Wall Street traders have developed a biting new acronym for a strategy that's become surprisingly lucrative for President Donald Trump's whiplash-inducing trade policy: TACO " "Trump Always Chickens Out." Reportedly first coined by Financial Times columnist Robert Armstrong, the term has quickly gained traction among investors who are profiting from what they say is a predictable pattern: Trump threatens steep tariffs, the markets plunge, and days later he backs off in a way that prompts a rebound.