The Foreign Exchange Market. Forget Wall Street, NASDAQ, and the New York Stock Exchange and listen to this...The Foreign Exchange Market, or Forex, or FX as the "informed" call it has a daily average turnover of 1.9 Trilion US dollars. Yes, Trillions!
So what is this market you may ask? It is runs off of the simultaneous buying of one currency and selling of another and runs 24 hours a day. No stopping. This means that if you invest in Forex you can watch economies rise and fall every second of the day and buy and sell to your heart's (or bank account's) content.
And if Forex isn't your thing they also specialize in Futures and options. I don't particularly know a lot about Futures and to me Forex sounds like the most exciting...
Disclaimer (if you couldn't figure this out on your own, maybe you shouldn't invest yet): There is risk of loss trading Futures, options and forex.