Report: Online sales jump 22.4% on Christmas Day

New York City -- Online sales rose 22.4% on Christmas Day, according to IBM Digital Analytics Benchmark, which tracks more than 1 million e-commerce transactions a day from 500 U.S. retailers.

The increase was higher than the 16.4% increase in 2011, and provided one bright spot in what has proven so far to be a lackluster holiday shopping season.