Mobile and eCommerce shopping hit new highs this holiday season as Cyber Monday yet again beat its own record as the largest online shopping day in the U.S. with over $9.4 billion in eCommerce retail sales. This followed a record day for Black Friday which reached $7.4 billion in online sales while U.S. eCommerce volume on each day grew by nearly 20 percent year-over-year. One channel’s gain is another’s loss, however, as total holiday sales had a much more modest 3.4 percent growth. Department stores saw total holiday retail sales fall nearly two percent, despite growth of 7 percent in online sales. The biggest winner was mobile holiday sales, which increased 55 percent on CyberMonday year-over-year.