Christopher Niehaus, a managing director of the investment banking arm at Jefferies International Limited at the time, boasted in one message about being able to pay off his mortgage if a deal with one of his clients went through.
In other messages, sent via the social media app to a close friend and to a colleague, Niehaus revealed the identity of clients, details about their mandate and the fees he would charge them.
One of the messages included information about a “massive mandate” from one client, who was a direct competitor with one of Niehaus’ Whatsapp friends at the time.
The FCA found that Mr Niehaus failed to act with due skill, care and diligence when he sent the messages between 24 January and 16 May 2016.
