I think $10-15 is achievable without BRAVE (with lots of things going right).
But if BRAVE is very positive, then $20 would literally be the floor. I realize they probably can't get an indication out of the BRAVE study, but the mere fact that a study of that length and complexity (ie. spinal taps, etc.) showed positive results vs. ALZ would be enormous.
If it is only *mildly* positive, then I am not sure how much impact it will have. I think it needs to show some real significance.