Kroger shares tumblepublished at 16:36 British Summer Time 15 June 2017
US retailer Kroger, which with 2,792 outlets is the biggest supermarket by store count, is having a torid time on the stock market.
A profit warning sent the shares tumbling 12% in early trading, and Kroger also said pay talks with unions could be "challenging" as it seeks to cut costs.
It doesn't help investor sentiment that Lidl and Aldi have recently unveiled big expansion plans in the US.