[…] Snap was up 4.2%, leading the group to a positive return for the last few trading days. But the name was down 81.4% by the end of the year, buffeted by concerns over the fact that during past earnings calls, management noted that advertising partners across many of the company’s key verticals are pulling back on their own advertising and marketing spend. Zoom gathered 2.8% but lost 64.4% as there’s been a slowdown in the company’s online business. …