DHIL AUM $30.02B as of Oct 31, 2025; Proprietary $19.28B

Rhea-AI Filing Summary

Diamond Hill Investment Group (DHIL) reported assets under management of $30,020 million as of October 31, 2025 through its subsidiary, Diamond Hill Capital Management.

By vehicle, AUM included Proprietary Funds $19,280M, Separately Managed Accounts $5,237M, Collective Investment Trusts $1,679M, and Other Pooled Vehicles $3,824M. By strategy, the largest sleeves were Large Cap $15,399M, Short Duration Securitized Bond $4,930M, Core Fixed Income $3,622M, and Long-Short $2,250M, with additional allocations across Small/Mid Cap, Select, and other strategies.

8-K Event Classification

Item 8.01 — Other Events

1 item

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

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FAQ

What is DHIL's total AUM as of October 31, 2025?

Total assets under management were $30,020 million as of October 31, 2025.

How is DHIL's AUM allocated by investment vehicle?

By vehicle: Proprietary Funds $19,280M, Separately Managed Accounts $5,237M, Collective Investment Trusts $1,679M, Other Pooled Vehicles $3,824M.

Which DHIL investment strategy is the largest by AUM?

The Large Cap strategy was largest at $15,399 million.

What are DHIL's notable fixed income AUM figures?

Short Duration Securitized Bond $4,930M and Core Fixed Income $3,622M; other fixed income sleeves include Securitized Credit $127M and Long Duration Treasury $26M.

How much AUM is in DHIL's Long-Short strategy?

The Long-Short strategy totaled $2,250 million.

Which equity mid-cap segments does DHIL report and their AUM?

Equity segments include Small-Mid Cap $1,385M, Mid Cap $876M, and Small Cap $238M.

false000090910800009091082025-11-042025-11-04

United States

Securities and Exchange Commission

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): 11/4/2025

DIAMOND HILL INVESTMENT GROUP, INC.

(Exact name of registrant as specified in its charter)

Ohio		000-24498		65-0190407
(State or other jurisdiction of incorporation)		(Commission File Number)		(I.R.S. Employer Identification No.)

325 John H. McConnell Blvd, Suite 200, Columbus, Ohio 43215

(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: (614) 255-3333

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common stock, no par value		DHIL		The Nasdaq Stock Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01 Other Events

The following is a summary of assets under management as of October 31, 2025 of Diamond Hill Capital Management, Inc., a wholly owned subsidiary of Diamond Hill Investment Group, Inc. (in millions):

By Investment Vehicle
Proprietary Funds	$	19,280
Separately managed accounts		5,237
Collective investment trusts		1,679
Other pooled vehicles		3,824
Total	$	30,020
By Investment Strategy
Small Cap	$	238
Small-Mid Cap		1,385
Mid Cap		876
Large Cap		15,399
Large Cap Concentrated		160
Select		765
Long-Short		2,250
International		167
Micro Cap		44
Short Duration Securitized Bond		4,930
Securitized Credit		127
Securitized Total Return		31
Core Fixed Income		3,622
Long Duration Treasury		26
Total	$	30,020

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

		DIAMOND HILL INVESTMENT GROUP, INC.
Date:	11/4/2025	By:		/s/ Thomas E. Line
				Thomas E. Line, Chief Financial Officer and Treasurer