Question 1

How many shares of NPKI does MARSHALL WACE, LLP own?

Accepted Answer

As of 2026-Q2, MARSHALL WACE, LLP holds 335,734 shares of NPKI (NPK INTERNATIONAL INC).

Question 2

What is MARSHALL WACE, LLP's NPKI position worth?

Accepted Answer

As of 2026-Q2, MARSHALL WACE, LLP's NPKI position is worth $5.3M.

Question 3

Is MARSHALL WACE, LLP buying or selling NPKI?

Accepted Answer

In 2026-Q2, MARSHALL WACE, LLP increased their NPKI position (+520.4% change in shares).

Question 4

When did MARSHALL WACE, LLP first buy NPKI?

Accepted Answer

Based on available 13F filings, MARSHALL WACE, LLP first reported a position in NPKI in 2024-Q3. They have held the position across 16 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	335,734	+520.4%	$5.3M	0.0%	$15.91	44
2026-Q1	New	54,117	—	$784,156	0.0%	$13.69	34
2024-Q4	Exited	0	-100.0%	$0	0.0%	$7.45	0
2024-Q3	Decreased	12,043	-83.9%	$83,458	0.0%	$6.92	0