Originally Posted by ;
You invaded this thread together with all the daring claim that one could exchange a random walk.
Extraordinary claims like this demand extraordinary proof.
Rather you come up with all the volatility pumping example that has nothing to do with trading random walks at all, it is about investing in a portfolio of stocks that are not random walks at all, and a faulty excel sheet that doesn't implement a random walk since it is now clear after analyzing it.
All discussions were already given in this thread. Simply scroll back and attempt to know them....