How Much Money Does Warren Buffett Have Invested in Occidental Petroleum?

Buffett's holding company, Berkshire Hathaway, is betting big on Occidental Petroleum stock.Warren Buffett isn't shy about making big bets. Within Berkshire Hathaway's portfolio of publicly traded stocks, just 10 positions comprise more than 90% of its invested capital. One of those positions is Occidental Petroleum (OXY -0.42%). Buffett and Berkshire are betting on this company in a far greater way than most investors realize.Buffett and Berkshire are confidentAccording to the most recent filings, Berkshir ...