Tuesday’s December retail sales numbers sent a sigh of relief through markets that were worried about soft sales at retailers over the holiday season.

There are fresh reasons for worry after Best Buy released terrible sales numbers with same-store sales down 0.9% y/y versus the +0.7% estimate from Retail Metrics. Shares of the electronics retailing giant are down nearly 31% in the pre-market.

Update: Now trading down 29.3% after the open.

BBY US equity