U.S. stocks were wavering, searching for direction, but mostly lower Monday as uncertainty over potential policy moves from President Donald Trump weighed on Wall Street. Banking stocks led Wall Street sharply higher last week after Trump signed an executive order to loosen financial regulations. Tiffany shares fell as the company announced that its current CEO would resign immediately, after less than two years on the job. Board chairman and previous Tiffany CEO Michael J. Kowalski will serve as interim CEO. And, Toymaker Hasbro jumped over 14% after reporting fourth-quarter adjusted earnings of $1.64 a share, beating forecasts of $1.27. Revenue of $1.63 billion also topped Wall Street forecasts. Tech shares, including Apple , Alphabet's Google, Facebook , Microsoft , Netflix , Twitter were on watch Monday after a number of tech companies filed legal briefs on Sunday with a federal appellate court saying Trump's immigration ban damages their businesses.