CNN Money Top Stories

NBC spent roughly $12 billion to secure the rights to 10 Olympic Games.

Investing legend Warren Buffett published his annual letter Saturday, and it came with some of the usual trimmings: sage advice and reflections on the past year's success.

Buffett bet that an index fund could out perform hedge funds over a 10-year period. He won, and this is what he learned.

The ongoing negative rhetoric over guns and mass shootings drags down gun stocks including American Outdoor Brands, Vista Outdoor and, for the week, Sturm Ruger.

'American businesses have the responsibility to make ethical decisions,' the founder of one gun control group said.

Ryan Holiday reports in "Conspiracy" for the first time that a 26-year-old who goes by the pseudonym "Mr. A" gave Thiel the idea on how to take down Gawker.

Time is running out for buyers of the best-selling plug-in vehicles to get a $7,500 federal tax credit with their purchase.

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Citigroup will refund an average of $190 to 1.75 million credit card accounts overcharged on annual interest rates.

Snap CEO Evan Spiegel became a billionaire by proving people wrong. Now the fate of his company may rest on doing it again.

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Four months after their billionaire owner shut them down, beloved local news sites Gothamist, DCist and LAist will soon be back online.

Some of China's biggest companies are now much more focused on selling international assets rather than buying them.

Royal Bank of Scotland is making money again after nine years and $81 billion in losses, but investors are worried about a looming US fine for selling toxic mortgages.

Plastic straw manufacturers are bracing for big changes. The UK is considering a ban, and the tide of opining is turning against their product.