Are you serious? With analysis this rigorous you should be a member of management at BSX. Did you actual look at the numbers?
On 12/1/2008, the opening stock price was 5.98. On 12/31/2008, the stock closed at 7.74. Does that mean you're a buyer?
On 12/3/2007, the opening stock price was 12.53. On 12/31/2007, the stock closed at 11.63. Guess that means you’re a seller?
If you seriously believe in that model then May, June, and September - November have had 3 negative months compared to 1 positive since 2006. April's had 4 positives to 0 negatives. If you shorted the bad and bought the good then you would have averaged a profit of $17.5 a share…. Of course that’s stupid because you're assuming a historical pattern remains the same and that ignores the relative changes between this company, its market, and its competitors.
If you use such an asinine model to drive your decisions, I wish you the best of luck.
Nothing about this stock’s valuation makes sense. For the long term, the company’s flagship products are quickly becoming commodities. That’ll drive down prices and decrease margins. They can’t even enjoy the temporary artificial product differentiation, because their CRM devices are literally falling apart inside of people if they move their arms too much. Their best stent is manufactured by a competitor. The parent company’s warning letter is still open preventing the integration of one of their major divisions. It's only a matter of time before this company gets chopped up into little pieces and sold off to pay down debts incurred from one of the most foolhardy acquistions in history.