Out of curiosity ONLY, how many lots could a trader take without influencing the market on NQ? Is there a standard formula that some of the more successful big traders use? I read in another forum not to go over 1% of the trading volume.

Using Ninja the most you will be able to put on is 50, the book is thin and fast on NQ so you could easily get 100-200 lots on within a 4-tick range.