Mike...
FYI,,, you can short BB in the US...... you dont have to be an MM... you can be in the US...so please dont post none truths.. if you dont know ... dont say.. I posted links on this before... u can trade after hours,,, you can short ( if shares aviable)... but you pay fee...
also 90% of the volume...... if you look @ the trades & you watched what happend.. it would not make sense unless someone was buying back shorted shares... on that date 300,000 shares went off 1st trade above the ask ...