Thanks for the insightful posts on this thread.
Considering most people on this site are retail traders, I was wondering what your gut feel is on algo trading for typical retail traders who trade through a broker such as IB. Earlier on in the thread you emphasized the value of execution/fees/relationships and I assume some of this would be very difficult for a retail trader to improve upon unless they were doing a lot more volume and had access to better execution/clearing options. Just wondering if you can quantify how big of a factor you think this is. What percentage of profitable algos have you come across where executing on IB just wouldn't cut it?
I think it would be hard. Quite hard. I think only about 20% of my automated stuff would work with an IB fee structure and no exchange memberships. There might be more opportunities in equities or esoteric products I'm not familiar with or don't trade. But I focus on strategies that trade a lot. There could very well be some medium term swing stuff that could work. I've seen some of that. I'd focus on one product, generate some volume, and then move off IB and see what discounts you can get via exchange memberships or volume rebates. I've only created 2-3 threads here. In one of them I talk about how I made the transition.