a jp morgan survey of top us food retailers showed that walmart inc wmt increased prices the most in the latest quarter to august versus the previous quarter well above the increase of the average basket analyst ken goldman said that quarteroverquarter walmart raised food prices by 55 while prices at target corp tgt rose 46 at kroger co kr increased 44 at albertsons companies inc aci rose 29 and at sprouts farmers market inc sfm ticked up 05 meanwhile the average price of measured comparable baskets rose 36 walmarts stock which fell 04 in afternoon trading has gained 30 over the past three months while the dow jones industrial average djia has slipped 44