It has to pull back soon.
Let’s take a look at the Daily chart of REGN (Regeneron Phamaceuticals):
This stock started out in January 2012 under $60 – and is now above $90. The volume has been a bit higher than average, but a better than 50% move? At some point, and it should be soon in my opinion, folks will want to take some profit. This would only be natural, book some gains.
Then there is the 100 Roll thing …