The SP is reaching a high note here. It is an attempt, in my judgement, to pump up financial assets, led by price manipulation and not any economic fundamentals or legitimate price discovery. It might go higher, but higher from here it looks like bubble territory, if we are not there already.
Overdue for a fairly stiff correction, but do not get in front of it for the sake of your portfolio. I would not underestimate the Fed's willingness to create a new bubble to attempt to counteract the effects of the last two. What else can they do given the hole into which they have dug themselves? It will take a serious financial reform and economic restructuring effort to correct this. Until then the looting continues. 
"Some people see God as they see a cow, and love Him as they love a cow — for the milk and cheese, and the profit it brings. This is how it is with people who love God for the sake of worldly possessions or inward comfort. They do not truly love God when they love Him for their own advantage. The eye through which I see God is the same eye through which God sees me; my eye and God's eye are one eye — one seeing, one knowing, one love.”
Meister Eckhart, Predigten und Traktate