Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in NPKI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 7.9M | $126.3M | +10.2% | 9.403% | 0.00% |
| 2 | AMERIPRISE FINANCIAL INC | 4.5M | $71.4M | -20.2% | 5.313% | 0.01% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 3.6M | $57.9M | -8.6% | 4.312% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 3.6M | $57.4M | +5.3% | 4.269% | 0.00% |
| 5 | AMERICAN CENTURY COMPANIES INC | 3.1M | $49.8M | +2.8% | 3.705% | 0.02% |
| 6 | WASATCH ADVISORS LP | 2.8M | $44.7M | -3.0% | 3.329% | 0.29% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 2.4M | $37.7M | +5.6% | 2.806% | 0.00% |
| 8 | ROYCE & ASSOCIATES LP | 2.1M | $34.2M | +3.8% | 2.545% | 0.28% |
| 9 | STATE STREET CORP | 2.0M | $32.1M | +3.0% | 2.386% | 0.00% |
| 10 | PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 1.7M | $27.7M | -4.4% | 2.059% | 1.37% |
| 11 | EMERALD ADVISERS, LLC | 1.6M | $25.0M | β | 1.863% | 0.59% |
| 12 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.5M | $23.1M | β | 1.721% | 0.01% |
| 13 | Russell Investments Group, Ltd. | 1.4M | $22.2M | -19.1% | 1.653% | 0.02% |
| 14 | MORGAN STANLEY | 1.3M | $20.0M | -30.9% | 1.491% | 0.00% |
| 15 | Electron Capital Partners, LLC | 1.2M | $18.6M | +6.3% | 1.385% | 0.74% |
| 16 | LOOMIS SAYLES & CO L P | 1.2M | $18.3M | -2.3% | 1.363% | 0.02% |
| 17 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.1M | $18.1M | -26.3% | 1.344% | 0.01% |
| 18 | PRUDENTIAL FINANCIAL INC | 1.1M | $17.8M | -33.8% | 1.322% | 0.02% |
| 19 | Qube Research & Technologies Ltd | 1.1M | $17.5M | -3.7% | 1.300% | 0.02% |
| 20 | EMERALD MUTUAL FUND ADVISERS TRUST | 1.1M | $17.1M | β | 1.272% | 0.60% |
| 21 | MILLENNIUM MANAGEMENT LLC | 1.0M | $16.7M | +560.8% | 1.243% | 0.01% |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.0M | $16.4M | -6.2% | 1.218% | 0.00% |
| 23 | Invesco Ltd. | 1.0M | $15.9M | +272.7% | 1.185% | 0.00% |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | 979K | $15.6M | +13.6% | 1.159% | 0.00% |
| 25 | Nuveen, LLC | 919K | $14.6M | -14.3% | 1.088% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in NPKI β a direct measure of their conviction.
Filings activity in NPKI during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 254 | +2.8% | 92.32% | +2.28 pp | $1.20B | +13% |
| Q1 2026 | 247 | +4.7% | 90.04% | +0.90 pp | $1.06B | +23% |
| Q4 2025 | 236 | +15% | 89.14% | +1.52 pp | $856M | +4.6% |
| Q3 2025 | 205 | +9.6% | 87.62% | 3.38 pp | $818M | +31% |
| Q2 2025 | 187 | +7.5% | 91.00% | +1.97 pp | $623M | +49% |
| Q1 2025 | 174 | 1.1% | 89.03% | 2.89 pp | $417M | 27% |
| Q4 2024 | 176 | 6.9% | 91.92% | +4.81 pp | $571M | +17% |
| Q3 2024 | 189 | β | 87.11% | β | $490M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying NPKI stock.
Based on Q2 2026 13F filings, institutional ownership of NPK International Inc. stands at 92.3%, held across 254 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of NPKI, with approximately 7,940,503 shares worth $0.13B as of Q2 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of NPKI, including MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for NPKI is 61 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
34 institutions opened new positions in NPKI during Q2 2026, while 26 fully exited. 161 added to existing positions and 52 trimmed.
NPKI institutional ownership rose by 2.28 percentage points quarter-over-quarter, with a net change of +7 holders.
The top 10 institutions account for 45.1% of all reported 13F value in NPKI, and the top 25 account for 68.2%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
NPK International Inc. (NPKI) Institutional Ownership