The two companies were working together on DNA sequencing technology, but the pharmaceutical giant pulled out Tuesday.
Amgen, Celgene and Pharmacyclics see short interest drop recently.
There's mixed interest in biotech, biopharmaceutical and emerging pharma companies.
SunPower is initiated with an 'outperform,' and Deutsche Bank is downgraded to 'sell.'
Earnings issues linger in every sector and guidance disappoints.
Under Armour is upgraded to 'outperform,' and First Solar is downgraded to 'underperform.'
Speculators can buy a biotech stock while the more conservative should consider a biotech fund.
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