“Shares of Apple Inc. and Texas Instruments Inc. led an early tech sector rally on Tuesday, lifting the Nasdaq Composite Index back up above 3,000,” Benjamin Pimentel reports for MarketWatch.

“Apple stock gained 2.4% to $543.70. In a note, ISI Group analyst Brian Marshall cited China Unicom’s announcement of more than 300,000 preorders for the iPhone 5 set to go on sale on Friday. China Unicom is China’s second largest carrier,” Pimentel reports. “‘We continue to believe the iPhone 5 will be in about 100 countries and about 240 carriers by the end of this month,’ Marshall wrote.”

Pimentel reports, “Also on the rise were shares of Texas Instruments, up more than 3% at $30.81. Late Monday, the chip maker narrowed its earnings and sales forecast for the fourth quarter.”

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