QCOR: BLACKROCK and VANGAURD bought shares represents more than 5%... BlackRock Bought:4,775,604 shares represents : 7.61% of total holdings. Vangaurd bought addtional: 76,335 shares, now there total holdings are 3,337,563 shares http://www.nasdaq.com/symbol/qcor/sec-filings Two possiblities next two weeks: 1. relatively small sell off (bad news already factored in) 2. Extreme short squeeze driving stock up.