Hot Topics in Tech: Today's guest is Mark Haraburda, Managing Director at Barchart who gives an overview of Chicago FinTech Exchange 2015.

• Overheard @FinTechChicago: "Latency will be a historical market structure discussion." - Let's hope they're right!
• IBM Watson may be a little scary to some participants.
• Cloud is also scary for many firms.
• Plans for the future

Also of discussion today is:

• "Flash Crash" arrest lays bare regulatory lapses at all levels.
• Goldman Sachs makes $20m investment in HFT tech provider.
• Russell become the latest to unveil digital tools for advisors.
• SunGard to explore possible $10 billion sale says sources.

The Inbox: Listener questions and comments

• Question from Charles S. - What software is the most popular these days with proprietary options trading shops? Is there one that dominates the landscape?
• Question from Adam - Hello, I am a big fan, thank you for your great shows. I have been looking for a platform that I use for Backtesting. I currently use thinkorswim but Backtesting is slow and not reliable. Any suggestions? Thanks, AdamVega
• Question from Nikolai - Why do you think so few outside investment funds and venture funds invest in trading-related startups?