After a week where market bulls repeatedly got punched in the face, there is little certainty they will come roaring back in the week ahead. 

This week was the worst for stocks since January 2016. Before a Friday rally, stocks had been on a nosedive that saw the type of record market outflows not experienced since 2008. Volatility has boomed roughly 65% in the past five days. Investors will start the new week with the Dow Jones Industrial Average and S&P 500 in correction zone.

"Recent market action appears more to do with the unwinding of the 'reach for yield' theme than economic fundamentals or credit issues," Jefferies strategists said in a note. "The speed of the sell-off in government bond yields has unsettled equity markets given that real interest rates have been negative in many cases."

Despite the nervousness on the Street, Dow Jones Industrial Average futures popped 293 points on Monday. Whether the gains hold are anyone's guess.

Here are three things investors should keep an eye on in the coming week.

Consumer Price Index Is Once Again VIP

It has been a while since the market cared about a Consumer Price Index (CPI) report. But, caring is what most investors will be doing on Wednesday as the latest CPI reading hits the newswires. If it comes in hotter than expected, it could fan inflation fears further and send 10-year yields bursting through 3%. In turn, that would raise the probability of stocks catching another beating.

As TheStreet has written, rising 10-year yields have meant weaker stock prices of late. Unfortunately for the bulls, it's one of the hottest trades on Wall Street right now. 

Will PepsiCo Earnings Miss the Mark?

All eyes will be on Action Alerts Plus holding PepsiCo (PEP) when it reports fourth quarter earnings on Tuesday.

There are several signs that the soda and snacks giant may miss the mark with its report. For one, PepsiCo's stock has under-performed the Dow Jones Industrial Average and S&P 500 since late Sept. 2017. The stock's weakness stems from PepsiCo's third quarter earnings release in October, when it slashed its full-year organic sales guidance due to challenges in its core beverage business.

Secondarily, consumer products companies such as Procter & Gamble (PG) and Hershey (HSY) had mixed fourth quarters (at best) amid rising inflation and sluggish traffic down the center aisles of supermarkets. Meanwhile, tissue maker Kimberly-Clark (KMB) said last month it would layoff 13% of its workforce as it navigates retail price wars between Walmart (WMT) and Amazon (AMZN) . Not helping Kimberly-Clark are declining birthrates. 

Under Armour Comeback Brewing?

After a rough 2017, Wall Street will be looking at whether a more focused Under Armour (UAA) means the return of a one-time high growth stock. Investors will get clues into that when Under Armour reports fourth quarter earnings on Tuesday. 

TheStreet's Cathaleen Chen reports Under Armour could be on the rebound as discounting on its products has dropped and its new running shoe, the HOVR Phantom, has garnered the thumbs-up from shoppers and retailers.

"Better product reception, fewer promotions and a stronger consumer backdrop are helping drive rising demand for Under Armour," Jefferies analyst Randal Konik wrote in note ahead of the results.

Ready for another crazy week on Wall Street? 'Jolt" has you covered on what you need to know, just give the below video a watch. 

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