Berkshire Hathaway purchased nearly eight million shares of Occidental Petroleum in recent days, bringing its stake to 208 million shares, or 23% of the big energy company, according to a regulatory filing late Wednesday.

Berkshire Hathaway (Ticker BRK.A, BRK.A) bought the shares from Monday through Wednesday at prices ranging from $56 to $61 a share. Occidental Petroleum (OXY) stock fell 5.6% Wednesday to $56.80 because of a drop of more than $3 a barrel in oil prices to under $68 a barrel as measured by West Texas Intermediate.

Source: finance.yahoo.com