OBV bullish since 9/21 - they have been accumulating as they can, but instys only added a few percentage points third quarter so I think they were having trouble getting shares. In fact, if you look at the volume it's likely that a lot of them were acquired prior to and on the Biogen announcement at the end of summer, and they had to jump for them.
It's interesting that the only negative ADX period while the stock was trading in the $3.30 range in October and during the first part of the walk down in late October. That was all about grabbing shares .
As you can see, volume today wasn't nearly as large as the pre-Biogen push and the Biogen news.
I like the upward oscillation of the FTR.
If MM's lose control over $4.50 I think you'll see the Instys sucking up everything they can below $8. They may try to hold the stock in a trading range $3.50 -$4 till after the holiday.