Correction: An earlier version of this story misstated the month since the S&P 500 posted its best week. It was December 2014.
This story was updated to clarify Amazon's comments.
An earlier version misstated Webster's state. He is from Florida.
An earlier version misstated the day of Horn's appearance on Capitol Hill.
Rebif is manufactured by Merck KGaA.
Correction: An earlier version misstated the length of time since the previous record on weekly jobless claims. It was 42 years.
Passenger, commuter and freight rail carriers were given a six-year window to implement a safety system. The time frame was misstated in an earlier version of this article.
An earlier version misstated the name of Sterne Agee CRT
An earlier version misstated when Kullman became CEO. It was in 2009.
Correction: An earlier version of this story misstated the source of the earnings growth projections. It was S&P Capital IQ.