Hello VBS,
Do you want to know the spread trading btwn different gold futures......or btwn gold and sil?
As i have prepared sheet of gold with two different futures.
I have never analysis the spread btwn gold and sil, as the lot size of both the comm are different. If you buy 1 lot of gold(1kg)..u need to buy min 3 lots of sil (30kg). So my mind never got set with this one.
Personal view: If you do a spread trading btwn two different comm like zinc-lead or gold-sil, though they move up and down in same manner, still their fundementals are different.so need to be careful.