** Shares of Diamond Hill Investment Group DHIL.O rise 43.7% to about $168.80 premarket
** Co says First Eagle Investments will buy it in an all-cash deal valued at ~$473 mln
** Adds DHIL shareholders will receive $175 in cash per share, a 48.9% premium to its last close, according to Reuters calculation
** DHIL says it may solicit alternative proposals until January 14, 2026
** As part of agreement, co will not pay quarterly dividends through closing - DHIL
** As of last close, shares down 21.8% YTD
(Reporting by Megavarshini G. Somasundaram in Bengaluru)
((Megavarshini.SomasundaramGnanasundari@thomsonreuters.com;))