Answer:
overconfidence
Step-by-step explanation:
Since in the question it is mentioned that the Juwan who early opened an online trading account and he believed that his market savy would permit him to pick up the stocks so that he could become richer trader
But this represents that he is overconfidence as he believe himself more than his judgments i.e. not appropriate as the overconfidence destroy the things
Therefore the same is to be considered