It was the seventh best performer in the index during the first half of the year.
Inovio Pharmaceuticals, Neurocrine Biosciences and Alnylam Pharmaceuticals were among the biotech movers in premarket trading on Wednesday.
Ionis Pharmaceuticals, Alnylam Pharmaceuticals, Amicus Therapeutics and Minerva Neurosciences were among the biotech movers in premarket trading on Monday.
Also on the move were Global Blood Therapeutics, Valeant and Kite Pharma, among others.
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