Hennessy Advisors Inc

SEC CIK: 0001145255
Latest filing: Jul 16, 2026

SEC filings (opens in a new tab)

MDU holding history

Mdu Resources Group Inc in every 13F filed by Hennessy Advisors Inc, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MDU overview All 13F holders of MDU Full Q2 2026 holdings

Shares (Q2 2026): 179,707
Value: $3.81M
% of portfolio: 0.1%
Quarters held: 22; Since Q1 2021

Holdings of MDU by Hennessy Advisors Inc, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	179,707	$3.81M	0.1%	00.0%	Unchanged	Holders
Q1 2026	179,707	$3.72M	0.1%	00.0%	Unchanged	Holders
Q4 2025	179,707	$3.51M	0.1%	−5,200−2.8%	Reduced	Holders
Q3 2025	184,907	$3.29M	0.1%	−1,621,300−89.8%	Reduced	Holders
Q2 2025	1,806,207	$30.1M	1.0%	−171,200−8.7%	Reduced	Holders
Q1 2025	1,977,407	$33.4M	1.1%	−177,600−8.2%	Reduced	Holders
Q4 2024	2,155,007	$38.8M	1.2%	+1,975,200+1,098.5%	Added	Holders
Q3 2024	179,807	$4.93M	0.2%	−7,000−3.7%	Reduced	Holders
Q2 2024	186,807	$4.69M	0.2%	+9,200+5.2%	Added	Holders
Q1 2024	177,607	$4.48M	0.2%	−8,000−4.3%	Reduced	Holders
Q4 2023	185,607	$3.68M	0.2%	−5,100−2.7%	Reduced	Holders
Q3 2023	190,707	$3.73M	0.3%	−300−0.2%	Reduced	Holders
Q2 2023	191,007	$4.00M	0.3%	+35,400+22.7%	Added	Holders
Q1 2023	155,607	$4.74M	0.3%	00.0%	Unchanged	Holders
Q4 2022	155,607	$4.72M	0.3%	−13,800−8.1%	Reduced	Holders
Q3 2022	169,407	$4.63M	0.3%	00.0%	Unchanged	Holders
Q2 2022	169,407	$4.57M	0.3%	+10,000+6.3%	Added	Holders
Q1 2022	159,407	$4.25M	0.2%	−7,700−4.6%	Reduced	Holders
Q4 2021	167,107	$5.15M	0.3%	−24,100−12.6%	Reduced	Holders
Q3 2021	191,207	$5.67M	0.3%	00.0%	Unchanged	Holders
Q2 2021	191,207	$5.99M	0.3%	−34,600−15.3%	Reduced	Holders
Q1 2021	225,807	$7.14M	0.4%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.