Koppers Holdings Inc.
DE ˙ DB ˙ US50060P1066
34,80 € ↓ -1,20 (-3,33%)
2026-06-04
DEL PRIS
SecurityDE:KO9 / Koppers Holdings Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership5,500 shares
Latest Disclosed Value $ 212,740
Renaissance Technologies Llc reports 30.38% decrease in ownership of KO9 / Koppers Holdings Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 5,500 shares of Koppers Holdings Inc. (DE:KO9) valued at $178,200 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 7,900 shares of Koppers Holdings Inc.. This represents a change in shares of -30.38% during the quarter. The current value of the position is $191,400 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)
2026-05-14 2026-03-31 13F KOPPERS HOLDINGS COM 50060P106 5,500 -2,400 -30.38 213 -0.47 0.0003
2026-02-12 2025-12-31 13F KOPPERS HOLDINGS COM 50060P106 7,900 -19,400 -71.06 214 -72.12 0.0003
2025-11-13 2025-09-30 13F KOPPERS HOLDINGS COM 50060P106 27,300 1,300 5.00 764 -8.50 0.0010
2025-08-13 2025-06-30 13F KOPPERS HOLDINGS COM 50060P106 26,000 -18,400 -41.44 836 -32.82 0.0011
2025-05-14 2025-03-31 13F KOPPERS HOLDINGS COM 50060P106 44,400 -112,232 -71.65 1,243 -75.50 0.0019
2025-02-13 2024-12-31 13F KOPPERS HOLDINGS COM 50060P106 156,632 78,732 101.07 5,075 78.35 0.0075
2024-11-13 2024-09-30 13F KOPPERS HOLDINGS COM 50060P106 77,900 -100 -0.13 2,846 -1.39 0.0043
2024-08-09 2024-06-30 13F KOPPERS HOLDINGS COM 50060P106 78,000 8,300 11.91 2,885 96,066.67 0.0049
2024-05-13 2024-03-31 13F KOPPERS HOLDINGS COM 50060P106 69,700 -17,100 -19.70 4 -25.00 0.0060
2024-02-13 2023-12-31 13F KOPPERS HOLDINGS COM 50060P106 86,800 58,700 208.90 4 300.00 0.0069
2023-11-14 2023-09-30 13F KOPPERS HOLDINGS COM 50060P106 28,100 12,900 84.87 1 0.0019
2023-08-11 2023-06-30 13F KOPPERS HOLDINGS COM 50060P106 15,200 8,200 117.14 1 0.0007
2023-05-12 2023-03-31 13F KOPPERS HOLDINGS COM 50060P106 7,000 7,000 0 0.0003
2022-11-14 2022-09-30 13F KOPPERS HOLDINGS COM 50060P106 0 -13,800 -100.00 0 -100.00
2022-08-12 2022-06-30 13F KOPPERS HOLDINGS COM 50060P106 13,800 -21,400 -60.80 312 -67.80 0.0004
2022-05-13 2022-03-31 13F KOPPERS HOLDINGS COM 50060P106 35,200 35,200 969 0.0011
2020-08-13 2020-06-30 13F KOPPERS HOLDINGS COM 50060P106 0 -65,300 -100.00 0 -100.00
2020-05-14 2020-03-31 13F KOPPERS HOLDINGS COM 50060P106 65,300 -34,500 -34.57 808 -78.81 0.0008
2020-02-13 2019-12-31 13F KOPPERS HOLDINGS COM 50060P106 99,800 56,500 130.48 3,814 201.50 0.0029
2019-11-13 2019-09-30 13F KOPPERS HOLDINGS COM 50060P106 43,300 43,300 -56.61 1,265 -66.83 0.0011
2019-05-14 2019-03-31 13F KOPPERS HOLDINGS COM 50060P106 0 -183,700 -100.00 0 -100.00
2019-02-12 2018-12-31 13F KOPPERS HOLDINGS COM 50060P106 183,700 -181,206 -49.66 3,130 -72.46 0.0034
2018-11-13 2018-09-30 13F KOPPERS HOLDINGS COM 50060P106 364,906 -6,294 -1.70 11,367 -20.15 0.0117
2018-08-13 2018-06-30 13F/A-1 KOPPERS HOLDINGS COM 50060P106 371,200 -100 -0.03 14,236 -6.71 0.0155
2018-08-13 2018-06-30 13F KOPPERS HOLDINGS COM 50060P106 371,300 15,260
2018-05-14 2018-03-31 13F KOPPERS HOLDINGS COM 50060P106 371,300 39,900 12.04 15,260 -9.53 0.0167
2018-02-13 2017-12-31 13F KOPPERS HOLDINGS COM 50060P106 331,400 118,400 55.59 16,868 71.60 0.0186
2017-11-13 2017-09-30 13F KOPPERS HOLDINGS COM 50060P106 213,000 29,300 15.95 9,830 48.02 0.0116
2017-08-11 2017-06-30 13F KOPPERS HOLDINGS COM 50060P106 183,700 5,700 3.20 6,641 -11.90 0.0085
2017-05-12 2017-03-31 13F KOPPERS HOLDINGS COM 50060P106 178,000 31,400 21.42 7,538 27.59 0.0105
2017-02-13 2016-12-31 13F KOPPERS HOLDINGS COM 50060P106 146,600 42,200 40.42 5,908 75.83 0.0093
2016-11-14 2016-09-30 13F KOPPERS HOLDINGS COM 50060P106 104,400 35,600 51.74 3,360 58.94 0.0059
2016-08-12 2016-06-30 13F KOPPERS HOLDINGS COM 50060P106 68,800 68,800 -34.10 2,114 -37.08 0.0040
2016-05-13 2016-03-31 13F KOPPERS HOLDINGS COM 50060P106 0 -116,400 -100.00 0 -100.00
2016-02-11 2015-12-31 13F KOPPERS HOLDINGS COM 50060P106 116,400 67,300 137.07 2,124 114.55 0.0046
2015-11-12 2015-09-30 13F KOPPERS HOLDINGS COM 50060P106 49,100 49,100 -57.82 990 -53.39 0.0024
2015-05-13 2015-03-31 13F KOPPERS HOLDINGS COM 50060P106 0 -107,200 -100.00 0 -100.00
2015-02-13 2014-12-31 13F KOPPERS HOLDINGS COM 50060P106 107,200 -136,049 -55.93 2,785 -65.47 0.0067
2014-11-12 2014-09-30 13F KOPPERS HOLDINGS COM 50060P106 243,249 -87,351 -26.42 8,066 -36.21 0.0221
2014-08-13 2014-06-30 13F KOPPERS HOLDINGS COM 50060P106 330,600 18,508 5.93 12,645 -1.73 0.0295
2014-05-14 2014-03-31 13F KOPPERS HOLDINGS COM 50060P106 312,092 170,392 120.25 12,868 98.49 0.0309
2014-02-14 2013-12-31 13F KOPPERS HOLDINGS COM 50060P106 141,700 33,000 30.36 6,483 39.84 0.0155
2013-11-13 2013-09-30 13F KOPPERS HOLDINGS COM 50060P106 108,700 -10,400 -8.73 4,636 1.96 0.0112
2013-08-12 2013-06-30 13F KOPPERS HOLDINGS COM 50060P106 119,100 119,100 4,547 0.0119
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.