Diamond Hill Capital, an investment management company, released its “Mid Strategy” fourth-quarter 2025 investor letter. A copy of the letter can be downloaded here. The fourth quarter posted another period of favorable gains for equity markets, with small and large cap positions being stronger performers, returning 2.19% and 2.41%. While the mid-cap range was a relative laggard, with the Russell Mid Cap Index returning 0.16%. The Strategy returned 3.65% (net) in Q4, compared to 0.16% return for the Russell ...