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• Google gained $5.26, or 0.8 percent, to $702.82 after releasing an updated map application for the iPhone. Google Maps came pre-loaded on previous iPhones but were dropped for the much-derided Apple Maps earlier this year.

• SolarCity, which installs rooftop solar panels, began trading on the Nasdaq under the symbol SCTY. Shares were priced at $8 and shot to $12. Elon Musk, founder of PayPal and Tesla Motors, is the company’s chairman.

• Clearwire, a struggling provider of mobile Internet access services, jumped 40 cents to $3.15 in heavy trading after Sprint Nextel offered to buy out the minority shareholders of the company for $2.1 billion, giving Sprint total control.