It all sounds a bit ominous for Credit Suisse’s nearly 20,000 investment banking employees, who suffered a 13% reduction in profits year on year in the second quarter and saw their cost income ratio rise to over 74%, up from 69.3% the previous year. Return on regulatory capital in the investment bank fell to 15.6% from 18.7% one year earlier. And fixed income sales and trading revenues were down 5% year on year in Swiss franc terms. Harrison, John Finance…