NPK International (NPKI) Institutional Ownership $8.69 -0.33 (-3.66%) As of 08/1/2025 03:59 PM Eastern Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for NPK International (NYSE:NPKI)CurrentInstitutional OwnershipPercentage80.81%Number ofInstitutional Buyers(last 12 months)20TotalInstitutional Inflows(last 12 months)$13.78MNumber ofInstitutional Sellers(last 12 months)0 Get NPKI Insider Trade Alerts Want to know when executives and insiders are buying or selling NPK International stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Skip Chart & View Institutional Buying and Selling Data NPKI Institutional Buying and Selling by Quarter NPK International Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/1/2025GWN Securities Inc.42,152$359K0.1%N/A0.050% 8/1/2025Teacher Retirement System of Texas12,487$106K0.0%N/A0.015% 8/1/2025Riverwater Partners LLC38,825$330K0.2%N/A0.046% 8/1/2025Envestnet Asset Management Inc.16,589$141K0.0%N/A0.020% 7/31/2025 Nisa Investment Advisors LLC5,272$45K0.0%N/A0.006% 7/31/2025 Oppenheimer Asset Management Inc.33,102$282K0.0%N/A0.039% 7/31/2025 AlphaQuest LLC21,837$186K0.0%N/A0.026% 7/30/2025 Bleakley Financial Group LLC25,994$221K0.0%N/A0.031% 7/28/2025 Ritholtz Wealth Management10,601$90K0.0%N/A0.013% 7/28/2025 Penbrook Management LLC68,585$584K0.4%N/A0.081% 7/25/2025 Penbrook Management LLC81,410$693K0.5%N/A0.096% 7/25/2025 CWM LLC3,152$27K0.0%N/A0.004% 7/23/2025 KLP Kapitalforvaltning AS15,100$129K0.0%N/A0.018% 7/18/2025 Northeast Financial Group Inc.93,810$798K0.2%N/A0.111% 7/17/2025 Janney Montgomery Scott LLC126,550$1.08M0.0%N/A0.150% 7/16/2025 Kathmere Capital Management LLC19,203$163K0.0%N/A0.023% 7/15/2025 Public Employees Retirement System of Ohio53,788$458K0.0%N/A0.064% 7/14/2025 GAMMA Investing LLC7,742$66K0.0%N/A0.009% 7/11/2025 Diversified Trust Co24,684$210K0.0%N/A0.029% 7/10/2025 NorthCrest Asset Manangement LLC21,285$188K0.0%N/A0.025% 7/9/2025 Harbor Capital Advisors Inc.894,793$7.62M0.3%N/A1.059% (Data available from 1/1/2016 forward) NPKI Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of NPKI shares? During the previous two years, 20 institutional investors and hedge funds held shares of NPK International. The most heavily invested institutionals were Harbor Capital Advisors Inc. ($7.62M), Janney Montgomery Scott LLC ($1.08M), Northeast Financial Group Inc. ($798K), Penbrook Management LLC ($584K), Public Employees Retirement System of Ohio ($458K), GWN Securities Inc. ($359K), and Riverwater Partners LLC ($330K).Learn more on NPK International's institutional investors. What percentage of NPK International's stock is owned by institutional investors? 80.81% of NPK International's stock is owned by institutional investors. Learn more on NPKI's institutional investor holdings. Which institutional investors have been buying NPK International's stock? Of the 20 institutional investors that purchased NPK International's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Harbor Capital Advisors Inc. ($894.79K), Penbrook Management LLC ($150.00K), Janney Montgomery Scott LLC ($126.55K), Northeast Financial Group Inc. ($93.81K), Public Employees Retirement System of Ohio ($53.79K), GWN Securities Inc. ($42.15K), and Riverwater Partners LLC ($38.83K). How much institutional buying is happening at NPK International? Institutional investors have bought a total of 1,616,961 shares in the last 24 months. This purchase volume represents approximately $13.78M in transactions. Related Companies HSAI Major Shareholders SEI Major Shareholders PSIX Major Shareholders EPAC Major Shareholders FLOC Major Shareholders ACMR Major Shareholders DNOW Major Shareholders AZTA Major Shareholders OUST Major Shareholders CECO Major Shareholders This page (NYSE:NPKI) was last updated on 8/2/2025 by MarketBeat.com Staff From Our PartnersIs Elon's empire crumbling?The Tesla Shock Nobody Sees Coming While headlines scream "Tesla is doomed"... 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