Fund companies raise funds to invest in various securities including stocks, futures and bonds instead of customers.

Futures are forward contracts (not spot contracts) of commodities, including agricultural products, industrial raw materials, financial securities and even future weather forecasts.

Because people keep buying and selling, the prices of stocks and futures change every second, so people speculate in stocks and futures.

Stock speculation can only be bought at a low price and sold at a high price, but there are dividends and rights issues.

Speculation futures can be bought at a low price and then sold at a high price, or sold at a high price and then bought at a low price. Futures contracts are high-risk margin transactions.