Union Pacific (UNP) Down 2.7% in the Past 3 Months: Here’s Why Posted byZacks Equity Research October 7, 2021 Leave a comment on Union Pacific (UNP) Down 2.7% in the Past 3 Months: Here’s Why Delta-mutant induced weak volumes are likely to have ailed Union Pacific’s (UNP) third-quarter 2021 performance.