Hennessy Advisors Inc

SEC CIK: 0001145255
Latest filing: Jul 16, 2026

SEC filings (opens in a new tab)

OGS holding history

ONE Gas, 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.

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

Shares (Q2 2026): 83,175
Value: $6.41M
% of portfolio: 0.2%
Quarters held: 22; Since Q1 2021

Holdings of OGS by Hennessy Advisors Inc, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	83,175	$6.41M	0.2%	+7,100+9.3%	Added	Holders
Q1 2026	76,075	$6.55M	0.2%	00.0%	Unchanged	Holders
Q4 2025	76,075	$5.88M	0.2%	−2,800−3.5%	Reduced	Holders
Q3 2025	78,875	$6.38M	0.2%	−11,800−13.0%	Reduced	Holders
Q2 2025	90,675	$6.52M	0.2%	+2,100+2.4%	Added	Holders
Q1 2025	88,575	$6.70M	0.2%	+800+0.9%	Added	Holders
Q4 2024	87,775	$6.08M	0.2%	+2,400+2.8%	Added	Holders
Q3 2024	85,375	$6.35M	0.2%	−3,300−3.7%	Reduced	Holders
Q2 2024	88,675	$5.66M	0.2%	+1,500+1.7%	Added	Holders
Q1 2024	87,175	$5.63M	0.2%	−2,300−2.6%	Reduced	Holders
Q4 2023	89,475	$5.70M	0.3%	−2,400−2.6%	Reduced	Holders
Q3 2023	91,875	$6.27M	0.4%	−400−0.4%	Reduced	Holders
Q2 2023	92,275	$7.09M	0.5%	−3,800−4.0%	Reduced	Holders
Q1 2023	96,075	$7.61M	0.6%	00.0%	Unchanged	Holders
Q4 2022	96,075	$7.28M	0.5%	−9,300−8.8%	Reduced	Holders
Q3 2022	105,375	$7.42M	0.5%	00.0%	Unchanged	Holders
Q2 2022	105,375	$8.55M	0.5%	−7,200−6.4%	Reduced	Holders
Q1 2022	112,575	$9.93M	0.5%	−1,300−1.1%	Reduced	Holders
Q4 2021	113,875	$8.84M	0.5%	−19,500−14.6%	Reduced	Holders
Q3 2021	133,375	$8.45M	0.5%	−4,500−3.3%	Reduced	Holders
Q2 2021	137,875	$10.2M	0.6%	−4,000−2.8%	Reduced	Holders
Q1 2021	141,875	$10.9M	0.6%	–	–	Holders

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