Walmart shares fall 10% as online sales slowWalmart shares suffered their biggest percentage fall for more than three decades on Tuesday after reporting disappointing online sales figures for the Christmas period. Online sales were 23% higher in the three months to December. The retailer said its online revenues totalled $11.5bn last year, but it lost money on those sales. While sales at Walmart's US stores rose by a better than expected 2.6% in the fourth quarter, net profit sank 42% to $2.2bn (£1.6bn). Asda, Walmart's UK supermarket, reported a 0.5% rise in like-for-like sales - its third consecutive quarter of sales growth.