You must establish an account connection to either a NinjaTrader provided connection, your broker or a data feed in order to receive market data and trade either live or in simulation. NinjaTrader comes with the following default installed connections:

• External Data Feed Connection
• Market Replay Connection
• Simulated Data Feed Connection

You must configure your own broker or data feed accounts using the Connection Wizard. Once a connection is created, you can establish a connection from the Control Center window File-->Connect menu.