Hedge fund BVF takes 6.1% stake in Affymax

Biotechnology Value Fund has accumulated 6.1 percent of Affymax Inc., the hedge fund said in a filing Friday with the Securities and Exchange Commission.
BVF, with offices in Chicago and San Francisco, said it controls 2.15 million shares of Palo Alto-based Affymax’s (NASDAQ: AFFY) roughly 35.5 million shares. BVF had not previously stated a position in the anemia drug developer.