FRANKFURT - Shares in Inc and American Express rose in Frankfurt trading on Friday, after both companies released quarterly results that came in above expectations.

By 0710 GMT, Frankfurt-traded shares of rocketed 14.6 percent, while American Express shares were up 2.7 percent.

The development of Amazon was significant thanks to amongst others the Ebook-Reader Kindle which helped the group to achieve a net income increase in the third quarter of 68 percent to $199 million, while sales increased by more than 28 percent, Close Brothers Seydler wrote in a note.

The figures of American Express yesterday were not as impressive as Amazon's but the group announced that the loan default situation showed first indications of (an) ease up. (Reporting by Christoph Steitz)