Prior to today's trading, shares of the oil and gas exploration and production company had lost 4.29% over the past month. This has was narrower than the Oils-Energy sector's loss of 10.92% and lagged the S&P 500's gain of 0.1% in that time. Any recent changes to analyst estimates for Occidental Petroleum should also be noted by investors. These revisions help to show the ever-changing nature of near-term business trends. As a result, upbeat changes in estimates indicate analysts' favorable outlook on the c ...