Good Morning RedDuke, What is your personal definition of positive expectancy for an algo trading system? For example, in your opinion, is your positive expectancy considered profit factor greater than 1.5?
If you have multiple 1-sharpe strategies (with true statistical significance yada yada yada) that are uncorrelated, you can easily be running at Sharpe higher than 2. Even a collection of Sharpe 0.75 strategies that are not correlated to the market, have a T-stat above 3, are based on an actual market hypothesis and were still working in the recent past would do this for you. I am with RedDuke on this one.-It's hard to find a strategy that is not curve-fit, that's why MLDP dedicated half of his book to preventing curve fitting of various forms. If you have found one, it might have obvious execution issues (e.g. pnl/tradevalue is too low or slippage is too high). This business is HARD.
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