President-elect Donald Trump is considering nominating Sullivan & Cromwell partner Jay Clayton to run the Securities and Exchange Commission, potentially positioning a top lawyer to banks and hedge funds to lead Wall Street’s main regulator, said a person with knowledge of the matter. Clayton, who met with Trump last month, has represented Goldman Sachs Group Inc. and investment firms ranging from Och-Ziff Capital Management Group LLC to Oaktree Capital Group LLC, according to Sullivan & Cromwell’s website.