GRMN and ISRG
GRMN wasn't bizarre as it was unfortunate for those that bought yesterday's pullback and added to their position for longer term holds. The folks that lost on GRMN were not traders that capitalized on today's unfortunate demise, but the investors in GRMN that hoped for their stock to do well after losing for 2 straight sessions and thinking maybe GRMN would recover and were prematurely cheering at the premarket move up 10 points. They are the ones that did not short, buy puts or otherwise profit from today's downdraft which turned out to be a trader's delight. So much the shame that the conference call came just at 11:00 when they thought GRMN might bounce back. In my novice opinion I think this was the highest order of manipulation. If this were not enough, GRMN was downgraded to sell yesterday by some brokerage.
ISRG was more traders who were waiting to pounce on an overpriced company. ISRG investors were taking profits and waiting to buy back at a lower price (although they didn't expect it that low) I had ISRG for years until recently myself.
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