Great comments again. I think it is telling you that you will require 88% of full margin for each product. Remember that when spreads are going wrong, you lose on both legs of the spread.Quote from DaveN:
I wanted to make a comment about the inter-commodity spreads and how the SPAN margining might drive certain ratios in practice. On the CME website the 1:1 ER2:ES ratio is listed at 88%.
http://www.cme.com/html.wrap/wrappedpages/clearing/pbrates/PBISInterEQ.htm
Unfortunately, I don't know what that means. Is it 88% of the original margin for each, 88% discount, etc? 5 ES: 1 SP was listed at 100% which has me further confused. If anyone could provide insight, I'd appreciate it.