1,638
Sold out
127
Shares held by filers
320,333,954

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Wilcox William Richardofficer (Executive Vice President)2026-10-13-1,100 S$958.205Form 4

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Tandem Investment Advisors, Inc.43,412$43.3M2.12%-7,37913F-HRTimeline
PRUDENTIAL PLCin group PRUDENTIAL PLC43,342$43.2M0.25%+1,77413F-HRTimelineGroup
Mesirow Financial Investment Management…43,295$43.1M0.7%+2413F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …43,112$42.7M0.04%-11,37813F-HRTimelineGroup
Union Bancaire Privee, UBP SA36,190$42.2M0.59%-3,35913F-HRTimeline
Merit Financial Group, LLC42,027$41.9M0.31%+6,85813F-HRTimeline
CHILTON CAPITAL MANAGEMENT LLC42,013$41.9M1.46%-79813F-HRTimeline
YHB Investment Advisors, Inc.41,615$41.5M2.97%-62713F-HRTimeline
Blue Sparrow, LLC /DE41,590$41.4M0.71%-12,71013F-HRTimeline
Fiduciary Trust Coin group Fiduciary Trust Co41,304$41.2M0.49%-80913F-HRTimelineGroup
ZACKS INVESTMENT MANAGEMENT41,030$40.9M0.33%+1,32213F-HRTimeline
STEADFAST CAPITAL MANAGEMENT LP40,750$40.6M1.53%-67,95213F-HRTimeline
ADELL HARRIMAN & CARPENTER INC40,296$40.2M2.45%+34313F-HRTimeline
Investment Management Corp of Ontario40,257$40.1M0.52%-1,60013F-HRTimeline
MARCO INVESTMENT MANAGEMENT LLC40,207$40.1M3.02%-3113F-HRTimeline
Annex Advisory Services, LLC40,118$40M0.75%+60613F-HRTimeline
Randolph Co Inc40,074$39.9M3.81%+1013F-HRTimeline
Freestone Capital Holdings, LLCin group Freestone Capital Holdings, L…39,735$39.6M1.21%-33413F-HRTimelineGroup
BAILARD, INC.39,522$39.4M0.91%+16813F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC39,430$39.3M0.33%+4,65013F-HRTimelineGroup
Cornerstone Advisors, LLC39,204$39.1M1.44%+6,50413F-HRTimeline
Markel Group Inc.in group Markel Group Inc.39,150$39M0.33%013F-HRTimelineGroup
Vontobel Holding Ltd.in group Vontobel Holding Ltd.38,623$38.5M0.13%-1,26713F-HRTimelineGroup
Rafferty Asset Management, LLC38,530$38.4M0.16%-13,34013F-HRTimeline
CADINHA & CO LLC38,284$38.1M7.11%-21913F-HRTimeline
CITIZENS FINANCIAL GROUP INC/RIin group CITIZENS FINANCIAL GROUP INC/…38,237$38.1M0.53%-1,01713F-HRTimelineGroup
TruWealth Advisors, LLC38,183$38M1.83%+1,15613F-HRTimeline
HIGHLAND CAPITAL MANAGEMENT, LLC37,954$37.8M2%-1,83713F-HRTimeline
TOKIO MARINE ASSET MANAGEMENT CO LTDin group TOKIO MARINE HOLDINGS, INC.37,779$37.6M1.35%+3,85113F-HRTimelineGroup
Trajan Wealth LLC37,665$37.5M1.52%-1,29313F-HRTimeline
United American Securities Inc. (d/b/a …in group United American Securities In…37,339$37.2M8.12%-28613F-HRTimelineGroup
Advisors Asset Management, Inc.37,305$37.2M0.62%+97913F-HRTimeline
PARK NATIONAL CORP /OH/36,619$36.5M1.11%+80513F-HRTimeline
WHITTIER TRUST CO OF NEVADA INC35,719$36.4M0.75%+1,78413F-HRTimeline
Clarity Financial LLC36,372$36.2M3.94%+12713F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P36,143$36M0.9%-1,84913F-HRTimeline
OMERS ADMINISTRATION Corp35,963$35.8M0.23%+8,28613F-HRTimeline
PINNACLE ASSOCIATES LTD35,904$35.8M0.46%+2713F-HRTimeline
Carnegie Investment Counsel35,842$35.7M0.7%-75213F-HRTimeline
RENAISSANCE GROUP LLC35,719$35.6M1.49%new13F-HRTimeline
Horizon Investments, LLC35,622$35.4M0.4%+7,72713F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp35,411$35.3M0.68%-15213F-HRTimelineGroup
Verition Fund Management LLC35,363$35.2M0.34%+17,41613F-HRTimeline
NewEdge Wealth, LLC35,321$35.2M0.42%+1,38913F-HRTimeline
BARLOW WEALTH PARTNERS, LLC35,110$35.1M3.9%+28313F-HRTimeline
Birch Hill Investment Advisors LLC35,039$34.9M1.57%-22613F-HRTimeline
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.35,006$34.8M0.24%+4,83313F-HRTimeline
INDEPENDENT FINANCIAL GROUP, LLC34,887$34.8M0.78%-10413F-HR/ATimeline
Lincoln Capital LLC34,545$34.4M6.52%-27213F-HRTimeline
BAR HARBOR WEALTH MANAGEMENTin group BAR HARBOR WEALTH MANAGEMENT34,403$34.3M2.01%-2713F-HRTimelineGroup
Blue Chip Partners, LLC34,381$34.3M2.47%+1,83013F-HRTimeline
Achmea Investment Management B.V.in group Achmea Investment Management …34,345$34.2M0.9%-8,67913F-HRTimelineGroup
Gulf International Bank (UK) Ltd34,323$34.2M0.77%+11,76713F-HRTimeline
SILVERCREST ASSET MANAGEMENT GROUP LLC34,072$34M0.25%-1,11113F-HRTimeline
Cresset Asset Management, LLC33,947$33.8M0.15%+38413F-HRTimeline
KILEY JUERGENS WEALTH MANAGEMENT, LLC33,549$33.4M5.9%-9713F-HRTimeline
Ironvine Capital Partners, LLC33,513$33.4M3.67%-1013F-HRTimeline
CWA Asset Management Group, LLC33,352$33.2M1.14%-1,26613F-HRTimeline
NorthCrest Asset Manangement, LLC32,528$33M1.03%-11,59013F-HRTimeline
Estabrook Capital Management33,040$32.9M4.8%-9113F-HRTimeline
Madison Asset Management, LLCin group Madison Asset Management, LLC33,040$32.9M0.41%+5,45913F-HRTimelineGroup
Jain Global LLC33,013$32.9M0.42%+12,26813F-HRTimeline
GENERAL AMERICAN INVESTORS CO INC33,000$32.9M2.17%013F-HRTimeline
DEARBORN PARTNERS LLC32,064$31.9M1.73%-2,79913F-HRTimeline
HARVEY INVESTMENT CO LLC31,747$31.6M3.48%-54513F-HRTimeline
PROFUND ADVISORS LLC31,731$31.6M1.16%-6,44713F-HRTimeline
AEGON ASSET MANAGEMENT UK Plc31,711$31.6M0.42%-4,90313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Colonial Trust Advisorsgroup of 2 filers holding31,678$31.6M-822Timeline
Elo Mutual Pension Insurance Co31,578$31.5M0.52%-10,62213F-HRTimeline
UniSuper Management Pty Ltd31,500$31.4M0.21%+48113F-HRTimeline
COLDSTREAM CAPITAL MANAGEMENT INC31,472$31.4M0.39%+4,50913F-HRTimeline
BEESE FULMER INVESTMENT MANAGEMENT, INC.31,391$31.3M2%-31,31513F-HRTimeline
Diversify Advisory Services, LLCgroup of 2 filers holding31,066$31M-9,938Timeline
Private Wealth Partners, LLC30,912$30.8M2.37%-26513F-HRTimeline
IFP Advisors, Inc30,884$30.8M0.64%+9,78313F-HRTimeline
NEVILLE RODIE & SHAW INC30,691$30.6M2.22%-23113F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC30,668$30.6M0.03%-72,98313F-HRTimelineGroup
HB Wealth Management, LLC30,632$30.5M0.2%+3,23513F-HRTimeline
ARISTOTLE INVESTMENT SERVICES, LLCgroup of 2 filers holding30,628$30.5M+154Timeline
B. Metzler seel. Sohn & Co. AGin group B. Metzler seel. Sohn & Co. AG30,425$30.3M0.28%-2,12913F-HRTimelineGroup
Aptus Capital Advisors, LLC30,381$30.3M0.25%-53313F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding30,313$30.2M-6Timeline
Harbour Trust & Investment Management Co30,261$30.2M3.2%+82413F-HRTimeline
LYELL WEALTH MANAGEMENT, LP29,874$29.8M2.19%+37813F-HRTimeline
Spire Wealth Managementin group Spire Wealth Management29,798$29.7M1.01%+1,39813F-HRTimelineGroup
FACTORY MUTUAL INSURANCE CO29,200$29.1M0.33%+1,10013F-HRTimeline
Banco Santander, S.A.in group Banco Santander, S.A.29,200$29.1M0.23%-4,25613F-HRTimelineGroup
EULAV Asset Management28,700$28.6M0.92%-27,40013F-HRTimeline
FIRST NATIONAL BANK OF OMAHAgroup of 2 filers holding28,642$28.5M+117Timeline
BOKF, NAin group BOKF, NA28,415$28.3M0.43%+1,82213F-HRTimelineGroup
Snowden Capital Advisors LLC28,382$28.3M0.75%-1,79613F-HRTimeline
Rempart Asset Management Inc.28,024$27.9M5.87%-3,33313F-HRTimeline
DAYMARK WEALTH PARTNERS, LLC28,010$27.9M0.88%+61513F-HRTimeline
OLD NATIONAL BANCORP /IN/27,634$27.5M0.46%-3,44113F-HRTimeline
Bridgewater Associates, LP27,618$27.5M0.12%-2,72413F-HRTimeline
Private Advisory Group LLC27,602$27.5M1.91%+3,55613F-HRTimeline
WASHINGTON TRUST Co27,570$27.5M0.93%-32513F-HRTimeline
COMGEST GLOBAL INVESTORS S.A.S.in group COMGEST GLOBAL INVESTORS S.A.…27,516$27.4M0.6%-89,21313F-HRTimelineGroup
WEATHERLY ASSET MANAGEMENT L. P.27,424$27.3M2.21%-56213F-HRTimeline
Auxano Advisors, LLC27,284$27.2M5.42%-13213F-HRTimeline
HERITAGE INVESTORS MANAGEMENT CORP26,927$26.8M0.81%-5713F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC26,842$26.7M0.54%-3,82213F-HRTimeline
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC26,834$26.7M0.63%-5,43513F-HRTimelineGroup
AIA Group Ltdin group AIA Group Ltd26,816$26.7M0.39%+51713F-HRTimelineGroup
GODSEY & GIBB, INC26,805$26.7M2.33%+413F-HRTimeline
Orion Porfolio Solutions, LLC26,749$26.7M0.23%-6,97713F-HRTimeline
HANCOCK WHITNEY CORP26,296$26.4M0.46%+37613F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC26,373$26.3M0.2%-4,31513F-HRTimeline
Prospera Financial Services Inc26,316$26.2M0.42%-50713F-HRTimeline
Summit Financial, LLC26,213$26.1M0.33%+7,79613F-HRTimeline
ABSHER WEALTH MANAGEMENT, LLC25,989$25.9M3.04%-75013F-HRTimeline
BECKER CAPITAL MANAGEMENT INC25,936$25.8M0.76%-14813F-HRTimeline
EASTERN BANK25,904$25.8M0.44%+4,51213F-HRTimeline
DDD Partners, LLC25,821$25.7M1.78%-8913F-HRTimeline
HOWLAND CAPITAL MANAGEMENT LLC25,795$25.7M1.02%+16,05413F-HRTimeline
Integrated Wealth Concepts LLC25,592$25.5M0.2%+11,53513F-HRTimeline
Advisory Services Network, LLC25,444$25.4M0.34%+69913F-HRTimeline
NORTH POINT PORTFOLIO MANAGERS CORP/OH25,439$25.3M4.51%-65913F-HRTimeline
SouthState Bank Corpin group SouthState Bank Corp25,370$25.3M1.18%-52013F-HRTimelineGroup
Gradient Investments LLCin group Gradient Investments LLC25,309$25.2M0.39%-3,03613F-HRTimelineGroup
HARTFORD INVESTMENT MANAGEMENT CO25,293$25.2M0.8%-32013F-HRTimeline
Composition Wealth, LLC25,253$25.2M0.35%-5213F-HRTimeline
Osmosis Investment Management UK Ltd25,253$25.2M0.68%+3,72213F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC25,158$25.1M0.1%-68913F-HRTimeline
Laird Norton Wetherby Trust Company, LLCin group Laird Norton Wetherby Trust C…24,858$24.8M0.54%-36913F-HRTimelineGroup
Independent Advisor Alliance24,745$24.7M0.26%-1,31113F-HRTimeline
ZEVIN ASSET MANAGEMENT LLC24,655$24.6M3.4%-24313F-HRTimeline
SALEM INVESTMENT COUNSELORS INC24,622$24.5M0.72%+49013F-HR/ATimeline
BLB&B Advisors, LLC24,576$24.5M1.01%+19613F-HRTimeline
BRIGHTON JONES LLC24,575$24.5M0.54%new13F-HR/ATimeline
MIDDLETON & CO INC/MA24,516$24.4M2.79%-14913F-HRTimeline
Bath Savings Trust Co24,492$24.4M2.61%+29013F-HRTimeline
MEITAV INVESTMENT HOUSE LTDin group MEITAV INVESTMENT HOUSE LTD24,413$24.3M0.27%-21,53313F-HRTimelineGroup
BALDWIN WEALTH PARTNERS LLC/MA24,384$24.3M1.77%-12,86013F-HRTimeline
JAG CAPITAL MANAGEMENT, LLC24,330$24.2M2.73%+7,91913F-HRTimeline
KELLY LAWRENCE W & ASSOCIATES INC/CA24,323$24.2M6.74%-13513F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC24,133$24M0.19%+1,18413F-HRTimelineGroup
Farther Finance Advisors, LLC24,019$23.9M0.23%+2,88413F-HRTimeline
DIVIDEND ASSETS CAPITAL, LLC24,016$23.9M4.77%-1,68813F-HRTimeline
CARY STREET PARTNERS ASSET MANAGEMENT L…group of 2 filers holding23,875$23.8M-49Timeline
L. Roy Papp & Associates, LLP23,840$23.8M2.74%-79013F-HRTimeline
Mutual Advisors, LLC23,827$23.7M0.51%+3,71013F-HRTimeline
STRATEGIC PLANNING GROUP, LLC23,816$23.7M3.32%-1,79413F-HRTimeline
JACOBS & CO/CA23,711$23.6M2.33%-1213F-HRTimeline
National Mutual Insurance Federation of…in group National Mutual Insurance Fed…23,700$23.6M0.18%013F-HRTimelineGroup
Penobscot Investment Management Company…23,664$23.6M1.84%+98713F-HRTimeline
ARCADIA INVESTMENT MANAGEMENT CORP/MI23,656$23.6M4.04%-3713F-HRTimeline
RITHOLTZ WEALTH MANAGEMENT23,487$23.4M0.41%+2,25613F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…23,483$23.4M0.23%+16,52213F-HRTimelineGroup
Arkadios Wealth Advisors23,217$23.1M0.38%-73813F-HRTimeline
Voleon Capital Management LP23,161$23.1M0.5%+9,16213F-HRTimeline
Sterling Capital Management LLC23,151$23.1M0.44%+35913F-HRTimeline
ROFFMAN MILLER ASSOCIATES INC /PA/23,004$22.9M1.32%+30613F-HRTimeline
ZEGA Investments, LLC22,858$22.8M4.31%+6,70813F-HRTimeline
Daiichi Life Insurance Co., Ltd.in group Daiichi Life Insurance Co., L…22,830$22.7M0.65%-24013F-HRTimelineGroup
Azimuth Capital Investment Management L…22,827$22.7M0.86%-1,48913F-HRTimeline
OAKMONT Corp22,716$22.6M4.3%+58113F-HR/ATimeline
BRAUN STACEY ASSOCIATES INC22,643$22.6M0.75%+14313F-HRTimeline
Vestmark Advisory Solutions, Inc.22,637$22.6M0.25%+8,67413F-HRTimeline
Argent Trust Co22,523$22.4M0.76%-25213F-HRTimeline
J.W. COLE ADVISORS, INC.22,513$22.4M0.76%-5913F-HRTimeline
Lombard Odier Asset Management (Switzer…22,440$22.4M0.85%+3,20013F-HRTimeline
AMI ASSET MANAGEMENT CORP22,407$22.3M1.43%-65113F-HRTimeline
OAK RIDGE INVESTMENTS LLC22,378$22.3M1.47%+26113F-HRTimeline
Maryland State Retirement & Pension Sys…22,351$22.3M0.45%+12013F-HRTimeline
Borer Denton & Associates, Inc.22,208$22.1M7.89%-37813F-HRTimeline
FERGUSON WELLMAN CAPITAL MANAGEMENT, INC22,160$22.1M0.3%-93913F-HRTimeline
WOODSTOCK CORP21,931$21.9M1.95%-23413F-HRTimeline
ALBION FINANCIAL GROUP /UT21,869$21.8M1.41%+413F-HRTimeline
Northstar Group, Inc.21,816$21.7M3.07%-6313F-HRTimeline
Perigon Wealth Management, LLC21,737$21.7M0.39%-46513F-HRTimeline
PATTEN & PATTEN INC/TN21,685$21.6M1.3%-32513F-HRTimeline
AMERICAN NATIONAL BANK & TRUST21,667$21.6M2.06%-22213F-HRTimeline
Segment Wealth Management, LLC21,584$21.5M1.26%+28113F-HRTimeline
CONWAY CAPITAL MANAGEMENT, INC.21,524$21.4M10.04%-2513F-HRTimeline
Empirical Financial Services, LLC d.b.a…21,521$21.4M0.37%-82813F-HRTimeline
Washington Trust Bank21,506$21.4M1.58%-91113F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Alley Investment Management Company, LLC21,315$21.2M2.59%-20613F-HRTimeline
NWF Advisory Services Inc.21,267$21.2M2.39%-25013F-HRTimeline
Empire Life Investments Inc.21,097$21M1.28%+7413F-HRTimeline
Talbot Financial, LLC21,057$21M1.76%+12813F-HRTimeline
ROTHSCHILD INVESTMENT LLC21,008$20.9M1.09%-20013F-HRTimeline
NWAM LLC20,897$20.8M1.2%-14713F-HRTimeline
CHOREO, LLC20,885$20.8M0.26%+24113F-HRTimeline
FIRST MANHATTAN CO. LLC.20,846$20.8M0.06%+35513F-HRTimeline
Cardinal Capital Management20,747$20.7M2.67%-8113F-HRTimeline
ExodusPoint Capital Management, LP20,739$20.7M0.21%new13F-HRTimeline
Engineers Gate Manager LP20,688$20.6M0.26%+15,73813F-HRTimeline
Renaissance Investment Group LLC20,545$20.5M4.4%-14413F-HRTimeline
EVERGREEN CAPITAL MANAGEMENT LLC20,532$20.5M0.44%-1,01513F-HRTimeline
Ashton Thomas Private Wealth, LLC20,494$20.4M0.48%+89013F-HRTimeline
Brooklyn Investment Group20,406$20.3M0.64%+9,55513F-HRTimeline
CIM, LLC20,363$20.3M2.93%-1,38713F-HRTimeline
Crossmark Global Holdings, Inc.20,271$20.2M0.3%+2,74713F-HRTimeline
NEW MEXICO EDUCATIONAL RETIREMENT BOARD20,165$20.1M0.62%013F-HRTimeline
FRANKLIN STREET ADVISORS INC /NC20,117$20M1.23%-67513F-HRTimeline
CENTRAL TRUST Co19,995$19.9M0.39%+113F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…19,913$19.8M0.52%-14,26313F-HRTimelineGroup
Ethic Inc.19,848$19.8M0.31%+2,54913F-HRTimeline
World Investment Advisors19,802$19.7M0.32%-27913F-HRTimeline

Events

  • Wilcox William Richard sold 1,100 COST shares on 2026-10-13, Form 4 filed 2026-10-14. 0000909832-26-000098

    Accepted , ingested