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Disclosery

ATKR ATKORE INC

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COMMON STOCK (common), issuer CIK 1666138

296 managers (302 13F filers) reported a position in ATKR shares at 2025-09-30, 32,678,415 shares in all. 54 filers opened a position and 47 filers sold out during the quarter.

Managers
296
13F filers
302
New
54
Added
85
Reduced
122
Sold out
47
Shares held by filers
32,678,415

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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 INCgroup of 2 filers holding3,632,594$228M+269,841Timeline
Gates Capital Management, Inc.in group Gates Capital Management, Inc.2,944,048$185M5.72%+315,85913F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.2,611,382$164M<0.01%-62,71913F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP1,167,383$73.2M0.05%-590,41413F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,158,103$72.7M0.04%+144,84413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,036,079$65M0.01%+18,95113F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC1,003,812$63M0.04%-7,96213F-HRTimeline
LSV ASSET MANAGEMENT907,600$56.9M0.13%+19,80013F-HRTimeline
Harding Loevner LP895,998$56.2M0.41%-442,16413F-HRTimeline
STATE STREET CORPin group STATE STREET CORP834,977$52.4M<0.01%-38,55013F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC800,666$50.2M<0.01%-5,72613F-HRTimelineGroup
Hill City Capital, LP728,206$45.7M1.93%new13F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …695,631$44.6M0.07%-266,12113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC609,131$38.2M0.01%+339,87413F-HRTimelineGroup
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.582,168$36.5M0.33%new13F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA482,315$30.3M0.01%+439,58513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co458,859$28.8M<0.01%-30,44313F-HRTimelineGroup
LONDON CO OF VIRGINIA430,422$27M0.15%-23,48113F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …427,235$26.8M0.02%+123,15013F-HRTimelineGroup
GENDELL JEFFREY Lin group GENDELL JEFFREY L418,146$26.2M0.48%+268,04113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP388,730$24.4M<0.01%-19,98413F-HRTimelineGroup
Oslo Pensjonsforsikring AS377,000$23.7M3.61%+126,56213F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…343,035$21.5M0.03%+4,11413F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding340,865$21.4M-45,649Timeline
JACOBS LEVY EQUITY MANAGEMENT, INC338,120$21.2M0.08%new13F-HRTimeline
River Road Asset Management, LLC336,274$21.1M0.24%-456,15313F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY332,994$20.9M<0.01%+8,41813F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/326,071$20.5M<0.01%-124,11513F-HR/ATimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD316,400$19.9M0.01%+225,20013F-HRTimeline
Swedbank ABin group Swedbank AB296,206$18.6M0.02%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO295,838$18.6M<0.01%-239,32413F-HR/ATimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC253,313$15.9M0.05%-69,05813F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC252,982$15.9M0.34%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp235,466$14.8M<0.01%-9,21013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\232,176$14.6M<0.01%+121,34513F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding222,898$14M+155,657Timeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…213,868$13.4M<0.01%-69,30013F-HRTimelineGroup
Nuveen, LLCin group TIAA202,317$12.7M<0.01%+15,06413F-HRTimelineGroup
Pacer Advisors, Inc.195,117$12.2M0.03%-77,04013F-HRTimeline
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC166,560$10.4M0.03%+14,26013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP151,623$9.51M0.01%+78,59213F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.151,292$9.49M0.01%+84,43713F-HRTimelineGroup
THOMPSON SIEGEL & WALMSLEY LLC144,352$9.06M0.15%+8,42313F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS139,328$8.74M0.03%+14,47313F-HRTimelineGroup
Empowered Funds, LLC135,882$8.53M0.09%+102,30213F-HRTimeline
Verition Fund Management LLC125,766$7.89M0.05%new13F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.121,031$7.59M0.01%-194,21913F-HRTimelineGroup
Cambria Investment Management, L.P.115,479$7.25M0.44%+15,01313F-HR/ATimeline
Rock Point Advisors, LLC108,541$6.81M1.8%+22,20313F-HRTimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …111,634$6.74M0.01%+4,40113F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management100,805$6.32M0.01%new13F-HRTimelineGroup
Allianz SEgroup of 2 filers holding99,968$6.27M+29,495Timeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN99,338$6.23M<0.01%-52,22613F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC98,490$6.18M<0.01%+13,42313F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC95,329$5.98M0.01%+16,67613F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…94,000$5.9M0.03%013F-HRTimeline
North Growth Management Ltd.93,000$5.82M1.01%+12,00013F-HRTimeline
Invesco Ltd.in group Invesco Ltd.88,273$5.54M<0.01%+22,57113F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC85,895$5.39M<0.01%-115,43913F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS85,079$5.34M<0.01%+67,66613F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…84,157$5.28M0.01%+5,64513F-HRTimelineGroup
KESTREL INVESTMENT MANAGEMENT CORP77,350$4.85M2.74%013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …73,656$4.62M0.01%-7,11713F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC67,441$4.23M<0.01%-27,92313F-HRTimelineGroup
EDENTREE ASSET MANAGEMENT Ltd65,450$4.1M0.99%-16,35013F-HRTimeline
Swiss National Bank65,300$4.1M<0.01%-40013F-HRTimeline
Holocene Advisors, LP64,342$4.04M0.01%+7,73513F-HRTimeline
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD60,675$3.81M<0.01%-724,44613F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC55,963$3.51M<0.01%-18,94613F-HR/ATimelineGroup
Qube Research & Technologies Ltd55,496$3.48M<0.01%-48,60713F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC54,582$3.42M<0.01%-62,58113F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC53,419$3.35M<0.01%+25,16613F-HRTimelineGroup
ALGERT GLOBAL LLC53,054$3.33M0.06%+7,54013F-HR/ATimeline
DENALI ADVISORS LLC53,000$3.33M0.38%-2613F-HRTimeline
RHUMBLINE ADVISERS52,174$3.27M<0.01%-1,81813F-HRTimeline
Ruffer LLP44,841$2.81M0.16%new13F-HRTimeline
CacheTech Inc.44,370$2.78M0.56%+3,19013F-HRTimeline
CastleKnight Management LP42,200$2.65M0.14%-21,00013F-HRTimeline
Yaupon Capital Management LP41,236$2.59M0.13%new13F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC41,002$2.57M0.02%+22,20813F-HRTimeline
Adams Wealth Management40,506$2.54M0.54%-67413F-HRTimeline
DEAN INVESTMENT ASSOCIATES, LLCgroup of 2 filers holding40,106$2.52M-14,268Timeline
ALLIANCEBERNSTEIN L.P.39,362$2.47M<0.01%+30213F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc38,167$2.39M<0.01%-3,12313F-HRTimelineGroup
Ausbil Investment Management Ltd36,603$2.35M1.25%+3,83413F-HRTimeline
Engineers Gate Manager LP36,103$2.27M0.03%-5,78213F-HRTimeline
Mitsubishi UFJ Trust & Banking Corpgroup of 2 filers holding35,737$2.24M-2,073Timeline
DRW Securities, LLC35,597$2.24M0.12%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/35,420$2.22M<0.01%+1,15513F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…35,195$2.21M<0.01%-31,69313F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…34,100$2.14M<0.01%new13F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC33,907$2.13M<0.01%+20,03013F-HRTimelineGroup
Twelve Points Wealth Management LLC33,236$2.09M0.52%-23713F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…31,122$1.95M<0.01%-1,94513F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS30,707$1.93M0.01%+8,39113F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC30,502$1.91M0.01%+1,73913F-HRTimelineGroup
OMERS ADMINISTRATION Corp28,379$1.78M0.01%+1,03613F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC28,296$1.78M<0.01%-5,01313F-HRTimelineGroup
Kerrisdale Advisers, LLC28,074$1.76M0.91%+1,96013F-HRTimeline
FOX RUN MANAGEMENT, L.L.C.27,889$1.75M0.27%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND27,314$1.71M<0.01%-32,13513F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC27,079$1.7M0.02%+23,65613F-HR/ATimelineGroup
Man Group plcin group Man Group plc25,332$1.59M<0.01%+16,29513F-HRTimelineGroup
Virtus Family Office LLC25,122$1.58M1.48%+3,08713F-HRTimeline
JB CAPITAL PARTNERS LP25,000$1.57M0.27%013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO24,033$1.51M<0.01%-29,94713F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…23,420$1.47M<0.01%new13F-HRTimeline
EASTERLY INVESTMENT PARTNERS LLC22,796$1.43M0.1%-26,86613F-HRTimeline
DekaBank Deutsche Girozentrale22,580$1.36M<0.01%013F-HRTimeline
KLP KAPITALFORVALTNING AS20,700$1.3M0.01%+3,10013F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P19,921$1.25M0.03%+6,40313F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…19,535$1.23M0.01%new13F-HRTimelineGroup
Aviance Capital Partners, LLC19,128$1.2M0.14%-97013F-HRTimeline
Voleon Capital Management LP18,957$1.19M0.03%new13F-HRTimeline
Morningstar Investment Management LLCin group Morningstar Investment Manage…18,562$1.17M0.04%new13F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …16,825$1.06M<0.01%-1,16113F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC16,784$1.05M0.01%-6,54913F-HRTimeline
Gotham Asset Management, LLC16,148$1.01M<0.01%-9,93013F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC15,982$1M0.01%+6,87513F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC15,901$998K<0.01%-7,83113F-HRTimelineGroup
MEEDER ASSET MANAGEMENT INCin group Meeder Advisory Services, Inc.15,203$954K0.05%+2,97913F-HRTimelineGroup
Freestone Grove Partners LP14,865$933K0.01%+10,93613F-HRTimeline
Round Hill Asset Management14,507$910K0.6%+5,41113F-HRTimeline
Creative Planningin group Creative Planning14,127$886K<0.01%-5,46513F-HRTimelineGroup
Vest Financial, LLC14,098$885K0.01%-8,66613F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson14,078$883K<0.01%-165,37413F-HRTimelineGroup
FMR LLCin group FMR LLC13,423$842K<0.01%-45,87513F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC13,016$817K<0.01%+3,37813F-HRTimelineGroup
WINCAP FINANCIAL LLC13,007$816K0.56%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…12,998$815K0.01%+4,73813F-HRTimelineGroup
Linden Thomas Advisory Services, LLC12,587$790K0.08%+52713F-HRTimeline
HighTower Advisors, LLC12,480$783K<0.01%-413F-HRTimeline
Aquatic Capital Management LLC12,138$762K0.01%new13F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD11,969$751K<0.01%-25,20013F-HRTimeline
Willis Investment Counsel11,653$731K0.04%-313F-HRTimeline
ARGA Investment Management, LP11,401$715K0.02%+2,73613F-HRTimeline
Legato Capital Management LLC11,345$712K0.08%-3,84113F-HRTimeline
SummerHaven Investment Management, LLC11,196$702K0.41%+4,91313F-HRTimeline
OXFORD ASSET MANAGEMENT LLP10,985$689K0.23%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Grantham, Mayo, Van Otterloo & Co. LLC10,747$674K<0.01%-8,69213F-HRTimeline
BOKF, NAin group BOKF, NA10,630$667K0.01%+4213F-HRTimelineGroup
Entropy Technologies, LP10,483$658K0.05%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…10,207$640K<0.01%-113F-HRTimeline
Lakewood Asset Management LLC10,177$639K0.39%-6213F-HRTimeline
Quantbot Technologies LP10,144$636K0.02%new13F-HRTimeline
Versor Investments LP10,067$632K0.12%+3,72113F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM9,958$625K<0.01%-8113F-HRTimeline
State of Wyoming9,830$617K0.07%+3,51013F-HRTimeline
Police & Firemen's Retirement System of…9,533$598K<0.01%+1,54113F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC9,299$581K<0.01%-7,28913F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC8,900$558K0.01%013F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP8,808$553K0.05%new13F-HRTimeline
Peterson Wealth Services788$538K0.15%-7,11413F-HRTimeline
OCCUDO QUANTITATIVE STRATEGIES LP8,547$536K0.07%new13F-HRTimeline
WOLVERINE TRADING, LLC8,771$532K0.01%new13F-HRTimeline
Clear Creek Financial Management, LLC8,348$524K0.05%+1,85013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC8,003$502K<0.01%-2,92113F-HRTimelineGroup
Meixler Investment Management, Ltd.7,700$483K0.3%+2,47413F-HRTimeline
Semanteon Capital Management, LP7,622$478K0.6%new13F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…7,455$468K<0.01%-3313F-HRTimeline
Y-Intercept (Hong Kong) Ltd7,319$459K0.01%-89013F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP7,200$452K<0.01%-71013F-HRTimelineGroup
WEDGE CAPITAL MANAGEMENT L L P/NC7,064$443K0.01%-162,32513F-HRTimeline
PRELUDE CAPITAL MANAGEMENT, LLC6,775$425K0.03%+1,42713F-HRTimeline
Bayforest Capital Ltd6,337$398K0.19%-9,00913F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC6,090$382K<0.01%-3,24613F-HRTimelineGroup
EntryPoint Capital, LLC5,902$370K0.14%new13F-HRTimeline
ProShare Advisors LLC5,758$361K<0.01%-1,30113F-HRTimeline
SHUFRO ROSE & CO LLC0$358K0.03%new13F-HRTimelineAmount filed as zero, left out of ratios.
Counterpoint Mutual Funds LLC5,672$356K0.03%new13F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC5,670$356K<0.01%-85,75513F-HRTimelineGroup
ROYCE & ASSOCIATES LP5,614$352K<0.01%-362,89613F-HRTimeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)5,584$350K<0.01%-55013F-HRTimelineGroup
AlphaQuest LLC5,520$346K0.02%new13F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…5,317$334K<0.01%new13F-HRTimelineGroup
CAPSTONE INVESTMENT ADVISORS, LLCin group CAPSTONE INVESTMENT ADVISORS,…5,231$328K<0.01%new13F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…5,126$322K<0.01%013F-HRTimelineGroup
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC4,943$310K<0.01%+1,74113F-HRTimelineGroup
FourThought Financial Partners, LLC4,907$308K0.03%new13F-HRTimeline
Quantinno Capital Management LP4,872$306K<0.01%-2,27713F-HRTimeline
GROUP ONE TRADING LLC4,750$298K0.01%+3,37713F-HRTimeline
ROMAN BUTLER FULLERTON & CO4,268$296K0.08%-90413F-HRTimeline
Ensign Peak Advisors, Inc4,667$293K<0.01%-5,05013F-HR/ATimeline
Aristides Capital LLC4,664$293K0.09%new13F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC4,578$287K<0.01%new13F-HRTimeline
LPL Financial LLC4,485$281K<0.01%-3,14213F-HRTimeline
COMERICA BANK4,469$280K<0.01%-19,51813F-HRTimeline
Matrix Trust Co4,391$275K0.04%+25813F-HRTimeline
SG Americas Securities, LLC4,229$265K<0.01%+40713F-HRTimeline
Silver Coast Investments LLC4,051$254K0.09%013F-HRTimeline
Arkadios Wealth Advisors4,002$251K0.01%-10913F-HRTimeline
TWO SIGMA SECURITIES, LLC3,972$249K0.04%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…3,831$240K<0.01%013F-HRTimeline
Diametric Capital, LP3,771$237K0.09%new13F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co3,737$227K<0.01%013F-HRTimelineGroup
CIBC Bancorp USA Inc.group of 2 filers holding3,615$227K+3,589Timeline
Cresset Asset Management, LLC3,500$220K<0.01%013F-HR/ATimeline
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…3,454$217K<0.01%-1,60013F-HRTimelineGroup
EMC Capital Management3,033$190K0.09%013F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,875$180K0.01%-69613F-HRTimelineGroup