Warren Buffett's Berkshire Checks into DaVita Healthcare for Gains

DaVita Healthcare Partners is on a roll, and the stock is chasing an all-time high. Shares are up 18 percent this year, as the dialysis provider has made solid gains and as more Baby Boomers look to it for care. That's good news for Berkshire Hathaway, which increased its position in the company earlier this month. In fact, it is also the only healthcare position in the Oracle of Omaha's portfolio. Where DaVita isn't growing through organic development, it's growing via M&A -- the company has done deals in new markets, ranging from Malaysia to Colorado, as it looks to boost market share.