Based on some of these questions, Brexit volatility and the fact the contest is starting on a Friday, my bet is 50% of the competitors will have a $0 balance come Monday.
I don't think there will be more than 30% of traders with a loss of 90 - 99% of equity by Monday.
The majority of participants will not trade at all and stay at 100% original 'deposit' until the end on Jul. 31th.
Some managed to lose it all after a few hours of activity...... with strange trading methods.
Complexity is expensive, inefficient, and ineffective > Crocodile trading