GLG Partners, the UK hedge fund manager listed in the US, has been added to a list of financial services companies that investors may not short, along with mainstream US asset manager Legg Mason and Swiss bank Credit Suisse.

NYSE-Euronext, the company that runs the New York Stock Exchange, said the Securities and Exchange Commission had added the three names, along with 28 others, to the list of 799 companies it had temporarily put beyond the legal reach of short sellers last week.