Federal regulators have approved new rules for stock exchanges for nullifying erroneous trades deemed wildly out of sync with current prices. The Securities and Exchange Commission said Monday the new rules allow an exchange to consider canceling, or "breaking," a stock trade only if the price in question exceeds ...

GHL Acquisition Corp. said Monday that its chief executive resigned so the company could comply with requirements for having its shares listed on the Nasdaq Stock Market. Scott L. Bok will remain chairman, the company said. Former senior vice president Robert H. Niehaus was named CEO until GHL completes ...

The following stocks were among those that moved substantially or traded heavily Wednesday on the New York Stock Exchange and Nasdaq Stock Market: NYSE: American Express Co., up $1.19 at $35.84 Analysts concluded that industry data shows the company is positioned to best recover from recent high defaults and delinquencies. Warner Music Group Corp., up 33 cents at ...

The following stocks were among those that moved substantially or traded heavily Friday on the New York Stock Exchange and Nasdaq Stock Market: NYSE: FedEx Corp., up $4.66 at $77.32 The package delivery company raised its first-quarter earnings forecast on better-than-expected international shipments and cost cuts. Motorola Inc., up 71 cents at $8.68 The struggling phone maker ...