According to the ETF Finder at ETF Channel, MRK makes up 8.70% of the Health Care Select Sector SPDR Fund ETF ( AMEX: XLV )which is trading higher by about 0.4% on the day Friday.
The decision to get out of the primary care market is a major reason Bristol signed up Merck (nyse: MRK - news - people ) as a partner for muraglitazar, a diabetes drug that also treats heart disease.
Marketocracy's gurus showed exceptional bravery in their fourth-largest buy last week, scooping up shares of Merck (nyse: MRK - news - people ), which announced on Thursday that it was pulling its painkiller Vioxx off of the market due to safety concerns.