Diamond Hill Capital released its fourth-quarter 2025 investor letter, noting the Russell 1000 Value Index rose 3.8%. Information technology and communication services sectors led the rally with a return of 11% and 9%, respectively. The firm remains cautious of AI-driven market enthusiasm, emphasizing stable, high-quality businesses for investment opportunities. The Fund returned 1.41% in Q4, lagging the Index.

Labcorp Holdings Inc. (NYSE:LH) was highlighted as a leading performance detractor in Diamond Hill Large Cap Fund’s Q4 2025 investor letter. The laboratory services company saw a one-month return of 3.80% and a 9.58% gain over the past 52 weeks. On February 2, 2026, Labcorp Holdings Inc. stock closed at $270.29 per share with a market cap of $22.461 billion.

Despite Labcorp Holdings Inc. not being on the list of 30 Most Popular Stocks Among Hedge Funds, 47 hedge fund portfolios held the stock at the end of the third quarter. The company faced investor concerns over lower-than-expected guidance due to delays in acquisitions and weakness in its development pipeline. Diamond Hill Large Cap Fund maintains confidence in Labcorp’s competitive advantages in the diagnostic space.

Read more at Yahoo Finance: Investor Concerns Impacted Labcorp (LH) in Q4