again, i'll disagree, most of the shareholders (including institutions) track apples performance on sales, sales are what has been the revenue driving device for the company and revenues have been a big reason why the stock has performed well (and why investor sentiment feels it will continue to do so). if you point out a reason why you feel that way instead of just thinking and saying they're unrelated I assure you it would be linked to their products.
It started around 1988 when Apple released the Macintosh II series with the 16mhz MC68020 processor to compete with the IBM PS/2.