There are almost 6,000 stocks listed on the NYSE. Another 3,500 on the Nasdaq. Thousands more in the smaller OTC market. Your job: Winnow from those numbers a handful of high-quality issues in attractive chart positions. But how many, exactly? If I have a $25,000 trading account, should I be jumping into 10 or 12 stocks, or two? What if I have a $2.5 million account?