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SAN FRANCISCO — Apple’s iPhone remained the most popular smartphone among U.S. buyers in the closing months of 2012 while Android handsets were on top worldwide, Kantar Worldpanel ComTech reported.

INTERNET

Citing Newtown, Groupon ends gun-related deals, promotions

NEW YORK — Groupon has halted gun-related promotions such as deals for shooting ranges and concealed weapons courses in the wake of last month’s massacre in Newtown, Conn.

MARKETS

Stocks close up on strong year-end earnings reports

Strong earnings reports from big U.S. companies helped push the Dow Jones industrial average to its eighth gain in nine sessions Tuesday.

DuPont, Verizon and Travelers Cos., three of the 30 stocks that make up the Dow, closed higher after reporting their financial results for the final quarter of 2012.

Higher sales of prescription drugs and medical devices helped Johnson & Johnson post a much bigger fourth-quarter profit than a year ago, when a slew of charges depressed results.

The Dow closed up 62.51 points, or 0.5 percent, at 13,712.21.

The Standard & Poor’s 500 index gained 6.58, or 0.4 percent, to 1,492.56.

The Nasdaq composite average rose 8.47, or 0.3 percent, to 3,143.18.

SETTLEMENTS

SEC strips accreditation from credit-rating firm

The Securities and Exchange Commission has barred Egan-Jones Ratings Co. from rating governments and issuers of other types of bonds as a recognized ratings agency for at least 18 months.

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