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NPK International NPKI

US equityMarket cap rank #3262Building Products & Equipment

$11.42 +$0.01 (+0.09%)

Market open · Oct 8, 10:00 am ET · After hours $11.41 0.00%

Open$11.33

Prev close$11.41

Day range$11.36 – $11.47

Volume13.9K

Market cap$969.67M

P/E (TTM)23.3

Dividend yield–

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership100.0%-1.50 pts vs. prior quarter

Institutions holding304+0 vs. prior quarter

Insider trades (recent)18 buys / 30 sellsNet selling

Short interest3.27% of floatDays to cover 3.9 · as of 15 Sep 2026

Short-sale volume share19.2%5-day average of daily volume

Short-sale volume as % of daily volume

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$4.67M (6 inflow days, 14 outflow days).

Net flow by order size, last 20 sessions

Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.

The five largest holders on file together own 29.6% of shares outstanding.

Largest holders

BlackRock9.35%
Threadneedle Investment Services Limited5.73%
Columbia Management Investment Advisers, LLC5.28%
Vanguard Capital Management, LLC4.95%
Dimensional Fund Advisors4.29%
American Century Investment Management3.68%
Wasatch Advisors LP3.31%
Emerald Advisers, LLC3.12%

By investor type

Mutual Fund85.63%
Hedge Fund8.50%
Individual/Insider4.71%
Public Company2.62%
Private Company1.08%
Insurance Company0.96%
Government Pension Fund0.79%
Sovereign Wealth Fund0.39%

Reported short interest has risen from 2.94% to 3.27% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Recent institutional activity

Holder	Type	Period	Share change	New stake
Emerald Advisers, LLC	Mutual Fund	2026/Q3	+2,647,965	3.1%
MFS Investment Management	Mutual Fund	2026/Q3	+1,452,984	1.7%
Millennium Management LLC	Hedge Fund	2026/Q3	+891,036	1.2%
BlackRock	Mutual Fund	2026/Q3	+737,798	9.4%
Invesco Capital Management LLC	Mutual Fund	2026/Q3	+730,677	1.1%
First Trust Advisors L.P.	Mutual Fund	2026/Q3	+538,191	0.6%
Wellington Management Group	Mutual Fund	2026/Q3	+525,718	0.9%
First Eagle Investment Management, LLC	Mutual Fund	2026/Q3	+447,181	0.8%
Norges Bank Investment Management	Sovereign Wealth Fund	2026/Q3	+323,100	0.4%
Citadel Advisors LLC	Hedge Fund	2026/Q3	+303,814	0.4%
Marshall Wace LLP	Hedge Fund	2026/Q3	+281,617	0.4%
Edgestream Partners, L.P.	Hedge Fund	2026/Q3	+258,097	0.3%
Vanguard Capital Management, LLC	Mutual Fund	2026/Q3	+241,683	4.9%
D. E. Shaw & Co., L.P.	Hedge Fund	2026/Q3	+230,564	0.4%
Teacher Retirement System of Texas	Government Pension Fund	2026/Q3	+217,565	0.3%

Institutional buy/sell activity by reporting period, largest moves first.

Insider transactions

Date	Insider	Title	Transaction	Shares	Price	Held after
21 Sep 2026	James Barton	Executive Vice President of Commercial Growth & Operations	Other Acquisition	+12,850	–	12,850
8 Sep 2026	Matthew Warren	Chief Accounting Officer	Automatic Disposition	-2,991	$13.41	51,439
30 Aug 2026	Matthew Warren	Chief Accounting Officer	Initial Statement of Beneficial	+0	–	21,066
26 Aug 2026	Rose Robeson	Independent Chairperson	Automatic Disposition	-10,000	$13.49	215,147
16 Aug 2026	Michael Lewis	Independent Director	Automatic Disposition	-2,013	$14.26	135,865
27 Jul 2026	Kristen Pederson	Independent Director	Other Acquisition	+6,614	–	6,614
7 Jun 2026	Lori Briggs	Corporate VP & President of Industrial Solutions	Automatic Disposition	-8,325	$14.75	178,156
2 Jun 2026	Matthew Lanigan	Chief Executive Officer	Automatic Disposition	-167,375	$14.43	1,024,948
1 Jun 2026	Lori Briggs	Corporate VP & President of Industrial Solutions	Derivative Exercise and Sale	-10,446	$14.58	186,481
31 May 2026	Gregg Piontek	Senior Vice President	Sale to Issuer	-36,089	$14.31	808,709
31 May 2026	Gregg Piontek	Senior Vice President	Derivative Exercise and Retained	+40,379	–	808,709
31 May 2026	Matthew Lanigan	Chief Executive Officer	Sale to Issuer	-89,549	$14.31	908,275
31 May 2026	Matthew Lanigan	Chief Executive Officer	Derivative Exercise and Retained	+100,188	–	908,275
31 May 2026	Lori Briggs	Corporate VP & President of Industrial Solutions	Sale to Issuer	-21,755	$14.31	186,481
31 May 2026	Lori Briggs	Corporate VP & President of Industrial Solutions	Derivative Exercise and Retained	+13,894	–	186,481
31 May 2026	M. Fruge	VP, General Counsel, Chief Compliance Officer & Corporate Secretary	Sale to Issuer	-15,848	$14.31	230,376
31 May 2026	M. Fruge	VP, General Counsel, Chief Compliance Officer & Corporate Secretary	Derivative Exercise and Retained	+17,274	–	230,376
19 May 2026	Rose Robeson	Independent Chairperson	Other Acquisition	+10,862	–	225,147
19 May 2026	Michael Lewis	Independent Director	Other Acquisition	+8,558	–	137,878
19 May 2026	John Minge	Independent Director	Other Acquisition	+8,558	–	253,942

From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.

Short interest, by report

Report date	Shares short	% of float	Days to cover
15 Sep 2026	2,776,208	3.3%	3.9
31 Aug 2026	3,223,310	3.8%	3.9
14 Aug 2026	3,097,902	3.6%	4.3
31 Jul 2026	2,531,987	3.0%	2.8
15 Jul 2026	2,455,772	2.9%	2.7
30 Jun 2026	2,484,024	2.9%	1.5

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