In the midst of his dizzying rise, Hamza Lemssouguer was a prize worth vying for at Credit Suisse Group AG. The firm allowed its 30-year-old trading prodigy to take on high levels of risk to rack up profits in illiquid corners of wild markets. When he turned that hot run into a job at hedge fund Citadel late last year, the Swiss bank promised him his own fund to lure him back. But at the chastened Credit Suisse, which has lurched from one crisis to the next this year, Lemssouguer apparently became a risk too great. The bank on Wednesday canceled plans for the young star’s fund, cutting him loose to pursue his ... (full story)