For $15, I think this program has been a reasonably good buy. It will track your stocks, create charts, allow multiple portfolios, and even track currencies (nifty!). However, it could be <i>even better</i> if users could:
1) add their individual stocks' dividends (as a preference even)
2) add a note column (e.g., to remind yourself what the company's core business is)
3) incrementally add share buys (instead of having to recalculate the whole cost-basis following the 20 more shares you just bought)
Basically I want the Palm OS program StockManager on the Mac ;-)
iStock
track favorite stocks, personal portfolios and currencies
Version: 1.5.3