It took me some time but I'm now making meaningful money from my trading systems. My past automated trading was done with small accounts with around 1000-3000 dollars. After building a few systems I'm now making much larger sums each day (in the 1000's) and its growing quite rapidly.
Soon (assuming performance remains the same) I'll be trading with accounts in the 6 figure range. All of my brokers are ECN/STP do I'm not worried about them trading against me (assuming that really happens) but at what point do you start to run into problems getting orders filled ? At what point do you say you have too much money in a single account and spread them out across brokers or accounts?
or are these concerns even really valid?