Thomas Aladjem, a senior equity derivatives proprietary trader at Credit Suisse in London, has left the firm. Aladjem was on gardening leave and could not be reached. He reported to Bertrand Cothier, managing director responsible for equity derivatives prop trading. Cothier did not respond to a message regarding a replacement for Aladjem. The reason for the departure also could not be determined. Aladjem previously had similar roles at Morgan Stanley and JPMorgan.