>> The only meaningful way to limit the efficacy of these modern trading styles would be purposeful market friction through minimum holding times, circuit break

>> The only meaningful way to limit the efficacy of these modern trading styles would be purposeful market friction through minimum holding times, circuit breakers, etc So I occasionally try to think of a reason to have a guaranteed delay due to signal propagation delay to/from Mars. Would there be a use for putting an automated exchange there? Maybe, but then whomever gates the orders could monitor and predict what will happen 40 minutes out or whatever. Need TLS from trader to exchange or something.