Already suffering from steep declines in sales and profit, the carmaker could now face the president’s wrath.

© Mikayla Whitmore for The New York Times

Shares of the company, CATL, surged in their first day of trading. Onshore U.S. investors were blocked from buying its stock as a “decoupling” of finance continued.

The S&P 500 logged its biggest gain in over a month after American and Chinese officials signaled a de-escalation in the trade war between the world’s two largest economies.

The S&P 500 rose 4.6 percent this week, with Wall Street grasping for scraps of information about tariffs and other crucial issues that can shift daily.

After an early wobble, markets resumed rising after Chinese officials contradicted suggestions from President Trump and others about tariff negotiations.

The president’s threats of tariffs have brought countries like Japan, South Korea and India rushing to negotiate, but they have sown chaos with bigger trading partners like China.

Many investors and business leaders increasingly believe President Trump will dial back his trade battles. Not everyone is willing to commit to that bet.

Markets moderated after Chinese officials pushed back on comments from President Trump and others suggesting that tariffs may ease via negotiations.

A look at tariffs, the Fed, the dollar and how uncertainty is wreaking havoc on financial markets.