NPKI
NPK International Inc. · Basic Materials · Construction Materials
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 1 | 0 | 44.30K | $51,327 | n/a | n/a |
| Q2 2026 | 93 | -1 | 50.52M | $802.92M | +7 | −8 |
| Q1 2026 | 97 | +6 | 50.65M | $733.19M | +8 | −2 |
| Q4 2025 | 91 | 0 | 49.35M | $588.29M | n/a | n/a |
| Q3 2025 | 19 | +1 | 22.13M | $250.25M | +1 | n/a |
| Q2 2025 | 15 | +1 | 18.80M | $160.00M | +1 | n/a |
| Q1 2025 | 11 | -1 | 7.32M | $42.53M | n/a | −1 |
| Q4 2024 | 12 | -3 | 6.57M | $50.39M | n/a | −3 |
| Q3 2024 | 14 | +1 | 5.44M | $37.72M | +1 | n/a |
| Q2 2024 | 13 | n/a | 6.23M | $51.78M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 1.79M | n/a | $14.85M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 2 | Wellington Management ✦ | 1.05M | n/a | $8.73M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Arrowstreet Capital ✦ | 1.03M | n/a | $8.55M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Renaissance Technologies ✦ | 653.00K | n/a | $5.43M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | AQR Capital Management ✦ | 649.97K | n/a | $5.40M | 0.0% | n/c | 1 | SEC ↗ ×3 |
| 6 | Two Sigma Investments ✦ | 471.89K | n/a | $3.92M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Fisher Asset Management ✦ | 224.48K | n/a | $1.87M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 160.74K | n/a | $1.34M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 74.76K | n/a | $621,264 | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 44.73K | n/a | $371,731 | 0.0% | n/c | 1 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 38.97K | n/a | $324,000 | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Adage Capital Partners ✦ | 25.00K | n/a | $207,750 | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Millennium Management ✦ | 20.89K | n/a | $173,637 | 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.
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)
Officer · 2.99K sh · $40,113
Director · 10.00K sh · $134,917
Director · 2.01K sh · $28,705
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology