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    feel free to ask me anything about the HFT industry
Thanks for the offer. I would like to know what kind of factors your algorithms consider. Are they mostly indicators that traditional investors look for, like product announcements and earnings statements, but HFT aims to react faster than others, or do you put in variables day traders might ignore? Not just Twitter trends, but obscure things like weather events, stock price proximity to multiples of ten, ease of pronunciation of company names.

The article also mentions that transaction fees approach zero. This seems a critical factor too for a high-frequency trader. How close to zero, and how significant are transaction costs overall?