Apple market value tops US$1 trillion - but could it eventually go the way of the Blackberry?

Apple has become the first company listed on Wall Street to hit a trillion US dollars in value.

The tech company's shares has surged by 50,000 percent since being listed in 1980 and now accounts for 4 percent of the S&P 500 index.

But some analysts worry that without continued growth, Apple could eventually go the way of its once fierce competitor Blackberry.

Here's my report from this morning's AM