Dendreon (DNDN) finished the day down $9.74 to $11.81. The stock was halted midday as data were released at an AUA meeting today. The NASDAQ was also investigating two minutes of trading in DNDN that might have included some brokerage errors between 1:25 and $1:27–Bloomberg. However, no errors were found. Was the midday sell-off warranted?

Update. Shares surge 123 Percent in After Hours. Link to story.