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Disclosery

KOP KOPPERS HOLDINGS INC

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COM (common), issuer CIK 1315257

198 managers (204 13F filers) reported a position in KOP shares at 2026-03-31, 19,091,525 shares in all. 29 filers opened a position and 19 filers sold out during the quarter.

Managers
198
13F filers
204
New
29
Added
69
Reduced
65
Sold out
19
Shares held by filers
19,091,525

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

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

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
BlackRock, Inc.in group BlackRock, Inc.3,045,112$118M<0.01%-658,40513F-HRTimelineGroup
VANGUARD GROUP INCgroup of 6 filers holding1,560,064$60.3MnewTimeline
PZENA INVESTMENT MANAGEMENT LLC1,209,376$46.8M0.15%+5,12413F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,191,358$46.1M0.01%+17,83313F-HRTimelineGroup
FULLER & THALER ASSET MANAGEMENT, INC.978,590$37.9M0.13%-35,22813F-HRTimeline
Simcoe Capital Management, LLC944,430$36.5M6.78%+130,84013F-HRTimeline
LSV ASSET MANAGEMENT926,031$35.8M0.08%-19,20013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP752,264$29.1M<0.01%-12,06013F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC535,002$20.7M0.01%+115,67913F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co477,878$18.5M<0.01%-90,53513F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC467,609$18.1M<0.01%+10,06113F-HRTimelineGroup
Quaker Capital Investments, LLC457,852$17.7M4.33%-17,01313F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP417,536$16.2M0.01%+222,09813F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC261,788$10.1M<0.01%-11,41813F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP245,163$9.48M<0.01%+6,15713F-HRTimelineGroup
Dana Investment Advisors, Inc.235,235$9.1M0.27%-53413F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp224,256$8.67M<0.01%-7,07513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY221,536$8.57M<0.01%+11,60813F-HRTimelineGroup
CSM Advisors, LLC194,555$7.52M0.18%+17,07513F-HRTimeline
Invesco Ltd.in group Invesco Ltd.185,586$7.18M<0.01%-26,84713F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…183,221$7.09M0.01%-26,98813F-HRTimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …162,072$6.27M<0.01%new13F-HRTimelineGroup
HUNTINGTON NATIONAL BANKin group HUNTINGTON NATIONAL BANK157,099$6.08M0.03%-7,45213F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC147,526$5.71M0.11%+7,39813F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC146,949$5.68M0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC144,845$5.6M<0.01%+8,76513F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC135,586$5.24M<0.01%+19,11313F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …129,850$5.02M0.01%+3013F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/128,948$4.99M<0.01%+27,43313F-HRTimelineGroup
SEIZERT CAPITAL PARTNERS, LLC113,135$4.38M0.2%+73413F-HRTimeline
O'SHAUGHNESSY ASSET MANAGEMENT, LLC109,854$4.25M0.02%+5,67513F-HRTimeline
Empowered Funds, LLC96,573$3.74M0.02%+7,39813F-HR/ATimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC95,467$3.69M<0.01%+48113F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding91,508$3.54M+1,395Timeline
LORD, ABBETT & CO. LLC90,000$3.48M0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO90,679$3.47M<0.01%+20,72413F-HR/ATimelineGroup
HRT FINANCIAL LP85,775$3.32M0.01%+41,24713F-HRTimeline
KESTREL INVESTMENT MANAGEMENT CORP83,450$3.23M1.93%-30013F-HRTimeline
Santori & Peters, Inc.79,006$3.06M0.95%013F-HRTimeline
JB CAPITAL PARTNERS LP78,101$3.02M0.52%+8,10113F-HRTimeline
Public Sector Pension Investment Board70,219$2.72M0.01%+2,35413F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO69,979$2.71M<0.01%+32,65813F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.67,853$2.62M<0.01%-27413F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP64,141$2.48M<0.01%+1,78013F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC63,810$2.47M<0.01%+11,55913F-HRTimelineGroup
Nuveen, LLCin group TIAA63,119$2.44M<0.01%-45013F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources62,443$2.42M<0.01%+49,08213F-HRTimelineGroup
IRONWOOD INVESTMENT MANAGEMENT LLC59,416$2.3M0.96%-18,00013F-HRTimeline
RHUMBLINE ADVISERS57,867$2.24M<0.01%+35813F-HRTimeline
Villanova Investment Management Co LLC55,835$2.16M2.21%-15,82213F-HRTimeline
DENALI ADVISORS LLC54,965$2.13M0.24%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC52,015$2.01M<0.01%+22,45613F-HRTimelineGroup
Pacific Ridge Capital Partners, LLC43,489$1.68M0.36%+3,92113F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc43,017$1.66M<0.01%-5,35813F-HRTimelineGroup
Waterfront Wealth Inc.41,495$1.61M0.29%-11,67313F-HRTimeline
Swiss National Bank39,300$1.52M<0.01%013F-HRTimeline
Engineers Gate Manager LP38,443$1.49M0.02%-9,78513F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC37,150$1.44M<0.01%-1,00013F-HRTimeline
Numerai GP LLC36,329$1.41M0.14%+18,33313F-HRTimeline
STATE OF WISCONSIN INVESTMENT BOARD33,744$1.31M<0.01%+16,32613F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…31,638$1.22M<0.01%+21,50013F-HRTimelineGroup
NOMURA ASSET MANAGEMENT INTERNATIONAL I…in group NOMURA ASSET MANAGEMENT CO LTD30,600$1.18M<0.01%-7,10013F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC30,319$1.17M<0.01%-23513F-HRTimelineGroup
Trexquant Investment LP29,524$1.14M0.01%-6,42313F-HRTimeline
GAMCO INVESTORS, INC. ET ALin group GAMCO Investors (Gabelli)28,814$1.11M0.01%-1,90013F-HRTimelineGroup
GLOBEFLEX CAPITAL L P27,190$1.05M0.16%013F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC26,835$1.04M<0.01%new13F-HRTimelineGroup
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …26,611$1.03M<0.01%+26,11413F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/24,891$963K<0.01%+3,91113F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd24,649$953K0.02%+39413F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…24,565$950K<0.01%new13F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC21,395$828K<0.01%-57,63413F-HRTimelineGroup
Skylands Capital, LLC21,050$814K0.11%-59,70013F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND20,470$792K<0.01%+14,30013F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC20,098$777K<0.01%-38,99513F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC19,929$771K<0.01%+77013F-HRTimelineGroup
Quantinno Capital Management LP19,839$767K<0.01%+3,97813F-HRTimeline
Horizon Investments, LLC18,828$728K0.01%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…18,708$724K<0.01%-14013F-HRTimeline
HANCOCK WHITNEY CORP17,667$721K0.01%+80213F-HRTimeline
KLP KAPITALFORVALTNING AS18,400$712K<0.01%013F-HRTimeline
Creative Planningin group Creative Planning18,394$711K<0.01%+2,13613F-HRTimelineGroup
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co17,400$672K<0.01%013F-HRTimelineGroup
Boston Partnersin group Boston Trust Walden Corp16,578$641K<0.01%-5,50213F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\16,403$634K<0.01%+2,35613F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…15,933$616K<0.01%+15,71413F-HRTimelineGroup
EntryPoint Capital, LLC15,512$600K0.18%-9,20413F-HRTimeline
Vident Advisory, LLCin group Vident Advisory, LLC15,460$598K0.01%new13F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC20,013$595K<0.01%-4,00313F-HRTimelineGroup
State of Tennessee, Department of Treas…15,256$590K<0.01%013F-HRTimeline
Marble Wealth, LLC15,085$583K0.1%013F-HRTimeline
HARBOR CAPITAL ADVISORS, INC.14,733$570K0.05%+6,35513F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC14,451$559K<0.01%-3413F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management14,356$555K<0.01%new13F-HRTimelineGroup
Allspring Global Investments Holdings, …in group Allspring Global Investments …13,694$530K<0.01%+1,41413F-HRTimelineGroup
Kennondale Capital Management LLC13,578$525K0.38%013F-HRTimeline
ALLIANCEBERNSTEIN L.P.18,803$509K<0.01%+1,18013F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…13,092$506K<0.01%-38613F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.12,511$484K<0.01%-7,89413F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC11,431$442K<0.01%-62,14113F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…11,217$434K<0.01%013F-HRTimelineGroup
Brooklyn Investment Group10,982$425K0.01%new13F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC10,793$417K<0.01%+22113F-HRTimelineGroup
State of Alaska, Department of Revenue10,700$413K<0.01%013F-HRTimeline
Bristlecone Value Partners, LLC10,650$412K0.36%013F-HRTimeline
J. Safra Sarasin Holding AGin group J. Safra Sarasin Holding AG10,255$397K0.01%new13F-HRTimelineGroup
EP Wealth Advisors, LLC10,240$396K<0.01%new13F-HRTimeline
Illinois Municipal Retirement Fund10,201$395K0.01%-90113F-HRTimeline
PDT Partners, LLC9,583$371K0.02%-3,80013F-HRTimeline
Campbell & CO Investment Adviser LLC9,281$359K0.02%-12,37613F-HRTimeline
JANUS HENDERSON GROUP PLCin group Janus Henderson9,208$355K<0.01%013F-HR/ATimelineGroup
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…9,005$348K<0.01%+20413F-HRTimelineGroup
Janney Montgomery Scott LLC8,992$348K<0.01%new13F-HRTimeline
Louisiana State Employees Retirement Sy…8,700$337K0.01%-30013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC8,585$332K<0.01%-27,35413F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC8,477$323K<0.01%new13F-HRTimelineGroup
DGS Capital Management, LLCin group DGS Capital Management, LLC8,343$323K0.05%new13F-HRTimelineGroup
ROYCE & ASSOCIATES LP8,237$319K<0.01%new13F-HRTimeline
Daytona Street Capital LLC8,000$306K0.24%013F-HRTimeline
Quadrature Capital Ltdin group Quadrature Capital Ltd7,429$287K<0.01%new13F-HRTimelineGroup
Baird Financial Group, Inc.in group Baird Financial Group, Inc.7,385$286K<0.01%new13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN7,325$283K<0.01%-14,05813F-HR/ATimelineGroup
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC7,133$276K<0.01%new13F-HRTimelineGroup
Atria Investments, Inc6,987$270K<0.01%new13F-HRTimeline
State of Wyoming6,704$259K0.03%-7,53113F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…6,291$243K<0.01%-2,78313F-HRTimeline
MANGROVE PARTNERS IM, LLC5,752$222K0.02%-16,98013F-HRTimeline
D.B. Root & Company, LLC5,705$221K0.05%new13F-HRTimeline
AMALGAMATED BANK5,623$217K<0.01%-13913F-HRTimeline
QUADRANT CAPITAL GROUP LLC5,568$215K0.01%-8613F-HR/ATimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC5,560$215K<0.01%-42,91013F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC5,500$213K<0.01%-2,40013F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM5,388$208K<0.01%new13F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC5,380$208K<0.01%-15,57913F-HRTimelineGroup
Police & Firemen's Retirement System of…5,334$206K<0.01%013F-HRTimeline
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC5,297$205K<0.01%+1,07013F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…5,290$205K<0.01%+913F-HRTimelineGroup
YOUSIF CAPITAL MANAGEMENT, LLC5,251$203K<0.01%new13F-HRTimeline
DekaBank Deutsche Girozentrale5,222$203K<0.01%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …5,180$200K<0.01%new13F-HRTimelineGroup
TEACHERS RETIREMENT SYSTEM OF THE STATE…4,990$193K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS4,674$181K<0.01%-3,27813F-HRTimelineGroup
OREGON PUBLIC EMPLOYEES RETIREMENT FUND4,520$175K<0.01%+813F-HRTimeline
SG Americas Securities, LLC4,246$164K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP3,161$120K<0.01%+2,94013F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…3,017$117K<0.01%-27,08213F-HRTimeline
CWM, LLCin group CWM, LLC2,800$108K<0.01%-23313F-HRTimelineGroup
FMR LLCin group FMR LLC2,625$102K<0.01%-16613F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…2,575$99.6K<0.01%-4,94013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,485$96K<0.01%-25,82413F-HRTimelineGroup
Copeland Capital Management, LLC2,190$84.7K<0.01%+16013F-HRTimeline
Ensign Peak Advisors, Inc2,170$83.9K<0.01%013F-HR/ATimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,920$74.3K<0.01%+72813F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…1,614$62.4K<0.01%013F-HRTimelineGroup
FINANCIAL CONSULATE, INC1,500$58K0.01%013F-HRTimeline
GAMMA Investing LLC965$37.3K<0.01%+11513F-HRTimeline
Versant Capital Management, Inc729$28.2K<0.01%013F-HRTimeline
Parallel Advisors, LLC726$28.1K<0.01%+7713F-HR/ATimeline
NISA INVESTMENT ADVISORS, LLC646$25K<0.01%+14213F-HRTimeline
Sterling Capital Management LLC626$24.2K<0.01%-46413F-HRTimeline
BROWN, LISLE/CUMMINGS, INC.617$23.9K0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\550$21.3K<0.01%-613F-HRTimelineGroup
Blue Trust, Inc.497$19.2K<0.01%+2513F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…482$18.7K<0.01%+25813F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.416$16.1K<0.01%+7713F-HRTimelineGroup
Pinnacle Wealth Planning Services, Inc.405$15.7K<0.01%+1313F-HRTimeline
Salomon & Ludwin, LLC373$13.9K<0.01%+13613F-HRTimeline
WealthCollab, LLC322$12.5K0.01%013F-HRTimeline
HANTZ FINANCIAL SERVICES, INC.316$12K<0.01%+313F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…216$8.35K<0.01%-313F-HR/ATimelineGroup
Smartleaf Asset Management LLC207$7.92K<0.01%-34513F-HRTimeline
Allworth Financial LP203$7.85K<0.01%+2113F-HRTimeline
TRUST CO OF TOLEDO NA /OH/191$7.39K<0.01%013F-HRTimeline
Essential Partners LLC188$7.27K<0.01%-213F-HRTimeline
Farther Finance Advisors, LLC186$7K<0.01%+17313F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC156$6.03K<0.01%013F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC148$6K<0.01%013F-HRTimelineGroup
LRI Investments, LLC146$5.65K<0.01%013F-HRTimeline
Arax Advisory Partners112$4.33K<0.01%+413F-HRTimeline
SIGNATUREFD, LLC103$3.98K<0.01%013F-HRTimeline
IFP Advisors, Inc87$3.37K<0.01%-4113F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…80$3.09K<0.01%013F-HRTimelineGroup
Kilter Group LLC60$2.32K<0.01%new13F-HRTimeline
UMB Bank, n.a.54$2.09K<0.01%+213F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
Root Financial Partners, LLC50$1.93K<0.01%new13F-HRTimeline
Keating Financial Advisory Services, In…49$1.9K<0.01%new13F-HRTimeline
Parkside Financial Bank & Trust39$1.51K<0.01%013F-HRTimeline
Cedar Mountain Advisors, LLC35$1.35K<0.01%-613F-HRTimeline
Covestor Ltd32$1K<0.01%+113F-HRTimeline
ROTHSCHILD INVESTMENT LLC15$580<0.01%013F-HRTimeline
MAI Capital Management13$503<0.01%+613F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…13$503<0.01%013F-HRTimelineGroup
Sunbelt Securities, Inc.11$425<0.01%013F-HRTimeline
Ankerstar Wealth, LLC7$271<0.01%013F-HRTimeline
True Wealth Design, LLC2$78<0.01%-213F-HRTimeline
GILPIN WEALTH MANAGEMENT, LLC2$78<0.01%new13F-HRTimeline
SBI Securities Co., Ltd.1$39<0.01%013F-HRTimeline
Capital Advisors, Ltd. LLC12$00%013F-HRTimelineValue filed as zero, left out of ratios.

Events

  • DIMENSIONAL FUND ADVISORS LP reported 1,265,529 KOP shares, 6.7% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-08. 0000354204-26-001043

    Accepted , ingested