making money by stock investment

A young investor got more than 500,000,000 yen by selling the stocks of J-COM.
I'm envious. If I had money I could do the same.

First of all, I have to work hard and make enough money to invest.
And I need to study economy.

Once I challenged "weekly trade" but it was easy to lose money.

After I wrote this, there were much bigger surprise.
Other young investor got about 2,000,000,000 yen by selling J-COM.
Unbelievable!