24,000 jobs and 12,900 registered companies in the city. Some of the registered firms include:
* Transocean, the world's largest offshore drilling contractor.
* Xstrata an international mining company and currently the world's fourth largest producer of copper.
* Biogen Idec a biotechnology company specializing in drugs for neurological disorders, autoimmune disorders and cancer.
* Crypto AG a Swiss company specialising in communications and information security.
* Rothschild Continuation Holdings AG a holding company that controls much of the Rothschild investment bank for the Rothschild family.
* Alliance Boots a retail pharmacist and pharmaceutical wholesaler in several European countries.
* Nord Stream managing a planned natural gas offshore pipeline from Vyborg in Russia to Greifswald in Germany.
* Informa
* Landis+Gyr a company focused on metering and other technologies which deal with management of scarce resources.
* Partners Group a global alternative asset management firm.
* Expert International GmbH a Swiss consumer electronics retail chain with more than 7400 stores.
* Foster Wheeler
* Tata AG the international trading arm of the Tata Group (a $70 billion Indian
