FDA decision can come any day well before 1/15, that's just the deadline -- shorts can get caught any day
Just like what happened with ARIA when the decision came in very unexpectedly. When FDA feels pressure from citizen groups or supportive physicians etc. (AMRN has both on its petitions) it can especially help.
And Zachs' research report emphasizes that Amarin is "pulling out all the stops" to get approval.
Even with current level of sales IF the FDA didn't reverse decision, sales still merit a much higher price.