hi, all I'm currently trading solely the spy and I was wondering what's the correlation between the SPY and the ES. I know the SPY follows almost excatly the es but what i wanted to know is in what ratio, I mean how much a range of point in the ES worth in the SPY in therms of cents. my calculations show the a point in the ES worth about 10C in the spy. any other opnions/official information about this subject? thanks.