NPK International Inc.
NPKI- Exchange
- NYSE
- Industry
- Services-Miscellaneous Equipment Rental & Leasing
- SEC CIK
- 0000071829
In the last 90 days, NPK International Inc. insiders filed 0 open-market purchases and 3 sales; 256 institutions reported holding it in 13F filings for Q2 2026, worth $1.24B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in NPK International Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 246
- +10 vs. Q4 2025
- Shares held
- 76.0M
- +5.69M (+8.1%) vs. Q4 2025
- Total value
- $1.10B
- +$262.3M (+31.3%) vs. Q4 2025
- New holders
- 38
- 87 more added
- Sold out
- 28
- 92 more reduced
5 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting NPKI on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 256 | $1.24B |
| Q1 2026 | 246 | $1.10B |
| Q4 2025 | 241 | $896.1M |
| Q3 2025 | 208 | $836.9M |
| Q2 2025 | 189 | $645.1M |
| Q1 2025 | 175 | $439.7M |
| Q4 2024 | 177 | $598.5M |
| Q3 2024 | 189 | $511.3M |
| Q2 2024 | 197 | $597.1M |
| Q1 2024 | 187 | $491.3M |
| Q4 2023 | 180 | $457.5M |
| Q3 2023 | 151 | $443.4M |
| Q2 2023 | 127 | $304.4M |
| Q1 2023 | 119 | $220.2M |
| Q4 2022 | 119 | $248.8M |
| Q3 2022 | 115 | $163.3M |
| Q2 2022 | 120 | $205.1M |
| Q1 2022 | 128 | $244.2M |
| Q4 2021 | 113 | $186.7M |
| Q3 2021 | 110 | $212.0M |
| Q2 2021 | 124 | $229.6M |
| Q1 2021 | 114 | $205.6M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding NPK International Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Marathon Capital Management | 346,110 | $5.02M | 1.13% | −11,280−3.2% | Reduced |
| Calamos Advisors LLC | 353,627 | $5.12M | 0.02% | −3,976−1.1% | Reduced |
| Renaissance Technologies LLC | 362,167 | $5.25M | 0.01% | −157,141−30.3% | Reduced |
| Algert Global LLC | 370,908 | $5.37M | 0.08% | −414,972−52.8% | Reduced |
| Paragon Associates & Paragon Associates II Joint Venture | 375,000 | $5.43M | 7.38% | −25,000−6.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 381,438 | $5.53M | 0.02% | −95,880−20.1% | Reduced |
| Granahan Investment Management Inc | 401,658 | $5.82M | 0.28% | −178,789−30.8% | Reduced |
| Asset Management One Co.,Ltd. | 505,520 | $7.32M | 0.02% | +505,520 | New |
| Oberweis Asset Management Inc | 518,150 | $7.51M | 0.22% | +9,400+1.8% | Added |
| Uniplan Investment Counsel, Inc. | 527,684 | $7.65M | 0.79% | −33,425−6.0% | Reduced |
| Vanguard Fiduciary Trust Co | 536,003 | $7.77M | 0.00% | +536,003 | New |
| Rice Hall James & Associates, LLC | 545,077 | $7.90M | 0.44% | −4,644−0.8% | Reduced |
| First Sabrepoint Capital Management LP | 550,000 | $7.97M | 3.26% | −100,000−15.4% | Reduced |
| ArrowMark Colorado Holdings LLC | 566,395 | $8.21M | 0.22% | −411,568−42.1% | Reduced |
| Silvercrest Asset Management Group LLC | 605,269 | $8.77M | 0.06% | −66,771−9.9% | Reduced |
| Cannell Capital LLC | 654,689 | $9.49M | 6.16% | −286,067−30.4% | Reduced |
| Panagora Asset Management Inc | 677,552 | $9.82M | 0.04% | +8,249+1.2% | Added |
| Ancora Advisors, LLC | 727,350 | $10.5M | 0.22% | −231,210−24.1% | Reduced |
| Axiom Investors LLC | 737,325 | $10.7M | 0.12% | +737,325 | New |
| Tieton Capital Management, LLC | 835,920 | $12.1M | 4.06% | +35,358+4.4% | Added |
| SEI Investments Co | 837,157 | $12.1M | 0.01% | +459,328+121.6% | Added |
| Vanguard Portfolio Management LLC | 861,467 | $12.5M | 0.00% | +861,467 | New |
| Northern Trust Corp | 968,501 | $14.0M | 0.00% | +24,755+2.6% | Added |
| Goldman Sachs Group Inc | 1,011,689 | $14.7M | 0.00% | +308,695+43.9% | Added |
| Two Sigma Investments, LP | 1,060,904 | $15.4M | 0.01% | +555,746+110.0% | Added |
| Nuveen, LLC | 1,073,065 | $15.5M | 0.00% | −44,992−4.0% | Reduced |
| Charles Schwab Investment Management Inc | 1,095,601 | $15.9M | 0.00% | −68,174−5.9% | Reduced |
| Electron Capital Partners, LLC | 1,099,943 | $15.9M | 0.75% | +1,099,943 | New |
| Qube Research & Technologies Ltd | 1,140,585 | $16.5M | 0.02% | +369,139+47.9% | Added |
| Allianz Asset Management GmbH | 1,156,530 | $16.8M | 0.02% | +655,230+130.7% | Added |
| Loomis Sayles & Co L P | 1,177,993 | $17.1M | 0.02% | −109,037−8.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 1,539,088 | $22.3M | 0.01% | +486,846+46.3% | Added |
| Thrivent Financial for Lutherans | 1,665,623 | $24.1M | 0.05% | +77,894+4.9% | Added |
| Prudential Financial Inc | 1,686,629 | $24.4M | 0.03% | −232,283−12.1% | Reduced |
| Russell Investments Group, Ltd. | 1,726,243 | $25.0M | 0.03% | −154,684−8.2% | Reduced |
| Punch & Associates Investment Management, Inc. | 1,818,790 | $26.4M | 1.52% | −34,014−1.8% | Reduced |
| Morgan Stanley | 1,823,060 | $26.4M | 0.00% | +129,998+7.7% | Added |
| State Street Corp | 1,955,319 | $28.3M | 0.00% | −21,681−1.1% | Reduced |
| Royce & Associates LP | 2,071,010 | $30.0M | 0.30% | −114,600−5.2% | Reduced |
| Geode Capital Management, LLC | 2,244,164 | $32.5M | 0.00% | +266,409+13.5% | Added |
| Wasatch Advisors Inc | 2,899,021 | $42.0M | 0.28% | +683,116+30.8% | Added |
| American Century Companies Inc | 3,043,763 | $44.1M | 0.02% | −27,877−0.9% | Reduced |
| Vanguard Capital Management LLC | 3,424,942 | $49.6M | 0.00% | +3,424,942 | New |
| Dimensional Fund Advisors LP | 3,983,658 | $57.7M | 0.01% | −482,892−10.8% | Reduced |
| Ameriprise Financial Inc | 5,623,552 | $81.5M | 0.02% | +458,342+8.9% | Added |
| BlackRock, Inc. | 7,202,705 | $104.4M | 0.00% | +283,089+4.1% | Added |
| Pennant Select, LLC | 0 | $0 | 0.00% | −1,014,221−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −347,691−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −224,475−100.0% | Sold out |
| G2 Investment Partners Management LLC | 0 | $0 | 0.00% | −210,823−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −175,974−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −109,824−100.0% | Sold out |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −83,245−100.0% | Sold out |
| Northeast Financial Group, Inc. | 0 | $0 | 0.00% | −65,902−100.0% | Sold out |
| Jackson Creek Investment Advisors LLC | 0 | $0 | 0.00% | −35,141−100.0% | Sold out |
| CoreCommodity Management, LLC | 0 | $0 | 0.00% | −26,414−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −24,852−100.0% | Sold out |
| PharVision Advisers, LLC | 0 | $0 | 0.00% | −23,980−100.0% | Sold out |
| Counterpoint Mutual Funds LLC | 0 | $0 | 0.00% | −19,965−100.0% | Sold out |
| Kathmere Capital Management, LLC | 0 | $0 | 0.00% | −19,203−100.0% | Sold out |
| Bailard, Inc. | 0 | $0 | 0.00% | −18,444−100.0% | Sold out |
| Aristides Capital LLC | 0 | $0 | 0.00% | −15,754−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −15,035−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −13,570−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | −12,274−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −11,015−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −10,642−100.0% | Sold out |
| 49 Wealth Management, LLC | 0 | $0 | 0.00% | −10,069−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −3,350−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −2,579−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −506−100.0% | Sold out |
| Cygnus Capital Advisors, LLC | 0 | $0 | 0.00% | −393−100.0% | Sold out |
| Plante Moran Financial Advisors, LLC | 0 | $0 | 0.00% | −320−100.0% | Sold out |
| Optima Capital LLC | 0 | $0 | 0.00% | −229−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Perritt Capital Management Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| GPS Wealth Strategies Group, LLC | – | – | – | – | Not filed |