Why Puma Biotechnology, Inc. Stock Soared 65.1% in July

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What: Shares of Puma Biotechnology, Inc. (NYSE: PBYI)a clinical-stage biopharmaceutical company developing a cancer therapy, shot up 65.1% in July, according to data from S&P Global Market Intelligence


So what:Herceptin fromRocheis an additional therapy typically given to breast cancer (and some stomach cancer) patients with tumors that over-express HER2 after initial standard treatment in order to destroy any remaining cancer cells. In industry jargon, we call this the "adjuvant setting," and it's quite lucrative. First approved by the FDA in 1998,Roche's Herceptin is still growing revenue, and it finished the first half on pace to pass $7 billion in sales this year.

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