Who owns NPK International (NPKI)
Which tracked institutional funds hold NPKI, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NPKI 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
74 tracked funds added or opened NPKI while 44 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
NPKI’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 gap the other way — the median holder sizes NPKI more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in NPKI 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 245 tracked filers holding NPKI, 134 increased or opened the position and 119 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 NPKI 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 18
- EMERALD ADVISERS, LLC$25M
- MASSACHUSETTS FINANCIAL SERVICES CO /MA/$23M
- EMERALD MUTUAL FUND ADVISERS TRUST$17M
- FIRST TRUST ADVISORS LP$9M
- NORGES BANK$5M
- Edgestream Partners, L.P.$4M
Full exits 15
- Thrivent Financial for Lutherans$24M
- Tieton Capital Management, LLC$12M
- PARAGON ASSOCIATES & PARAGON ASSOCIATES II JOINT VENTURE$5M
- JANE STREET GROUP, LLC$5M
- Roubaix Capital, LLC$4M
- HARBOR CAPITAL ADVISORS, INC.$3M
Largest adds
- BlackRock, Inc.$22M
- MILLENNIUM MANAGEMENT LLC$14M
- Invesco Ltd.$12M
- WELLINGTON MANAGEMENT GROUP LLP$9M
- VANGUARD CAPITAL MANAGEMENT LLC$8M
- First Eagle Investment Management, LLC$8M
Largest trims
- AMERIPRISE FINANCIAL INC$10M
- PRUDENTIAL FINANCIAL INC$7M
- TWO SIGMA INVESTMENTS, LP$6M
- MORGAN STANLEY$6M
- SEI INVESTMENTS CO$5M
- GOLDMAN SACHS GROUP INC$5M
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 | 7,940,503 | $126M | 10.9% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 4,486,433 | $71M | 6.2% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 3,641,547 | $58M | 5.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 3,604,823 | $57M | 4.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 3,128,652 | $50M | 4.3% | 2026-Q2 |
| WASATCH ADVISORS LP trimmed | 2,811,593 | $45M | 3.9% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,369,714 | $38M | 3.3% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 2,149,100 | $34M | 3.0% | 2026-Q2 |
| STATE STREET CORP added | 2,014,703 | $32M | 2.8% | 2026-Q2 |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. trimmed | 1,738,857 | $28M | 2.4% | 2026-Q2 |
| EMERALD ADVISERS, LLC new | 1,573,597 | $25M | 2.2% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ new | 1,452,984 | $23M | 2.0% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 1,395,934 | $22M | 1.9% | 2026-Q2 |
| MORGAN STANLEY trimmed | 1,259,432 | $20M | 1.7% | 2026-Q2 |
| Electron Capital Partners, LLC added | 1,169,304 | $19M | 1.6% | 2026-Q2 |
| Allianz Asset Management GmbH | 1,156,530 | $17M | 1.4% | 2026-Q2 |
| LOOMIS SAYLES & CO L P trimmed | 1,150,634 | $18M | 1.6% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 1,134,552 | $18M | 1.6% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC trimmed | 1,116,379 | $18M | 1.5% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 1,098,020 | $17M | 1.5% | 2026-Q2 |
| EMERALD MUTUAL FUND ADVISERS TRUST new | 1,074,368 | $17M | 1.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 1,049,928 | $17M | 1.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 1,028,113 | $16M | 1.4% | 2026-Q2 |
| Invesco Ltd. added | 1,000,547 | $16M | 1.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 978,659 | $16M | 1.3% | 2026-Q2 |
| Nuveen, LLC trimmed | 919,147 | $15M | 1.3% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 800,956 | $13M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 795,342 | $13M | 1.1% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 790,335 | $13M | 1.1% | 2026-Q2 |
| First Eagle Investment Management, LLC added | 721,002 | $11M | 1.0% | 2026-Q2 |
| AXIOM INVESTORS LLC /DE trimmed | 695,540 | $11M | 1.0% | 2026-Q2 |
| Ancora Advisors LLC trimmed | 678,760 | $11M | 0.9% | 2026-Q2 |
| Asset Management One Co., Ltd. added | 659,414 | $10M | 0.9% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 601,060 | $10M | 0.8% | 2026-Q2 |
| FIRST SABREPOINT CAPITAL MANAGEMENT LP added | 600,000 | $10M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 597,805 | $10M | 0.8% | 2026-Q2 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 587,550 | $9M | 0.8% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 577,718 | $9M | 0.8% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 559,499 | $9M | 0.8% | 2026-Q2 |
| Uniplan Investment Counsel, Inc. added | 544,278 | $9M | 0.7% | 2026-Q2 |
| FIRST TRUST ADVISORS LP new | 538,191 | $9M | 0.7% | 2026-Q2 |
| RICE HALL JAMES & ASSOCIATES, LLC trimmed | 491,243 | $8M | 0.7% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 418,914 | $7M | 0.6% | 2026-Q2 |
| ArrowMark Colorado Holdings LLC trimmed | 400,141 | $6M | 0.5% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 363,503 | $6M | 0.5% | 2026-Q2 |
| CANNELL CAPITAL LLC trimmed | 359,882 | $6M | 0.5% | 2026-Q2 |
| MARATHON CAPITAL MANAGEMENT trimmed | 343,930 | $5M | 0.5% | 2026-Q2 |
| MARSHALL WACE, LLP added | 335,734 | $5M | 0.5% | 2026-Q2 |
| OP Asset Management Ltd | 333,418 | $5M | 0.5% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 327,606 | $5M | 0.4% | 2026-Q2 |
| NORGES BANK new | 323,100 | $5M | 0.4% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 310,239 | $5M | 0.4% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 306,058 | $5M | 0.4% | 2026-Q2 |
| Edgestream Partners, L.P. new | 258,097 | $4M | 0.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 254,698 | $4M | 0.3% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 242,570 | $4M | 0.3% | 2026-Q2 |
| Calamos Advisors LLC trimmed | 230,552 | $4M | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 225,367 | $4M | 0.3% | 2026-Q2 |
| Granahan Investment Management, LLC trimmed | 221,224 | $4M | 0.3% | 2026-Q2 |
| TEACHER RETIREMENT SYSTEM OF TEXAS added | 217,565 | $3M | 0.3% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 213,122 | $3M | 0.3% | 2026-Q2 |
| Riverwater Partners LLC added | 191,096 | $3M | 0.3% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 183,946 | $3M | 0.3% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 178,850 | $3M | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 170,372 | $3M | 0.2% | 2026-Q2 |
| UBS Group AG trimmed | 166,419 | $3M | 0.2% | 2026-Q2 |
| Skylands Capital, LLC | 164,300 | $3M | 0.2% | 2026-Q2 |
| Swiss National Bank trimmed | 161,200 | $3M | 0.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 152,184 | $2M | 0.2% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd added | 149,133 | $2M | 0.2% | 2026-Q2 |
| North Star Investment Management Corp. added | 143,000 | $2M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 142,373 | $2M | 0.2% | 2026-Q2 |
| IRONWOOD INVESTMENT MANAGEMENT LLC trimmed | 140,567 | $2M | 0.2% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 137,907 | $2M | 0.2% | 2026-Q2 |
| GILDER GAGNON HOWE & CO LLC trimmed | 127,388 | $2M | 0.2% | 2026-Q2 |
| Jump Financial, LLC added | 126,920 | $2M | 0.2% | 2026-Q2 |
| DARK FOREST CAPITAL MANAGEMENT LP added | 124,898 | $2M | 0.2% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 122,980 | $2M | 0.2% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 122,167 | $2M | 0.2% | 2026-Q2 |
| CREDIT AGRICOLE S A new | 121,442 | $2M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC added | 115,835 | $2M | 0.2% | 2026-Q2 |
| HSBC HOLDINGS PLC added | 112,498 | $2M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 111,254 | $2M | 0.2% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 110,752 | $2M | 0.2% | 2026-Q2 |
| CROWN ADVISORS MANAGEMENT, INC. | 100,000 | $2M | 0.1% | 2026-Q2 |
| Round Rock Advisors LLC | 92,505 | $1M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 90,542 | $1M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 88,915 | $1M | 0.1% | 2026-Q2 |
| Conestoga Capital Advisors, LLC new | 88,825 | $1M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 87,057 | $1M | 0.1% | 2026-Q2 |
| Trexquant Investment LP trimmed | 86,385 | $1M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 84,147 | $1M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 83,222 | $1M | 0.1% | 2026-Q2 |
| VARCOV Co. new | 80,523 | $1M | 0.1% | 2026-Q2 |
| PINNACLE ASSOCIATES LTD added | 78,133 | $1M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 72,659 | $1M | 0.1% | 2026-Q2 |
| EntryPoint Capital, LLC added | 71,868 | $1M | 0.1% | 2026-Q2 |
| ROTHSCHILD INVESTMENT LLC added | 69,040 | $1M | 0.1% | 2026-Q2 |
| Penbrook Management LLC added | 67,825 | $1M | 0.1% | 2026-Q2 |
| Savant Capital, LLC added | 66,508 | $1M | 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.