My question is, whenever I trade and make a profit is there always going to be someone who's made a loss or is this an odd way of thinking?
when you (seller) make profit, the other guy (buyer) doesn't always at loss
but this condition is only true if the
fresh buyer puts
fresh money adding up to capitalization
however that buyer will incur loss if he later sells at a lower price
in an uptrend price
(bullish market) there will be more
winners, higher cap ~ money inflow
but in a downtrend price
(bearish market) there will be
much more losers, lower cap ~ money outflow