I specialize in developing & trading my own automated trading systems. However, I am quite concerned about my R&D costs, and relatively low efficiency (in terms of number of "positive" systems I produce). I am in the process of switching from Ensign to NinjaTrader - quite close to completing that, actually. I finished coding & validating in backtesting the 2 systems I currently trade live (meaning, they backtest in Ninja to parity with Ensign), the next step is real-time validation of the Ninja version (probably using MarketReplay). Anyway, I am thinking there's got to be a better way to increase the number of strategies I am trading live, and I am thinking about exchanging strategies ... I think I would require the other trader to be the author/IP owner of the strategy exchanged, at least a few months of automated live trading with results matching backtest, of course an NDA (probably more than that) ... ... PM me if you are interested.