Well, not really. The SB brokers tend to factor in anyone who might be doing that nowadays. However, there are posts by members on this board who used to exploit the SB 'bias' by doing just that - until the SB companies wised up to it. I shouldnt think for a moment that it offers any advantage now - certainly I cant see it in live futures data versus SB price ; by the time you've noticed it on one chart, its already reflected in the other.