Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in KOP held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 3.0M | $117.8M | -17.8% | 15.834% | 0.00% |
| 2 | PZENA INVESTMENT MANAGEMENT LLC | 1.2M | $46.8M | +0.4% | 6.288% | 0.15% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 1.2M | $46.1M | +1.5% | 6.195% | 0.01% |
| 4 | FULLER & THALER ASSET MANAGEMENT, INC. | 979K | $37.9M | -3.5% | 5.088% | 0.13% |
| 5 | Simcoe Capital Management, LLC | 944K | $36.5M | +16.1% | 4.911% | 6.34% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 840K | $32.5M | — | 4.370% | 0.00% |
| 7 | STATE STREET CORP | 752K | $29.1M | -1.6% | 3.912% | 0.00% |
| 8 | AMERICAN CENTURY COMPANIES INC | 535K | $20.7M | +27.6% | 2.782% | 0.01% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 531K | $20.5M | — | 2.759% | 0.00% |
| 10 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 478K | $18.5M | -15.9% | 2.485% | 0.00% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 468K | $18.1M | +2.2% | 2.431% | 0.00% |
| 12 | Quaker Capital Investments, LLC | 458K | $17.7M | -3.6% | 2.381% | 4.33% |
| 13 | TWO SIGMA INVESTMENTS, LP | 418K | $16.2M | +113.6% | 2.171% | 0.01% |
| 14 | AMERIPRISE FINANCIAL INC | 262K | $10.1M | -4.2% | 1.361% | 0.00% |
| 15 | NORTHERN TRUST CORP | 245K | $9.5M | +2.6% | 1.275% | 0.00% |
| 16 | Dana Investment Advisors, Inc. | 235K | $9.1M | -0.2% | 1.223% | 0.27% |
| 17 | Bank of New York Mellon Corp | 224K | $8.7M | -3.1% | 1.166% | 0.00% |
| 18 | MORGAN STANLEY | 222K | $8.6M | +5.5% | 1.152% | 0.00% |
| 19 | Invesco Ltd. | 186K | $7.2M | -12.6% | 0.965% | 0.00% |
| 20 | Russell Investments Group, Ltd. | 183K | $7.1M | -12.8% | 0.953% | 0.01% |
| 21 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 162K | $6.3M | — | 0.843% | 0.00% |
| 22 | HUNTINGTON NATIONAL BANK | 157K | $6.1M | -4.5% | 0.817% | 0.03% |
| 23 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 148K | $5.7M | +5.3% | 0.767% | 0.11% |
| 24 | GOLDMAN SACHS GROUP INC | 145K | $5.6M | +6.4% | 0.753% | 0.00% |
| 25 | PRINCIPAL FINANCIAL GROUP INC | 136K | $5.2M | +16.4% | 0.705% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in KOP — a direct measure of their conviction.
Filings activity in KOP during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 201 | +4.1% | 80.82% | +22.59 pp | $675M | +39% |
| Q4 2025 | 193 | 1.0% | 58.23% | +1.04 pp | $486M | +1.8% |
| Q3 2025 | 195 | 1.0% | 57.19% | 9.35 pp | $477M | 14% |
| Q2 2025 | 197 | +6.5% | 66.54% | +7.10 pp | $556M | +12% |
| Q1 2025 | 185 | 2.6% | 59.44% | 9.55 pp | $496M | 14% |
| Q4 2024 | 190 | +1.1% | 68.99% | 7.40 pp | $576M | 9.7% |
| Q3 2024 | 188 | +2.7% | 76.39% | 0.84 pp | $638M | 1.1% |
| Q2 2024 | 183 | — | 77.23% | — | $645M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying KOP stock.
Based on Q1 2026 13F filings, institutional ownership of Koppers Holdings Inc. stands at 80.8%, held across 201 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of KOP, with approximately 3,045,112 shares worth $0.12B as of Q1 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of KOP, including TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for KOP is 61 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
33 institutions opened new positions in KOP during Q1 2026, while 25 fully exited. 141 added to existing positions and 25 trimmed.
KOP institutional ownership rose by 22.59 percentage points quarter-over-quarter, with a net change of +8 holders.
The top 10 institutions account for 60.2% of all reported 13F value in KOP, and the top 25 account for 81.1%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Koppers Holdings Inc. (KOP) Institutional Ownership