Widespread biotech dumping going on today. No clear correlation with anything except ASCO wrapping up this week. INFI down big on no relevant news. SAC has large biotech exposure and fund withdrawals could affect their biotech holdings. SGEN also went down but has recovered. SAC owns INFI and SGEN. SAC does not own IMGN, unless it bought IMGN sometime early this quarter. It's going crazy out there.