Security record · archived quarter
NPKI
NPK International Inc. · Basic Materials · Construction Materials
91Tracked holders
0Δ holders
49.35MShares held
$588.29MReported value
+0New positions
−0Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +0.5% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 93 | -1 | 51.06M | $809.91M | +7 | −8 |
| Q1 2026 | 97 | +6 | 50.65M | $733.19M | +8 | −2 |
| Q4 2025 | 91 | 0 | 49.35M | $588.29M | — | — |
| Q3 2025 | 19 | +1 | 22.13M | $250.25M | +1 | — |
| Q2 2025 | 15 | +1 | 18.80M | $160.00M | +1 | — |
| Q1 2025 | 11 | -1 | 7.32M | $42.53M | — | −1 |
| Q4 2024 | 12 | -3 | 6.57M | $50.39M | — | −3 |
| Q3 2024 | 14 | +1 | 5.44M | $37.72M | +1 | — |
| Q2 2024 | 13 | — | 6.23M | $51.78M | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 6.92M | +7.0% | $82.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | Ameriprise Financial Inc | 5.17M | — | $61.57M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Ameriprise Financial Inc | 5.17M | — | $61.57M | 0.0% | n/c | 1 | SEC ↗ |
| 17 | Ameriprise Financial Inc | 5.17M | — | $61.57M | 0.0% | n/c | 1 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 4.71M | -0.9% | $56.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 4.71M | -0.9% | $56.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 4.71M | -0.9% | $56.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 21 | The Vanguard Group ✦ (passive) | 4.71M | -0.9% | $56.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 22 | The Vanguard Group ✦ (passive) | 4.71M | -0.9% | $56.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 23 | Dimensional Fund Advisors Lp | 4.47M | — | $53.24M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Dimensional Fund Advisors Lp | 4.47M | — | $53.24M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Dimensional Fund Advisors Lp | 4.47M | — | $53.24M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Dimensional Fund Advisors Lp | 4.47M | — | $53.24M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Dimensional Fund Advisors Lp | 4.47M | — | $53.24M | 0.0% | n/c | 1 | SEC ↗ |
| 28 | American Century Companies Inc | 3.07M | — | $36.61M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Geode Capital Management ✦ (passive) | 1.98M | -14.8% | $23.58M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 30 | Geode Capital Management ✦ (passive) | 1.98M | -14.8% | $23.58M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 31 | State Street Global Advisors ✦ (passive) | 1.98M | -2.7% | $23.57M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 32 | Prudential Financial Inc | 1.92M | — | $22.87M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Prudential Financial Inc | 1.92M | — | $22.87M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Russell Investments Group, Ltd. | 1.88M | — | $22.42M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 1.69M | +3.0% | $20.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Loomis Sayles & Co L P | 1.29M | — | $15.34M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Loomis Sayles & Co L P | 1.29M | — | $15.34M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Charles Schwab Investment… | 1.16M | — | $13.87M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Nuveen, LLC | 1.12M | — | $13.33M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Nuveen, LLC | 1.12M | — | $13.33M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Nuveen, LLC | 1.12M | — | $13.33M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Arrowstreet Capital ✦ | 1.05M | +19.1% | $12.54M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 59 | Northern Trust Corp | 943.75K | — | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Northern Trust Corp | 943.75K | — | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Northern Trust Corp | 943.75K | — | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Northern Trust Corp | 943.75K | — | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Northern Trust Corp | 943.75K | — | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Northern Trust Corp | 943.75K | — | $11.25M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Qube Research & Technologies Ltd | 771.45K | — | $9.20M | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Goldman Sachs Group ✦ | 702.99K | +41.0% | $8.38M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Goldman Sachs Group ✦ | 702.99K | +41.0% | $8.38M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Point72 Asset Management ✦ | 537.03K | +3792.7% | $6.40M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Renaissance Technologies ✦ | 519.31K | -8.6% | $6.19M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 70 | Wellington Management ✦ | 506.60K | -23.4% | $6.04M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 71 | Two Sigma Investments ✦ | 505.16K | +16.5% | $6.02M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 72 | Allianz Asset Management GmbH | 501.30K | — | $5.98M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Sei Investments Co | 377.83K | — | $4.50M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Sei Investments Co | 377.83K | — | $4.50M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Jane Street Group, Llc | 324.12K | — | $3.86M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Jane Street Group, Llc | 324.12K | — | $3.86M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Jane Street Group, Llc | 324.12K | — | $3.86M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | UBS Group AG | 288.38K | — | $3.44M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | UBS Group AG | 288.38K | — | $3.44M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | UBS Group AG | 288.38K | — | $3.44M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Bank of New York Mellon Corp | 268.39K | — | $3.20M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Bank of New York Mellon Corp | 268.39K | — | $3.20M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Bank of New York Mellon Corp | 268.39K | — | $3.20M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | First Eagle Investment Management… | 265.32K | — | $3.16M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Citadel Advisors ✦ | 241.64K | -53.9% | $2.88M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 86 | Citadel Advisors ✦ | 241.64K | -53.9% | $2.88M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 87 | Lazard Asset Management Llc | 237.22K | — | $2.83M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Fisher Asset Management ✦ | 231.97K | -3.1% | $2.77M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 89 | JPMorgan Chase ✦ | 230.88K | -48.3% | $2.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | JPMorgan Chase ✦ | 230.88K | -48.3% | $2.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | JPMorgan Chase ✦ | 230.88K | -48.3% | $2.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | Tudor Investment Corp Et Al | 224.47K | — | $2.68M | 0.0% | n/c | 1 | SEC ↗ |
| 93 | D. E. Shaw & Co. ✦ | 202.13K | -27.3% | $2.41M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 94 | D. E. Shaw & Co. ✦ | 202.13K | -27.3% | $2.41M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 95 | Bank Of America Corp /De/ | 197.71K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Bank Of America Corp /De/ | 197.71K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 97 | Bank Of America Corp /De/ | 197.71K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 98 | Bank Of America Corp /De/ | 197.71K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 99 | Bank Of America Corp /De/ | 197.71K | — | $2.36M | 0.0% | n/c | 1 | SEC ↗ |
| 100 | Raymond James Financial Inc | 183.55K | — | $2.19M | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 245 holders, 75.81M shares, $1.05B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 17
Lewis Michael A
Director · 2.01K sh · $28,705
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 31
SC 13G — VANGUARD CAPITAL MANAGEMENT LLC
Jul 29
SC 13G/A — BlackRock, Inc.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q4 2025 ·
Methodology ·
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