NPKI
NPK International Inc. · Basic Materials · Construction Materials
Momentum inputs (comparable managers):
holder breadth +7.1% ·
share flow +0.8% ·
net new positions +6.7%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| 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 | BlackRock ✦ (passive) | 6.60M | n/a | $56.14M | 0.0% | n/c | 1 | SEC ↗ ×12 |
| 2 | The Vanguard Group ✦ (passive) | 4.73M | n/a | $40.26M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | Geode Capital Management ✦ (passive) | 2.34M | -2.4% | $19.87M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 4 | State Street Global Advisors ✦ (passive) | 2.06M | -7.7% | $17.54M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | Renaissance Technologies ✦ | 713.24K | -11.8% | $6.07M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 691.85K | +47.6% | $5.89M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 7 | Wellington Management ✦ | 661.70K | +11.5% | $5.63M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | Arrowstreet Capital ✦ | 322.74K | New | $2.75M | 0.0% | New | 1 | SEC ↗ |
| 9 | Fisher Asset Management ✦ | 239.29K | 0.0% | $2.04M | 0.0% | Held | 5 | SEC ↗ |
| 10 | Two Sigma Investments ✦ | 110.15K | +14.9% | $937,385 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | D. E. Shaw & Co. ✦ | 93.22K | +12.6% | $793,303 | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 12 | Millennium Management ✦ | 91.40K | -47.6% | $777,780 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 86.40K | -52.3% | $735,298 | 0.0% | ▼ Trim | 5 | SEC ↗ ×5 |
| 14 | T. Rowe Price ✦ | 53.03K | +10.0% | $452,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | Fidelity (FMR) ✦ | 13.77K | n/a | $117,142 | 0.0% | n/c | 1 | SEC ↗ ×3 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $2.75M | 0.0% |
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