Campbell & CO Investment Adviser LLC

Position in MDU — Mdu Resources Group Inc

CIK 1353570 BALTIMORE, MD

Position in MDU

as of Jun 30, 2026 · filed Aug 3, 2026 Compact

Position Value

$3,115,897

-$644,928 QoQ

Shares Held

146,907

-19.1% QoQ

Ownership

0.070%

of shares outstanding

% of Portfolio

0.16%

of 13F equity value

Holder Rank

#22

of 183 holders

Holding Since

Jun 2021

14 quarters on record

Voting authority Sole 0% Shared 0% None 100%

Utilities · as of Jun 30, 2026

Campbell & CO Investment Adviser LLC holds $31,420,230 across 5 Utilities - Regulated Gas names. MDU ranks #4 (9.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ATO	Atmos Energy Corp	84,361	$14,532,869
2	OGS	ONE Gas, Inc.	98,346	$7,579,526
3	SR	Spire Inc	75,034	$5,859,405
4	MDU	Mdu Resources Group Inc This page	146,907	$3,115,897
5	CPK	Chesapeake Utilities Corp	2,715	$332,533

14 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$3,115,897	146,907	-19.1%	Shares	Sole	2026-08-03
2026-03-31	$3,760,825	181,507	+109.1%	Shares	Sole	2026-05-15
2025-12-31	$1,694,062	86,786	-47.9%	Shares	Sole	2026-02-12
2025-09-30	$2,967,163	166,601	-0.3%	Shares	Sole	2025-10-28
2025-06-30	$2,785,523	167,098	+1.5%	Shares	Sole	2025-08-07
2025-03-31	$2,784,451	164,663	+592.9%	Shares	Sole	2025-05-14
2024-12-31	$428,245	23,765	+21.4%	Shares	Sole	2025-02-10
2024-06-30	—	19,577	-8.6%	Shares	Sole	2024-08-13
2024-03-31	—	21,409	-78.7%	Shares	Sole	2024-05-10
2023-12-31	—	100,303	+84.8%	Shares	Sole	2024-02-13
2023-09-30	—	54,279	+59.9%	Shares	Sole	2023-11-08
2022-06-30	—	33,943	+118.5%	Shares	Sole	2022-08-09
2021-09-30	—	15,538	+33.5%	Shares	Sole	2021-11-10
2021-06-30	—	11,638	—	Shares	Sole	2021-08-11
No filing history on record for this holder in this stock.