Renae Merle reports Wall Street insiders had been preparing for a Clinton administration that would institute a financial transaction tax on trading. That now appears to be off the table. “We have no reason to believe President-elect Trump is in favor of anything but the cost-effective, efficient markets we have in America today. We don’t need to make our markets great again. They’re already great,” Bill Harts, president of Modern Markets Initiative, which represents high-frequency traders.