NASDAQ just released one of the slickest stock market apps for the BlackBerry PlayBook. The app gives you access to tons of information from the NASDAQ exchange. Sadly it is limited to NASDAQ only for obvious reasons but we can hope. On the other hand the app is the slickest real time stock portfolio app I have seen for the PlayBook so far. It gives you free access to unlimited real time quotes, pre-market and after hours activity, charting, and an exclusive custom heat map.