I no longer suggest playing the Stock Market, unless you are already rich. Neopets changed the rules saying too many people bought at 6 and sold at 7-8 neopoints a share. They only get this information because that is how more experienced people tell newbies to get rich. Once you become established with your neopoints and used to how the Market works you told out for them to hit 10 or higher. Infact, the only time I ever sell at 8 is when I've bought 5 days worth of shares and have watch for two weeks as it goes bounces from 6 to 7 and back to 6.
You know the that Adam and Donna don't even actually play Neopets enough to make their own neopoints, they just pull them from thin air. They don't know how hard it can be to become rich so they shouldn't be making rules saying 'This is too easy so we are making it hard.' I can agree with a few of their reasonable rules, but so many are just ridiculous.