This question has sat for a while, hasn't it? I converted from Money to GnuCash a few years back, and am very happy with it, though I don't do a lot of investment tracking (just a few funds and a few stocks). I don't find it as easy to use to enter transactions, a bit more fiddly than Money was, but it does everything I've needed. It is supposed to be possible to set it up to import share prices, though I haven't even tried that. The current version of the manual can be downloaded as a PDF file from the website, and here's a direct link to the Investments chapter: http://www.gnucash.org/docs/v2.4/C/gnucash-guide/chapter_invest.html