Kai Chen, of San Francisco, California, a stockbroker formerly registered with Credit Suisse Securities (USA) LLC, has been fined $10,000.00 and suspended from associating with any Financial Industry Regulatory Authority (FINRA) in any capacity after consenting to findings that he exercised discretion in customer accounts without authorization. Letter of Acceptance, Waiver and Consent, No. 2013039280301 (Dec….