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Koppers Holdings Inc (KOP)

CUSIP: 50060P106 | NYSE | Basic Materials · Specialty Chemicals | Small Cap | 727 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
CompareDetailedHistoricalFundsOptions13D/13GPeersTargetingTrading SummaryProfile

Beneficial Ownership — 13D / 13G

Full history →

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13D/ASimcoe Capital Management, LLC
with Simcoe Management Company, LLC, Simcoe Partners L P, Simcoe Select, LP, +1 more
1,063,2795.6%−285,726Oct 20, 2026112d ahead of 13F (1,416,160 sh) · −352,881
13GVanguard Capital Management LLC954,2825.0%−868Sep 30, 202692d ahead of 13F (812,629 sh) · +141,653
13D/ASimcoe Capital Management, LLC1,063,279
5.6% of class · Oct 20, 2026−285,726
with Simcoe Management Company, LLC, Simcoe Partners L P, Simcoe Select, LP, +1 more
112d ahead of 13F (1,416,160 sh) · −352,881
13GVanguard Capital Management LLC954,282
5.0% of class · Sep 30, 2026−868
92d ahead of 13F (812,629 sh) · +141,653

Institutional Holders — Q3 2026

Dimensional Fund Advisors LP1,265,529
0.0% of portfolio›$57.7M
Pzena Investment Management LLC926,505
0.1% of portfolio›$42.2M
Principal Financial Group Inc112,125
0.0% of portfolio›$5.1M
Seizert Capital Partners, LLC94,790
0.2% of portfolio›$4.3M
Santori & Peters, Inc.83,834
1.0% of portfolio›$3.8M
Kestrel Investment Management Corp78,650
2.1% of portfolio›$3.6M
Creative Planning52,848
0.0% of portfolio›$2.4M
Citigroup Inc37,791
0.0% of portfolio›$1.7M
Villanova Investment Management Co36,559
1.7% of portfolio›$1.7M
SummerHaven Investment Management, LLC19,229
0.5% of portfolio›$876.7K
Harbor Capital Advisors, Inc.19,219
0.0% of portfolio›$876
Allspring Global Investments Holdings, LLC14,738
0.0% of portfolio›$666.0K
DekaBank Deutsche Girozentrale11,547
0.0% of portfolio›$526
Strs Ohio11,100
0.0% of portfolio›$506.0K
Virginia Retirement Systems ET Al10,600
0.0% of portfolio›$483.3K
Illinois Municipal Retirement Fund9,887
0.0% of portfolio›$450.7K
Louisiana State Employees Retirement System8,100
0.0% of portfolio›$369.3K
Sterling Capital Management LLC6,666
0.0% of portfolio›$303.9K
Atria Investments, Inc6,268
0.0% of portfolio›$285.8K
State of Wyoming6,097
0.0% of portfolio›$278.0K
D.B. Root & Company, LLC5,705
0.1% of portfolio›$260.1K
Quadrant Capital Group LLC5,658
0.0% of portfolio›$251.3K
Yousif Capital Management, LLC4,895
0.0% of portfolio›$223.2K
Amalgamated Bank4,885
0.0% of portfolio›$223
Swiss Life Asset Management Ltd4,871
0.0% of portfolio›$222.1K
Arizona State Retirement System4,740
0.0% of portfolio›$216.1K
Wealth Enhancement Advisory Services, LLC4,574
0.0% of portfolio›$202.4K
Kestra Advisory Services, LLC4,510
0.0% of portfolio›$205.6K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS4,456
0.0% of portfolio›$203.1K
Oregon Public Employees Retirement Fund4,258
0.0% of portfolio›$194.1K
State of Alaska, Department of Revenue3,845
0.0% of portfolio›$174
Copeland Capital Management, LLC2,098
0.0% of portfolio›$95.6K
Nisa Investment Advisors, LLC2,037
0.0% of portfolio›$92.9K
Simplex Trading, LLC1,982
0.0% of portfolio›$90.4K
Financial Consulate, Inc1,503
0.0% of portfolio›$68.5K
Mirae Asset Global Investments Co., Ltd.1,232
0.0% of portfolio›$56.2K
Gamma Investing LLC1,089
0.0% of portfolio›$49.6K
Parallel Advisors, LLC753
0.0% of portfolio›$34.3K
Versant Capital Management, Inc715
0.0% of portfolio›$32.6K
Assetmark, Inc676
0.0% of portfolio›$30.8K
Brown, Lisle Ings, Inc.617
0.0% of portfolio›$28.1K
New York State Teachers Retirement System584
0.0% of portfolio›$27
Blue Trust, Inc.541
0.0% of portfolio›$24.7K
Pinnacle Wealth Planning Services, Inc.379
0.0% of portfolio›$17.3K
Salomon & Ludwin, LLC373
0.0% of portfolio›$17.0K
Signaturefd, LLC274
0.0% of portfolio›$12.5K
Covestor Ltd257
0.0% of portfolio›$12
Farther Finance Advisors, LLC202
0.0% of portfolio›$9.2K
Trust Co of Toledo NA191
0.0% of portfolio›$8.7K
Skylands Capital, LLC175
0.0% of portfolio›$8.0K
Essential Partners LLC164
0.0% of portfolio›$7.5K
EverSource Wealth Advisors, LLC149
0.0% of portfolio›$6.8K
SJS Investment Consulting Inc.109
0.0% of portfolio›$5.0K
IFP Advisors, Inc72
0.0% of portfolio›$3.3K
Root Financial Partners, LLC67
0.0% of portfolio›$3.1K
Larson Financial Group LLC58
0.0% of portfolio›$2.6K
MassMutual Private Wealth & Trust, FSB52
0.0% of portfolio›$2.4K
CoreCap Advisors, LLC49
0.0% of portfolio›$2.2K
Parkside Financial Bank & Trust39
0.0% of portfolio›$1.8K
Cedar Mountain Advisors, LLC35
0.0% of portfolio›$1.6K
Farmers & Merchants Investments Inc18
0.0% of portfolio›$821
Capital Advisors, Ltd. LLC12
0.0% of portfolio›$1
Physician Wealth Advisors, Inc.11
0.0% of portfolio›$502
Davis Capital Management5
0.0% of portfolio›$228
Ascentis Wealth Management, LLC5
0.0% of portfolio›$227
JFS Wealth Advisors, LLC3
0.0% of portfolio›$137
True Wealth Design, LLC2
0.0% of portfolio›$92
Gilpin Wealth Management, LLC2
0.0% of portfolio›$92
TFC Financial Management, Inc.1
0.0% of portfolio›$46
SBI Securities Co., Ltd.1
0.0% of portfolio›$46
StyleTurnoverLocationFiled
Dimensional Fund Advisors LP
1,265,529$57.7M0.0%IndexLowAustin, TX2026-11-04
Pzena Investment Management LLC
926,505$42.2M0.1%Deep ValueMediumNew York, NY2026-10-30
Principal Financial Group Inc
112,125$5.1M0.0%CoreLowDes Moines, IA2026-11-02
Seizert Capital Partners, LLC
94,790$4.3M0.2%ValueMediumBirmingham, MI2026-10-30
Santori & Peters, Inc.
83,834$3.8M1.0%GrowthVery LowCanonsburg, PA2026-10-26
Kestrel Investment Management Corp
78,650$3.6M2.1%Deep ValueMediumSan Mateo, CA2026-11-02
Creative Planning
52,848$2.4M0.0%IndexVery LowOverland Park, KS2026-11-02
Citigroup Inc
37,791$1.7M0.0%CoreMediumNew York, NY2026-11-04
Villanova Investment Management Co
36,559$1.7M1.7%Deep ValueMediumWayne, PA2026-11-02
SummerHaven Investment Management, LLC
19,229$876.7K0.5%Deep ValueHighStamford, CT2026-10-19
Harbor Capital Advisors, Inc.
19,219$8760.0%ValueHighChicago, IL2026-10-22
Allspring Global Investments Holdings, LLC
14,738$666.0K0.0%CoreMediumCharlotte, NC2026-11-04
DekaBank Deutsche Girozentrale
11,547$5260.0%CoreLowFrankfurt, Hong Kong2026-10-27
Strs Ohio
11,100$506.0K0.0%CoreMediumColumbus, OH2026-10-30
Virginia Retirement Systems ET Al
10,600$483.3K0.0%CoreMediumRichmond, VA2026-10-28
Illinois Municipal Retirement Fund
9,887$450.7K0.0%CoreMediumOak Brook, IL2026-11-05
Louisiana State Employees Retirement System
8,100$369.3K0.0%IndexLowBaton Rouge, LA2026-10-20
Sterling Capital Management LLC
6,666$303.9K0.0%GARPMediumCharlotte, NC2026-10-22
Atria Investments, Inc
6,268$285.8K0.0%CoreMediumCharlotte, NC2026-10-15
State of Wyoming
6,097$278.0K0.0%ValueHighCheyenne, WY2026-10-28
D.B. Root & Company, LLC
5,705$260.1K0.1%ETFLowPittsburgh, PA2026-11-04
Quadrant Capital Group LLC
5,658$251.3K0.0%CoreLowCincinnati, OH2026-10-20
Yousif Capital Management, LLC
4,895$223.2K0.0%IndexVery LowBloomfield Hills, MI2026-10-22
Amalgamated Bank
4,885$2230.0%CoreVery LowNew York, NY2026-10-23
Swiss Life Asset Management Ltd
4,871$222.1K0.0%CoreLowZurich, Switzerland2026-11-03
Arizona State Retirement System
4,740$216.1K0.0%IndexVery LowPhoenix, AZ2026-11-03
Wealth Enhancement Advisory Services, LLC
4,574$202.4K0.0%CoreLowPlymouth, MN2026-10-13
Kestra Advisory Services, LLC
4,510$205.6K0.0%CoreLowAustin, TX2026-11-02
Commonwealth of Pennsylvania Public School Empls Retrmt SYS
4,456$203.1K0.0%CoreLowHarrisburg, PA2026-11-03
Oregon Public Employees Retirement Fund
4,258$194.1K0.0%IndexVery LowTigard, OR2026-10-30
State of Alaska, Department of Revenue
3,845$1740.0%CoreVery LowJuneau, AK2026-10-15
Copeland Capital Management, LLC
2,098$95.6K0.0%ValueMediumConshohocken, PA2026-10-13
Nisa Investment Advisors, LLC
2,037$92.9K0.0%IndexVery LowSt. Louis, MO2026-10-20
Simplex Trading, LLC
1,982$90.4K0.0%CoreVery HighChicago, IL2026-11-04
Financial Consulate, Inc
1,503$68.5K0.0%ETFLowHunt Valley, MD2026-10-23
Mirae Asset Global Investments Co., Ltd.
1,232$56.2K0.0%GrowthLowSeoul, Malaysia2026-11-03
Gamma Investing LLC
1,089$49.6K0.0%IndexVery LowFoster City, CA2026-10-08
Parallel Advisors, LLC
753$34.3K0.0%IndexLowSan Francisco, CA2026-11-03
Versant Capital Management, Inc
715$32.6K0.0%GARPLowPhoenix, AZ2026-10-02
Assetmark, Inc
676$30.8K0.0%ETFLowConcord, CA2026-10-21
Brown, Lisle Ings, Inc.
617$28.1K0.0%CoreVery LowProvidence, RI2026-10-16
New York State Teachers Retirement System
584$270.0%CoreVery LowAlbany, NY2026-10-22
Blue Trust, Inc.
541$24.7K0.0%ETFLowBrentwood, TN2026-10-15
Pinnacle Wealth Planning Services, Inc.
379$17.3K0.0%GARPLowMansfield, OH2026-10-27
Salomon & Ludwin, LLC
373$17.0K0.0%ETFVery LowRichmond, VA2026-10-29
Signaturefd, LLC
274$12.5K0.0%IndexLowAtlanta, GA2026-10-23
Covestor Ltd
257$120.0%ValueHighLondon, United Kingdom2026-10-30
Farther Finance Advisors, LLC
202$9.2K0.0%IndexLowSan Francisco, CA2026-10-08
Trust Co of Toledo NA
191$8.7K0.0%GrowthVery LowHolland, OH2026-10-16
Skylands Capital, LLC
175$8.0K0.0%ValueMediumMilwaukee, WI2026-10-21
Essential Partners LLC
164$7.5K0.0%ValueMediumRancho Santa Fe, CA2026-10-14
EverSource Wealth Advisors, LLC
149$6.8K0.0%CoreMediumBirmingham, AL2026-11-04
SJS Investment Consulting Inc.
109$5.0K0.0%ETFVery LowSylvania, OH2026-10-26
IFP Advisors, Inc
72$3.3K0.0%GrowthLowTampa, FL2026-10-16
Root Financial Partners, LLC
67$3.1K0.0%ETFMediumEncinitas, CA2026-10-21
Larson Financial Group LLC
58$2.6K0.0%GrowthLowSt Louis, MO2026-11-05
MassMutual Private Wealth & Trust, FSB
52$2.4K0.0%CoreLowSpringfield, MA2026-10-05
CoreCap Advisors, LLC
49$2.2K0.0%ETFMediumSouthfield, MI2026-10-08
Parkside Financial Bank & Trust
39$1.8K0.0%CoreVery LowSaint Louis, MO2026-10-27
Cedar Mountain Advisors, LLC
35$1.6K0.0%ETFVery LowLake Oswego, OR2026-10-15
Farmers & Merchants Investments Inc
18$8210.0%CoreVery LowLincoln, NE2026-10-22
Capital Advisors, Ltd. LLC
12$10.0%ETFLowShaker Heights, OH2026-10-27
Physician Wealth Advisors, Inc.
11$5020.0%ETFMediumMidvale, UT2026-10-20
Davis Capital Management
5$2280.0%CoreLowJacksonville, FL2026-10-08
Ascentis Wealth Management, LLC
5$2270.0%Agg GrowthLowDallas, TX2026-11-03
JFS Wealth Advisors, LLC
3$1370.0%ETFVery LowHermitage, PA2026-11-03
True Wealth Design, LLC
2$920.0%ETFMediumAkron, OH2026-10-13
Gilpin Wealth Management, LLC
2$920.0%GrowthLowDenver, CO2026-10-09
TFC Financial Management, Inc.
1$460.0%ETFVery LowBoston, MA2026-10-26
SBI Securities Co., Ltd.
1$460.0%Agg GrowthLowTokyo, Mexico2026-10-22