Circuit breakers are only needed to help people who are the victims of bucket shop scams (a deal where the victim loses money based on the price of a trade to w

Circuit breakers are only needed to help people who are the victims of bucket shop scams (a deal where the victim loses money based on the price of a trade to which they were not a party). There's no other reason to care about what price people make trades at or if they make deals at other-than-market prices. In the absence of bucket shops, the answer to "these prices are bad, I don't want to sell at a bad price" is "then don't". Circuit breakers are a symbol of a massive regulatory failure, mitigating and legitimizing a fraud instead of prosecuting it.