Who owns Koppers Holdings (KOP)
Which tracked institutional funds hold KOP, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See KOP company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
58 tracked funds added or opened KOP while 25 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
KOP’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in KOP divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 196 tracked filers holding KOP, 98 increased or opened the position and 100 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in KOP between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 2
- AdvisorShares Investments LLC$566K
- Gotham Asset Management, LLC$517K
Full exits 14
- LSV ASSET MANAGEMENT$36M
- CSM Advisors, LLC$8M
- LORD, ABBETT & CO. LLC$3M
- HRT FINANCIAL LP$3M
- MILLENNIUM MANAGEMENT LLC$2M
- Waterfront Wealth Inc.$2M
Largest adds
- Simcoe Capital Management, LLC$27M
- BlackRock, Inc.$19M
- AMERICAN CENTURY COMPANIES INC$17M
- DIMENSIONAL FUND ADVISORS LP$9M
- Invesco Ltd.$8M
- STATE STREET CORP$7M
Largest trims
- TWO SIGMA INVESTMENTS, LP$4M
- JANE STREET GROUP, LLC$3M
- Russell Investments Group, Ltd.$1M
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$1M
- SEI INVESTMENTS CO$1M
- Engineers Gate Manager LP$951K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 3,047,603 | $137M | 17.2% | 2026-Q2 |
| Simcoe Capital Management, LLC added | 1,416,160 | $64M | 8.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,237,249 | $56M | 7.0% | 2026-Q2 |
| PZENA INVESTMENT MANAGEMENT LLC trimmed | 1,061,285 | $48M | 6.0% | 2026-Q2 |
| FULLER & THALER ASSET MANAGEMENT, INC. trimmed | 943,279 | $42M | 5.3% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 848,068 | $38M | 4.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 812,629 | $36M | 4.6% | 2026-Q2 |
| STATE STREET CORP added | 804,553 | $36M | 4.5% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 539,047 | $24M | 3.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 483,417 | $22M | 2.7% | 2026-Q2 |
| Quaker Capital Investments, LLC trimmed | 408,555 | $18M | 2.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 384,122 | $17M | 2.2% | 2026-Q2 |
| Invesco Ltd. added | 332,605 | $15M | 1.9% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 285,656 | $13M | 1.6% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 266,052 | $12M | 1.5% | 2026-Q2 |
| NORTHERN TRUST CORP added | 253,481 | $11M | 1.4% | 2026-Q2 |
| MORGAN STANLEY added | 242,924 | $11M | 1.4% | 2026-Q2 |
| Dana Investment Advisors, Inc. trimmed | 231,399 | $10M | 1.3% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 222,570 | $10M | 1.3% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 189,200 | $8M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 158,809 | $7M | 0.9% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 153,740 | $7M | 0.9% | 2026-Q2 |
| HUNTINGTON NATIONAL BANK trimmed | 146,587 | $7M | 0.8% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 136,719 | $6M | 0.8% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 130,584 | $6M | 0.7% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 129,720 | $6M | 0.7% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 125,938 | $6M | 0.7% | 2026-Q2 |
| SEIZERT CAPITAL PARTNERS, LLC added | 122,722 | $6M | 0.7% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 122,354 | $6M | 0.7% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 117,916 | $5M | 0.7% | 2026-Q2 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC trimmed | 105,366 | $5M | 0.6% | 2026-Q2 |
| Empowered Funds, LLC added | 102,787 | $5M | 0.6% | 2026-Q2 |
| DENALI ADVISORS LLC added | 96,092 | $4M | 0.5% | 2026-Q2 |
| Santori & Peters, Inc. added | 83,834 | $4M | 0.5% | 2026-Q2 |
| KESTREL INVESTMENT MANAGEMENT CORP | 83,450 | $4M | 0.5% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 78,205 | $4M | 0.4% | 2026-Q2 |
| JB CAPITAL PARTNERS LP | 78,101 | $4M | 0.4% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 70,243 | $3M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 66,064 | $3M | 0.4% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 65,533 | $3M | 0.4% | 2026-Q2 |
| FEDERATED HERMES, INC. trimmed | 62,781 | $3M | 0.4% | 2026-Q2 |
| IRONWOOD INVESTMENT MANAGEMENT LLC trimmed | 58,116 | $3M | 0.3% | 2026-Q2 |
| Villanova Investment Management Co LLC | 55,835 | $3M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 54,010 | $2M | 0.3% | 2026-Q2 |
| Nuveen, LLC trimmed | 51,023 | $2M | 0.3% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 50,668 | $2M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 49,724 | $2M | 0.3% | 2026-Q2 |
| XTX Topco Ltd added | 46,434 | $2M | 0.3% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 46,300 | $2M | 0.3% | 2026-Q2 |
| CITIGROUP INC trimmed | 46,174 | $2M | 0.3% | 2026-Q2 |
| Pacific Ridge Capital Partners, LLC trimmed | 42,995 | $2M | 0.2% | 2026-Q2 |
| Creative Planning added | 40,210 | $2M | 0.2% | 2026-Q2 |
| Legal & General Group Plc trimmed | 39,723 | $2M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 36,900 | $2M | 0.2% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 35,000 | $2M | 0.2% | 2026-Q2 |
| UBS Group AG added | 33,822 | $2M | 0.2% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 33,818 | $2M | 0.2% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 33,491 | $2M | 0.2% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 33,224 | $1M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND added | 31,270 | $1M | 0.2% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC added | 30,885 | $1M | 0.2% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 30,600 | $1M | 0.2% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 29,340 | $1M | 0.2% | 2026-Q2 |
| GAMCO INVESTORS, INC. ET AL | 28,814 | $1M | 0.2% | 2026-Q2 |
| GLOBEFLEX CAPITAL L P | 27,190 | $1M | 0.2% | 2026-Q2 |
| Quantinno Capital Management LP added | 24,637 | $1M | 0.1% | 2026-Q2 |
| HANCOCK WHITNEY CORP added | 24,418 | $1M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 23,933 | $926K | 0.1% | 2026-Q2 |
| Campbell & CO Investment Adviser LLC added | 23,222 | $1M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 23,048 | $1M | 0.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 21,593 | $970K | 0.1% | 2026-Q2 |
| INTECH INVESTMENT MANAGEMENT LLC added | 20,779 | $933K | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 20,462 | $919K | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 19,975 | $897K | 0.1% | 2026-Q2 |
| Horizon Investments, LLC added | 19,250 | $864K | 0.1% | 2026-Q2 |
| KLP KAPITALFORVALTNING AS | 18,400 | $826K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 17,582 | $789K | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 17,375 | $780K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 15,564 | $699K | 0.1% | 2026-Q2 |
| Vident Advisory, LLC | 15,460 | $694K | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP trimmed | 15,189 | $682K | 0.1% | 2026-Q2 |
| Marble Wealth, LLC | 15,085 | $677K | 0.1% | 2026-Q2 |
| Allspring Global Investments Holdings, LLC added | 14,138 | $635K | 0.1% | 2026-Q2 |
| Kennondale Capital Management LLC | 13,578 | $610K | 0.1% | 2026-Q2 |
| Pathstone Holdings, LLC trimmed | 13,236 | $594K | 0.1% | 2026-Q2 |
| State of Tennessee, Department of Treasury trimmed | 12,682 | $569K | 0.1% | 2026-Q2 |
| AdvisorShares Investments LLC new | 12,600 | $566K | 0.1% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 12,593 | $565K | 0.1% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC added | 12,486 | $561K | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 12,008 | $539K | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 11,940 | $536K | 0.1% | 2026-Q2 |
| Gotham Asset Management, LLC new | 11,522 | $517K | 0.1% | 2026-Q2 |
| Squarepoint Ops LLC added | 11,304 | $508K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC | 11,217 | $504K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 11,095 | $504K | 0.1% | 2026-Q2 |
| Bristlecone Value Partners, LLC | 10,650 | $478K | 0.1% | 2026-Q2 |
| Illinois Municipal Retirement Fund added | 10,263 | $461K | 0.1% | 2026-Q2 |
| Mariner, LLC trimmed | 10,033 | $451K | 0.1% | 2026-Q2 |
| VIRGINIA RETIREMENT SYSTEMS ET Al new | 9,900 | $445K | 0.1% | 2026-Q2 |
| EP Wealth Advisors, LLC trimmed | 9,810 | $440K | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.