Sixty-seven percent of U.S. CFOs think Donald Trump can improve the business climate if he stopped using Twitter (TWTR) , according to a Duke University study of 350 CFOs published today.

"CFOs are very clear. They don't like the fluctuations and uncertainty that will result from how President Trump communicates to the public," Duke finance professor and survey director John Graham said in a statement.

More from Investing

3 Best Investing Opportunities Right Now in Closed-End Funds

3 Best Investing Opportunities Right Now in Closed-End Funds

How Small-Cap Stocks Can Protect Your Portfolio From a Trade War

How Small-Cap Stocks Can Protect Your Portfolio From a Trade War

When Is It 'Worth It' to Work With a Financial Advisor?

When Is It 'Worth It' to Work With a Financial Advisor?

Amazon, Microsoft and Google Face Backlash over ICE, Military Deals

Amazon, Microsoft and Google Face Backlash over ICE, Military Deals

3 Great Stock Market Sectors Millennials Should Invest In

3 Great Stock Market Sectors Millennials Should Invest In