Koppers Holdings Inc.
DE ˙ DB ˙ US50060P1066
34,20 € ↑0,40 (1,18%)
2026-06-01
AKTIENPREIS
SecurityDE:KO9 / Koppers Holdings Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership52,015 shares
Latest Disclosed Value $ 2,011,940
Millennium Management Llc reports 75.97% increase in ownership of KO9 / Koppers Holdings Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 52,015 shares of Koppers Holdings Inc. (DE:KO9) valued at $1,685,286 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 29,559 shares of Koppers Holdings Inc.. This represents a change in shares of 75.97% during the quarter. The current value of the position is $1,778,913 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F KOPPERS HOLDINGS COM 50060P106 52,015 22,456 75.97 2,012 151.38 0.0008
2026-02-17 2025-12-31 13F KOPPERS HOLDINGS COM 50060P106 29,559 -43,579 -59.58 800 -60.92 0.0003
2025-11-14 2025-09-30 13F KOPPERS HOLDINGS COM 50060P106 73,138 -227,687 -75.69 2,048 -78.83 0.0009
2025-08-14 2025-06-30 13F KOPPERS HOLDINGS COM 50060P106 300,825 60,019 24.92 9,672 43.44 0.0047
2025-05-15 2025-03-31 13F KOPPERS HOLDINGS COM 50060P106 240,806 -66,829 -21.72 6,743 -32.36 0.0036
2025-02-14 2024-12-31 13F KOPPERS HOLDINGS COM 50060P106 307,635 -12,734 -3.97 9,967 -14.83 0.0049
2024-11-14 2024-09-30 13F KOPPERS HOLDINGS COM 50060P106 320,369 123,665 62.87 11,703 60.84 0.0055
2024-08-14 2024-06-30 13F KOPPERS HOLDINGS COM 50060P106 196,704 168,063 586.79 7,276 360.51 0.0034
2024-05-15 2024-03-31 13F KOPPERS HOLDINGS COM 50060P106 28,641 -1,466 -4.87 1,580 2.46 0.0007
2024-02-14 2023-12-31 13F KOPPERS HOLDINGS COM 50060P106 30,107 3,556 13.39 1,542 46.86 0.0007
2023-11-14 2023-09-30 13F KOPPERS HOLDINGS COM 50060P106 26,551 -9,249 -25.84 1,050 -13.93 0.0005
2023-08-14 2023-06-30 13F KOPPERS HOLDINGS COM 50060P106 35,800 28,773 409.46 1,221 395.93 0.0006
2023-05-15 2023-03-31 13F KOPPERS HOLDINGS COM 50060P106 7,027 -20,776 -74.73 246 -68.62 0.0001
2023-02-14 2022-12-31 13F KOPPERS HOLDINGS COM 50060P106 27,803 -318,339 -91.97 784 -89.10 0.0004
2022-11-14 2022-09-30 13F KOPPERS HOLDINGS COM 50060P106 346,142 125,086 56.59 7,193 43.72 0.0043
2022-08-15 2022-06-30 13F KOPPERS HOLDINGS COM 50060P106 221,056 153,118 225.38 5,005 167.65 0.0031
2022-05-16 2022-03-31 13F KOPPERS HOLDINGS COM 50060P106 67,938 57,702 563.72 1,870 484.38 0.0010
2022-02-14 2021-12-31 13F KOPPERS HOLDINGS COM 50060P106 10,236 -1,421 -12.19 320 -12.09 0.0002
2021-11-15 2021-09-30 13F KOPPERS HOLDINGS COM 50060P106 11,657 -29,851 -71.92 364 -72.90 0.0002
2021-08-16 2021-06-30 13F KOPPERS HOLDINGS COM 50060P106 41,508 -52,092 -55.65 1,343 -58.73 0.0008
2021-05-17 2021-03-31 13F KOPPERS HOLDINGS COM 50060P106 93,600 38,563 70.07 3,254 89.74 0.0023
2021-02-16 2020-12-31 13F KOPPERS HOLDINGS COM 50060P106 55,037 -84,060 -60.43 1,715 -41.05 0.0012
2020-11-16 2020-09-30 13F KOPPERS HOLDINGS COM 50060P106 139,097 -139,624 -50.09 2,909 -44.60 0.0036
2020-08-14 2020-06-30 13F KOPPERS HOLDINGS COM 50060P106 278,721 278,721 5,251 0.0072
2020-05-14 2020-03-31 13F KOPPERS HOLDINGS COM 50060P106 0 -28,901 -100.00 0 -100.00
2020-02-14 2019-12-31 13F KOPPERS HOLDINGS COM 50060P106 28,901 -246,783 -89.52 1,105 -86.28 0.0014
2019-11-14 2019-09-30 13F KOPPERS HOLDINGS COM 50060P106 275,684 -16,268 -5.57 8,052 -6.07 0.0127
2019-08-15 2019-06-30 13F/A-1 KOPPERS HOLDINGS COM 50060P106 291,952 -28,589 -8.92 8,572 2.93 0.0129
2019-08-14 2019-06-30 13F ANHEUSER BUSCH INBEV SPONSORED ADR 50060P106 293,452 -27,089 25,973
2019-05-14 2019-03-31 13F KOPPERS HOLDINGS COM 50060P106 320,541 218,638 214.56 8,328 379.72 0.0125
2019-02-15 2018-12-31 13F/A-1 KOPPERS HOLDINGS COM 50060P106 101,903 -53,210 -34.30 1,736 -64.07 0.0027
2019-02-14 2018-12-31 13F KOPPERS HOLDINGS COM 50060P106 101,903 1,736
2018-11-14 2018-09-30 13F KOPPERS HOLDINGS COM 50060P106 155,113 20,582 15.30 4,832 -6.34 0.0059
2018-08-14 2018-06-30 13F KOPPERS HOLDINGS COM 50060P106 134,531 -156,748 -53.81 5,159 -56.91 0.0067
2018-05-15 2018-03-31 13F KOPPERS HOLDINGS COM 50060P106 291,279 204,402 235.28 11,972 170.74 0.0160
2018-02-14 2017-12-31 13F KOPPERS HOLDINGS COM 50060P106 86,877 -57,071 -39.65 4,422 -33.43 0.0061
2017-11-14 2017-09-30 13F KOPPERS HOLDINGS COM 50060P106 143,948 56,005 63.68 6,643 108.97 0.0101
2017-08-14 2017-06-30 13F KOPPERS HOLDINGS COM 50060P106 87,943 -30,543 -25.78 3,179 -36.65 0.0057
2017-05-15 2017-03-31 13F KOPPERS HOLDINGS COM 50060P106 118,486 14,909 14.39 5,018 20.22 0.0092
2017-02-14 2016-12-31 13F KOPPERS HOLDINGS COM 50060P106 103,577 41,508 66.87 4,174 109.01 0.0087
2016-11-14 2016-09-30 13F KOPPERS HOLDINGS COM 50060P106 62,069 53,744 645.57 1,997 680.08 0.0033
2016-08-15 2016-06-30 13F KOPPERS HOLDINGS COM 50060P106 8,325 -10,315 -55.34 256 -38.90 0.0006
2016-05-16 2016-03-31 13F KOPPERS HOLDINGS COM 50060P106 18,640 -228,367 -92.45 419 -90.71 0.0010
2016-02-16 2015-12-31 13F KOPPERS HOLDINGS COM 50060P106 247,007 -8,304 -3.25 4,508 -12.47 0.0095
2015-11-16 2015-09-30 13F KOPPERS HOLDINGS COM 50060P106 255,311 92,671 56.98 5,150 28.11 0.0100
2015-08-14 2015-06-30 13F KOPPERS HOLDINGS COM 50060P106 162,640 162,640 0.00 4,020 0.0076
2015-05-15 2015-03-31 13F KOPPERS HOLDINGS COM 50060P106 0 -22,862 -100.00 0 -100.00
2015-02-17 2014-12-31 13F KOPPERS HOLDINGS COM 50060P106 22,862 -10,320 -31.10 594 -46.00 0.0013
2014-11-14 2014-09-30 13F KOPPERS HOLDINGS COM 50060P106 33,182 3,640 12.32 1,100 -2.65 0.0028
2014-08-14 2014-06-30 13F KOPPERS HOLDINGS COM 50060P106 29,542 -4,647 -13.59 1,130 -19.86 0.0031
2014-05-15 2014-03-31 13F KOPPERS HOLDINGS COM 50060P106 34,189 -60,506 -63.90 1,410 -67.45 0.0041
2014-02-14 2013-12-31 13F KOPPERS HOLDINGS COM 50060P106 94,695 94,695 195.61 4,332 254.21 0.0137
2013-11-14 2013-09-30 13F KOPPERS HOLDINGS COM 50060P106 0 -32,034 -100.00 0 -100.00
2013-08-14 2013-06-30 13F KOPPERS HOLDINGS COM 50060P106 32,034 32,034 1,223 0.0037
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.