Take a look at some of Monday's midday movers:
Apple hit a fresh 52-week low.
Radian Group traded at a 52-week high after the company was upgraded to "outperform" from "market perform" at Keefe, Bruyette & Woods with a price target of $12.
Intuitive Surgical added to last week's losses following a report about an investigation into its da Vinci robot. The medical device maker was the worst performer on the Nasdaq 100 index.
Caterpillar was the worst performer on the Dow on concerns about growth in China.
—By CNBC's Lori Spechler
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As the Fed meets and earnings news rains down, the big question in the week ahead is whether the S&P 500 can manage a break out.
March's disappointing durable goods report dimmed the prospect for a big second quarter bounce.
The S&P 500 is bucking against its all-time high, and JP Morgan technical analysts expect the rally to continue in the weeks ahead.
Names on the move ahead of the open.
Patti Domm is CNBC Executive Editor, News, responsible for news coverage of the markets and economy.
A CNBC reporter since 1990, Bob Pisani covers Wall Street from the floor of the New York Stock Exchange.
Senior Producer at CNBC's Breaking News Desk.
Dominic Chu is a markets reporter for CNBC.