This post is specifically for equity traders, utilizing backtesting/paper trading as a decision to go live or not on a new model. My prefered performance indicator is cents per share. I have back tests that yield about 3c/share (Gross- not including slip and comm) with little optimizing. The paper trade results are more or less in line with backtested results. I did go live but, there isnt enough significant days to draw any conclusions. But I am starting to suspect that 3c/share is not adequate. Slippage and commission combined I suspected would be in the range of 1 cents/share, leaving only 2cents/share net for me. Although the small sample size of live trades have out performed backtest and paper trades, my true slippage for this model was more in the line of 2cents/share, this model happens to be an aggressive fill strategy that needs to take liquidity therefore the slippage is higher than I first though. This leave me with about .5cents/share after commissions. Dont get me wrong, I'd take .5 cents/share all day everyday, However I feel as though I am not aiming high enough, as some pro traders on this site are routinely getting ACTUAL results of 3c/share (Lescor), while I only set my backtest to yield 3c/share... I cant possibly expect to outperform my paper and backtests, If I want realized gains of 3c/share I probably have to push my tests and paper trades up to 5c/share. Any thoughts would be appreciated.