Some highlights of today's business news:
Stocks gain despite weakness in banking sector
U.S. stocks showed surprising resilience Tuesday, closing higher as shares of Boeing and other industrial names rose, offsetting weakness from Citigroup and Apple.
The Dow Jones industrial average added 50 points, or 0.4%. The broad S&P 500 index edged up nearly 2 points, or 0.1%. The Nasdaq, a proxy for the technology sector, added 10 points, or 0.4%.
The gains came despite disappointing earnings from Citigroup, which dragged the banking sector lower. Citi tumbled over 6%, while Bank of America and Wells Fargo also took a hit.
Apple shares fell over 2% in during market hours Tuesday amid worries about CEO Steve Jobs' medical leave.
But after the market closed, Apple reported a record jump in quarterly earnings and sales, driven by strong demand for Macs, iPhones and iPads during the holiday season.
Foreigners bought more U.S. debt in November
The United States dug deeper into debt with its foreign creditors in November, according to government records released Tuesday.
Foreign investors bought $93.9 billion in long-term Treasuries in November, increasing their net holdings after purchasing $56 billion the month before, the Treasury Department said Tuesday.
Treasuries are traditionally perceived to be low risk because they're backed by the U.S. government. The latest data signals that their safe-haven reputation has not deteriorated among the international investing community,
despite the country's growing budget deficit.
Meanwhile, the price to buy U.S. debt fell slightly Tuesday, sending yields - which move in the opposite direction - higher. The yield on the benchmark 10-year note rose to 3.36% from 3.33% Monday. The two-year note rose to 0.59% and the five-year note ticked up to 1.95%. The 30-year bond rose to 4.57%.
U.S. approves Comcast-NBC merger
The Federal Communications Commission and the Department of Justice on Tuesday approved - with several conditions - a merger of the country's largest cable operator, Comcast, and broadcasting company NBC Universal.
The FCC voted 4-1 in favor of the deal.
"After a thorough review, we have adopted strong and fair merger conditions to ensure this transaction serves the public interest," FCC Chairman Julius Genachowski said in a statement.
The FCC said the Comcast-NBC Universal combination will be required to take steps to increase competition in the video marketplace. In addition, Comcast has committed to expanding local news coverage, expand programs for Spanish-speaking viewers and offer Internet access to schools and libraries.
CNNMoney.com reporters Ben Rooney and Annalyn Censky and CNN's Kristen Hamill contributed to this report.