Short interest in Union Pacific Corp (NYSE:UNP) decreased during the last reporting period, falling from 28.11M to 27.86M. This put 4.7% of the company's publicly available shares short.

Based on the recent average volume of 3.27M shares traded per day, it would take 8.51 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.