Originally Posted by
nickola.pazderic
I have the answer to volatility and HFT: don't watch the screen!
Once again I can naively report that my grandpa account at Vanguard is completely out performing Thinkorswim and all its pyrotechnics.
Entry points on TZA? Without lights blinking, I just enter the order and quietly and calmly it is filled.
But the question about sample size remains. I wish I could backtest this, but like many things in life I/we are out there alone at the point of making an order...