As we all know, it is illegal to design a computer to play for you in poker. However, it is legal to design a software to trade for you in the market. Can someone who is smarter than me explain why the moral imperative outlawing bots would not apply to computer trading?
I assume some people will argue that high frequency trading is necessary, fairness/moral issues aside, because it provides liquidity, lower spreads, etc. Is there a way to quantify the benefit the computers supposedly provide vs the idea that u are EV wise always on the losing side of a trade with them? I don't know the real number, but i've heard 70% thrown around as the number of shares traded that HFT is responsible for.
Maybe the issue is that bots are for the most part illegal because we don't know if we are playing a bot or not? In the market its well known that you are most likely trading against a computer. Does that make it "ok" or more acceptable?
for those who are unfamiliar, high frequency trading is basically a computer trading in and out of shares on extremely short time frames, 2 seconds, 10 seconds, etc.