Funding roundup: Alder, Avalanche, OvaScience, Stemline

Four biotechs -- Alder Biopharmaceuticals Inc. (NASDAQ:ALDR), Avalanche Biotechnologies Inc. (NASDAQ:AAVL), OvaScience Inc. (NASDAQ:OVAS) and Stemline Therapeutics Inc. (NASDAQ:STML) -- raised a total of $470.5 million in follow-on offerings on Thursday.

Migraine and autoimmune therapy developer Alder raised $177 million through the sale of 6 million shares at $29.50. Credit Suisse; Leerink; Wells Fargo; and Sanford C. Bernstein are underwriters.

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