Health care is in the index's top spot for first time since 1988 and looks to remain strong.
Despite trading near its 52-week high, the stock appears to have plenty left.
Some major branded drugs will lose patent protection, and market share along with it, this year.
Eli Lilly, Sanofi and a lesser-known company could be in play.
This biotech behemoth's appeal is its combined value-and-growth stock characteristics.
The month also features a big gathering of biotech CEOs in New York and a cancer research meeting in Florida.
Stocks are mixed despite a consumer confidence reading that plunged to its lowest level in more than a year.
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