Spear Leeds & Kellogg, the broking subsidiary of Goldman Sachs, has been fined and censured for its role in attempts to manipulate share prices in end-of-day trading.

The New York Stock Exchange and the Securities Exchange Commission have fined Spear Leeds $450,000 (€397,000) after its brokers failed to stop a client from trying to artificially change a company's share price in October 1999.