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STATE OF WISCONSIN INVESTMENT BOARD

Position in KOP — Koppers Holdings Inc.

CIK 854157 MADISON, WI

Position in KOP

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$1,305,217
+$833,538 QoQ
Shares Held
33,744
+93.7% QoQ
Ownership
0.175%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2020
17 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in KOP Over Time

Shares Held

Position Value (USD)

Position in Specialty Chemicals

Basic Materials · as of Mar 31, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $388,426,800 across 35 Specialty Chemicals names. KOP ranks #21 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in KOP

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17 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,305,217 33,744
2025-12-31 $471,679 17,418
2025-09-30 $1,135,820 40,565
2025-06-30 $1,754,264 54,565
2025-03-31 $495,936 17,712
2024-06-30 $555,441 15,016
2024-03-31 $796,654 14,440
2023-12-31 $475,270 9,279
2023-09-30 $630,347 15,938
2023-06-30 $444,800 13,044
2023-03-31 $704,016 20,132
2022-12-31 $896,901 31,805
2022-09-30 $688,732 33,144
2022-06-30 $776,461 34,296
2022-03-31 $473,344 17,200
2020-12-31 $296,020 9,500
2020-09-30 $324,105 15,500