https://www.reuters.com/article/us-shopify-citron/short-seller-citron-says-likely-to-publish-more-on-shopify-idUSKBN1CG2ET >Short-seller Andrew Left of Citron Research said on Wednesday that he is investigating various aspects of software company Shopify Inc's business and will "most likely" publish a follow-up to the Oct. 4 report that sent its shares plunging.