We just had a little XMG bittrex pump.

Can someone explain to me how this can help to earn money?
I don't understand, it seems that he invested between 10 and 15 BTC and got less than 10 back.
(It can be that he is a real MAGI lover.

)
When you make a long pump, hoping people get in, etc, etc I understand.
But such a short pump?