Regeneron Pharmaceuticals - The biotech and rivals including Biogen Idec and Amgen rose.
BP - The oil giant dropped after the Supreme Court rejected its challenge to the Gulf of Mexico oil-spill agreement.
ConocoPhillips - The energy producer declined after saying its 2015 capital budget would fall 20 percent from 2014.
Exxon Mobil - The oil company and others including Chevron, Anadarko Petroleum and Hess fell with oil prices.
American Airlines Group - The carrier edged lower after reducing its forecast for fourth-quarter consolidated passenger revenue per available seat mile.
J.C. Penney - The retailer continued its fall. It's down about 20 percent since Black Friday.
ClubCorp Holding - The operator of golf courses and country clubs dropped after saying said it would not convert into a REIT at the present time.
Digital River - The company declined after giving Microsoft an extension to decide whether to extend their distribution agreement.
Dover - The industrial-equipment maker declined after lowered its guidance for the year.
Pioneer Natural Resources - The company moved lower. It was downgraded the by TheStreet.com to hold from buy.
Vail Resorts - The operator of ski resorts fell after reporting a first-quarter loss.
(See CNBC's Market Insider Blog)
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