[hendzen]

You have to buy the feed, the market data isn’t free. Depending on your usage the fees can get fairly steep [0]. And that’s just the market data, you need to pay for colocation, cross connects, and order entry sessions. Of course Nasdaq is only one US equity market - there are 14+ with more coming online in recent years.

[0] - http://www.nasdaqtrader.com/Trader.aspx?id=DPUSdata

[speedgoose]

I need to create and operate a market place.

[optymizer]

This is great. Thanks for the info - it does look expensive. I might have to investigate other exchanges.