Company · Ownership research

NPK International Inc. NPKI

CIK 0000071829 · CUSIP 651718504

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 651718504 (NPKI), not CUSIP 651718904 (NPKI), and does not merge CUSIPs.

This page lists the top 20 of 190 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$53.11M 7,663,591 shares	0.01%	+1.25M(+19.50%)Added	SEC filing ↗ Nov 14, 2024	▾
02	BlackRock, Inc. CIK 2012383 · View history	$48.46M 6,993,345 shares	0.00%	—	SEC filing ↗ Nov 13, 2024	▾
03	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$42.69M 6,160,260 shares	0.01%	-44.24K(-0.70%)Reduced	SEC filing ↗ Nov 7, 2024	▾
04	VANGUARD GROUP INC CIK 102909 · View history	$36.48M 5,263,547 shares	0.00%	+134.06K(+2.60%)Added	SEC filing ↗ Nov 13, 2024	▾
05	Conversant Capital LLC CIK 1850901 · View history	$27.42M 3,956,852 shares	5.12%	0(0.00%)Unchanged	SEC filing ↗ Nov 14, 2024	▾
06	ArrowMark Colorado Holdings LLC CIK 1483859 · View history	$18.51M 2,670,954 shares	0.24%	-685.57K(-20.40%)Reduced	SEC filing ↗ Nov 14, 2024	▾
07	MORGAN STANLEY CIK 895421 · Amended · View history	$16.93M 2,442,942 shares	0.00%	-59.80K(-2.40%)Reduced	SEC filing ↗ May 14, 2025	▾
08	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$16.34M 2,358,454 shares	0.01%	+466.71K(+24.70%)Added	SEC filing ↗ Nov 12, 2024	▾
09	STATE STREET CORP CIK 93751 · View history	$15.76M 2,274,460 shares	0.00%	+69.80K(+3.20%)Added	SEC filing ↗ Nov 14, 2024	▾
10	ROYCE & ASSOCIATES LP CIK 906304 · View history	$15.19M 2,191,552 shares	0.14%	+61.13K(+2.90%)Added	SEC filing ↗ Nov 6, 2024	▾
11	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$13.45M 1,940,915 shares	0.00%	+154.21K(+8.60%)Added	SEC filing ↗ Nov 12, 2024	▾
12	Boston Partners CIK 1386060 · View history	$12.00M 1,724,416 shares	0.01%	-26.56K(-1.50%)Reduced	SEC filing ↗ Nov 12, 2024	▾
13	PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. CIK 1238990 · View history	$9.75M 1,407,100 shares	0.54%	+1.41MNew	SEC filing ↗ Nov 14, 2024	▾
14	LOOMIS SAYLES & CO L P CIK 312348 · View history	$8.35M 1,204,405 shares	0.01%	-51.57K(-4.10%)Reduced	SEC filing ↗ Nov 13, 2024	▾
15	Ancora Advisors LLC CIK 1446114 · View history	$7.99M 1,152,505 shares	0.18%	+263.38K(+29.60%)Added	SEC filing ↗ Nov 14, 2024	▾
16	NORTHERN TRUST CORP CIK 73124 · View history	$7.61M 1,097,891 shares	0.00%	+59.90K(+5.80%)Added	SEC filing ↗ Nov 13, 2024	▾
17	Russell Investments Group, Ltd. CIK 1692234 · View history	$6.91M 997,389 shares	0.01%	+49.86K(+5.30%)Added	SEC filing ↗ Nov 13, 2024	▾
18	Pennant Select, LLC CIK 2011563 · View history	$6.86M 990,000 shares	4.84%	+390.00K(+65.00%)Added	SEC filing ↗ Nov 14, 2024	▾
19	FRANKLIN RESOURCES INC CIK 38777 · Amended · View history	$5.96M 838,273 shares	0.00%	-116.75K(-12.20%)Reduced	SEC filing ↗ Nov 27, 2024	▾
20	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$5.96M 859,341 shares	0.01%	+206.34K(+31.60%)Added	SEC filing ↗ Nov 13, 2024	▾

Showing 20 / 190 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

190

Cancelled or null records excluded

Disclosed shares

73,720,398

Not deduplicated across managers

Disclosed value

$511.33M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

NPK International Inc. · Q3 2024

Explore all 190 reporting institutions.

This page includes 20 of 190 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 190 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"651718504","quarter":"2024Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.