While underperforming recently, the maker of robotic medical systems shows strength during the fourth quarter.
Wednesday highlights quarterly results from Apple and another debt ceiling vote.
Research in Motion is upgraded to 'hold,' and Intel is downgraded to 'neutral.'
Intuitive Surgical is upgraded to 'buy,' and ConAgra is initiated with a 'buy.'
Agricultural plays and gun makers are performing exceptionally well right now.
Earnings concerns, a high valuation and increasing competition all suggest vulnerability.
Hospital stocks and Medicaid insurers saw big gains after the Supreme Court's ruling, while other health care stocks dropped.
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