After an forward guidance or earnings blow-up and a major re-pricing of a stock, it is usually best to wait at least three days before trying to take the other side of the trade. You are talking about some heavy institutional adjustments taking place, amounting to stepping in front of a freight train.
Regarding a specific level to become an interested dip-buyer, observing the monthly chart of ISRG, below, I would view the $350-$370 area as first major support. I know that seems a bit far off from current price, but momentum is clearly to the downside at this point and it may push lower yet. At a minimum, the major monthly trend since 2009 has been breached (light blue line) and the other side of the mountain may very well be upon us.
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Some of the little ones(biotech), those 2012 poppers, are in motion today..
eg) AEZS
I am positioned long adding back share full position on 29th of June
cost avg @ 1.82
well now sh!t..!!
😉
many working in the sector except..
This one did have a nice pop over 2..and and and..
I did not take profit.
remain long and patient.
(they are playing this one, volatile moves, for pennies..
I had added to many of my old biotech hand grenades,as referred to, on their most recent correction(did not post entry/risk). Some have already began their move off the dip. It’s been a great sector for me, particularly going into and most of 2012, whether spec or not.
Keep an eye on disco duck too..
and that 2013 stock pick of the year.
Congrats on all your wins as of late..
~Cheers to you, Chess!