Steve Jobs, co-founder of Apple has died in Palo Alto, California, at the age of 56.

Jobs resigned in August as CEO of the world's most valuable technology company.

He was diagnosed in 2003 with a rare form of pancreatic cancer, and underwent a liver transplant in 2009.

Jobs' net worth is estimated at $7 billion by Forbes. Yesterday Apple's stock was last quoted at $377.22.The stock closed at $378.25 on the Nasdaq.