SIMPLEX TRADING, LLC

Position in KNF — Knife River Corp

CIK 1488542 CHICAGO, IL

Position in KNF

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$83

+$81 QoQ

Shares Held

-97.4% QoQ

Ownership

0.000%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#387

of 391 holders

Holding Since

Sep 2023

5 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $2,389,068 across 6 Building Materials names. KNF ranks #6 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMRZ	Amrize Ltd	19,267	$1,026,931
2	MLM	Martin Marietta Materials Inc	1,606	$926,180
3	JHX	James Hardie Industries plc	14,523	$380,212
4	EXP	Eagle Materials Inc	190	$42,750
5	TTAM	Titan America SA	692	$12,912
6	KNF	Knife River Corp This page	1	$83

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$83	1	-97.4%	Shares	Sole	2026-08-12
2025-09-30	$2	39	-98.4%	Shares	Sole	2025-11-12
2025-03-31	$222,999	2,472	+37.3%	Shares	Sole	2025-05-12
2023-12-31	$119,124	1,800	+15.7%	Shares	Sole	2024-02-02
2023-09-30	$75,979	1,556	—	Shares	Sole	2023-11-01
No filing history on record for this holder in this stock.