Whole Food (WFM) shares are down nearly 30% in the last year. There’s several reasons for the drop including increased competition from grocers and big box stores adding to their organic and healthier offerings. But, Sentieo co-founder and CEO Alap Shah recently used his company’s data platform to find another reason behind the drop. Check out the interview to find out this other reason and how he was able to estimate the impact on Whole Foods’ sales.