Who says name-calling doesn’t hurt? Amazon investors can measure the pain of President Trump’s Twitter attacks over the past three trading days in dollars.

They’ve lost a collective $260 billion as the e-commerce giant’s shares tumbled 2.8 percent since the president’s March 29 renewal of his social-media onslaught against the company run by Washington Post owner Jeff Bezos. It’s a bigger slide than the 0.9 percent decline on the S&P 500 index as well as drops of 1 percent and 1.7 percent on competitors Netflix and Walmart, respectively.