IMPORTANT!: Neopets is currently making changes to premium and as a result no sign-ups are currently avaliable. This means that if you do not already have premium, you must wait until sign-ups open again to join.
Neopets Premium is the paid service of neopets. If you pay for neopets you will be able to get extra features on the site. This page will give you an overview of these features, so you can make a solid decision of wether this service would be worth paying for to you.
If you're interested in the real life stock market you are able to put a module on your portal that shows information about the stock exchange, for instance nasdaq and dow jones index. You're also able to see the featured stock of the day, and read business news. If all of this doesn't interest you at all, just remove the module from your portal.