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NPK International (NPKI) Institutional Ownership

NPK International logo
$12.97 -0.29 (-2.19%)
As of 12:27 PM Eastern
This is a fair market value price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for NPK International (NYSE:NPKI)

Current
Institutional Ownership
Percentage
80.81%
Number of
Institutional Buyers
(last 12 months)
111
Total
Institutional Inflows
(last 12 months)
$221.88M
Number of
Institutional Sellers
(last 12 months)
91
Total
Institutional Outflows
(last 12 months)
$136.49M
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NPKI Institutional Buying and Selling by Quarter

NPK International Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026 Tidal Investments LLC50,490$803K0.0%+284.6%0.059%
9/9/2026 WINTON GROUP Ltd36,532$581K0.0%N/A0.043%
9/9/2026 Engineers Gate Manager LP17,325$276K0.0%-87.5%0.020%
9/9/2026 Pinnacle Wealth Management Advisory Group LLC16,878$269K0.0%-35.8%0.020%
9/9/2026 Squarepoint Ops LLC122,167$1.94M0.0%-11.5%0.144%
9/8/2026 Arizona State Retirement System22,158$353K0.0%-4.5%0.026%
8/24/2026 California State Teachers Retirement System1,762,064$28.03M0.0%+2,096.6%2.075%
8/21/2026 AXQ Capital LP48,652$774K0.1%N/A0.057%
8/21/2026 XML Financial LLC27,485$437K0.0%+120.1%0.032%
8/20/2026 Ancora Advisors LLC678,760$10.80M0.2%-6.7%0.799%
8/19/2026 Wellington Management Group LLP790,335$12.57M0.0%+198.7%0.931%
8/14/2026 Ancora Advisors LLC678,760$10.80M0.2%N/A0.799%
8/10/2026 Tieton Capital Management LLC820,845$13.06M3.8%N/A0.967%
8/6/2026 Bank of New York Mellon Corp242,570$3.86M0.0%N/A0.286%
7/10/2026 Wasatch Advisors LP2,811,593$44.73M0.3%-3.0%3.329%
6/16/2026 Empowered Funds LLC49,740$721K0.0%-86.8%0.059%
5/19/2026 NewEdge Advisors LLC10,152$147K0.0%-9.0%0.012%
5/19/2026 Bank of America Corp DE240,022$3.48M0.0%+21.4%0.284%
5/18/2026 Royal Bank of Canada2,404$35K0.0%-47.8%0.003%
5/18/2026 Electron Capital Partners LLC1,099,943$15.94M0.6%N/A1.302%
5/18/2026 Empowered Funds LLC49,740$721K0.0%-86.8%0.059%
5/16/2026 The Manufacturers Life Insurance Company37,493$543K0.0%+50.4%0.044%
5/16/2026 Quantinno Capital Management LP26,527$384K0.0%+22.5%0.031%
5/16/2026 Lazard Asset Management LLC158,527$2.30M0.0%-33.2%0.188%
5/15/2026 Rice Hall James & Associates LLC545,077$7.90M0.4%-0.8%0.645%
5/15/2026 Punch & Associates Investment Management Inc.1,818,790$26.35M1.5%-1.8%2.154%
5/15/2026 Granahan Investment Management LLC401,658$5.82M0.3%-30.8%0.476%
5/15/2026 Entropy Technologies LP10,436$151K0.0%N/A0.012%
5/14/2026 Renaissance Technologies LLC362,167$5.25M0.0%-30.3%0.429%
5/14/2026 Public Employees Retirement System of Ohio46,293$671K0.0%-13.5%0.055%
5/14/2026 Arrowstreet Capital Limited Partnership1,539,088$22.30M0.0%+46.3%1.822%
5/14/2026 Sei Investments Co.837,157$12.13M0.0%+121.6%0.991%
5/14/2026 Walleye Capital LLC58,425$847K0.0%N/A0.069%
5/14/2026 State of Wyoming46,713$677K0.1%+85.2%0.055%
5/13/2026 Cetera Investment Advisers22,354$324K0.0%+6.5%0.026%
5/8/2026 PNC Financial Services Group Inc.15,199$220K0.0%-11.9%0.018%
5/7/2026 Dimensional Fund Advisors LP3,983,658$57.72M0.0%-10.8%4.717%
5/7/2026 Roubaix Capital LLC269,935$3.91M1.8%-53.1%0.320%
5/5/2026 Bank of New York Mellon Corp266,284$3.86M0.0%-0.8%0.315%
5/5/2026 Sigma Planning Corp60,000$869K0.0%N/A0.071%
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5/4/2026 Calamos Advisors LLC353,627$5.12M0.0%-1.1%0.419%
5/4/2026 Principal Financial Group Inc.104,255$1.51M0.0%-9.9%0.124%
5/1/2026 Fifth Third Bancorp5,051$73K0.0%N/A0.006%
4/30/2026 Hsbc Holdings PLC52,549$764K0.0%+272.2%0.062%
4/27/2026 Y Intercept Hong Kong Ltd110,282$1.60M0.0%+4.4%0.131%
4/25/2026 Strs Ohio51,400$745K0.0%-7.6%0.061%
4/24/2026 MQS Management LLC13,938$202K0.1%+16.4%0.017%
4/23/2026 North Star Investment Management Corp.120,000$1.74M0.1%N/A0.142%
4/22/2026 Skylands Capital LLC164,300$2.38M0.3%-3.2%0.195%
4/22/2026 1492 Capital Management LLC176,003$2.55M1.0%-0.9%0.208%
4/22/2026 Pictet Asset Management Holding SA19,825$287K0.0%+26.3%0.023%
4/22/2026 Sterling Capital Management LLC2,719$39K0.0%-42.5%0.003%
4/21/2026 Wasatch Advisors LP2,899,021$42.01M0.3%+30.8%3.434%
4/21/2026 Pinnacle Wealth Management Advisory Group LLC26,295$381K0.0%-10.9%0.031%
4/20/2026 OP Asset Management Ltd333,418$4.83M0.0%N/A0.395%
4/17/2026 XML Financial LLC12,485$181K0.0%N/A0.015%
4/16/2026 SG Americas Securities LLC95,553$1.39M0.0%+143.3%0.113%
4/16/2026 ARS Investment Partners LLC41,209$597K0.0%-5.9%0.049%
4/16/2026 Diversified Trust Co31,038$450K0.0%+13.1%0.037%
3/20/2026 Hsbc Holdings PLC14,120$169K0.0%N/A0.017%
2/26/2026 Aristides Capital LLC15,754$188K0.0%N/A0.019%
2/18/2026 Mercer Global Advisors Inc. ADV24,363$290K0.0%+6.5%0.029%
2/18/2026 Empowered Funds LLC375,623$4.48M0.0%-14.6%0.445%
2/18/2026 Zacks Investment Management31,194$372K0.0%-17.6%0.037%
2/18/2026 nVerses Capital LLC12,274$146K0.3%N/A0.015%
2/18/2026 Uniplan Investment Counsel Inc.536,108$6.39M1.8%-4.7%0.634%
2/18/2026 Voloridge Investment Management LLC83,245$992K0.0%N/A0.099%
2/18/2026 Wellington Management Group LLP506,597$6.04M0.0%-23.4%0.600%
2/18/2026 Tudor Investment Corp ET AL224,475$2.68M0.0%-55.7%0.266%
2/18/2026 Susquehanna Fundamental Investments LLC39,043$465K0.0%+146.4%0.046%
2/18/2026 Oxford Asset Management LLP15,035$179K0.1%N/A0.018%
2/18/2026 Millennium Management LLC106,487$1.27M0.0%-36.3%0.126%
2/18/2026 Man Group plc63,327$755K0.0%N/A0.075%
2/18/2026 Engineers Gate Manager LP102,979$1.23M0.0%+505.4%0.122%
2/18/2026 Balyasny Asset Management L.P.109,824$1.31M0.0%N/A0.130%
2/18/2026 Boothbay Fund Management LLC69,290$826K0.0%+7.1%0.082%
2/18/2026 Bridgeway Capital Management LLC625,623$7.46M0.2%-9.3%0.740%
2/17/2026 AQR Capital Management LLC174,503$2.08M0.0%+35.8%0.207%
2/17/2026 Cetera Investment Advisers20,997$250K0.0%-7.1%0.025%
2/17/2026Northeast Financial Group Inc.65,902$786K0.2%-1.4%0.078%
2/17/2026 Lazard Asset Management LLC237,222$2.83M0.0%N/A0.281%
2/17/2026 Pennant Select LLC1,014,221$12.09M6.4%-4.5%1.200%
2/17/2026 ArrowMark Colorado Holdings LLC977,963$11.66M0.3%-6.6%1.157%
2/17/2026 Jump Financial LLC239,259$2.85M0.0%+9.8%0.283%
2/17/2026 Price T Rowe Associates Inc. MD61,736$736K0.0%+5.4%0.073%
2/17/2026 California State Teachers Retirement System80,829$963K0.0%+6.6%0.096%
2/17/2026 Russell Investments Group Ltd.1,880,927$22.42M0.0%-2.7%2.226%
2/17/2026 Punch & Associates Investment Management Inc.1,852,804$22.09M1.3%-2.2%2.193%
2/17/2026 Granahan Investment Management LLC580,447$6.92M0.3%+16.1%0.687%
2/17/2026 State of Wisconsin Investment Board93,891$1.12M0.0%+7.2%0.111%
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2/17/2026 Graham Capital Management L.P.45,768$546K0.0%+24.6%0.054%
2/17/2026 Magnetar Financial LLC32,027$382K0.0%N/A0.038%
2/17/2026 Rothschild Wealth LLC138,500$1.65M0.2%N/A0.164%
2/17/2026 Rice Hall James & Associates LLC549,721$6.55M0.4%-4.2%0.651%
2/16/2026 Squarepoint Ops LLC58,656$699K0.0%+229.4%0.069%
2/16/2026 Verition Fund Management LLC175,974$2.10M0.0%+170.6%0.208%
2/16/2026 Panagora Asset Management Inc.669,303$7.98M0.0%-2.0%0.792%
2/16/2026 Mariner LLC10,664$127K0.0%N/A0.013%
2/16/2026 Kennedy Capital Management LLC184,290$2.20M0.0%-0.6%0.218%
2/16/2026 Landscape Capital Management L.L.C.11,015$131K0.0%N/A0.013%


NPKI Institutional Ownership - Frequently Asked Questions

During the previous two years, 195 institutional investors and hedge funds held shares of NPK International. The most heavily invested institutionals were Ameriprise Financial Inc. ($59.35M), Dimensional Fund Advisors LP ($57.72M), Vanguard Group Inc. ($56.10M), Wasatch Advisors LP ($44.73M), American Century Companies Inc. ($33.60M), California State Teachers Retirement System ($28.03M), and Punch & Associates Investment Management Inc. ($26.35M).Learn more on NPK International's institutional investors.

80.81% of NPK International's stock is owned by institutional investors. Learn more on NPKI's institutional investor holdings.

Of the 171 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: Ameriprise Financial Inc. ($6.10M), Wasatch Advisors LP ($3.66M), American Century Companies Inc. ($2.97M), Conversant Capital LLC ($2.71M), Geode Capital Management LLC ($2.34M), Russell Investments Group Ltd. ($1.93M), and Tieton Capital Management LLC ($1.80M).

Institutional investors have bought a total of 16,714,357 shares in the last 24 months. This purchase volume represents approximately $221.88M in transactions.

Of the 91 institutional investors that sold NPK International's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Dimensional Fund Advisors LP ($1.35M), Perritt Capital Management Inc ($1.05M), Ameriprise Financial Inc. ($851.45K), Wasatch Advisors LP ($849.28K), Empowered Funds LLC ($780.15K), Harbor Capital Advisors Inc. ($676.14K), and Royce & Associates LP ($380.87K).

Institutional investors have sold a total of 11,253,119 shares in the last 24 months. This volume of shares sold represents approximately $136.49M in transactions.


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Institutional ownership data for NYSE:NPKI is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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