Are you saying Blackrock just arbitrarily increases positions in certain companies by 70% with no real reason? I've noticed they increased their holding in another bio on my watch list also. However, even if they are just increasing positions in the Biotech sector, they could have held steady or pulled out of Aria altogether and invested in other Biotech companies.
I suspect they intend to make money and that their selections aren't random or with little thought. All IMHO.
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