Who Owns NPK INTERNATIONAL INC (NR)? -- Institutional Holders (2026-03-31)

271 institutions reported holding $1.10B of NPK INTERNATIONAL INC (NR) in SEC 13F filings for 2026-03-31. Largest institutional holders: BlackRock, Inc. ($104.4M), AMERIPRISE FINANCIAL INC ($81.5M), DIMENSIONAL FUND ADVISORS LP ($57.7M), VANGUARD CAPITAL MANAGEMENT LLC ($49.6M), AMERICAN CENTURY COMPANIES INC ($44.1M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1BlackRock, Inc.$104.4M7.2MAdded
2AMERIPRISE FINANCIAL INC$81.5M5.6MAdded
3DIMENSIONAL FUND ADVISORS LP$57.7M4.0MTrimmed
4VANGUARD CAPITAL MANAGEMENT LLC$49.6M3.4MNew
5AMERICAN CENTURY COMPANIES INC$44.1M3.0MTrimmed
6WASATCH ADVISORS LP$42.0M2.9MAdded
7GEODE CAPITAL MANAGEMENT, LLC$32.5M2.2MAdded
8ROYCE & ASSOCIATES LP$30.0M2.1MTrimmed
9STATE STREET CORP$28.3M2.0MTrimmed
10MORGAN STANLEY$26.4M1.8MAdded
11PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.$26.4M1.8MTrimmed
12Russell Investments Group, Ltd.$25.0M1.7MTrimmed
13PRUDENTIAL FINANCIAL INC$24.4M1.7MTrimmed
14Thrivent Financial for Lutherans$24.1M1.7MAdded
15ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$22.3M1.5MAdded
16LOOMIS SAYLES & CO L P$17.1M1.2MTrimmed
17Allianz Asset Management GmbH$16.8M1.2MAdded
18Qube Research & Technologies Ltd$16.5M1.1MAdded
19Electron Capital Partners, LLC$15.9M1.1MNew
20CHARLES SCHWAB INVESTMENT MANAGEMENT INC$15.9M1.1MTrimmed
21Nuveen, LLC$15.5M1.1MTrimmed
22TWO SIGMA INVESTMENTS, LP$15.4M1.1MAdded
23GOLDMAN SACHS GROUP INC$14.7M1.0MAdded
24NORTHERN TRUST CORP$14.0M968,501Added
25VANGUARD PORTFOLIO MANAGEMENT LLC$12.5M861,467New

Source: SEC Form 13F filings · as of 2026-03-31