Avid Bioservices Inc (CDMO)

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Biotech stocks were among biggest losers on Monday as investors begin to digest news coming out of closely watched annual American Society of Clinical Oncology (ASCO) meeting, the year’s biggest cancer research meeting. Over the weekend thousands of oncologists, investors, researchers and analysts descended on Chicago and here are some of the biggest takeaways from discussions over the weekend.

The Russell 2000 Index of smaller companies tumbled 0.9 percent, while the Dow Jones Internet Composite Index lost 1 percent.

Array Biopharma Inc (NASDAQ:ARRY), Cytokinetics, Inc. (NASDAQ:CYTK), Progenics Pharmaceuticals, Inc. (NASDAQ:PGNX), Celldex Therapeutics, Inc. (NASDAQ:CLDX) and Aastrom Biosciences Inc (NASDAQ:ASTM) all were down at-least 4%, as of this writing.