Off the Charts: More blowout earnings. What comes next?

In this Jan. 8, 2019 photo people are towered by the front facade of the Bank of America Plaza Building in downtown Los Angeles. Companies are lining up to tell investors how much they made during the last three months of 2018, and the reports get going in earnest this upcoming week with Citigroup and a slew of other banks on deck. Expectations are high, and Wall Street is forecasting a fifth straight quarter where profit growth topped 10 percent for S&P 500 companies. Bank of America Corp. is expected to report financial earnings next week. (AP Photo/Richard Vogel)

NEW YORK — Forget about "What have you done for me lately?" The big question investors will be asking companies this upcoming earnings season is: What will you do next?

Companies are lining up to tell investors how much they made during the last three months of 2018, and the reports get going in earnest this upcoming week with Citigroup and a slew of other banks on deck. Expectations are high, and Wall Street is forecasting a fifth straight quarter where profit growth topped 10 percent for S&P 500 companies.

Markets could use some encouragement following the worst December for stocks since the Great Depression. But investors are likely less interested in companies' performance over the last three months as what they have to say about the trends for 2019.

Economic growth around the world is expected to slow this year, and rising payroll costs could be eating into company profits. Trying to judge the impact on profits, investors will pay more attention to the conference calls that CEOs hold with analysts and shareholders after reporting their quarterly results.

"The market is going to be very focused on the calls," said Ernie Cecilia, chief investment officer at Bryn Mawr Trust. "It's going to be about revenue expectations and margins more than anything."

Analysts have been expecting profit growth to slow for companies in 2019 following their blowout 2018, when the first year of lower tax rates provided a big, one-time boost. Wall Street has been slashing its forecasts for 2019 profit growth in recent weeks

Without the tax benefit, companies need to either drum up more revenue or extract more profit from each $1 in sales to push their profits higher. And some big name companies have cited pain caused by other challenges, such as the global trade war.

Apple, for example, shocked Wall Street when it said this month that China's economy was slowing more sharply than it expected and slashed its revenue forecast for the final quarter of 2018. Rival Samsung cited weak global demand for chips when it said it expects a roughly 29 percent drop in operating profit for the fourth quarter.

Companies, meanwhile, are finally giving bigger pay raises to their employees. After years of sluggish gains, workers' hourly earnings rose 3.2 percent last month for the strongest growth since 2009. While that's good for workers, it can mean lower profit margins for companies unless they can pass along their cost increases to their customers. Given the slowing economy, that may not be easy.

That's why Wall Street is now forecasting earnings growth for S&P 500 companies to drop by more than half to 7 percent this year from 20 percent in 2018. Three months ago, analysts were forecasting a healthier 10 percent jump in 2019 earnings.

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