Quest Diagnostics (DGX) is Davis Opportunity Fund’s Largest Position Davis Funds, an investment management firm, published its “Davis Opportunity Fund” fourth quarter 2020 investor letter – a copy of which can be downloaded here. A return of 7.43% was recorded by the fund’s Class A shares for the year end of 2020, below its S&P 500 benchmark that delivered an 18.40% gains in the same period. You can view the fund’s top 5 holdings to have a peek at their top bets for 2021. Davis Opportunity Fund, in their Q4 2020 investor letter, mentioned Quest Diagnostics Incorporated (NYSE: DGX) and shared their insights on the company. Quest Diagnostics Incorporated is a Secaucus, New Jersey-based diagnostic information services provider that currently has a $17.2 market capitalization. Since the beginning of the year, DGX delivered a 7.85% return, extending its 12-month gains to 46.32%. As of April 06, 2021, the stock closed at $128.31 per share.