Nikkei225 felled, well. I shorted on July 17th, this year, and I got about 3000 yen. 1 contract is 1000mults, so 3000 yen is 3000000 yen, profit per contract. An usual Japanese broker permit a trader to make a position, at the largest, 100 contracts, based on SPAN.

So, if I made 100 contracts this time, I will make 300000000 yen this time, i. e. 300 M yen. Really? It depends on your imagination or speculation.