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Disclosery

ATKR ATKORE INC

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COMMON STOCK (common), issuer CIK 1666138

304 managers (310 13F filers) reported a position in ATKR shares at 2025-12-31, 32,388,517 shares in all. 51 filers opened a position and 49 filers sold out during the quarter.

Managers
304
13F filers
310
New
51
Added
94
Reduced
107
Sold out
49
Shares held by filers
32,388,517

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

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, 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
VANGUARD GROUP INCin group VANGUARD GROUP INC3,635,940$230M<0.01%+3,34613F-HRTimelineGroup
Gates Capital Management, Inc.in group Gates Capital Management, Inc.2,733,147$173M6.02%-210,90113F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.2,555,705$162M<0.01%-55,67713F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP1,385,741$87.6M0.06%+218,35813F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,253,549$79.3M0.04%+95,44613F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,130,477$71.5M0.01%+94,39813F-HRTimelineGroup
LSV ASSET MANAGEMENT960,450$60.7M0.13%+52,85013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP827,521$52.3M<0.01%-7,45613F-HRTimelineGroup
Coliseum Capital Management, LLC809,305$51.2M4.19%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC802,214$50.7M<0.01%+1,54813F-HRTimelineGroup
EARNEST PARTNERS LLC783,738$49.6M0.21%new13F-HRTimeline
Harding Loevner LP732,753$46.3M0.41%-163,24513F-HRTimeline
Hill City Capital, LP728,206$46.1M1.74%013F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …704,668$44.6M0.03%+277,43313F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC492,316$31.1M0.02%-511,49613F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/419,685$26.5M<0.01%+93,61413F-HRTimelineGroup
LONDON CO OF VIRGINIA411,729$26M0.15%-18,69313F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co410,971$26M<0.01%-47,88813F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO397,146$25.1M<0.01%+101,30813F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY396,507$25.1M<0.01%+63,51313F-HR/ATimelineGroup
GENDELL JEFFREY Lin group GENDELL JEFFREY L387,201$24.5M0.43%-30,94513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC383,841$24.3M<0.01%-225,29013F-HR/ATimelineGroup
Oslo Pensjonsforsikring AS377,000$23.8M3.52%013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP363,649$23M<0.01%-25,08113F-HRTimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…351,287$22.2M0.03%+8,25213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND345,828$21.9M0.03%+318,51413F-HRTimeline
CANADA PENSION PLAN INVESTMENT BOARD329,100$20.8M0.01%+12,70013F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC323,719$20.5M0.08%-14,40113F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…297,000$18.8M0.03%new13F-HRTimelineGroup
Swedbank ABin group Swedbank AB296,206$18.7M0.02%013F-HR/ATimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding286,631$18.1M+63,733Timeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp235,771$14.9M<0.01%+30513F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC231,611$14.6M0.31%-21,37113F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO205,918$13M0.01%+181,88513F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN201,588$12.8M<0.01%+102,25013F-HRTimelineGroup
Nuveen, LLCin group TIAA193,517$12.2M<0.01%-8,80013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC193,444$12.2M0.01%+98,11513F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC192,810$12.2M0.04%-60,50313F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…188,262$11.9M<0.01%-25,60613F-HRTimelineGroup
Pacer Advisors, Inc.178,188$11.3M0.03%-16,92913F-HR/ATimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …162,343$10.5M0.02%-533,28813F-HRTimelineGroup
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC155,724$9.85M0.03%-10,83613F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.154,541$9.77M0.02%+33,51013F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding152,088$9.62M-188,777Timeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC147,661$9.34M0.01%+49,17113F-HRTimelineGroup
DNB Asset Management ASin group DNB Asset Management AS146,184$9.25M0.03%+6,85613F-HRTimelineGroup
ExodusPoint Capital Management, LP124,624$7.88M0.09%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.113,145$7.16M0.01%-38,14713F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.103,765$6.56M<0.01%+15,49213F-HRTimelineGroup
Allianz SEgroup of 2 filers holding98,711$6.24M-1,257Timeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …97,609$6.16M0.01%-14,02513F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…94,000$5.95M0.03%013F-HRTimeline
North Growth Management Ltd.94,000$5.93M0.93%+1,00013F-HRTimeline
NORGES BANK89,623$5.67M<0.01%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC85,928$5.43M<0.01%+3313F-HRTimelineGroup
Qube Research & Technologies Ltd85,170$5.39M0.01%+29,67413F-HRTimeline
Rock Point Advisors, LLC85,002$5.38M1.35%-23,53913F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…83,744$5.3M0.01%-41313F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…81,490$5.15M0.03%new13F-HRTimelineGroup
KESTREL INVESTMENT MANAGEMENT CORP74,650$4.72M2.68%-2,70013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …73,456$4.65M0.01%-20013F-HRTimelineGroup
DekaBank Deutsche Girozentrale22,580$4.48M0.01%013F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management68,423$4.33M0.01%-32,38213F-HRTimelineGroup
Swiss National Bank66,400$4.2M<0.01%+1,10013F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\65,994$4.17M<0.01%-166,18213F-HRTimelineGroup
THOMPSON SIEGEL & WALMSLEY LLC65,458$4.14M0.07%-78,89413F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC64,517$4.08M<0.01%+36,22113F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…63,000$3.98M0.01%+28,90013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC61,865$3.91M<0.01%+5,90213F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS61,643$3.9M<0.01%-23,43613F-HRTimelineGroup
NOMURA ASSET MANAGEMENT CO LTDgroup of 2 filers holding61,182$3.87M+60,462Timeline
Man Group plcin group Man Group plc61,024$3.86M0.01%+35,69213F-HRTimelineGroup
DENALI ADVISORS LLC55,000$3.48M0.39%+2,00013F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC54,721$3.46M0.02%+13,71913F-HRTimeline
EDENTREE ASSET MANAGEMENT Ltd54,550$3.45M1.06%-10,90013F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC50,661$3.2M<0.01%-16,78013F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC49,668$3.14M<0.01%-4,91413F-HRTimelineGroup
CacheTech Inc.47,076$2.98M0.55%+2,70613F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP47,051$2.98M<0.01%-104,57213F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC46,755$2.96M0.02%+41,08513F-HRTimelineGroup
DEAN INVESTMENT ASSOCIATES, LLCgroup of 2 filers holding46,740$2.96M+6,634Timeline
RHUMBLINE ADVISERS44,506$2.81M<0.01%-7,66813F-HRTimeline
CastleKnight Management LP42,200$2.67M0.15%013F-HRTimeline
Adams Wealth Management40,726$2.58M0.55%+22013F-HRTimeline
Willis Investment Counsel39,351$2.49M0.13%+27,69813F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc36,544$2.31M<0.01%-1,62313F-HRTimelineGroup
ISTHMUS PARTNERS, LLC36,232$2.29M0.25%+1,38313F-HRTimeline
ALLIANCEBERNSTEIN L.P.35,060$2.22M<0.01%-4,30213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC33,230$2.1M<0.01%-20,18913F-HRTimelineGroup
CSM Advisors, LLC33,012$2.09M0.06%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/32,783$2.07M<0.01%-2,63713F-HRTimeline
SG Americas Securities, LLC32,023$2.02M<0.01%+27,79413F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…31,874$2.02M<0.01%+75213F-HRTimeline
CAXTON ASSOCIATES LLP31,520$1.99M0.04%new13F-HRTimeline
OMERS ADMINISTRATION Corp31,451$1.99M0.01%+3,07213F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources31,420$1.99M<0.01%+30,22913F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS31,199$1.97M0.01%+49213F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…29,749$1.88M<0.01%-5,44613F-HRTimelineGroup
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding28,918$1.83M-6,819Timeline
Kerrisdale Advisers, LLC28,074$1.78M0.84%013F-HRTimeline
EASTERLY INVESTMENT PARTNERS LLC27,113$1.71M0.11%+4,31713F-HRTimeline
Oakum Bay Capital LLC26,767$1.69M0.88%13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC26,370$1.67M<0.01%-7,53713F-HRTimelineGroup
Virtus Family Office LLC25,504$1.61M1.39%+38213F-HRTimeline
JB CAPITAL PARTNERS LP25,000$1.58M0.27%013F-HRTimeline
Ausbil Investment Management Ltd24,545$1.55M0.88%-12,05813F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…23,420$1.48M<0.01%013F-HRTimeline
Twelve Points Wealth Management LLC21,510$1.45M0.33%-11,72613F-HRTimeline
Voleon Capital Management LP22,158$1.4M0.03%+3,20113F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P21,746$1.38M0.03%+1,82513F-HRTimeline
KLP KAPITALFORVALTNING AS20,700$1.31M0.01%013F-HRTimeline
HighTower Advisors, LLC20,336$1.29M<0.01%+7,85613F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA19,557$1.24M<0.01%-462,75813F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC19,237$1.22M0.01%new13F-HRTimelineGroup
Aviance Capital Partners, LLC18,959$1.2M0.14%-16913F-HRTimeline
Exit Wealth Advisors, LLC.18,812$1.19M0.7%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…18,790$1.19M0.01%-74513F-HRTimelineGroup
Morningstar Investment Management LLCin group Morningstar Investment Manage…18,562$1.17M0.07%013F-HRTimelineGroup
Gotham Asset Management, LLC17,047$1.08M<0.01%+89913F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.16,737$1.06M0.01%-565,43113F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …15,913$1.01M<0.01%-91213F-HRTimelineGroup
Cambridge Investment Research Advisors,…15,852$1M<0.01%new13F-HRTimeline
Creative Planningin group Creative Planning15,783$998K<0.01%+1,65613F-HRTimelineGroup
Aventail Capital Group, LP15,603$987K0.06%new13F-HRTimeline
WINCAP FINANCIAL LLC15,468$978K0.67%+2,46113F-HRTimeline
LPL Financial LLC14,607$924K<0.01%+10,12213F-HRTimeline
Round Hill Asset Management14,232$900K0.57%-27513F-HRTimeline
Entropy Technologies, LP14,199$898K0.05%+3,71613F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson14,078$890K<0.01%013F-HRTimelineGroup
Irenic Capital Management LP13,977$884K0.12%new13F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC13,783$872K0.01%-2,19913F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC13,522$855K0.01%-3,26213F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC12,905$816K<0.01%-11113F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD12,788$809K<0.01%+81913F-HRTimeline
Linden Thomas Advisory Services, LLC12,713$804K0.08%+12613F-HRTimeline
Y-Intercept (Hong Kong) Ltd12,679$802K0.02%+5,36013F-HRTimeline
Sankala Group LLC11,943$773K0.62%13F-HRTimeline
Clear Creek Financial Management, LLC11,990$758K0.06%+3,64213F-HRTimeline
FMR LLCin group FMR LLC11,782$745K<0.01%-1,64113F-HRTimelineGroup
Versor Investments LP11,649$737K0.11%+1,58213F-HRTimeline
ARGA Investment Management, LP11,401$721K0.02%013F-HRTimeline
Unison Advisors LLC11,301$715K0.06%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…11,300$715K<0.01%+1,09313F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC11,295$714K<0.01%-19,20713F-HRTimelineGroup
SummerHaven Investment Management, LLC11,196$708K0.4%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC11,102$702K<0.01%new13F-HRTimelineGroup
Laurion Capital Management LP10,804$683K0.05%new13F-HR/ATimeline
Lakewood Asset Management LLC10,590$670K0.39%+41313F-HRTimeline
Clayton Partners LLC10,000$632K0.46%new13F-HRTimeline
Legato Capital Management LLC9,985$632K0.05%-1,36013F-HRTimeline
Foguth Wealth Management, LLC.9,790$631K0.1%13F-HRTimeline
HRT FINANCIAL LP9,742$616K<0.01%new13F-HRTimeline
Quantbot Technologies LP9,657$611K0.02%-48713F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM9,391$594K<0.01%-56713F-HRTimeline
Atria Investments, Inc9,106$576K0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…8,924$564K<0.01%-60913F-HRTimeline
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC8,900$563K0.01%013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC8,748$553K<0.01%-7,15313F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.8,609$545K0.02%new13F-HRTimeline
BOKF, NAin group BOKF, NA7,990$505K0.01%-2,64013F-HRTimelineGroup
Dynamic Technology Lab Private Ltd7,940$502K0.11%new13F-HRTimeline
Meixler Investment Management, Ltd.7,524$476K0.29%-17613F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…7,455$472K<0.01%013F-HRTimeline
Freestone Grove Partners LP7,336$464K<0.01%-7,52913F-HRTimeline
Verition Fund Management LLC7,259$459K<0.01%-118,50713F-HRTimeline
Grantham, Mayo, Van Otterloo & Co. LLC7,059$446K<0.01%-3,68813F-HRTimeline
Quantinno Capital Management LP6,815$431K<0.01%+1,94313F-HRTimeline
Old West Investment Management, LLC6,791$430K0.08%new13F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP6,634$420K<0.01%-56613F-HRTimelineGroup
ROMAN BUTLER FULLERTON & CO5,394$396K0.1%+1,12613F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd6,181$391K0.01%new13F-HRTimelineGroup
ProShare Advisors LLC6,142$388K<0.01%+38413F-HRTimeline
Brooklyn Investment Group5,955$382K0.02%new13F-HRTimeline
VARCOV Co.6,025$381K0.15%13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC5,974$378K<0.01%-11613F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC5,800$367K0.03%-97513F-HRTimeline
INCEPTIONR LLC5,767$365K0.1%new13F-HRTimeline
CAPTRUST FINANCIAL ADVISORS5,688$360K<0.01%new13F-HRTimeline
AlphaQuest LLC5,666$358K0.02%+14613F-HRTimeline
WEDGE CAPITAL MANAGEMENT L L P/NC5,640$357K0.01%-1,42413F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…5,402$342K<0.01%+8513F-HR/ATimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…5,126$324K<0.01%013F-HRTimelineGroup
Cetera Investment Advisers5,069$321K<0.01%new13F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC4,983$315K<0.01%+4013F-HRTimelineGroup
FourThought Financial Partners, LLC4,907$310K0.03%013F-HRTimeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)4,884$309K<0.01%-70013F-HRTimelineGroup
Pathstone Holdings, LLCin group Pathstone Holdings, LLC4,816$305K<0.01%-3,18713F-HRTimelineGroup
STRS OHIO4,600$291K<0.01%+4,00013F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co4,433$280K<0.01%+69613F-HRTimelineGroup
MML INVESTORS SERVICES, LLC4,238$268K<0.01%new13F-HRTimeline
Engineers Gate Manager LP4,215$267K<0.01%-31,88813F-HRTimeline
State of Wyoming4,158$263K0.03%-5,67213F-HRTimeline
Arkadios Wealth Advisors4,008$254K0.01%+613F-HRTimeline
GROUP ONE TRADING LLC3,971$251K0.01%-77913F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC3,907$247K<0.01%-67113F-HRTimeline
PARK AVENUE SECURITIES LLCin group PARK AVENUE SECURITIES LLC3,837$243K<0.01%new13F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…3,831$242K<0.01%013F-HRTimeline
PDT Partners, LLC3,700$234K0.02%new13F-HRTimeline
EP Wealth Advisors, LLC3,664$232K<0.01%13F-HRTimeline
&PARTNERS3,598$228K<0.01%new13F-HRTimeline