Earnings season: Here are the 9 S&P 500 companies blaming the trade war for performance or outlook, so far

The long-running trade standoff between the United States and China has often moved markets, as investors have feared the cumulating effect of higher costs and growing uncertainty on corporate performance.

And while these new trade barriers have not been enough to stop major indexes — the S&P 500 SPX, -0.62% Dow Jones Industrial Average DJIA, -0.25% and Nasdaq Composite Index COMP, -0.74% —from reaching new highs, they are of great concern to individual companies that have increasingly cited trade concerns as reason for poor performance in recent weeks.

The following...