Hennessy Advisors files 13F: $2.77B holdings

HENNESSY ADVISORS INC filed a Form 13F reporting institutional holdings totaling $2,769,080,087 across 278 reported positions.

Accepted by SEC EDGAR 04/21/2026 - 10:21 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

HENNESSY ADVISORS INC filed a Form 13F reporting institutional holdings totaling $2,769,080,087 across 278 reported positions. The report is signed by Teresa M. Nilsen, President and Chief Operating Officer, with a signature date of 04-16-2026.

Key Figures

Form type: 13F-HR Information Table Value Total: $2,769,080,087 Form 13F Information Table Entry Total: 278 positions +1 more

4 metrics

Form type 13F-HR Quarterly institutional holdings report

Information Table Value Total $2,769,080,087 Form 13F report summary value total

Form 13F Information Table Entry Total 278 positions Number of reported holdings entries

Report signer Teresa M. Nilsen President and Chief Operating Officer, signed 04-16-2026

Key Terms

Form 13F, Information Table Value Total, 13F HOLDINGS REPORT

3 terms

Form 13F regulatory

"Form 13F Summary Page - Form 13F Information Table Entry Total"

A Form 13F is a quarterly filing that large investment managers must submit to disclose their holdings in publicly traded stocks and certain other securities. It acts like a peek into the portfolios of big investors, helping other market participants see what large players are buying or selling and offering clues about investment trends, crowded trades, and potential market impact.

Information Table Value Total financial

"Form 13F Information Table Value Total: 2,769,080,087"

13F HOLDINGS REPORT regulatory

"Report Type X | 13F HOLDINGS REPORT."

FAQ

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

What does HNNA's Form 13F disclose?

Hennessy Advisors reports holdings valued at $2,769,080,087 across 278 positions. The filing lists the manager's reported equity positions as of the quarter-end for regulatory transparency and is signed by Teresa M. Nilsen on 04-16-2026.

When was Hennessy Advisors' 13F signed?

The Form 13F was signed on 04-16-2026 by Teresa M. Nilsen. The signature certifies that the information reported is true, correct, and complete for the institutional manager's holdings disclosed in the filing.

How many holdings did HNNA report in this 13F?

Hennessy Advisors reported 278 holdings entries. The Form 13F Information Table Entry Total equals 278, representing individual positions disclosed by the institutional manager in this quarterly filing.

What is the filing type and purpose for HNNA's submission?

The document is a Form 13F holdings report (13F-HR). It discloses the institutional investment manager's equity positions for SEC transparency and does not itself indicate trades, strategy, or timing beyond the reported holdings.

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

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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: 03-31-2026

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	04-16-2026
[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:		278
	Form 13F Information Table Value Total:		2,769,080,087
			(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