I guess the solution is more to combat computational finance, but if there is time for prices everywhere to propagate between trades, the opportunities for geog

I guess the solution is more to combat computational finance, but if there is time for prices everywhere to propagate between trades, the opportunities for geographical arbitrage diminish greatly. I think it's a bug in the system that this arbitrage can even exist, though. It's not like, say, rice, the location of your shares doesn't matter.