Looking for a stock that has been consistently beating earnings estimates and might be well positioned to keep the streak alive in its next quarterly report? Union Pacific (UNP) , which belongs to the Zacks Transportation - Rail industry, could be a great candidate to consider.This railroad has seen a nice streak of beating earnings estimates, especially when looking at the previous two reports. The average surprise for the last two quarters was 4.15%.For the last reported quarter, Union Pacific came out wi ...