By Louis Navellier of Investor PlaceNEW YORK ( TheStreet) -- After a bumpy patch in early February, the market has gotten back on track thanks to strong corporate earnings. The bull market that lifted all of Wall Street in late 2009 is still running strong. However, we are at last starting to see a rotation away from "junk stocks" into higher-quality stocks. Not all companies will succeed in this environment, but the ones that do will be richly rewarded. In the long run, this is actually great news for Wall Street even if it causes some short-term volatility. The focus on quality and the rotation out of bad stocks now means investors are concerned with what really matters -- real numbers -- and not just investment fads or tricks of the market. Companies with strong sales and earnings are flying high, and those that don't have good earnings are falling away.