Diamond Hill (NASDAQ: DHIL) details $28,072M in assets under management by strategy

Rhea-AI Filing Summary

Diamond Hill Investment Group, Inc. reported that its subsidiary, Diamond Hill Capital Management, had total assets under management of 28,072 million as of February 28, 2026. The largest share was in proprietary funds at 17,754 million, followed by separately managed accounts at 4,880 million and other pooled vehicles at 3,915 million.

By investment strategy, Large Cap equity was the biggest category with 12,450 million in assets, while Short Duration Securitized Bond held 5,321 million and Core Fixed Income held 3,897 million. Smaller strategies included Long-Short, Select, and various securitized and international offerings.

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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): 3/4/2026

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 February 28. 2026 of Diamond Hill Capital Management, Inc., a wholly owned subsidiary of Diamond Hill Investment Group, Inc. (in millions):

By Investment Vehicle
Proprietary Funds	$	17,754
Separately managed accounts		4,880
Collective investment trusts		1,523
Other pooled vehicles		3,915
Total		28,072
By Investment Strategy
Small Cap	$	288
Small-Mid Cap		1,431
Mid Cap		949
Large Cap		12,450
Large Cap Concentrated		191
Select		823
Long-Short		2,288
International		182
Micro Cap		52
Short Duration Securitized Bond		5,321
Securitized Credit		141
Securitized Total Return		32
Core Fixed Income		3,897
Long Duration Treasury		27
Total	$	28,072

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:	3/4/2026	By:		/s/ Thomas E. Line
				Thomas E. Line, Chief Financial Officer and Treasurer

FAQ

What total assets under management did DHIL report as of February 28, 2026?

Diamond Hill Investment Group reported total assets under management of 28,072 million as of February 28, 2026. This figure covers all vehicles managed by its subsidiary Diamond Hill Capital Management, including funds, separate accounts, collective investment trusts, and other pooled investment structures.

How are Diamond Hill’s assets under management split by investment vehicle?

Most assets under management are in proprietary funds at 17,754 million. Separately managed accounts total 4,880 million, collective investment trusts hold 1,523 million, and other pooled vehicles account for 3,915 million, together forming Diamond Hill’s 28,072 million in managed assets.

Which investment strategies are largest in Diamond Hill’s AUM mix?

The largest strategy is Large Cap with 12,450 million in assets. Short Duration Securitized Bond follows with 5,321 million, and Core Fixed Income has 3,897 million. Other strategies include Long-Short, Select, Small-Mid Cap, Mid Cap, and several specialized securitized and international strategies.

How much does Diamond Hill manage in fixed income and securitized strategies?

Diamond Hill manages significant assets in fixed income and securitized strategies, including 5,321 million in Short Duration Securitized Bond and 3,897 million in Core Fixed Income. Additional securitized strategies—Securitized Credit and Securitized Total Return—hold 141 million and 32 million, respectively, within the overall platform.

What smaller equity strategies does Diamond Hill report in this filing?

Beyond its large Large Cap strategy, Diamond Hill reports smaller equity strategies including Small Cap at 288 million, Small-Mid Cap at 1,431 million, Mid Cap at 949 million, Large Cap Concentrated at 191 million, Select at 823 million, International at 182 million, and Micro Cap at 52 million.

What is the purpose of Diamond Hill’s February 28, 2026 AUM disclosure?

The company provides a detailed snapshot of assets under management as of February 28, 2026. It breaks out totals by investment vehicle and by strategy, giving investors clarity on where client assets are allocated across Diamond Hill’s equity, fixed income, and securitized offerings.

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