How can you invest US$100 or less in a stock easily online?

• Only through Sharebuilder .... However, rates profits are eaten as a small living position.

• Does not make much sense to invest less than $ 400 500 at a time, the sales commission to buy and sell later eat a lot or all of their benefit.

• That an open process Realfasttrader.com row I think you only need $ 100 to trade in their software online and the fee is only $ 0.39 per 100 shares, so they are a good option if you are concerned by the commission to feed the potential benefits.