This is the distribution of trading points for Alpha users, note that it refers to trading points and not account balances. The 16-point tier accounts for over 45%, with more than 100,000 people. This means that the majority of users are focusing on the 16-point tier, which corresponds to a trading volume of 65,536. The minimum daily loss for this tier is around 3.6 U, not including transaction fees, and there are even 13% of users at the 17-point tier still participating, it's very competitive.