Last Updated Dec 18, 2008 4:22 PM EST
To reach this conclusion, revenue streams were tallied from Apple's Macintosh, iphone, ipod and software businesses and then compared to the firm's market capitalization.
- Do the sums, and Apple's slices are worth about $60 billion. Its current market value hovers around $80 billion. One could argue the difference is a measure of the "Jobs premium." Apple is worth more than its parts because it has successfully harnessed the convergence and synergies of computers, cellphones and entertainment.
- If the man who engineered this harmony were to fall ill, investors might not accord such a high premium. That's all the more reason for Apple to reassure shareholders with a rock-solid succession plan.