IMM CHART / SP, page-185

'upgrade the price target though'
That's exactly where the problem is I think.
These guys put a upgraded price out there and make the public be aware of the great potential of IMM and then mess/mislead the whole thing by putting a 'disappoints' in the title. A lot of layman retails are already very confuse about whether to believe AIPAC results are good.
Then technically, when they manipulate the market, just have a look the daily short sell volume, from 10th Nov (the day we had the big drop started)-12th Nov, there were about 15mil+ short sell volume excuted and resulting about 7.5mil+ of remaining short position by 15th Nov. There were a lot of open/close cycles just within that few days.

Such volume or percentage of short is no where affecting the fundemental of the company and not gonna make any real harm to it, but the action is definitely out-weighted the daily trading volume of this stock. That's how lots of the inexperienced retails investors get stucked in this kind of play.