Corrections & Amplifications

Last week's Streetwise column incorrectly referred to Noble Energy (ticker: NBL) as an oil-driller peer to Transocean (RIG). In fact, Noble Corp . (NE) is the correct name. Noble Energy is an exploration and production company with no current connection to Noble Corp.

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Last week's Technology Trader column erroneously stated that Research in Motion 's (RIMM) BlackBerry Storm is carried by AT&T. In fact, it is offered by Verizon Wireless, a joint venture of Verizon Communications (VZ) and Britain's Vodafone (VOD).