Quote from zf trader:
I remember back in my university day some prof say "but remember futures are a zero sum game, for every winner there is a loser"
Lets consider a farmer who has wants to grow grain. To buy seed and fertilizer he has to borrow money from the bank. In order to get that loan the bank manager set out the condition that the wheat must be sold for $3.50 a bushel.
So the farmer tells his broker to sell the August future at $3.50. Next thing you know he is filled, gets the loan and grow a good crop. That year the farmer makes $80,000 for his family.
On the other side of the trade I bought wheat at $3.50 on a seasonal trend trade. Two days later I sell at $3.75 on the volatility of a USDA report making $1250.
By my math total profit from the trade is $81,250
To say that trading is a zero sum game is dead wrong.