DaVita’s stock leads S&P 500 decliners after Berkshire pares stake. Its soft guidance isn’t helping. - MarketWatch

1. DaVita's stock dropped 13.5% after Berkshire Hathaway reduced its stake. 2. Berkshire now holds a 45% stake, worth $5.6 billion. 3. Fourth-quarter earnings beat estimates, but guidance is below consensus. 4. The company faces significant costs from closing outpatient clinics. 5. DaVita claims $24.2 million in closure charges for the last quarter.