Snap Stock Soars in Market DebutSnap Inc"s shares tumbled 12 per cent on Tuesday and traders raced to position themselves to cash in on further declines after analysts gave the company a lukewarm reception following its red-hot market debut.Snap"s US$3.4 billion public listing on Thursday was the hottest technology offering in three years, but its lofty valuation and slowing user growth have raised eyebrows on Wall Street...