A few outstanding people, not a monthly salary of tens of thousands, the boss has to treat you like a treasure. Traders in the London Whale Incident earned hundreds of millions of dollars for JPMorgan Chase every year before the incident broke out. So you know.
Nowadays, many traders are actually soliciting customers in disguise, saying that they are cultivating you, but actually letting you trade with money yourself. Don't lose money, it doesn't matter if you are profitable and give some salary training.