Warren Buffett's company has continued to add to its stake in kidney dialysis firm DaVita Inc. throughout October, and Berkshire Hathaway Inc. now controls more than 11 percent of the stock.
Berkshire filed documents with the Securities and Exchange Commission on Friday showing that it owned 10.8 million DaVita shares.
That's up from the 10.2 million shares Berkshire reported owning at the beginning of October. DaVita runs nearly 2,000 outpatient dialysis clinics.
Buffett's company has been increasing its investment in DaVita regularly since it first disclosed owning 2.7 million shares at the end of last year.
Berkshire's regulatory filings don't say whether Buffett himself or one of his company's two other investment managers made the DaVita investment. Berkshire officials don't typically comment on these filings.
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