Not surprisingly, shares of Whole Foods (WFMI) are adding to losses in today's pre-market session following a sharp earnings related sell-off after-hours yesterday. Historically, the stock tends to add to losses the next day following a drop in the after-hours following an earnings event.

The company reported Q2 sales of $1.86 bln, up from $1.46 bln a year ago and about in line with the Street view of $1.89 bln. EPS was $0.29 per share, vs. $0.33 per share last year. The Street was at $0.30 per share.

Looking forward, the company said it is maintaining its previously announced sales guidance for FY08.

The last time the company reported similar results compared to consensus estimates was back on November 2, 2006. That night, WFMI skidded 14.4% in night trade on Q4 earnings and guidance that were in-line with estimates. Shares sank further the next day, closing the regular session down a steep 23%.