NSE cautions brokers and investors against unsolicited messages Leading stock exchange NSE has cautioned traders and investors against unsolicited messages being circulated by unregistered entities to induce investment and sale of shares.Earlier, BSE had also issued similar message to investors. The direction comes after the bourses and capital markets regulator Securities and Exchange Board of India (Sebi) noticed that "unsolicited messages are being sent to induce investment or sale of the stock of certain listed companies, indicating target prices by unregistered or unauthorised entities". "Trading members are requested to advise their clients to remain cautious on such unsolicited messages being circulated by unregistered or unauthorised entities," National Stock Exchange (NSE) said in a notice The exchange also said that in case the trading member "suspects that there is an unusual trading pattern" by any client then it should release the payo