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Equibles

IRONWOOD INVESTMENT MANAGEMENT LLC

Position in KOP — Koppers Holdings Inc.

CIK 1127761 BOSTON, MA
Back to KOP Full portfolio

Position in KOP

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$2,609,408
+$311,198 QoQ
Shares Held
58,116
-2.2% QoQ
Ownership
0.307%
of shares outstanding
% of Portfolio
1.16%
of 13F equity value
Holder Rank
#45
of 217 holders
Holding Since
Mar 2020
26 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 Jun 30, 2026

IRONWOOD INVESTMENT MANAGEMENT LLC holds $5,626,131 across 4 Specialty Chemicals names. KOP ranks #1 (46.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 KOP
Koppers Holdings Inc.
This page 		58,116 $2,609,408
2 CBT
Cabot Corp
 17,998 $1,634,578
3 ASPN
Aspen Aerogels Inc
 179,301 $1,136,768
4 AVNT
Avient Corp
 6,639 $245,377

All Filings in KOP

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,609,408 58,116
2026-03-31 $2,298,210 59,416
2025-12-31 $2,096,425 77,416
2025-09-30 $2,307,648 82,416
2025-06-30 $2,649,674 82,416
2025-03-31 $2,405,648 85,916
2024-12-31 $2,783,678 85,916
2024-09-30 $2,882,801 78,916
2024-06-30 $2,567,697 69,416
2024-03-31 $5,522,296 100,096
2023-12-31 $4,571,692 89,256
2023-09-30 $3,561,714 90,056
2023-06-30 $3,070,909 90,056
2023-03-31 $3,254,168 93,056
2022-12-31 $2,708,779 96,056
2022-09-30 $2,016,823 97,056
2022-06-30 $2,197,347 97,056
2022-03-31 $2,720,517 98,856
2021-12-31 $3,094,192 98,856
2021-09-30 $3,137,128 100,356
2021-06-30 $3,292,453 101,776
2021-03-31 $3,537,733 101,776
2020-12-31 $3,031,120 97,276
2020-09-30 $2,097,189 100,296
2020-06-30 $1,832,679 97,276
2020-03-31 $1,014,043 81,976