I'd like to think so, and there probably is, but the issue with Excel is not technical superiority but market dominance. If there were some tool that could be g

I'd like to think so, and there probably is, but the issue with Excel is not technical superiority but market dominance. If there were some tool that could be gracefully upgraded to harder and harder problems, but that was designed for this kind of thing, it would be ideal. Excel is a teetering mountain of compromises and (bad) hacks. I have messed around with using Arc for something like this (my initial plan: a way to keep track of stock positions, but to treat arbitrage positions as a unit -- instead of "100 shares of XYZ, and -100 shares of ABC, which are merging next week in a 1:1 share swap," it would be "1 unit of XYZ/ABC merger.")