Occidental Petroleum Corporation (NYSE: OXY ) is building again a strong bull case despite recent weakness. Since my last coverage in October, shares are down about 15%, weighed by softer WTI prices, broad energy sector underperformance, and investor concerns over valuation premiums. YetHi, I'm Yiannis. Spotting winners before they break out is what I do best.Experience: Previously worked at Deloitte and KPMG in external/internal auditing and consulting. Education: Chartered Certified Accountant, Fellow Mem ...