MILWAUKEE, Dec. 11, 2025 /PRNewswire/ -- The Ademi Firm is investigating Diamond Hill (Nasdaq: DHIL) for possible breaches of fiduciary duty and other violations of law in its recently announced transaction with First Eagle Investments. Click here to learn how to join our investigation and obtain additional information or contact us at [email protected] or toll-free: 866-264-3995.  There is no cost or obligation to you. In the transaction, Diamond Hill shareholders will receive $175 per share in an all-cas ...