On the stock exchange, the outcome depends on the behavior of a people-driven money supply. Therefore, it highly depends on such external factors as international politics, the state of large oil companies, the presence or absence of some products in a country, economic, financial crises, natural disasters, etc. There are no specific and clear rules here, but there are dependencies on the behavior of the value of securities on a very large number of criteria. The Forex exchange is dominated by the laws of supply and demand. On the contrary, casino game outcome may depend on your luck. And there are no guarantees that it is trustworthy.