Hennessy Advisors reports $2.66B in holdings

The report is marked as covering all holdings of the manager and lists zero other included managers.

Rhea-AI Filing Summary

Hennessy Advisors Inc., acting as the institutional investment manager, submitted a Form 13F holdings report listing 287 information-table entries with a reported value total of $2,656,293,021, rounded to the nearest dollar. The selected report type indicates that all holdings of the manager are included; the summary lists zero other included managers.

Key Figures

Form 13F information-table entries: 287 entries Reported value total: $2,656,293,021

2 metrics

Form 13F information-table entries 287 entries Form 13F summary

Reported value total $2,656,293,021 Form 13F information table; rounded to the nearest dollar

Key Terms

13F HOLDINGS REPORT, Form 13F Information Table, Other Included Managers

3 terms

13F HOLDINGS REPORT regulatory

"13F HOLDINGS REPORT"

Form 13F Information Table regulatory

"Form 13F Information Table Entry Total"

Other Included Managers regulatory

"Number of Other Included Managers"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What value did Hennessy Advisors (HNNA) report in its Form 13F?

Hennessy Advisors Inc. reported a Form 13F information-table value total of $2,656,293,021, rounded to the nearest dollar.

How many holdings entries did Hennessy Advisors (HNNA) report?

The report lists 287 information-table entries.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/28/2026 - 01:44 PM EDT Accepted by SEC EDGAR 10/28/2026 - 01:43 PM EDT Learn about SEC filing dates

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F COVER PAGE

OMB APPROVAL

OMB Number:			3235-0006
Estimated average burden
hours per response:			23.8

Report for the Calendar Year or Quarter Ended: 09-30-2026

Check here if Amendment		Amendment Number:
This Amendment (Check only one.):		is a restatement.
		adds new holdings entries.

Institutional Investment Manager Filing this Report:
Name:	HENNESSY ADVISORS INC
Address:	7250 REDWOOD BLVD.
	SUITE 200
	NOVATO, CA 94945
Form 13F File Number:	028-06715
CRD Number (if applicable):
SEC File Number (if applicable):

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:
Name:		Teresa M. Nilsen
Title:		President and Chief Operating Officer
Phone:		415-899-1555
Signature, Place, and Date of Signing:
/s/Teresa M. Nilsen			NOVATO, CA	10-28-2026
[Signature]			[City, State]	[Date]

Report Type (Check only one.):
X	13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.)
	13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).)
	13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).)

Form 13F Summary Page
	Report Summary:
	Number of Other Included Managers:		0
	Form 13F Information Table Entry Total:		287
	Form 13F Information Table Value Total:		2,656,293,021
			(round to nearest dollar)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report.

[If there are no entries in this list, state "NONE" and omit the column headings and list entries.]

NONE