KOPPERS HOLDINGS INC · CUSIP 50060P106 · CIK 1127761
As of 2026-06-30, IRONWOOD INVESTMENT MANAGEMENT LLC reported 58.12K KOP (shares), valued at $2.61M, or 0.90% of its reported non-derivative portfolio. Filed 2026-08-14.
Verify history & sources →Shares decreased 2.19%; reported value increased 13.54%, and weight changed -0.06 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 0.90% | 58,116 | SEC filing ↗Filed Aug 14, 2026 |
| Q1 2026 | 0.96% | 59,416 | SEC filing ↗Filed May 15, 2026 |
| Q4 2025 | 0.88% | 77,416 | SEC filing ↗Filed Feb 12, 2026 |
| Q3 2025 | 1.01% | 82,416 | SEC filing ↗Filed Nov 13, 2025 |
| Q2 2025 | 1.29% | 82,416 | SEC filing ↗Filed Aug 13, 2025 |
| Q1 2025 | 1.31% | 85,916 | SEC filing ↗Filed May 15, 2025 |
| Q4 2024 | 1.39% | 85,916 | SEC filing ↗Filed Feb 10, 2025 |
| Q3 2024 | 1.40% | 78,916 | SEC filing ↗Filed Nov 14, 2024 |
| Q2 2024 | 1.37% | 69,416 | SEC filing ↗Filed Aug 16, 2024 |
| Q1 2024 | 2.70% | 100,096 | SEC filing ↗Filed May 15, 2024 |
| Q4 2023 | 2.40% | 89,256 | SEC filing ↗Filed Feb 14, 2024 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q4 2023 | 2.40% | 89,256 | $4.57M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Feb 14, 2024 |
| Q1 2024 | 2.70% | 100,096 | $5.52M | Shares increased 12.14%; reported value increased 20.79%, and weight changed +0.30 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2024 |
| Q2 2024 | 1.37% | 69,416 | $2.57M | Shares decreased 30.65%; reported value decreased 53.50%, and weight changed -1.33 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 16, 2024 |
| Q3 2024 | 1.40% | 78,916 | $2.88M | Shares increased 13.69%; reported value increased 12.27%, and weight changed +0.03 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 14, 2024 |
| Q4 2024 | 1.39% | 85,916 | $2.78M | Shares increased 8.87%; reported value decreased 3.44%, and weight changed -0.01 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 10, 2025 |
| Q1 2025 | 1.31% | 85,916 | $2.41M | Shares unchanged; reported value decreased 13.58%, and weight changed -0.08 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2025 |
| Q2 2025 | 1.29% | 82,416 | $2.65M | Shares decreased 4.07%; reported value increased 10.14%, and weight changed -0.02 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 13, 2025 |
| Q3 2025 | 1.01% | 82,416 | $2.31M | Shares unchanged; reported value decreased 12.91%, and weight changed -0.28 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 13, 2025 |
| Q4 2025 | 0.88% | 77,416 | $2.10M | Shares decreased 6.07%; reported value decreased 9.15%, and weight changed -0.13 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 12, 2026 |
| Q1 2026 | 0.96% | 59,416 | $2.30M | Shares decreased 23.25%; reported value increased 9.63%, and weight changed +0.08 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 15, 2026 |
| Q2 2026 | 0.90% | 58,116 | $2.61M | Shares decreased 2.19%; reported value increased 13.54%, and weight changed -0.06 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 14, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.