Warren Buffett acquired 28.7M DaVita shares worth $5.19B. That's 1.42% of their equity portfolio (13th largest holding). The investor owns 44.70% of the outstanding DaVita stock. Warren Buffett started to build up the position in DaVita in Q4 2011 and continued to invest until Q4 2014. Since then they sold 9.87M shares. The stake costed the investor $1.53B, netting the investor a gain of 238% so far.