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KOP · Koppers Holdings Inc. · Holdings

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Market Cap
$876.55M
Shares
18.91M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 219
Total Value: $872,300,512
Total Shares: 19,432,849
Showing 1–100 of 219 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 219 13F filers · Δ vs Mar 31, 2026
Top Holder
15.7%
Sep 2023 → Jun 2026 · range 15.7% – 21.1%
−0.2 pts
Top 5
39.7%
Sep 2023 → Jun 2026 · range 38.5% – 54.2%
+1.2 pts
Top 10
60.0%
Sep 2023 → Jun 2026 · range 57.2% – 68.8%
+2.8 pts
HHI
516
Sep 2023 → Jun 2026 · range 498 – 804
Broadly held+18

Quarterly Activity

vs Mar 31, 2026
New
33
Increased
73
Decreased
69
Sold Out
19
Unchanged
44
Holder count: +14
Institutional value: +17.7%
Shares held: +1.4%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 219
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1315257 CUSIP 50060P106 13F (30d) 60 filings 60 filers Visit website Investor relations