Citigroup (NYSE: C) stock closed 6.93% lower on Friday after its fourth-quarter revenues missed the Street’s estimate. The bank’s 4Q revenues of $16.5 billion declined 10% year-on-year and came in below analysts’ expectations of $16.7 billion. The banking giant’s weak top-line performance reflects a 14% decrease in its Global Consumer Banking division. The bank said that the lower interest rates and decline in card volumes weighed on the segment’s revenues. The bank also announced that it could resume share buybacks in the current quarter. The average analyst price target of $74.93 implies upside potential of about 16.7% to current levels.