This all depends on how agressive you want to be. You can play one stock but you have to hedge your bets and watch it like a hawk as everything can turn on you in 5 seconds. If you set min and max levels to cut your losses if you happen to be using a real time software system. You'll have more volatility with lower priced stocks since volumes will change but it also means you can get 20% gains in a day. If you're looking for stability spread it out across different industries. We're going into the holiday season so it's not going to be as active....but depending on how the election turns out.....you can post large gains or losses tomorrow
Can you go into the commodities markets?