Why Shopify Stock Was Down This Week

Week to date, shares of Shopify (SHOP -2.25%) were down 9.6% as of 10:20 a.m. ET on Friday, according to data provided by S&P Global Market Intelligence.The stock fell following the e-commerce company's fourth-quarter business update. Revenue grew 24% year over year in the quarter, but Wall Street investors didn't like the company's outlook for higher operating expenses, which implies lower margins than expected.Is Shopify stock a buy?The post-earnings dip could be a good buying opportunity, as the company' ...