If you're feeling really worried this year, you're not alone.

In many cases, top executives and leaders at the World Economic Forum in Davos are just as scared.

Tanking stock markets, plunging oil prices, China's slowing economy and geopolitical conflicts are just some of the things that are keeping executives awake at night.

Richard Quest, anchor of CNN's Quest Means Business, powwowed with a host of Davos VIPs to understand their deepest, darkest fears and had them rank their levels of anxiety on his Worry Wall. (Level 10 indicates extreme fear, while zero indicates a relaxed attitude.)

Here's what they had to say...

Bob Dudley, CEO, BP

Fear level: 9

Most concerned about: The geopolitical consequences of falling oil prices

Jacob Frenkel, chairman, JPMorgan Chase International

Fear level: 9

Most concerned about: Russia

Ken Rogoff, economics professor, Harvard

Fear level: 8

Most concerned about: Emerging markets

Carlos Ghosn, chairman and CEO of Nissan Motor and Renault

Fear level: 5

Most concerned about: Russia and the Middle East

Who's feeling more relaxed?

But not all executives are getting the jitters. Here are some who feel pretty good about the future.

Richard Solomons, CEO, InterContinental Hotels Group

Fear level: 4

Most concerned about: Nothing in particular

Pierre Moscovici, European Economics Commissioner

Fear level: 3.5

Most concerned about: Situation surrounding refugees

Dennis Nally, chairman, PricewaterhouseCoopers International

Fear level: 3

Most concerned about: Geopolitical issues

Hans Vestberg, CEO, Ericsson

Fear level: 2.5 or 7.5

Explanation: Vestberg said the worry level in his heart is 2.5, but the worry in his head hits 7.5.

And here's what Quest fans had to say:

--CNN's Saskya Vandoorne contributed to this report.