NPKI

NPK INTERNATIONAL INC
USCUSIP 651718504
Institutional Owners
82
+13 QoQ
13F Value Held
$248.2M
Insider Net · 180d
-$152K
0↑ 1↓
Recent Filings
4
Smart-money sentimentBearish
BearishBullish
13F funds (latest Q)42 adding · 34 trimming
Insider net (180d)−$152K
Price history not yet available for NPKI.

Top institutional holders

82 13F filers
#FundPosition valueSharesLast moveAs of
1VANGUARD CAPITAL MANAGEMENT LLC
$49.6M
3.42MNewQ1 2026
2WASATCH ADVISORS LP
$42.0M
2.90MAddedQ1 2026
3STATE STREET CORP
$28.3M
1.96MReducedQ1 2026
4PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.
$26.4M
1.82MReducedQ1 2026
5VANGUARD PORTFOLIO MANAGEMENT LLC
$12.5M
861.5KNewQ1 2026
6PANAGORA ASSET MANAGEMENT INC
$9.8M
677.6KAddedQ1 2026
7ArrowMark Colorado Holdings LLC
$8.2M
566.4KReducedQ1 2026
8RICE HALL JAMES & ASSOCIATES, LLC
$7.9M
545.1KReducedQ1 2026
9VANGUARD FIDUCIARY TRUST CO
$7.8M
536.0KNewQ1 2026
10OBERWEIS ASSET MANAGEMENT INC/
$7.5M
518.1KAddedQ1 2026
11Granahan Investment Management, LLC
$5.8M
401.7KReducedQ1 2026
12JACOBS LEVY EQUITY MANAGEMENT, INC
$5.5M
381.4KReducedQ1 2026
13Point72 Asset Management, L.P.
$4.4M
304.2KReducedQ1 2026
14First Eagle Investment Management, LLC
$4.0M
273.8KNewQ1 2026
15GILDER GAGNON HOWE & CO LLC
$2.3M
160.6KReducedQ1 2026
16Engineers Gate Manager LP
$2.0M
138.9KAddedQ1 2026
17Man Group plc
$1.8M
124.8KAddedQ1 2026
18Y-Intercept (Hong Kong) Ltd
$1.6M
110.3KAddedQ1 2026
19Calamos Advisors LLC
$1.5M
106.8KReducedQ1 2026
20OP Asset Management Ltd
$1.2M
104.3KAddedQ4 2025
21PINNACLE ASSOCIATES LTD
$1.1M
76.5KAddedQ1 2026
22ROTHSCHILD INVESTMENT LLC
$1.0M
69.0KReducedQ1 2026
23Sigma Planning Corp
$869K
60.0KNewQ1 2026
24CITADEL ADVISORS LLC
$865K
59.7KReducedQ1 2026
25Walleye Capital LLC
$847K
58.4KNewQ1 2026

Fund activity — latest quarter

Opened (NEW)
20
funds
Added
22
funds
Reduced
29
funds
Exited
5
funds

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$152K
1 insiders
Net
-$152K
1 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Jun 2, 2026Briggs LoriVP & President, Ind. SolutionsSell (S)10.4K$152K
Jun 1, 2026Fruge Mary CelesteVP, General Counseldisposed (F)5.2K$75K
Jun 1, 2026Fruge Mary CelesteVP, General Counseldisposed (F)6.8K$97K
Jun 1, 2026Fruge Mary CelesteVP, General Counselacquired (M)17.3K$0
Jun 1, 2026Fruge Mary CelesteVP, General Counseldisposed (M)17.3K$0
Jun 1, 2026LANIGAN MATTHEWPresident & CEO, Directordisposed (F)22.2K$318K
Jun 1, 2026LANIGAN MATTHEWPresident & CEO, Directordisposed (F)27.9K$399K
Jun 1, 2026LANIGAN MATTHEWPresident & CEO, Directordisposed (F)39.4K$564K
Jun 1, 2026LANIGAN MATTHEWPresident & CEO, Directoracquired (M)100.2K$0
Jun 1, 2026LANIGAN MATTHEWPresident & CEO, Directordisposed (M)100.2K$0
Jun 1, 2026Piontek GreggSenior Vice President and CFOdisposed (F)9.0K$128K
Jun 1, 2026Piontek GreggSenior Vice President and CFOdisposed (F)15.9K$227K

Institutional ownership over time

76 funds+75 since Q2 2022
03876Q2 2022Q1 2023Q4 2023Q3 2024Q2 2025Q1 2026
funds holding aggregate valuelatest $240M

Funds that own NPKI also own

CompanyCo-held byCombined value
Microsoft Corp.MSFT75 funds$145.3B
Jpmorgan Chase & Co - USJPM73 funds$46.6B
Nvidia Corp - USNVDA72 funds$220.2B
Alphabet, Inc. Cl AGOOGL72 funds$86.5B
Apple, Inc.AAPL71 funds$192.2B
Amazon.com IncAMZN71 funds$105.0B
Meta Platforms Inc-ClasMETA71 funds$67.1B
Costco Wholesale Corp - USCOST71 funds$24.0B
Berkshire Hathaway Inc-BRK/B70 funds$42.5B
LILLY ELI & CO COMLLY70 funds$41.2B
Micron Technology Inc - USMU70 funds$24.1B
Mastercard, Inc.MA70 funds$23.6B

Ranked by how many of NPKI's institutional holders also hold each name — a cross-fund conviction signal. Via the MCP server (ticker.co_held).

Recent filings

4 shown

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for NPKI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.