$CN HEALTH TECH(01069.HK)$ I see a lot of people posting about various whatsapp groups.  Legitimate brokers / traders are NOT  using whatsapp (at least in the US) to provide stock recommendations. If they are - search for a different broker.  I would also not buy a stock on a recommendation from someone you never met before. Also keep in mind that generally speaking - stocks dont increase that much in one - two days with little news.  This was a classic pump & dump.   The stock was worthl...