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NPKI · NPK International Inc.

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$13.18 -0.50 (-3.65%) At close · Aug 24
Market Cap
$1.12B
Shares
84.91M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 255
Total Value: $1,248,337,740
Total Shares: 78,462,511

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 255 13F filers · Δ vs Mar 31, 2026
Top Holder
10.1%
Sep 2023 → Jun 2026 · range 8.7% – 11.2%
+0.6 pts
Top 5
29.1%
Sep 2023 → Jun 2026 · range 29.1% – 43.1%
−1.6 pts
Top 10
43.2%
Sep 2023 → Jun 2026 · range 43.2% – 59.6%
−1.9 pts
HHI
290
Sep 2023 → Jun 2026 · range 290 – 484
Broadly held−21

Quarterly Activity

vs Mar 31, 2026
New
39
Increased
99
Decreased
84
Sold Out
31
Unchanged
33
Holder count: +8
Institutional value: +13.4%
Shares held: +3.2%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 256
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 71829 CUSIP 651718504 13F (30d) 240 filings 228 filers Visit website Investor relations