Price Movement After Resistance Is Broken

MR provides a good example of how when a strong resistance is broken it takes a quick leap ahead. $40 has been a strong resistance for MR and it took many attempts before it could break it convincingly. Now $40 should hold as a support. I am currently short MR with an average of $40.50 because i think at current levels it looks overbought and due for a healthy pull-back.