If ShadowTrader is initiating a position at the market it simply means that limit orders are not being used and the position is being entered with no regard to price. This is used much more often on more liquid Nasdaq issues.
If ShadowTrader is initiating a position at the market it simply means that limit orders are not being used and the position is being entered with no regard to price. This is used much more often on more liquid Nasdaq issues.