Trading outside the market hours used to be available only for institutional traders, not retail traders. It is extremely risky because of market volatility and illiquidity (i.e., you may want to buy or sell, but you are stuck because there are no buyers/sellers). However, if you want 24h trading, it all depends on your chosen market – for instance, stocks are traded only when the stock exchange is open, but forex (currencies) trade 24h per day, Monday to Friday. If you sign up with eToro, you can also trade commodities outside the exchange trading hours – including oil, gold, silver, natural gas, and others.