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Not true
Others have commented there are exceptions but I think the theory still holds that post-GFC the HFT world hit a level of maturity that makes it very difficult for new entrants to succeed. Do you agree?
Yes. Most new big winners are at lower frequencies now (radix)
Headlands Technologies is doing quite well. And XTX should be added to the list maybe? Officially founded in 2015, but operational for years before that under the GSA umbrella. Flow Traders, I believe somewhere 2005?
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