How can you generate trading signals in MS Excel and then perform the backtesting in MS Excel and/or output/export the trading signals to another backtesting system for portfolio management level backtesting. In essence, the aim is to have Excel export the trade signals to another software that will create a portfolio (i.e. trade signals across various markets) and apply risk management rules and any other position management rules (exits, stops, etc) to the trade signals/portfolio and generate for you a final historical simulation. Can this be done? If so , how and with what software? Has any one done this? Finally, how can you FULLY AUTOMATE these trading signals. Ideally, I would want a way, where the trading signals are automatically converted to orders, sent to the exchanges and trade positions managed until exit. I would presume there should be some multiple level of redundacies and fail-safe mechanisms in this automation. Personally, I believe that systematic trading should by default (to ensure proper execution) be fully automated. I understand that IKOS, a hedge fund group in the UK has 100% or close to 100% automation of their systems. Thank you much.