The S&P 500 just booked its best week since January. What's on this week's agenda? You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources , and more. Learn More The S&P 500 Index (INDEXSP: .INX) just booked its best week since January. The index, which comprises the 500 largest listed companies in America, soared 4.6% for the week to 5,525 points. Every sector lifted except consumer staples. Earlier this month, concerns over the...