Which is a bigger sign of a biotech bubble: NantKwest launching an initial public offering as the highest-value development-stage company to ever go public in the US or vTv Therapeutics raising more than $100m in an IPO to support another Alzheimer's drug candidate that was rejected by big pharma?
Bubble speculation continues in the US as biotech IPOs continue at eye-popping prices, but there still are many companies that...






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