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The collapse of oil prices was one of the major forces that rattled markets in 2014.
And S&P Capital IQ is forecasting that it will continue to be one of the most disruptive forces in 2015.
The firm's Global Markets Intelligence equity research analysts published the most important themes to watch in each of the 10 S&P 500 sectors in 2015.
Michael Thompson, managing director of the team, told Business Insider: "What we want to do is get people thinking about what's going to be special. People get caught up in price targets and things like that. We're trying to give people a look forward on what's really going to be affecting these industries."