The jaw-dropping speed at which certain stocks have moved in response to Donald Trump’s tweets about corporate America makes it seem as if Wall Street already was waiting for the president-elect’s words.
Some sophisticated traders with automated programs are using computer algorithms that instantly capture Trump’s Twitter remarks and then immediately buy or sell the affected stocks, analysts said.
“It’s in the algorithms. They’ve done it,” said Joe Gits, chief executive of Social Market Analytics Inc.
Gits’ firm isn’t among those traders, he said. Instead, the company culls the 500 million...