Quote from newbunch:
It's still in Excel. Why should I convert to other software when I already have it working in Excel? Also, I use fundamental data which some software doesn't support or makes it more difficult to do. If it was only price data (a technical analysis system), I probably would use something else since it would be so much easier. But with fundamental data, there'd be manual work to do either way.
Additionally, it's an end-of-week system with about 50 years of backtesting. Another thing that isn't too common with off the shelf software.
I am actually thinking about getting some software merely to help with idea development and testing, but continuing to use Excel. Any suggestions about which to try out?
I use Interactive Brokers and trade straight through their API and Excel spreadsheet. I have 3 spreadsheets: IB's TWSDde.xls, my system, and a portfolio spreadsheet keeping track of my account (actually, I have four of these spreadsheets for 4 accounts I trade).