Ranked by reported Q1 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. | 7.2M | $104.4M | +4.1% | 8.521% | 0.00% |
| 2 | AMERIPRISE FINANCIAL INC | 5.6M | $81.5M | +8.9% | 6.653% | 0.02% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 4.0M | $57.7M | -10.8% | 4.713% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 3.4M | $49.6M | β | 4.052% | 0.00% |
| 5 | AMERICAN CENTURY COMPANIES INC | 3.0M | $44.1M | -0.9% | 3.601% | 0.02% |
| 6 | WASATCH ADVISORS INC | 2.9M | $42.0M | +30.8% | 3.430% | 0.28% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 2.2M | $32.5M | +13.5% | 2.655% | 0.00% |
| 8 | ROYCE & ASSOCIATES LP | 2.1M | $30.0M | -5.2% | 2.450% | 0.30% |
| 9 | STATE STREET CORP | 2.0M | $28.3M | -1.1% | 2.313% | 0.00% |
| 10 | MORGAN STANLEY | 1.8M | $26.4M | +7.7% | 2.157% | 0.00% |
| 11 | PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 1.8M | $26.4M | -1.8% | 2.152% | 1.52% |
| 12 | Russell Investments Group, Ltd. | 1.7M | $25.0M | -8.2% | 2.042% | 0.03% |
| 13 | PRUDENTIAL FINANCIAL INC | 1.7M | $24.4M | -12.1% | 1.995% | 0.03% |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.5M | $22.3M | +46.3% | 1.821% | 0.01% |
| 15 | LOOMIS SAYLES & CO L P | 1.2M | $17.1M | -8.5% | 1.394% | 0.02% |
| 16 | Allianz Asset Management GmbH | 1.2M | $16.8M | +130.7% | 1.368% | 0.02% |
| 17 | Qube Research & Technologies Ltd | 1.1M | $16.5M | +47.9% | 1.349% | 0.02% |
| 18 | Electron Capital Partners, LLC | 1.1M | $15.9M | β | 1.301% | 0.72% |
| 19 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | $15.9M | -5.9% | 1.296% | 0.00% |
| 20 | Nuveen, LLC | 1.1M | $15.5M | -4.0% | 1.270% | 0.00% |
| 21 | TWO SIGMA INVESTMENTS, LP | 1.1M | $15.4M | +110.0% | 1.255% | 0.01% |
| 22 | GOLDMAN SACHS GROUP INC | 1.0M | $14.7M | +43.9% | 1.197% | 0.00% |
| 23 | NORTHERN TRUST CORP | 969K | $14.0M | +2.6% | 1.146% | 0.00% |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | 861K | $12.5M | β | 1.019% | 0.00% |
| 25 | SEI INVESTMENTS CO | 837K | $12.1M | +121.6% | 0.990% | 0.01% |
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 Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new NPKI position in Q1 2026
Institutions that fully closed their NPKI position in Q1 2026
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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 244 | +3.4% | 82.39% | +14.80 pp | $1.04B | +22% |
| Q4 2025 | 236 | +15% | 67.59% | +2.95 pp | $856M | +4.6% |
| Q3 2025 | 205 | +9.6% | 64.64% | +15.42 pp | $818M | +31% |
| Q2 2025 | 187 | +7.5% | 49.22% | +16.26 pp | $623M | +49% |
| Q1 2025 | 174 | 1.1% | 32.96% | 12.14 pp | $417M | 27% |
| Q4 2024 | 176 | 6.9% | 45.10% | +6.40 pp | $571M | +17% |
| Q3 2024 | 189 | 4.1% | 38.70% | 6.03 pp | $490M | 13% |
| Q2 2024 | 197 | β | 44.73% | β | $566M | 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 Q1 2026 13F filings, institutional ownership of NPK International Inc. stands at 82.4%, held across 244 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of NPKI, with approximately 7,202,705 shares worth $0.10B as of Q1 2026.
Yes β 1 widely-followed marquee investor appear among the top 25 institutional holders of NPKI, including TWO SIGMA INVESTMENTS, LP.
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.
42 institutions opened new positions in NPKI during Q1 2026, while 34 fully exited. 159 added to existing positions and 42 trimmed.
NPKI institutional ownership rose by 14.80 percentage points quarter-over-quarter, with a net change of +8 holders.
The top 10 institutions account for 47.6% of all reported 13F value in NPKI, and the top 25 account for 73.0%.
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