Coca-Cola Company

Between 2002 and 2011, companies spent a whopping $2.5 billion on Super Bowl advertising; this year, a 30-second commercial cost an average of $3.5 million. But what do you get for all that cash. In the case of these eight major advertisers, not as much as they'd hoped.

There's never a dull moment on Wall Street, especially now that the market is hitting multiyear highs. Let's go over some of the news that will help shape the week that lies ahead.

Call it the "second-screen" Super Bowl. About two-thirds of smartphone and tablet owners use their gadgets to do things like text or post on Twitter while watching TV, according to research firm Nielsen. So, for Sunday's game, companies from Coke to Chevy are trying to reach fans on all the "second screens" they have.

The Patriots and Giants will interrupt the entertainment to run some football plays, but everyone knows the Super Bowl is all about the commercials, and at $3.5 million for 30 seconds, sponsors must think they'll get their money's worth. But will their shareholders feel the same way?

Coca-Cola has never shied away from trying new variations of its classic beverage. The company also is known for adding flavorful twists like lime and lemon to its drinks. But last week, both Coke and archrival Pepsi revealed that a more disturbing addition had made its way into their drinks: fungicide.

On the 2012 Interbrand list of the world's most valuable brands, the top seven are the same as in 2011, with Coca-Cola leading the way. Then we get to No. 8. That spot used to be held by wireless phone giant Nokia, but Apple has knocked it down -- way down.

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