https://www.reuters.com/article/us-citron-stake-lyft/lyfts-shares-rise-after-citron-advises-against-shorting-stock-idUSKCN1RH1WP >Shares of ride-hailing company Lyft Inc rose as much as 4 percent on Friday, setting the stock for its best day since its market debut last week, after short-seller Citron Research advised investors to hold on to the stock.