1. Edge Financial Technologies had many clients. This was one small client at the time.

3. Sarao, the trader, is a witness against Jitesh and is part of his plea deal.

2. Which other platforms is this legal?

Answer: Adding quantity to an order is legal on most stock markets, and derivatives markets around the world.

Adding to your order is a perfectly legitimate transaction. Think of it as "Just before the price rises, I want to buy all I can." or the opposite "Just before the price falls, I want to sell all I can."