As January goes, so goes the year. Let your winners ride, but cut your losers short. Sell in May, and then walk away. Theyre commonplaces familiar to every investment professional. Yet, until now, nobody has bothered to subject these old adages to scientific scrutiny. In this short, accessible investment guide, investing guru Sam Stovall proves that theres more than a little wisdom in those old saws. Drawing on nearly a 40 years worth of data, he provides easy-to-follow, step-by-step guidance on how to take full advantage of the sound investment strategies