Even after one of Wall Street’s best investors, Warren Buffett bought up to 29% of Occidental Petroleum Co. NYSE: OXY, the stock has been downward and now trades at a new 52-week low. Has the Oracle of Omaha lost his touch? Bears could criticize his timing, but the reality is that the short term doesn’t matter for investors like Buffett, but rather the coming few quarters.Occidental Petroleum TodayOXYOccidental Petroleum$53.74 -0.89 (-1.63$53.60▼$71.18Dividend Yield1.64%P/E Ratio14.68Price T ...