CTO Interview: In this segment, Mark and Henry are joined by Alexander Lamb, head of Business Development at the Technancial Company. They discuss:

• Margin calculations, and the behind-the-scenes voodoo
• The Janus margin engine, and real-time margin calculations
• Is real-time risk and margin a response to the new regulatory environment?
• Avoiding latency
• What is the engine driving the machine?
• OTC and the migration to listed options
• Fragmentation and the resulting complexities
• Janus risk management, market surveillance and compliance capacities
• How do they deal with fragmentated data
• Increased precision on timestamps, and the added complexities as a result
• Are there any inklings of systemic risk on the horizon?

The Inbox: Listener questions and comments

• CFTC and SEC can't handle the new era of trading. What about a new cyber-regulator?
• Are the exchanges to blame for the rise of HFT?